![Daikin REYQ16PY1B [161/477] Freeze prevention](/img/pdf.png)
Daikin REYQ16PY1B [161/477] Freeze prevention
![Daikin REYQ16PY1B [161/477] Freeze prevention](/views2/1713634/page161/bga1.png)
SiBE37-701_B Outline of Control (Indoor Unit)
Function 150
6.5 Freeze Prevention
Freeze
Prevention by Off
Cycle (Indoor
Unit)
When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit
heat exchanger drops too low, the unit enters freeze prevention operation in accordance with
the following conditions, and is also set in accordance with the conditions given below.
When freeze prevention is activated, the electronic expansion valve is closed, the drain pump
turns ON and the fan tap is fixed to L airflow. When the following conditions for stopping are
satisfied, it returns.
Conditions for starting freeze prevention: Temperature is -1°C or less for total of 40 min., or
temperature is -5°C or less for total of 10 min.
Conditions for stopping freeze prevention: Temperature is +7°C or more for 10 min.
continuously
[Conditions for starting when airflow direction is two-way or three-way]
Conditions for starting: Temperature is 1ºC or less for a total of 15 minutes or 0ºC or less for 1
minute continuously.
+7ºC
0ºC
–5ºC
OR
+7ºC
–1ºC
t1 t2 t3
t >40 min.
0ºC
Freeze prevention operation
Forced OFF by thermostat
10 min.
Freeze prevention operation
Forced OFF by thermostat
10 min.
10 min.
t4
+7ºC
0ºC
OR
+7ºC
+1ºC
t1 t2 t3 t >15 min.
Freeze prevention operation
Forced OFF by thermostat
10 min.
Freeze prevention operation
Forced OFF by thermostat
1 min.
10 min.
t4
Содержание
- Basic control 07 2
- Combination of outdoor units 4 model selection 2
- Function general 04 2
- Functional parts layout 1 2
- Introduction vi 2
- Model names of indoor outdoor units 2 external appearance 2
- Part 1 general information 2
- Part 2 specifications 2
- Part 3 refrigerant circuit 8 2
- Part 4 function 03 2
- R 410a heat recovery 50hz 2
- Refrigerant circuit 9 2
- Refrigerant flow for each operation mode 6 2
- Specifications 0 2
- Table of contents 2
- Other control 40 3
- Outdoor unit pcb layout 90 3 field setting 91 3
- Outline of control indoor unit 41 3
- Part 5 test operation 55 3
- Part 6 troubleshooting 36 3
- Protection control 32 3
- Special control 19 3
- Symptom based troubleshooting 39 2 troubleshooting by remote controller 42 3
- Test operation 56 3
- Troubleshooting by indication on the remote controller 59 4
- Troubleshooting op centralized remote controller 71 5
- Troubleshooting op unified on off controller 76 5
- Example of connection 46 7 thermistor resistance temperature characteristics 50 8 pressure sensor 52 9 method of checking the inverter s power transistors and diode modules 53 6
- List of electrical and functional parts 31 6
- Option list 40 6
- Part 7 appendix 96 6
- Part 8 precautions for new refrigerant r 410a 55 6
- Piping diagrams 97 6
- Piping installation point 43 6
- Precautions for new refrigerant r 410a 56 6
- Wiring diagrams for reference 08 6
- Caution in repair 7
- Introduction 7
- Safety cautions 7
- Warning 7
- Caution 8
- Cautions regarding products after repair 8
- Warning 8
- Caution 9
- Inspection after repair 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Using icons 10
- Using icons list 10
- Preface 11
- Part 1 general information 12
- Bs units 13
- Bsv 4q100p 6q100p v1 13
- General information 2 13
- Heat recovery reyq 8p 10p 12p 14p 16p 18p 20p 22p 24p y1 26p 28p 30p 32p 34p 36p 38p 40p 42p 13
- Indoor units 13
- Model names of indoor outdoor units 13
- Note fxdq has following 2 series as show below fxdq pb nbve with drain pump ma rohs directive models specifications dimensions and other functions are not changed compared with m type 13
- Outdoor units normal series 13
- P 46p 48p 13
- Power supply ve 1 φ 220 240v 50hz v1 1 φ 220 240v 50hz v3 1 φ 230v 50hz y1 3 φ 380 415v 50hz 13
- Series model name power supply 13
- Sibe37 701_b model names of indoor outdoor units 13
- Type model name power supply 13
- 600 4 way blow ceiling mounted cassette 14
- Bs units 14
- Ceiling mounted corner cassette 14
- Ceiling suspended unit 14
- Concealed ceiling unit 14
- Concealed ceiling unit large 14
- Concealed ceiling unit small 14
- Concealed floor standing unit 14
- External appearance 14
- External appearance sibe37 701_b 14
- Floor standing unit 14
- General information 14
- Indoor units 14
- Roundflow ceiling mounted cassette 14
- Slim concealed ceiling unit 14
- Wall mounted unit 14
- Way blow ceiling mounted cassette 14
- General information 4 15
- Outdoor units 15
- Reyq26p 28p reyq30p 32p reyq34p 36p 38p 40p 15
- Reyq42p 44p reyq46p 48p 15
- Reyq8p 10p 12p 14p 16p reyq18p 20p 22p 24p 15
- Sibe37 701_b external appearance 15
- Combination of outdoor units 16
- Connectable indoor units number and capacity normal series 17
- General information 6 17
- Model selection 17
- Sibe37 701_b model selection 17
- Vrv iii heat recovery series 17
- Connectable indoor unit 18
- General information 18
- Hp 2 hp 2 hp 3 hp 4hp 5hp 6hp 8hp 10hp 18
- In some models it is not possible to connect the maximum number of connectable indoor units select models so the total capacity of connected indoor units conforms to the specification 18
- Indoor unit capacity 18
- Model selection sibe37 701_b 18
- New refrigerant model code p20 type p25 type p32 type p40 type p50 type p63 type p80 type p100 type p125 type p140 type p200 type p250 type 18
- Note fxdq has following 2 series as shown below fxdq pb nbve with drain pump 18
- Selecting model capacity 2 kw 2 kw 3 kw 4 kw 5 kw 7 kw 9 kw 11 kw 14 kw 16 kw 22 kw 28 kw equivalent output 0 hp 1hp 18
- The total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit 18
- Use the above tables to determine the capacities of indoor units to be connected make sure the total capacity of indoor units connected to each outdoor unit is within the specified value kw 18
- Differences from conventional models 19
- Part 2 specifications 20
- Specifications 0 20
- Outdoor units 21
- Sibe37 701_b specifications 21
- Specifications 21
- Specifications 10 21
- Specifications 22
- Specifications sibe37 701_b 22
- Sibe37 701_b specifications 23
- Specifications 12 23
- Specifications 24
- Specifications sibe37 701_b 24
- Sibe37 701_b specifications 25
- Specifications 14 25
- Specifications 26
- Specifications sibe37 701_b 26
- Sibe37 701_b specifications 27
- Specifications 16 27
- Specifications 28
- Specifications sibe37 701_b 28
- Sibe37 701_b specifications 29
- Specifications 18 29
- Specifications 30
- Specifications sibe37 701_b 30
- Sibe37 701_b specifications 31
- Specifications 20 31
- Indoor units 32
- Roundflow ceiling mounted cassette 32
- Specifications 32
- Specifications sibe37 701_b 32
- Roundflow ceiling mounted cassette 33
- Sibe37 701_b specifications 33
- Specifications 22 33
- Roundflow ceiling mounted cassette 34
- Specifications 34
- Specifications sibe37 701_b 34
- Sibe37 701_b specifications 35
- Specifications 24 35
- 600 4 way blow ceiling mounted cassette 36
- Specifications 36
- Specifications sibe37 701_b 36
- Sibe37 701_b specifications 37
- Specifications 26 37
- Specifications 38
- Specifications sibe37 701_b 38
- Way blow ceiling mounted cassette 38
- Sibe37 701_b specifications 39
- Specifications 28 39
- Way blow ceiling mounted cassette 39
- Specifications 40
- Specifications sibe37 701_b 40
- Sibe37 701_b specifications 41
- Specifications 30 41
- Specifications 42
- Specifications sibe37 701_b 42
- Ceiling mounted corner cassette 43
- Sibe37 701_b specifications 43
- Specifications 32 43
- Specifications 44
- Specifications sibe37 701_b 44
- Sibe37 701_b specifications 45
- Slim concealed ceiling unit with drain pump 45
- Specifications 34 45
- Slim concealed ceiling unit with drain pump 46
- Specifications 46
- Specifications sibe37 701_b 46
- Sibe37 701_b specifications 47
- Slim concealed ceiling unit with drain pump 47
- Specifications 36 47
- Specifications 48
- Specifications sibe37 701_b 48
- Concealed ceiling unit small 49
- Sibe37 701_b specifications 49
- Specifications 38 49
- Specifications 50
- Specifications sibe37 701_b 50
- Concealed ceiling unit 51
- Sibe37 701_b specifications 51
- Specifications 40 51
- Concealed ceiling unit 52
- Specifications 52
- Specifications sibe37 701_b 52
- Concealed ceiling unit 53
- Sibe37 701_b specifications 53
- Specifications 42 53
- Concealed ceiling unit 54
- Specifications 54
- Specifications sibe37 701_b 54
- Concealed ceiling unit 55
- Sibe37 701_b specifications 55
- Specifications 44 55
- Specifications 56
- Specifications sibe37 701_b 56
- Sibe37 701_b specifications 57
- Specifications 46 57
- Concealed ceiling unit large 58
- Specifications 58
- Specifications sibe37 701_b 58
- Sibe37 701_b specifications 59
- Specifications 48 59
- Ceiling suspended unit 60
- Specifications 60
- Specifications sibe37 701_b 60
- Sibe37 701_b specifications 61
- Specifications 50 61
- Specifications 62
- Specifications sibe37 701_b 62
- Wall mounted unit 62
- Sibe37 701_b specifications 63
- Specifications 52 63
- Wall mounted unit 63
- Floor standing unit 64
- Specifications 64
- Specifications sibe37 701_b 64
- Floor standing unit 65
- Sibe37 701_b specifications 65
- Specifications 54 65
- Concealed floor standing unit 66
- Specifications 66
- Specifications sibe37 701_b 66
- Concealed floor standing unit 67
- Sibe37 701_b specifications 67
- Specifications 56 67
- Bs units 68
- Connection range for bs unit 68
- Specifications 68
- Specifications sibe37 701_b 68
- Functional parts layout 1 69
- Part 3 refrigerant circuit 69
- Refrigerant circuit 9 69
- Refrigerant flow for each operation mode 6 69
- Refrigerant circuit 70
- Refrigerant circuit sibe37 701_b 70
- Reyq8p 10p 12p 70
- Dual pressure gas pipe 71
- Gauge port 71
- Heat exchanger 1 71
- Heat exchanger 2 71
- Liquid pipe 71
- Refrigerant circuit 60 71
- Reyq8p 10p 12p 8hp 10hp 12hp single type inv unit std unit 71
- Sibe37 701_b refrigerant circuit 71
- Stop valve 71
- Subcooling heat exchanger 1 71
- Subcooling heat exchanger 2 71
- Suction pipe 71
- Refrigerant circuit 72
- Refrigerant circuit sibe37 701_b 72
- Reyq14p 16p 72
- Gauge port 73
- Heat exchanger 1 73
- Heat exchanger 2 73
- Liquid pipe 73
- Refrigerant circuit 62 73
- Reyq14p 16p 14hp 16hp single type inv unit 2 73
- Sibe37 701_b refrigerant circuit 73
- Stop valve 73
- Subcooling heat exchanger 1 73
- Subcooling heat exchanger 2 73
- Suction pipe 73
- Refrigerant circuit 74
- Refrigerant circuit sibe37 701_b 74
- Remq8p multi 8hp 74
- Liquid pipe 75
- Refrigerant circuit 64 75
- Remq8p 75
- Sibe37 701_b refrigerant circuit 75
- Stop valve 75
- Stop valve dual pressure gas pipe 75
- Stop valve equalizing pipe 75
- Stop valve suction pipe 75
- Refrigerant circuit 76
- Refrigerant circuit sibe37 701_b 76
- Remq10p 12p multi 10 12hp 76
- Liquid pipe 77
- Refrigerant circuit 66 77
- Remq10p 12p 77
- Sibe37 701_b refrigerant circuit 77
- Stop valve 77
- Stop valve dual pressure gas pipe 77
- Stop valve equalizing pipe 77
- Suction pipe 77
- Refrigerant circuit 78
- Refrigerant circuit sibe37 701_b 78
- Remq14p 16p multi 14 16hp 78
- Liquid pipe 79
- Refrigerant circuit 68 79
- Remq14p 16p 79
- Sibe37 701_b refrigerant circuit 79
- Stop valve 79
- Stop valve dual pressure gas pipe 79
- Stop valve equalizing pipe 79
- Suction pipe 79
- Bs unit functional parts 80
- Bsv4q100pv1 6q100pv1 80
- Indoor side 80
- Outdoor side 80
- Fxcq fxfq fxzq fxkq fxdq fxsq fxmq fxhq fxaq fxlq fxnq 81
- Indoor units 81
- Front view 82
- Functional parts layout 82
- Functional parts layout sibe37 701_b 82
- Note for reference numbers refer to page 59 82
- Refrigerant circuit 82
- Reyq8p 10p 12p 82
- Front view 83
- Note for reference numbers refer to page 61 83
- Refrigerant circuit 72 83
- Reyq14p 16p 83
- Sibe37 701_b functional parts layout 83
- Front view 84
- Functional parts layout sibe37 701_b 84
- Note for reference numbers refer to page 63 84
- Refrigerant circuit 84
- Remq8p 84
- Front view 85
- Note for reference number refer to page 65 85
- Refrigerant circuit 74 85
- Remq10p 12p 85
- Sibe37 701_b functional parts layout 85
- Front view 86
- Functional parts layout sibe37 701_b 86
- Note for reference number refer to page 67 86
- Refrigerant circuit 86
- Remq14p 16p 86
- Bs unit 87
- Cooling unit 87
- Fan off 87
- Fan on 87
- Indoor unit 87
- Indoor unit operation 87
- One body type 87
- Refrigerant circuit 76 87
- Refrigerant flow for each operation mode 87
- Reyq8p 10p 12p cooling operation 87
- Sibe37 701_b refrigerant flow for each operation mode 87
- Thermostat off 87
- Thermostat on 87
- Bs unit 88
- Fan ll 88
- Fan off 88
- Fan on 88
- Heating operation 88
- Heating unit 88
- Indoor unit 88
- Indoor unit operation 88
- One body type 88
- Refrigerant circuit 88
- Refrigerant flow for each operation mode sibe37 701_b 88
- Thermostat off 88
- Thermostat on 88
- Bs unit 89
- Cooling unit 89
- Fan ll 89
- Fan on 89
- Heating unit 89
- Indoor unit 89
- Indoor unit operation 89
- One body type 89
- Refrigerant circuit 78 89
- Sibe37 701_b refrigerant flow for each operation mode 89
- Simultaneous cooling heating operation 89
- Thermostat off 89
- Thermostat on 89
- Bs unit 90
- Cooling oil return operation 90
- Cooling unit 90
- Fan off 90
- Fan on 90
- Indoor unit 90
- Indoor unit operation 90
- One body type 90
- Refrigerant circuit 90
- Refrigerant flow for each operation mode sibe37 701_b 90
- Thermostat off 90
- Thermostat on 90
- Bs unit 91
- Fan ll 91
- Fan off 91
- Fan on 91
- Heating oil return operation 91
- Heating unit 91
- Indoor unit 91
- Indoor unit operation 91
- One body type 91
- Refrigerant circuit 80 91
- Sibe37 701_b refrigerant flow for each operation mode 91
- Thermostat off 91
- Thermostat on 91
- Bs unit 92
- Cooling unit 92
- Fan off 92
- Fan on 92
- Heating unit 92
- Indoor unit 92
- Indoor unit operation 92
- Oil return operation at simultaneous cooling heating operation 92
- One body type 92
- Refrigerant circuit 92
- Refrigerant flow for each operation mode sibe37 701_b 92
- Thermostat on 92
- Bs unit 93
- Cooling unit 93
- Fan ll 93
- Fan off 93
- Fan on 93
- Heating unit 93
- Indoor unit 93
- Indoor unit operation 93
- One body type 93
- Partial defrosting 1 defrosting in the right unit 93
- Refrigerant circuit 82 93
- Sibe37 701_b refrigerant flow for each operation mode 93
- Thermostat on 93
- Bs unit 94
- Cooling unit 94
- Fan ll 94
- Fan off 94
- Fan on 94
- Heating unit 94
- Indoor unit 94
- Indoor unit operation 94
- One body type 94
- Partial defrosting 2 defrosting in the left unit 94
- Refrigerant circuit 94
- Refrigerant flow for each operation mode sibe37 701_b 94
- Thermostat on 94
- Bs unit 95
- Cooling unit 95
- Fan off 95
- Fan on 95
- Indoor unit 95
- Indoor unit operation on 95
- One body type 95
- Refrigerant circuit 84 95
- Reyq14p 16p cooling operation 95
- Sibe37 701_b refrigerant flow for each operation mode 95
- Thermostat off 95
- Thermostat on 95
- Bs unit 96
- Fan ll 96
- Fan off 96
- Fan on 96
- Heating operation 96
- Heating unit 96
- Indoor unit 96
- Indoor unit operation on 96
- One body type 96
- Refrigerant circuit 96
- Refrigerant flow for each operation mode sibe37 701_b 96
- Thermostat off 96
- Thermostat on 96
- Bs unit 97
- Cooling unit 97
- Fan ll 97
- Fan on 97
- Heating unit 97
- Heating unit thermostat off 97
- Indoor unit 97
- Indoor unit operation 97
- One body type 97
- Refrigerant circuit 86 97
- Sibe37 701_b refrigerant flow for each operation mode 97
- Simultaneous cooling heating operation 97
- Thermostat on 97
- Bs unit 98
- Cooling oil return operation 98
- Cooling unit 98
- Fan off 98
- Fan on 98
- Indoor unit 98
- Indoor unit operation 98
- One body type 98
- Refrigerant circuit 98
- Refrigerant flow for each operation mode sibe37 701_b 98
- Thermostat off 98
- Thermostat on 98
- Bs unit 99
- Fan ll 99
- Fan off 99
- Fan on 99
- Heating oil return operation 99
- Heating unit 99
- Indoor unit 99
- Indoor unit operation 99
- One body type 99
- Refrigerant circuit 88 99
- Sibe37 701_b refrigerant flow for each operation mode 99
- Thermostat off 99
- Thermostat on 99
- Bs unit 100
- Cooling unit 100
- Fan off 100
- Fan on 100
- Heating unit 100
- Indoor unit 100
- Indoor unit operation on 100
- Oil return operation at simultaneous cooling heating operation 100
- One body type 100
- Refrigerant circuit 100
- Refrigerant flow for each operation mode sibe37 701_b 100
- Thermostat on 100
- Bs unit 101
- Cooling unit 101
- Fan ll 101
- Fan off 101
- Fan on 101
- Heating unit 101
- High temperature high pressure gas 101
- High temperature high pressure liquid 101
- Indoor unit 101
- Indoor unit operation 101
- Low temperature low pressure 101
- One body type 101
- Partial defrosting 1 defrosting in the right unit 101
- Refrigerant circuit 90 101
- Sibe37 701_b refrigerant flow for each operation mode 101
- Thermostat on 101
- Bs unit 102
- Cooling unit 102
- Fan ll 102
- Fan off 102
- Fan on 102
- Heating unit 102
- Indoor unit 102
- Indoor unit operation on 102
- One body type 102
- Partial defrosting 2 defrosting in the left unit 102
- Refrigerant circuit 102
- Refrigerant flow for each operation mode sibe37 701_b 102
- Thermostat on 102
- High temperature high pressure gas 103
- High temperature high pressure liquid 103
- Low temperature low pressure 103
- Refrigerant circuit 92 103
- Remq10 12p multi 10 12hp 103
- Remq8p multi 8hp 103
- Reyq18p 20p cooling operation 103
- Sibe37 701_b refrigerant flow for each operation mode 103
- Heating operation 104
- High temperature high pressure gas 104
- High temperature high pressure liquid 104
- Low temperature low pressure 104
- Refrigerant circuit 104
- Refrigerant flow for each operation mode sibe37 701_b 104
- Remq10 12p multi 10 12hp 104
- Remq8p multi 8hp 104
- High temperature high pressure gas 105
- High temperature high pressure liquid 105
- Low temperature low pressure 105
- Refrigerant circuit 94 105
- Remq10 12p multi 10 12hp 105
- Remq8p multi 8hp 105
- Sibe37 701_b refrigerant flow for each operation mode 105
- Simultaneous cooling heating operation 105
- Cooling oil return operation 106
- High temperature high pressure gas 106
- High temperature high pressure liquid 106
- Low temperature low pressure 106
- Refrigerant circuit 106
- Refrigerant flow for each operation mode sibe37 701_b 106
- Remq10 12p multi 10 12hp 106
- Remq8p multi 8hp 106
- Heating oil return operation 107
- High temperature high pressure gas 107
- High temperature high pressure liquid 107
- Low temperature low pressure 107
- Refrigerant circuit 96 107
- Remq10 12p multi 10 12hp 107
- Remq8p multi 8hp 107
- Sibe37 701_b refrigerant flow for each operation mode 107
- High temperature high pressure gas 108
- High temperature high pressure liquid 108
- Low temperature low pressure 108
- Oil return operation at simultaneous cooling heating operation 108
- Refrigerant circuit 108
- Refrigerant flow for each operation mode sibe37 701_b 108
- Remq10 12p multi 10 12hp 108
- Remq8p multi 8hp 108
- High temperature high pressure gas 109
- High temperature high pressure liquid 109
- Low temperature low pressure 109
- Partial defrosting 1 defrosting in the right unit 109
- Refrigerant circuit 98 109
- Remq10 12p multi 10 12hp 109
- Remq8p multi 8hp 109
- Sibe37 701_b refrigerant flow for each operation mode 109
- High temperature high pressure gas 110
- High temperature high pressure liquid 110
- Low temperature low pressure 110
- Partial defrosting 2 defrosting in the left unit 110
- Refrigerant circuit 110
- Refrigerant flow for each operation mode sibe37 701_b 110
- Remq10 12p multi 10 12hp 110
- Remq8p multi 8hp 110
- Discharge of refrigerant discharge refrigerant from refrigerant regulator by opening of svc when the load of the outdoor unit is large 111
- Operation of refrigerant regulator 111
- Pressure regulating valve refrigerant regulator the circuit will be closed when svl svo svg are all closed in this case the increased pressure in the refrigerant regulator will be transferred to the liquid refrigerant pipe side to regulate the pressure 111
- Recovery of refrigerant surplus refrigerant is recovered to refrigerant regulator by opening of svl and svg when the indoor unit load is small 111
- Refrigerant circuit 100 111
- Sibe37 701_b refrigerant flow for each operation mode 111
- Cooling unit 112
- Heating unit 112
- In cooling operation 112
- In equalization 112
- Indoor unit bs unit 112
- Pressure equalizing when switching operation cooling heating 112
- Refrigerant circuit 112
- Refrigerant flow for each operation mode sibe37 701_b 112
- To heating operation 112
- When switching operation from to cooling to heating first the electronic expansion valves for evhs evh evl and evls of the indoor unit will be closed next open the evhs and it makes to balance the system pressure finally evh and evhs are opened and the electronic expansion valve of the indoor unit is opened to start the operation as a heating circuit 112
- Cooling unit 113
- Heating unit 113
- In equalization 113
- In heating operation 113
- Indoor unit bs unit 113
- Refrigerant circuit 102 113
- Sibe37 701_b refrigerant flow for each operation mode 113
- To cooling operation 113
- When switching operation from heating to cooling first the electronic expansion valve and the solenoid valve for evhs evh evl and evls of the indoor unit will be closed next open the evls and it makes to balance the system pressure finally evl and evls are opened and the electronic expansion valve of the indoor unit is opened to start the operation as a cooling circuit 113
- Basic control 07 114
- Function general 04 114
- Other control 40 114
- Outline of control indoor unit 41 114
- Part 4 function 114
- Protection control 32 114
- Special control 19 114
- Function general 115
- Symbol 115
- Operation mode 117
- 1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant 1 and 2 refer to 6 control of electronic expansion valve on page 149 118
- Basic control 118
- List of functions in normal operation 118
- Normal operation 118
- Compressor pi control 119
- Compressor pi control carries out the compressor capacity pi control to maintain te at constant during cooling operation and tc at constant during heating operation to ensure stable unit performance 119
- Cooling operation 119
- Heating operation 119
- Rotation of outdoor units in order to make operating time equal for each compressor of multi connection outdoor units outdoor units are used in rotation however this is not applicable to single units 119
- Rotation of outdoor units system with two outdoor units 119
- System with three outdoor units 119
- Timing of outdoor rotation in start of startup control 119
- Basic control sibe37 701_b 120
- Function 120
- Operating priority and rotation of compressors 120
- Function 110 121
- In the case of combination of 3 outdoor units the above diagram shows master unit slave unit 1 and slave unit 2 from left to right compressors may operate in any pattern other than those mentioned above according to the operating status 121
- Sibe37 701_b basic control 121
- Basic control sibe37 701_b 122
- Compressor step control compressor operations vary with the following steps according to information in 2 compressor pi control furthermore the operating priority of compressors is subject to information in 122
- Function 122
- Notes 1 inv inverter compressor std1 standard compressor 1 std2 standard compressor 2 2 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 122
- Operating priority and rotation of compressors 122
- Reyq14py1 16py1 122
- Reyq8py1 10py1 12py1 122
- Single unit installation 122
- Function 112 123
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 123
- Reyq18py1 20py1 8 10 12hp 123
- Reyq22py1 24py1 10 12 12hp 123
- Sibe37 701_b basic control 123
- Two unit multi system 123
- Basic control sibe37 701_b 124
- Function 124
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 124
- Reyq 30py1 32py1 14 16 16hp 124
- Reyq26py1 28py1 10 12 16hp 124
- Three unit multi system 124
- Function 114 125
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 125
- Reyq34py1 36py1 8 10 12 16hp 125
- Reyq38py1 40py1 10 12 12 16hp 125
- Sibe37 701_b basic control 125
- Basic control sibe37 701_b 126
- Function 126
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 126
- Reyq42py1 44py1 10 12 16 16hp 126
- Reyq46py1 48py1 14 16 16 16hp 126
- Electronic expansion valve pi control 127
- Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode 127
- Main electronic expansion valve evm control when the outdoor unit heat exchanging is performed via the evaporator 20sa is set to on this function is used to exert pi control on the electronic expansion valve y1e or y3e so that the evaporator outlet superheated degree sh will become constant 127
- Refrigerant charge electronic expansion valve evj control while in automatic refrigerant charge mode this function is used to exert pi control on the opening degree of the electronic expansion valve y2e or y4e in response to outdoor temperature and close the valve after the completion of refrigerant charge for normal operation fully open this electronic expansion valve 127
- Sh tg te sh evaporator outlet superheated degree c tg suction pipe temperature c detected by the heat exchanger gas pipe thermistor r2t te low pressure equivalent saturated temperature c 127
- Sh tsh te sh evaporator outlet superheated degree c tsh suction pipe temperature c detected by the subcooling heat exchanger outlet thermistor r5t te low pressure equivalent saturated temperature c 127
- Step control of outdoor unit fans 127
- Subcooling electronic expansion valve evt control in order to make the maximum use of the subcooling heat exchanger this function is used to exert pi control on the electronic expansion valve y2e y5e or y3e so that the evaporator side gas pipe superheated degree sh will become constant 127
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 127
- Outdoor unit fan control in cooling operation 128
- While in cooling operation if the outdoor temperature is low this mode provides high pressure control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units 128
- Function 118 129
- Heat exchanger control 129
- Multi outdoor unit system 129
- Sibe37 701_b basic control 129
- Single system 129
- While in heating or cool heat simultaneous operation ensure target condensing and evaporating temperature by changing over the air heat exchange of outdoor unit to the evaporator or the condenser in response to loads 129
- Special control 130
- Startup control 130
- Startup control in cooling operation 130
- This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined to position the four way valve the master and slave units simultaneously start up 130
- Startup control in heating operation 131
- Control 1 start multiple inv compressors in the system at one time 2 start multiple std compressors in the system at intervals of 15 seconds 132
- For startup oil return operation or setup after defrosting start up multiple compressors at a high speed according to the conditions of indoor units with thermostat on thus maximizing the equipment capacity 132
- Large capacity start up control heating 132
- Start up std compressors at intervals of 15 seconds 132
- Starting conditions 132
- The system completes defrosting operation 132
- The system starts heating operation with thermostat on at a high load 132
- The system switches the operation mode from cooling to heating or simultaneous cooling and heating operation 132
- 1 in case of multi outdoor unit system master unit it conducts the operation listed in the table above slave units operating units conduct the operation listed in the table above non operating units conduct the operation listed in the table above after the oil returning process non operating units stop while in preparation mode 133
- Cooling oil return operation 133
- Oil return operation 133
- Start conditions referring to the following conditions start cooling oil return operation integral oil rise rate is reached to specified level when cumulative compressor operating time exceeds 8 hours 2 hours when the power supply turns on for the first time furthermore the integral oil rise rate is calculated by tc te and compressor loads the higher the compressor operating step no the cumulative refrigerant oil consumption increases 133
- This function is used to recover refrigerant oil that flows out from the compressor to the system side by conducting oil return operation in order to prevent the compressor from running out of refrigerant oil 133
- 1 in case of multi outdoor unit system master unit it conducts the operation listed in the table above slave units operating units conduct the operation listed in the table above non operating units conduct the operation listed in the table above after the oil returning process non operating units stop while in preparation mode 135
- Heating oil return operation including cooling heating simultaneous operation 135
- Start conditions referring to the following conditions start heating oil return operation integral oil rise rate is reached to specified level when cumulative compressor operating time exceeds 8 hours 2 hours when the power supply turns on for the first time furthermore the integral oil rise rate is calculated by tc te and compressor loads the higher the compressor operating step no the cumulative refrigerant oil consumption increases 135
- Function 136
- Special control sibe37 701_b 136
- Defrost operation 137
- Start conditions referring to the following conditions start defrost operation when there is a decrease in the coefficient of heat transfer of outdoor unit heat exchanger when there is a drop in the temperature of outdoor unit heat exchanger outlet tb when the low pressure stays low for a certain amount of time 2 hours minimum furthermore the thermal continuity of outdoor unit heat exchanger is calculated by tc te and compressor loads 137
- If the liquid refrigerant stays in the evaporator at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance consequently in order to recover the refrigerant in the evaporator while the compressor stops the pump down residual operation is conducted 139
- Pe_min and pc_max indicate the minimum and maximum values in the system respectively 139
- Pump down residual operation 139
- Pump down residual operation in cooling operation 139
- Pe_min and pc_max indicate the minimum and maximum values in the system respectively 140
- Pump down residual operation in heating operation and simultaneous cooling heating operation 140
- Crankcase heater control 141
- In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater 141
- Restart standby 141
- Standby 141
- Used to forcedly stop the compressor for a period of 3 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 141
- In order to protect compressors if any of the following items has an abnormal value the system will make stop with thermostat off and the malfunction will be determined according to the number of retry times 142
- Stop due to malfunction 142
- Stopping operation 142
- This mode is used to define actuator operations when the system stops 142
- When system is in stop mode normal operation stop 142
- High pressure protection control 143
- In cooling operation 143
- Protection control 143
- The following control is performed in the entire system pc_max indicates the maximum value within the system 143
- This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure 143
- Heating operation and simultaneous cooling heating operation 144
- The following control is performed in the entire system pc_max indicates the maximum value within the system 144
- Because of common low pressure the following control is performed in the system pe_min indicates the minimum value within the system 145
- In cooling operation 145
- Low pressure protection control 145
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 145
- In heating operation and simultaneous cooling heating operation 146
- The following control is performed in the system pe_min indicates the minimum value within the system 146
- Contents 147
- Discharge pipe protection control 147
- Inv compressor 147
- Std compressor 147
- The following control is performed for each compressor of single unit as well as multi units 147
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 147
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 148
- Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase 148
- Inverter overcurrent protection control 148
- Inverter protection control 148
- Perform the following control of integrated as well as multi units for each inv compressor 148
- Inverter fin temperature control 149
- Perform the following control of integrated as well as multi units for each inv compressor 149
- Std compressor overload protection 150
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 150
- 1 emergency operation with remote controller reset operating method reset the remote controller press the on off button for 4 seconds or more details of operation disable the defective outdoor unit from operating and then only operate other outdoor units on systems with 1 outdoor unit this emergency operation is not available 151
- 2 emergency operation with outdoor unit pcb setting setting method make setting of the compressor the operation of which is to be disabled in field setting mode setting mode 2 for detail of the setting method refer to page 231 details of operation disable the compressor with operation disable setting made from operating and only operate other compressors on the system with 1 compressor reyq8py1 this emergency operation is not available 151
- Backup operation 151
- Demand operation 151
- Heating operation is prohibited above 24 c outdoor air temperature 151
- Heating operation prohibition 151
- If any of the compressors goes wrong disable the relevant compressor or the relevant outdoor unit from operating and then conduct emergency operation only with operational compressors or outdoor units emergency operation with remote controller reset and emergency operation with outdoor unit pcb setting are available 151
- In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using demand 1 setting or demand 2 setting to operate the unit with this mode additional setting of continuous demand setting or external input by external control adaptor is required 151
- Other control 151
- Function 152
- Operation flow chart 152
- Outline of control indoor unit 152
- Outline of control indoor unit sibe37 701_b 152
- Function 142 153
- Sibe37 701_b outline of control indoor unit 153
- A suction air thermistor in indoor unit is used for temperatures from 30 c to 25 c f 154
- And assuming suction temperature has changed from 30 c to 18 c f 154
- B suction air thermistor in indoor unit is used for temperatures from 21 c to 18 c b 154
- C room temperature thermistor in remote controller is used for temperatures from 23 c to 27 c c 154
- Cooling if there is a significant difference in the set temperature and the suction air temperature fine adjustment control is carried out using a suction air thermistor in indoor unit or using the room temperature thermistor in the remote controller near the position of the user when the suction air thermistor in indoor unit is near the set temperature 154
- D room temperature thermistor in remote controller is used for temperatures from 25 c to 21 c d 154
- E suction air thermistor in indoor unit is used for temperatures from 27 c to 30 c e 154
- Ex when cooling assuming the set temperature in the figure above is 24 c and the suction air temperature has changed from 18 c to 30 c a 154
- F this example also assumes there are several other air conditioners the vrv system is off and that temperature changes even when the thermostat sensor is off suction air thermistor in indoor unit is used for temperatures from 18 c to 23 c a 154
- Room temperature thermistor in remote controller 154
- Temperature is controlled by both the room temperature thermistor in remote controller and suction air thermistor in the indoor unit this is however limited to when the field setting for the room temperature thermistor in remote controller is set to use 154
- Thermostat control 154
- A room temperature thermistor in remote controller is used for temperatures from 28 c to 23 c d 155
- And assuming suction temperature has changed from 28 c to 18 c d 155
- B suction air thermistor in indoor unit is used for temperatures from 23 c to 18 c b 155
- C room temperature thermistor in remote controller is used for temperatures from 25 c to 28 c c 155
- D this example also assumes there are several other air conditioners the vrv system is off and that temperature changes even when the thermostat sensor is off suction air thermistor in indoor unit is used for temperatures from 18 c to 25 c a 155
- Ex when heating assuming the set temperature in the figure above is 24 c and the suction air temperature has changed from 18 c to 28 c a 155
- Function 144 155
- Heating when heating the hot air rises to the top of the room resulting in the temperature being lower near the floor where the occupants are when controlling by suction air thermistor in indoor unit only the unit may therefore be turned off by the thermostat before the lower part of the room reaches the set temperature the temperature can be controlled so the lower part of the room where the occupants are does not become cold by widening the range in which room temperature thermistor in remote controller can be used so that suction air temperature is higher than the set temperature 155
- Sibe37 701_b outline of control indoor unit 155
- Assuming that the suction air temperature at the time of starting the dry operation is tro and the suction air temperature in operation is tr 156
- Function 156
- Furthermore while in dry operation mode fans operate at l flow rate stops for a period of six minutes while the thermostat is off and then return to operation at l flow rate this control is used to prevent a rise in indoor temperature while in thermostat off mode 156
- Outline of control indoor unit sibe37 701_b 156
- Thermostat control in dry operation 156
- Thermostat control while in normal operation 156
- Vrv multi systems are set at factory to thermostat control mode using the remote controller while in normal thermostat differential control mode i e factory setting mode the thermostat turns off when the system reaches a temperature of 1 c from the set temperature while in cooling operation or of 1 c from that while in heating operation 156
- While in a single remote controller group control the body thermostat is only used for this control furthermore while in heating operation cassette mounted indoor units conduct the thermostat control by a value compensated by 2 c for the value detected with the body thermostat through field settings the thermostat differential setting can be changed from 1 c to 0 c for details on the changing procedure refer to information on page onward 156
- While in dry operation the thermostat control is conducted according to a suction air temperature at the time of starting the dry operation 156
- Cooling thermostat on cooling thermostat off 157
- Ex when automatic cooling temperature is set to 27 c 157
- Factory setting 157
- Function 146 157
- Heating thermostat off heating thermostat on 157
- Set cooling temperature a c 157
- Set heating temperature a d c d c 157
- Sibe37 701_b outline of control indoor unit 157
- Thermostat control with operation mode set to auto 157
- When the operation mode is set to auto on the remote controller the system will conduct the temperature control shown below furthermore setting changes of the differential value d c can be made according to information in the field settings with remote controller p 191 and later section 157
- 3 malfunction residual the remote controller will display a3 and the air conditioner will come to an abnormal stop if the float switch is turned off and not turned on again within 5 minutes while the cooling thermo is off 158
- Drain pump control 158
- Malfunction residual the remote controller will display a3 and the air conditioner will come to an abnormal stop in 5 minutes if the float switch is turned off while the cooling thermo is on 158
- Normal operation the objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation 158
- The drain pump is controlled by the on off buttons 4 button 1 4 given in the figure below 158
- When the float switch is tripped while the cooling thermostat is off 158
- When the float switch is tripped while the cooling thermostat is on 158
- 4 malfunction residual if the float switch is tripped five times in succession a drain malfunction is determined to have occurred af is then displayed as operation continues 5 malfunction residual the remote controller will display a3 and the air conditioner will come to an abnormal stop if the float switch is off for more than 5 minutes in the case of 4 159
- During heating operation if the float switch is not reset even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 159
- Function 148 159
- Sibe37 701_b outline of control indoor unit 159
- When the float switch is tripped and af is displayed on the remote controller 159
- When the float switch is tripped during heating operation 159
- Control of electronic expansion valve 160
- Conditions for starting when airflow direction is two way or three way conditions for starting temperature is 1ºc or less for a total of 15 minutes or 0ºc or less for 1 minute continuously 161
- Freeze prevention 161
- Freeze prevention by off cycle indoor unit 161
- Function 150 161
- Sibe37 701_b outline of control indoor unit 161
- When freeze prevention is activated the electronic expansion valve is closed the drain pump turns on and the fan tap is fixed to l airflow when the following conditions for stopping are satisfied it returns conditions for starting freeze prevention temperature is 1 c or less for total of 40 min or temperature is 5 c or less for total of 10 min conditions for stopping freeze prevention temperature is 7 c or more for 10 min continuously 161
- When the temperature detected by liquid pipe temperature thermistor r2t of the indoor unit heat exchanger drops too low the unit enters freeze prevention operation in accordance with the following conditions and is also set in accordance with the conditions given below 161
- Heater control optional pcb krp1b is required 162
- 1 l or ll only on fxfq models 163
- List of swing flap operations 163
- Swing flaps operate as shown in table below 163
- At startup with thermostat on or after the completion of defrosting in heating operation the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity detail of operation when either the start condition 1 or the start condition 2 is established the operations shown below will be conducted 164
- Hot start control in heating operation only 164
- Function 154 165
- Louver control for preventing ceiling dirt 165
- P0 p1 p2 p3 p4 165
- Sibe37 701_b outline of control indoor unit 165
- We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled this feature is available on double flow multi flow and corner types 165
- Outdoor unit pcb layout 90 3 field setting 91 166
- Part 5 test operation 166
- Test operation 56 166
- Below figure shows the installation process install in the order of the steps shown 167
- Installation process 167
- Sibe37 701_b test operation 167
- Test operation 167
- Test operation 156 167
- Check work prior to turn power supply on 168
- Follow the following procedure to conduct the initial test operation after installation 168
- Procedure and outline 168
- Calculate a necessary additional refrigerant charging amount according to the procedure for calculation shown below procedure for calculating additional refrigerant charging amount unit 0 kg 169
- Correction amount with indoor unit correction amount with a total capacity of indoor units 169
- If the refrigerant charging is still insufficient turn on the power supply following the information on the page 162 169
- If there is a refrigerant shortage charge a liquid refrigerant through the stop valve service port with the stop valves of liquid and those of gas closes after the completion of vacuum drying 169
- Turn power on 170
- Air tight test and vacuum drying 171
- Pipe insulation 172
- Additional refrigerant charge and check operation 173
- Before working 173
- Special notice of product 174
- After tightening the cap make sure no refrigerant gas is leaking 175
- Be sure to use the correct tools 175
- Do not open the stop valve until 1 check work prior to turn power supply on in page 157 are completed if the stop valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation 175
- Reyq18 48p7y1b 175
- Reyq8 16py1b 175
- Stop valve operation procedure 175
- The stop valve is not a back seat type if forced it to open it might break the valve body 175
- Tightening torque the sizes of the stop valves on each model and the tightening torque for each size are listed in the table below 175
- When operating the stop valve follow the procedure instructed below 175
- When using a service port use the charge hose 175
- H h k h h h h 177
- How to check how many units are connected 177
- It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the pcb a1p of outdoor unit in case of multi system master unit follow the procedure below to check how many indoor or outdoor units are turned on 177
- L h h h h h h 177
- L h h h k h k 177
- L h h k h h h 177
- L h l h l l h 177
- Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 h1p off default 177
- Procedure of adding refrigerant charging and check operation reyq8 16py1b 178
- Procedure of adding refrigerant charging 179
- 4 push the test button bs4 once the led displays will change as below 180
- 5 hold the test button bs4 down for 5 seconds or more the led displays will change as below and fan of outdoor unit will start rotation 180
- 6 when the compressor start working and the led displays change any state in below 3 go to in case of cooling mode or in case of heating mode in accordance with the led displays 180
- 9 when the compressor stop working the fan may continue rotation close the valve a immediately 8 and check the led displays are as below and the remote controller display shows p9 code 180
- After checking push the mode button bs1 once and the charging is complete 180
- Automatic refrigerant charging operation procedure 180
- Beware the fan running when open the front panel the fan may continue rotation after the system stop the operation 180
- Blinking 180
- Go to in case of cooling mode 180
- Go to in case of heating mode 180
- H1p h2p h3p h4p h5p h6p h7p 180
- In case of cooling mode 7 push the test button bs4 once within 5 minutes after procedure 5 4 and close the all front panels 5 after that open the valve a immediately see bottom figure on page 168 6 and watch the remote controller display of indoor unit 8 if the remote controller display shows pe code 7 ready to close the valve a and go to procedure 9 if the remote controller display shows other code close the valve a immediately and refer to remote controller cooling mode malfunction code on page 170 180
- Note the marks of led mean as follows 180
- Off on or blinking 1 open the liquid pipe suction gas pipe and hp lp gas pipe stop valves the valve a c must be closed see figure 31 2 close the el compo box 1 lid and all front panel except on the el compo box 1 side 1 and turn the power to the outdoor unit and all connected bs indoor units 2 after h2p stop blinking about 12 minutes after turning on the power check h2p is off if h2p is on check the malfunction code in the remote controller of indoor unit and correct the malfunction in accordance with remote controller display malfunction code on page 172 3 check the led and push the mode button bs1 once if the led displays is not as below 180
- Test operation 180
- Test operation sibe37 701_b 180
- Procedure of check operation 182
- Additional refrigerant charge 183
- Air tight test 183
- Before test run 183
- Check operation 183
- Check that all work for the bs indoor unit are finished and there are no danger to operate 183
- Heating is not possible if the outdoor temperature is 24 c or higher refer to the operation manual 183
- If a knocking sound can be heard in the liquid compression of the compressor stop the unit immediately and then energize the crankcase heater for a sufficient length of time before restarting the operation 183
- Installation error remedial action 183
- Make sure the following works are completed in accordance with the installation manual 183
- Note if any malfunction codes other than the above are displayed check the service manual for how to respond 183
- Once stopping the compressor will not restart in about 5 minutes even if the on off button of the remote controller is pushed 183
- Piping work 183
- Remote controller displays malfunction code 183
- Sibe37 701_b test operation 183
- Test operation 172 183
- Test run 183
- Test run after all works are completed operate the unit normally and check the following 1 make sure the indoor and outdoor units are operating normally 2 operate each indoor unit one by one and make sure the corresponding outdoor unit is also operating 3 check to see if cold or hot air is coming out from the indoor unit 4 push the fan direction and strength buttons on the remote controller to see if they operate properly 183
- The outdoor unit fan may rotate at low speeds if the night time low noise setting or the external low noise level setting is made but this is not a malfunction 183
- Vacuum drying 183
- When the system operation is stopped by the remote controller the outdoor units may continue operating for further 5 minutes at maximum 183
- Wiring work 183
- Procedure for additional refrigerant charge and check operation reyq18 48p7y1b remq8 16p7y1b 185
- H h k h h h h 187
- K k k k k k k 187
- H l h h h h k 188
- L l h h h k h l l h h h k k 188
- L l h h k h k 188
- L l l k k k k 188
- H l h h h h k 189
- H l h h h k h 189
- H l h h h k k 189
- L l l h k h k 189
- Code for signalling that automatic charging will be finished in about 10 minutes when the unit stops operating close valve a immediately and check the leds and check if the 190
- Code is displayed on the remote controller 190
- Code may not be displayed but instead the 190
- Code will be displayed immediately 190
- Complete the display on the remote controller shows a flashing 190
- If the led indication is not as shown above correct the malfunction as indicated in the display of the remote controller and restart the complete charging procedure when the charging amount is little the 190
- K l l k k k k 190
- Normal system display 190
- Note always close valve a and remove the refrigerant tank immediately after finishing the refrigerant charge operation the refrigerant charge port of these units have electronic expansion valves that will close automatically when refrigerant charging operation has finished however the electronic expansion valves will be opened when other operations start after finishing refrigerant charging operation if the refrigerant tank is left with the valve open the amount of refrigerant which is properly charged may be off the point 190
- Press the bs1 mode button once and the charging is complete record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back side of the front panel perform the test procedure as described in test operation on page 186 190
- Are the stop valves for both liquid and gas open 191
- Checks after adding refrigerant 191
- Is the amount of refrigerant that has been added recorded 191
- Make sure to open the stop valves after charging the refrigerant operating with the stop valves closed will damage the compressor 191
- Remote controller cooling mode malfunction codes 191
- Remote controller malfunction code display remote controller heating mode malfunction codes 191
- Sibe37 701_b test operation 191
- Test operation 180 191
- H h k h h h h 192
- How to check how many units are connected 192
- L h h h h h h 192
- L h h h k h k 192
- L h l h l l h 192
- Before operation 193
- Checks before initial start up 193
- Service precautions 193
- Field setting 194
- Blinking 195
- Check operation procedure 1 turn the power on for the outdoor unit and the indoor unit be sure to turn the power on at least 6 hours before operation in order to have power running to the crankcase heater 2 make sure that transmission is normal by checking the led display on the outdoor unit circuit board a1p if transmission is normal each led will be displayed as shown below 195
- For changing the set mode 195
- For field setting 195
- For resetting the address when the wiring is changed or when an additional indoor unit is installed 195
- For test operation 195
- H h h h h h h 195
- H h h h h h h h 195
- H h k h h h h k 195
- H k h h h h h 195
- Led state throughout the manual the state of the leds is indicated as follows 195
- Setting the push button switch bs1 5 function of the push button switch which is located on the outdoor unit pcb a1p 195
- Sibe37 701_b test operation 195
- Test operation 184 195
- The figure shows state of the led indications when the unit is shipped from the factory 195
- A additional refrigerant charging operation 196
- And the button is pushed once the setting mode will change to setting mode 1 196
- B refrigerant recovery operation vacuuming operation 196
- C automatic low noise operation setting at nighttime 196
- D low noise operation level setting via the external control adaptor 196
- E power consumption limitation setting via the external control adaptor 196
- F enabling function of the low noise operation level setting and or power consumption limitation setting via the external control adaptor dta104a61 62 196
- For setting mode 1 press the button once the h1p led is off 196
- For setting mode 2 press the button for 5 seconds the h1p led is on 196
- G high static pressure setting 196
- H evaporating temperature setting 196
- H1p h2p h3p h4p h5p h6p h7p 196
- If the h1p led is blinking 196
- Note if you get confused in the middle of the setting process push the button then it returns to setting mode 1 h1p led is off 196
- Possible functions 196
- Setting mode 2 the h1p led is on setting procedure 1 push the button according to the required function a h the led indication that matches the required function is shown below in the field marked 196
- Setting the mode the set mode can be changed with the button according to the following procedure 196
- Test operation 196
- Test operation sibe37 701_b 196
- This mode is not available for heat recovery units 196
- When the button is pushed the current setting is defined 3 push the button according to the required setting possibility as shown below in the field marked 3 possible settings for function a b f and g are on or off 196
- Abnormal 197
- Confirmation of the set mode the following items can be confirmed by setting mode 1 h1p led is off check the led indication in the field marked 1 indication of the present operation state 197
- Do not insert fingers rods or other objects into the air inlet or outlet when the fan is rotating at high speed it will cause injury 197
- Do not perform the test operation while working on the indoor units when performing the test operation not only the outdoor unit but the connected indoor unit will operate as well working on a indoor unit while performing a test operation is dangerous 197
- Indication of low noise operation state 197
- Indication of power consumption limitation setting 197
- Normal 197
- Operation 197
- Possible settings for function c the noise of level 3 level 2 level 1 197
- Possible settings for function d and e for function d only the noise of level 3 level 2 level 1 for function e only the power consumption of level 1 level 2 level 3 197
- Possible settings for function h the evaporating temperature level h high level m medium level l low 197
- Push the button and the setting is defined 5 when the button is pushed again the operation starts according to the setting refer to the service manual for more details and for other settings 197
- Sibe37 701_b test operation 197
- Standard operation factory setting 197
- Test operation 197
- Test operation 186 197
- Under preparation or under test operation 197
- Service mode operation 199
- Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc status 200
- Caution when the 400 volt power supply is applied to n phase by mistake replace inverter pcb a2p and control transformer t1r t2r in switch box together 200
- Operation when power is turned on 200
- Tap the reset button on the outdoor unit pcb operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status 200
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 200
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pcb has been changed 200
- When turning on power first time 200
- When turning on power the second time and subsequent 200
- Outdoor unit pcb 201
- Outdoor unit pcb layout 201
- Field setting 202
- Field setting from remote controller 202
- Caution 203
- Wireless remote controller indoor unit 204
- 7 4 5 6 2 8 205
- Simplified remote controller 205
- Field setting sibe37 701_b 206
- Notes 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes however cannot be checked except in the individual mode for those in parentheses 2 the mode numbers inside parentheses cannot be used by wireless remote controllers so they cannot be set individually setting changes also cannot be checked 3 marked are factory setting 4 do not make settings other than those described above nothing is displayed for functions the indoor unit is not equipped with 5 88 may be displayed to indicate the remote controller is resetting when returning to the normal mode 6 if the setting mode to equipped heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit 7 the fxmq50 63 80 100 125 140pve cannot be set to 30pa the fxmq20 25 32 40pve cannot be set to 180 or 200pa 206
- Setting contents and code no vrv indoor unit 206
- Test operation 206
- Applicable range of field setting 207
- Sibe37 701_b field setting 207
- Static pressure selection 207
- Test operation 196 207
- 1 filter sign setting if switching the filter sign on time set as given in the table below set time 208
- 2 ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 208
- 3 selection of thermistor select the thermistor to control room temperature 208
- 4 filter cleaning displayed or not displayed whether or not to display filter cleaning after operation of certain duration can be selected 208
- 5 airflow adjustment auto external static pressure settings make settings in either method a or method b as explained below a use the airflow auto adjustment function to make settings airflow auto adjustment the volume of blow off air is automatically adjusted to the rated quantity b select external static pressure with remote controller check that 01 off is set for the second code no in mode no 21 for airflow adjustment on an indoor unit basis in table 4 the second code no is set to 01 off at factory setting change the second code no as shown in table according to the external static pressure of the duct to be connected 208
- Detailed explanation of setting modes 208
- Setting table 208
- The factory setting for the second code no is 01 and room temperature is controlled by the indoor unit suction air thermistor and room temperature thermistor in remote controller when the second code no is set to 02 room temperature is controlled by the suction air thermistor when the second code no is set to 03 room temperature is controlled by the room temperature thermistor in remote controller 208
- 10 setting of operation mode to auto this setting makes it possible to change differential values for mode selection while in automatic operation mode 209
- 6 optional output switching using this setting operation output signal and abnormal output signal can be provided output signal is output between terminals k1 and k2 of customized wiring adaptor an optional accessory 209
- 7 external on off input this input is used for on off operation and protection device input from the outside the input is performed from the t1 t2 terminal of the operation terminal block x1a in the electric component box 209
- 8 thermostat switching differential value during thermostat on off control can be changed for details refer to 6 thermostat control while in normal operation on p 45 209
- 9 airflow setting when heating thermostat is off this setting is used to set airflow when heating thermostat is off 209
- F2 t1 t2 209
- Setting table 209
- The automatic operation mode setting is made by the use of the operation mode selector button 209
- When thermostat off airflow volume up mode is used careful consideration is required before deciding installation location during heating operation this setting takes precedence over 7 fan stop when thermostat is off 209
- 11 auto restart after power failure reset for the air conditioners with no setting for the function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off however for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure 210
- 12 airflow when cooling thermostat is off this is used to set air flow to ll airflow when cooling thermostat is off 210
- 13 setting of normal airflow make the following setting according to the ceiling height the second code no is set to 01 at the factory 210
- Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 2 in the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 210
- For the above reasons when the unit is set enabling to utilize auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 210
- In the case of fxaq fxhq 210
- In the case of fxfq100 125 210
- In the case of fxfq25 80 210
- 14 airflow direction setting set the airflow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory setting to 01 211
- 15 operation of downward flow flap yes no only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 211
- 16 setting of airflow direction adjustment range make the following airflow direction setting according to the respective purpose 211
- 17 setting of the static pressure selection for fxdq model 211
- Setting table 211
- Some indoor unit models are not equipped with draft prevention upward function 211
- 18 external static pressure settings for fxmq p model 212
- 19 humidification when heating thermostat is off setting to humidification setting turns on the humidifier if suction air temperature is 20ºc or above and turns off the humidifier if suction air temperature is 18ºc or below when the heating thermostat is off 212
- 20 setting of direct duct connection this is used when fresh air intake kit equipped with fan is connected the indoor fan carries out residual operation for one minute after the thermostat is stopped for the purpose of preventing dust on the air filter from falling off 212
- 21 interlocked operation between humidifier and drain pump this is used to interlock the humidifier with the drain pump when water is drained out of the unit this setting is unnecessary 212
- The second code no is set to 07 an external static pressure of 100 pa at factory setting 1 the fxmq50 63 80 100 125 140pve cannot be set to 30 pa 2 the fxmq20 25 32 40pve cannot be set to 180 or 200 pa 212
- 22 individual setting of ventilation this is set to perform individual operation of heat reclaim ventilation using the remote controller central unit when heat reclaim ventilation is built in switch only when heat reclaim ventilation is built in 213
- Brc1e type in order to conduct the centralized remote control using the centralized remote controller and the unified on off controller group no settings should be made by group using the operating remote controller make group no settings for centralized remote control using the operating remote controller 214
- Centralized control group no setting 214
- For setting group no of hrv and wiring adaptor for other air conditioners etc refer to the instruction manual attached 214
- For wireless remote controller see the following 214
- Notice enter the group no and installation place of the indoor unit into the attached installation table be sure to keep the installation table with the operation manual for maintenance 214
- Contents of control modes 216
- Setting of operation control mode from remote controller local setting 216
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 217
- Factory setting 217
- How to select operation mode whether operation by remote controller will be possible or not for turning on off controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below 217
- Field setting from outdoor unit 218
- List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 223 onward 218
- For setting items of 1 refer to detailed information provided on page 215 onward 219
- 1 factory setting of initial pcb do not make any changes in all factory settings of the dip switches on the control pcb 220
- Caution 220
- Dip switch detail 220
- Dip switch setting after changing the main pcb a1p to spare parts pcb after the replacement by the spare pcb be sure to make settings shown below when you change the main pcb a1p to spare parts pcb please carry out the following setting 220
- For detail of the setting procedure refer to information on the following pages while the pcb assembly is replaced the u3 malfunction test run not carried out yet code is displayed in this case carry out the test run again if the pj ua or u7 malfunction code is displayed recheck for dip switch settings after the completion of rechecking for the settings turn on the power supply again 220
- Make the following settings according to models of outdoor units all models are set to off at factory refer to following pages for setting detail 220
- Setting at replacement by spare pcb 220
- Setting by dip switches 220
- Detail of ds1 1 4 ds2 1 4 setting 221
- Sibe37 701_b field setting 221
- Test operation 210 221
- Field setting sibe37 701_b 222
- Test operation 222
- Allocation application model setting method represents the position of switches 223
- For europe 223
- Heat recovery 10hp remq10py1b 223
- Heat recovery 12hp remq12py1b 223
- Heat recovery 14hp remq14py1b 223
- Heat recovery 16hp remq16py1b 223
- Heat recovery 8hp remq8py1b 223
- Multiple type 223
- Set ds1 4 and ds2 4 to on 223
- Set ds1 4 ds2 2 and ds2 3 to on 223
- Set ds1 4 ds2 2 and ds2 4 to on 223
- Set ds1 4 ds2 2 ds2 3 and ds2 4 to on 223
- Set ds1 4 ds2 3 and ds2 4 to on 223
- Sibe37 701_b field setting 223
- Test operation 212 223
- Factory setting 224
- H h h h h h h h 224
- H h h h h h h l 224
- H h k h h h h h 224
- H h k h h h h k 224
- Mode changing procedure 1 224
- Monitor mode h1p blinks used to check the program made in setting mode 2 224
- Setting by push button switches 224
- Setting mode 1 h1p off initial status when normal used to select the cool heat setting also indicates during abnormal low noise control and demand control 224
- Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 224
- The following settings are made by push button switches on pcb in case of multi outdoor unit system various items should be set with the master unit setting with the slave unit is disabled the master unit and slave unit can be discriminated with the led display as shown below 224
- There are the following three setting modes 224
- Mode changing procedure 2 225
- Sibe37 701_b field setting 225
- Test operation 214 225
- A setting mode 1 226
- Field setting sibe37 701_b 226
- Test operation 226
- This mode is used to set and check the following items check items the following items can be checked 1 current operating conditions normal abnormal in check operation 2 low noise operating conditions in normal operation in low noise operation 3 demand operating conditions in normal operation in demand operation 226
- B setting mode 2 227
- Bs5 rewiring 228
- The numbers in the no column represent the number of times to press the set bs2 button 228
- Cool heat mode switching 233
- Example of connecting transmission wiring connect the transmission wirings as shown in the fig 1 233
- Example of transmission line connection 233
- F1 f2 f1 f2 233
- Set cool heat separately for each bs unit by cool heat selector 233
- Set remote controller change over switch ss1 ss2 as following 233
- Sibe37 701_b field setting 233
- Test operation 222 233
- When using cool heat selector connect to the terminal a b and c on the ec of the electric parts box 233
- When using cool heat selector turn this switch to the bs side 233
- Setting of low noise operation and demand operation 234
- Image of operation in the case of a 235
- Image of operation in the case of a and b 235
- Image of operation in the case of b 235
- Sibe37 701_b field setting 235
- Test operation 224 235
- A when the demand operation is carried out by external contact with the use of the external control adaptor for outdoor unit 1 connect the external adaptor of the outdoor unit and then connect the external input wiring to the low noise operation input terminal on the terminal block x1m refer to the figure shown below 2 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 3 if necessary while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 236
- B when the normal demand operation is carried out use of the external control adaptor for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of alternate demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 236
- Setting of demand operation by connecting the external contact input to the demand input of the outdoor unit external control adaptor optional the power consumption of unit operation can be saved suppressing the compressor operating condition 236
- Image of operation in the case of a 237
- Image of operation in the case of a and b 237
- Image of operation in the case of b 237
- Sibe37 701_b field setting 237
- Test operation 226 237
- Setting of refrigerant recovery mode 240
- Check operation detail 241
- Check operation function 241
- H h k h h h h 241
- H l h h h h k 241
- H l h h h k h 241
- H l h h h k k 241
- H l h h k h h 241
- H l h h k h k 241
- H l h h k k h 241
- H l h k h h k 241
- H l h k h k h 241
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 241
- Operating procedure 241
- Press mode button bs1 once and reset setting mode 2 241
- Setting of vacuuming mode 241
- Use the vacuum pump to perform vacuuming operation 241
- With setting mode 2 while the unit stops set refrigerant recovery vacuuming mode to on the expansion valves of indoor and outdoor units fully open and some of solenoid valves open h2p blinks to indicate the test operation and the remote controller displays test operation and under centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation 241
- Emergency operation 242
- Disabling the compressor 2 on the left side from operating set no 39 of setting mode 2 to disable compressor 2 operation 243
- Disabling the outdoor unit 1 to operate set no 38 of setting mode 2 to disable outdoor unit 1 operation 243
- Disabling the outdoor unit 2 from operating set no 39 of setting mode 2 to disable outdoor unit 2 operation 243
- Disabling the outdoor unit 3 from operating set no 40 of setting mode 2 to disable outdoor unit 1 operation 243
- H h h h h h h 243
- H h h h h h h l 243
- H h k h h h h 243
- H h k h h h h k 243
- K h h h h h 243
- K h h h h h h 243
- K h h h h l h 243
- K k h h k k h 243
- K k h h k k k 243
- K k h k h h h 243
- Make disable operation setting by each outdoor unit make the following setting on the outdoor unit 1 if this setting is made on an outdoor unit other than the outdoor unit 2 the setting will become invalid it is possible to tell the outdoor units 1 2 and 3 according the led displays shown below 243
- Sibe37 701_b field setting 243
- Test operation 232 243
- Cancel disabling the compressor 1 on the right side from operating set no 38 disable compressor 1 operation of setting mode 2 to off 244
- Cancel disabling the compressor 2 on the left side from operating set no 39 disable compressor 2 operation of setting mode 2 to off 244
- Cancel disabling the outdoor unit 1 from operating set no 38 disable outdoor unit 1 operation of setting mode 2 to off 244
- Cancel of emergency operation to cancel the emergency operation conduct the following setting return to factory setting 244
- Cancel the disable operation setting by each outdoor unit make the following setting on the outdoor unit 1 if this setting is made on an outdoor unit other than the outdoor unit 2 the setting will become invalid it is possible to tell the outdoor units 1 2 and 3 according the led displays shown below 244
- Field setting sibe37 701_b 244
- H h h h h h h 244
- H h h h h h h l 244
- H h k h h h h 244
- H h k h h h h k 244
- K h h h h h 244
- K h h h h h h 244
- K h h h h l h 244
- K k h h k k h 244
- K k h h k k k 244
- Test operation 244
- Cancel disabling the outdoor unit 2 from operating set no 39 disable outdoor unit 2 operation of setting mode 2 to off 245
- Cancel disabling the outdoor unit 3 from operating set no 40 disable outdoor unit 3 operation of setting mode 2 to off 245
- H h k h h h h 245
- K h h h h h 245
- K h h h h h h 245
- K h h h h l h 245
- K k h h k k k 245
- K k h k h h h 245
- Sibe37 701_b field setting 245
- Test operation 234 245
- Prevention of micro heating in non operating unit 246
- Reduction of cooling heating selection time of bs units 246
- Part 6 troubleshooting 247
- Symptom based troubleshooting 39 2 troubleshooting by remote controller 42 247
- Troubleshooting by indication on the remote controller 59 247
- Troubleshooting op centralized remote controller 71 249
- Troubleshooting op unified on off controller 76 249
- Symptom based troubleshooting 250
- On power up the message connection under check please wait for a moment will be displayed on the remote controller screen then that message will disappear and the basic screen will be displayed to access a mode from the basic screen refer to the figure below when any of the operation buttons is pressed the backlight will come on and remains lit for about 30 seconds be sure to press a button while the backlight is on this does not apply to the on off button 253
- Sibe37 701_b troubleshooting by remote controller 253
- The following modes can be selected by using the inspection test operation button on the remote control 253
- The inspection test button 253
- Troubleshooting 242 253
- Troubleshooting by remote controller 253
- 1 checking a malfunction or warning 254
- Explanation the following will be displayed on the screen when a malfunction or a warning occurs during operation check the malfunction code and take the corrective action specified for the particular model 254
- Self diagnosis by wired remote controller 254
- Self diagnosis by wireless remote controller 255
- Advance button backward button 256
- The lower digit of the code changes as shown below when the up and down buttons are pressed 256
- Sibe37 701_b troubleshooting by remote controller 257
- Troubleshooting 246 257
- 1 f c j 258
- Inspection mode 258
- Operating the inspection test button on the remote controller will make it possible to check the malfunction codes indoor unit model codes and outdoor unit model codes while in inspection mode 258
- Remote controller service mode 259
- Remote controller self diagnosis function 262
- Test run mode 262
- 1 checking a malfunction or warning 263
- 2 taking corrective action 263
- Press the menu enter button to check the malfunction code 263
- Take the corrective action specific to the model 263
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 265
- Detail description on next page 266
- Malfunction code indication by outdoor unit pcb 266
- Push the mode bs1 button and returns to setting mode 1 266
- Push the return bs3 button and switches to the initial status of monitor mode 266
- Push the return bs3 button once to display first digit of malfunction code 266
- Push the set bs2 button and set the led display to a setting item 266
- Push the set bs2 button once to display malfunction location 266
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 266
- Push the set bs2 button once to display second digit of malfunction code 266
- Refer to page 220 for monitor mode 266
- To enter the monitor mode push the mode bs1 button when in setting mode 1 266
- Troubleshooting 266
- Troubleshooting by remote controller sibe37 701_b 266
- All systems system 267
- Master 267
- Multi system 267
- Sibe37 701_b troubleshooting by remote controller 267
- Slave 1 267
- Slave 2 267
- Troubleshooting 256 267
- Detail description on next page 268
- Push the mode bs1 button and returns to setting mode 1 268
- Push the return bs3 button and switches to the initial status of monitor mode 268
- Push the return bs3 button once to display first digit of malfunction code 268
- Push the set bs2 button and set the led display to a setting item 268
- Push the set bs2 button once to display malfunction location 268
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 268
- Push the set bs2 button once to display second digit of malfunction code 268
- Refer to page 220 for monitor mode 268
- To enter the monitor mode push the mode bs1 button when in setting mode 1 268
- Troubleshooting 268
- Troubleshooting by remote controller sibe37 701_b 268
- All systems system 269
- Master 269
- Multi system 269
- Sibe37 701_b troubleshooting by remote controller 269
- Slave 1 269
- Slave 2 269
- Troubleshooting 258 269
- Indoor unit error of external protection device 270
- Troubleshooting by indication on the remote controller 270
- Indoor unit pcb defect 271
- Indoor unit malfunction of drain level control system s1l 272
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 273
- Sibe37 701_b troubleshooting by indication on the remote controller 273
- Troubleshooting 273
- Troubleshooting 262 273
- Indoor unit fan motor m1f lock overload 274
- 1 if any junction connector is provided between the connector x20a on the indoor unit pcb and the fan motor also check whether or not the junction connector is properly connected 2 all resistance measuring points and judgement criteria 275
- Are there any foreign matters around the fan 275
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 275
- Properly connect the connector 275
- Remove the foreign matters 275
- Replace the fan motor 275
- Replace the indoor unit pcb 275
- Sibe37 701_b troubleshooting by indication on the remote controller 275
- Troubleshooting 275
- Troubleshooting 264 275
- Turn off the power supply and then wait for a period of 10 minutes 275
- Indoor unit malfunction of indoor unit fan motor 276
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 278
- Troubleshooting 278
- Troubleshooting by indication on the remote controller sibe37 701_b 278
- Sibe37 701_b troubleshooting by indication on the remote controller 279
- Troubleshooting 268 279
- Indoor unit malfunction of swing flap motor m1s 280
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 281
- Sibe37 701_b troubleshooting by indication on the remote controller 281
- Troubleshooting 281
- Troubleshooting 270 281
- Abnormal power supply voltage 282
- Applicable models fxmq20 140p 282
- Connection defect on signal line 282
- Detect malfunction checking the input voltage of fan motor 282
- Instantaneous blackout others 282
- Malfunction decision conditions 282
- Method of malfunction detection 282
- Power supply voltage malfunction 282
- Remote controller display 282
- Supposed causes the possible causes are 282
- Troubleshooting 282
- When the input voltage of fan motor is 150v and below or 386v and above 282
- Wiring defect 282
- Electronic expansion valve malfunction dust clogging 283
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 284
- Troubleshooting 284
- Troubleshooting by indication on the remote controller sibe37 701_b 284
- Indoor unit malfunction of electronic expansion valve coil 285
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 286
- Troubleshooting 286
- Troubleshooting by indication on the remote controller sibe37 701_b 286
- Indoor unit drain level above limit 287
- Indoor unit malfunction of capacity determination device 288
- Indoor unit failure of transmission between indoor unit pcb and fan pcb 289
- After confirmation turn off the power take off the short circuit and connect x70a back to original condition 290
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 290
- Determination 01 normal other than 01 transmission defect on indoor pcb 290
- Method to check transmission part of indoor pcb turn off the power and remove the connecter x70a of indoor pcb a1p short circuit x70a after turning on the power check below numbers under local setting remote control confirmation first code no at the condition of second code no 21 on mode no 41 290
- Pull out and insert the connecter once and check it is absolutely connected 290
- Troubleshooting 290
- Troubleshooting by indication on the remote controller sibe37 701_b 290
- Indoor unit malfunction of thermistor r2t for heat exchanger 291
- Indoor unit malfunction of thermistor r3t for gas pipes 292
- Indoor unit failure of combination between indoor unit pcb and fan pcb 293
- Indoor unit malfunction of thermistor r1t for suction air 294
- Indoor unit malfunction of room temperature thermistor in remote controller 295
- Outdoor unit pcb defect 296
- Outdoor unit actuation of high pressure switch 297
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 298
- Troubleshooting 298
- Troubleshooting by indication on the remote controller sibe37 701_b 298
- Outdoor unit actuation of low pressure sensor 299
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 300
- Troubleshooting 300
- Troubleshooting by indication on the remote controller sibe37 701_b 300
- Outdoor unit inverter compressor motor lock 301
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 302
- Troubleshooting 302
- Troubleshooting by indication on the remote controller sibe37 701_b 302
- Abnormal case 303
- Applicable models reyq8p 48p 303
- Closed stop value 303
- Detects the overcurrent with current sensor ct 303
- Faulty compressor 303
- Faulty current sensor a6p a7p 303
- Faulty magnetic switch 303
- Improper power voltage 303
- Malfunction decision conditions 303
- Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 303
- Method of malfunction detection 303
- Obstacles at the air outlet 303
- One of the possible factors may be chattering due to rough mgs contact 303
- Outdoor unit std compressor motor overcurrent lock 303
- Remote controller display 303
- Supposed causes 303
- The current sensor value is 0 during std compressor operation 303
- The current sensor value is more than 15 a during std compressor stop 303
- Troubleshooting 303
- V unit 15 a 303
- Outdoor unit malfunction of outdoor unit fan motor 304
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 305
- Check in the monitor mode 305
- Check the color of relay connectors 305
- Check the connection status of the connectors 305
- Correct the connection of the relay connectors 305
- Cut the power supply off and wait for 10 minutes 305
- Fan motor 1 both power supply wire and signal wire are all white 305
- Fan motor 1 relay connector or x1a x2a of compressor inverter pcb 305
- Fan motor 2 both power supply wire and signal wire are red in the pcb side and white in the motor side 305
- Fan motor 2 relay connector or x1a x2a of fan inverter pcb 305
- Hp 18hp class models have 2 fans check electric motor electric motor 1 or 2 corresponding to malfunction code e7 in the monitor mode of outdoor unit pcb refer to p 55 p 56 for how to check 305
- Insert the connector 305
- Relay connectors have any connection error 305
- Remove the foreign substances 305
- Sibe37 701_b troubleshooting by indication on the remote controller 305
- Troubleshooting 305
- Troubleshooting 294 305
- Troubleshooting 306
- Troubleshooting by indication on the remote controller sibe37 701_b 306
- Outdoor unit malfunction of electronic expansion valve coil y1e y5e 307
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 308
- Troubleshooting 308
- Troubleshooting by indication on the remote controller sibe37 701_b 308
- Outdoor unit abnormal discharge pipe temperature 309
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 310
- Refer to thermistor resistance temperature characteristics table on p450 310
- Troubleshooting 310
- Troubleshooting by indication on the remote controller sibe37 701_b 310
- Outdoor unit refrigerant overcharged 311
- Outdoor unit malfunction of bs unit electronic expansion valve 312
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 313
- Sibe37 701_b troubleshooting by indication on the remote controller 313
- Troubleshooting 313
- Troubleshooting 302 313
- Outdoor unit abnormal outdoor fan motor signal 314
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 315
- Sibe37 701_b troubleshooting by indication on the remote controller 315
- Troubleshooting 315
- Troubleshooting 304 315
- Outdoor unit malfunction of thermistor r1t for outdoor air 316
- Applicable models reyq8p 48p 317
- Defective compressor 317
- Faulty current sensor a6p a8p 317
- Faulty outdoor unit pcb 317
- Malfunction decision conditions 317
- Malfunction is detected according to the current value detected by current sensor 317
- Method of malfunction detection 317
- Outdoor unit current sensor malfunction 317
- Remote controller display 317
- Supposed causes 317
- Troubleshooting 317
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 317
- Outdoor unit malfunction of discharge pipe thermistor r31t r32t r33t 318
- Outdoor unit malfunction of temperature sensor for heat exchanger gas r2t or r11t 319
- Outdoor unit malfunction of thermistor r8t or r10t for suction pipe 320
- Outdoor unit malfunction of thermistor r4t or r12t for outdoor unit heat exchanger 321
- Outdoor unit malfunction of liquid pipe thermistor 1 r6t r9t or r14t 322
- Outdoor unit malfunction of liquid pipe thermistor 2 r7t or r15t 323
- Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t or r13t 324
- Outdoor unit malfunction of high pressure sensor 325
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 326
- Malfunction code pressure sensor subject to malfunction code electric symbol ja high pressure sensor s1nph 326
- Pressure sensor subject to malfunction code 326
- Refer to pressure sensor pressure voltage characteristics table on p452 326
- Troubleshooting 326
- Troubleshooting by indication on the remote controller sibe37 701_b 326
- Voltage measurement point 326
- Outdoor unit malfunction of low pressure sensor 327
- Refer to pressure sensor pressure voltage characteristics table on p452 328
- Troubleshooting 328
- Troubleshooting by indication on the remote controller sibe37 701_b 328
- Voltage measurement point 328
- Outdoor unit malfunction of inverter pcb 329
- 1 list of inverter pcbs 330
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 330
- Troubleshooting 330
- Troubleshooting by indication on the remote controller sibe37 701_b 330
- Outdoor unit malfunction of inverter radiation fin temperature rise 331
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 332
- Troubleshooting 332
- Troubleshooting by indication on the remote controller sibe37 701_b 332
- Inverter pcb for compressor 333
- Refer to thermistor resistance temperature characteristics table on p450 333
- Outdoor unit momentary overcurrent of inverter compressor 334
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 335
- Sibe37 701_b troubleshooting by indication on the remote controller 335
- Troubleshooting 324 335
- Troubleshooting compressor inspection 335
- Outdoor unit momentary overcurrent of inverter compressor 336
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 337
- Sibe37 701_b troubleshooting by indication on the remote controller 337
- Troubleshooting 326 337
- Troubleshooting output current check 337
- Outdoor unit inverter compressor starting failure 338
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 339
- Sibe37 701_b troubleshooting by indication on the remote controller 339
- Troubleshooting 339
- Troubleshooting 328 339
- Troubleshooting 340
- Troubleshooting by indication on the remote controller sibe37 701_b 340
- Outdoor unit malfunction of transmission between inverter and control pcb 341
- 1 list of inverter pcbs 342
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 342
- Troubleshooting 342
- Troubleshooting by indication on the remote controller sibe37 701_b 342
- Sibe37 701_b troubleshooting by indication on the remote controller 343
- Troubleshooting 343
- Troubleshooting 332 343
- Outdoor unit inverter over ripple protection 344
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 345
- Sibe37 701_b troubleshooting by indication on the remote controller 345
- Troubleshooting 345
- Troubleshooting 334 345
- Outdoor unit malfunction of inverter radiation fin temperature rise sensor 346
- Inverter pcb for compressor 347
- Refer to thermistor resistance temperature characteristics table on p450 347
- Outdoor unit faulty field setting after replacing main pcb or faulty combination of pcb 348
- 1 list of inverter pcbs 349
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 349
- Sibe37 701_b troubleshooting by indication on the remote controller 349
- Troubleshooting 349
- Troubleshooting 338 349
- Outdoor unit refrigerant shortage alert 350
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 351
- Sibe37 701_b troubleshooting by indication on the remote controller 351
- Troubleshooting 351
- Troubleshooting 340 351
- Applicable models reyq8p 48p 352
- Defect of outdoor pcb a1p 352
- Malfunction decision conditions 352
- Method of malfunction detection 352
- Power supply open phase 352
- Power supply reverse phase 352
- Remote controller display 352
- Reverse phase open phase 352
- Supposed causes 352
- The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 352
- Troubleshooting 352
- When a significant phase difference is made between phases 352
- Outdoor unit power supply insufficient or instantaneous failure 353
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 354
- Troubleshooting 354
- Troubleshooting by indication on the remote controller sibe37 701_b 354
- Sibe37 701_b troubleshooting by indication on the remote controller 355
- Troubleshooting 355
- Troubleshooting 344 355
- Applicable models reyq8p 48p 356
- Check operation is executed or not executed 356
- Check operation is not executed 356
- Malfunction decision conditions 356
- Malfunction is decided when the unit starts operation without check operation 356
- Method of malfunction detection 356
- Outdoor unit check operation is not executed 356
- Remote controller display 356
- Supposed causes 356
- Troubleshooting 356
- Malfunction of transmission between indoor units and outdoor units 357
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 358
- Troubleshooting 358
- Troubleshooting by indication on the remote controller sibe37 701_b 358
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 359
- Sibe37 701_b troubleshooting by indication on the remote controller 359
- Troubleshooting 359
- Troubleshooting 348 359
- Applicable models all indoor unit models 360
- Connection of two main remote controllers when using 2 remote controllers 360
- Defect of indoor unit pcb 360
- Defect of remote controller pcb 360
- In case of controlling with 2 remote controller check the system using micro computer is signal transmission between indoor unit and remote controller main and sub is normal 360
- Indoor unit malfunction of transmission between remote controller and indoor unit 360
- Malfunction decision conditions 360
- Malfunction of indoor unit remote controller transmission 360
- Malfunction of transmission caused by noise 360
- Method of malfunction detection 360
- Normal transmission does not continue for specified period 360
- Remote controller display 360
- Supposed causes 360
- Troubleshooting 360
- Outdoor unit transmission failure across outdoor units 361
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 362
- Troubleshooting 362
- Troubleshooting by indication on the remote controller sibe37 701_b 362
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 363
- Sibe37 701_b troubleshooting by indication on the remote controller 363
- Troubleshooting 363
- Troubleshooting 352 363
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 364
- Troubleshooting 364
- Troubleshooting by indication on the remote controller sibe37 701_b 364
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 365
- Sibe37 701_b troubleshooting by indication on the remote controller 365
- Troubleshooting 365
- Troubleshooting 354 365
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 366
- Troubleshooting 366
- Troubleshooting by indication on the remote controller sibe37 701_b 366
- Applicable models all indoor unit models 367
- Connection between sub remote controllers 367
- Defect of remote controller pcb 367
- In case of controlling with 2 remote controller check the system using micro computer if signal transmission between indoor unit and remote controller main and sub is normal 367
- Indoor unit malfunction of transmission between main and sub remote controllers 367
- Malfunction decision conditions 367
- Malfunction of transmission between main and sub remote controller 367
- Method of malfunction detection 367
- Normal transmission does not continue for specified period 367
- Remote controller display 367
- Supposed causes 367
- Troubleshooting 367
- Indoor unit malfunction of transmission between indoor and outdoor units in the same system 368
- Improper combination of indoor and outdoor units indoor units and remote controller 369
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 370
- Troubleshooting 370
- Troubleshooting by indication on the remote controller sibe37 701_b 370
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 371
- Sibe37 701_b troubleshooting by indication on the remote controller 371
- Troubleshooting 371
- Troubleshooting 360 371
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 372
- Troubleshooting 372
- Troubleshooting by indication on the remote controller sibe37 701_b 372
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 373
- Sibe37 701_b troubleshooting by indication on the remote controller 373
- Troubleshooting 373
- Troubleshooting 362 373
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 374
- Troubleshooting 374
- Troubleshooting by indication on the remote controller sibe37 701_b 374
- Address duplication of centralized controller 375
- Malfunction of transmission between centralized controller and indoor unit 376
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 377
- Sibe37 701_b troubleshooting by indication on the remote controller 377
- Troubleshooting 377
- Troubleshooting 366 377
- Troubleshooting 378
- Troubleshooting by indication on the remote controller sibe37 701_b 378
- System is not set yet 379
- Malfunction of system refrigerant system address undefined 380
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 381
- Sibe37 701_b troubleshooting by indication on the remote controller 381
- Troubleshooting 381
- Troubleshooting 370 381
- Pcb defect 382
- Troubleshooting op centralized remote controller 382
- Applicable models centralized remote controller intelligent touch controller schedule timer 383
- Defect of pcb of optional controllers for centralized control 383
- Detect the malfunction according to diii net transmission data the system will be automatically reset 383
- Malfunction decision conditions 383
- Malfunction of transmission between optional controllers for centralized control 383
- Method of malfunction detection 383
- Remote controller display 383
- Supposed causes 383
- Troubleshooting 383
- When no master controller is present at the time of the startup of slave controller when the centralized controller which was connected once shows no response 383
- Improper combination of optional controllers for centralized control 384
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 385
- Sibe37 701_b troubleshooting op centralized remote controller 385
- Troubleshooting 385
- Troubleshooting 374 385
- Address duplication improper setting 386
- Address duplication of centralized controller 386
- Applicable models centralized remote controller intelligent touch controller schedule timer 386
- Detect the malfunction according to diii net transmission data 386
- Malfunction decision conditions 386
- Method of malfunction detection 386
- Remote controller display 386
- Supposed causes 386
- Troubleshooting 386
- Two or more units of centralized remote controllers and intelligent touch controllers are connected and all of them are set to master unit central setting or slave unit central setting 386
- Two units of schedule timers are connected 386
- Operation lamp blinks 387
- Troubleshooting op unified on off controller 387
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 388
- Troubleshooting 388
- Troubleshooting op unified on off controller sibe37 701_b 388
- Display under centralized control blinks repeats single blink 389
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 390
- Troubleshooting 390
- Troubleshooting op unified on off controller sibe37 701_b 390
- Sibe37 701_b troubleshooting op unified on off controller 391
- Troubleshooting 380 391
- Display under centralized control blinks repeats double blink 392
- Check 1 check on connector of fan motor power supply cable 1 turn off the power supply measure the resistance between phases of u v w at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected 393
- Check 2 1 turn off the power supply 2 measure the resistance between vcc and each phase of u v w and gnd and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected furthermore to use a multiple meter for measurement connect the probe of negative pole to vcc and that of positive pole to gnd 393
- Sibe37 701_b troubleshooting op unified on off controller 393
- Troubleshooting 382 393
- Bend collapse 394
- Check 3 check the factors of overheat operation referring to the fault tree analysis fta shown below probe the faulty points 394
- Defective control pcb 394
- Defective solenoid valve coil defective solenoid valve body 394
- Defective valve body 394
- Defective valve body defective low pressure sensor 394
- Defective valve coil 394
- Faulty hot gas bypass control 394
- Four way valve is in the middle position leak from hot gas bypass valve 394
- Judgement criteria of superheat operation 1 suction gas superheating temperature 10 degrees and over 2 discharge gas superheating temperature 45 degrees and over except for immediately after starting and drooping control etc use the above stated values as a guide depending on the other conditions the unit may be normal despite the values within the above scope 394
- Refer to low pressure protection control for hot gas bypass control 394
- Refer to subcooling electronic expansion valve control 394
- Refrigerant gas shortage 394
- Stop valve is closed 394
- Superheating temperature control in heating mode is conducted by outdoor unit electronic expansion valve evm 394
- Troubleshooting 394
- Troubleshooting op unified on off controller sibe37 701_b 394
- Check 4 power transistor check 395
- Pcb and circuit diagram 395
- Point of measurement and judgement criteria 395
- Preparation 395
- Sibe37 701_b troubleshooting op unified on off controller 395
- Troubleshooting 384 395
- Check 5 check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 396
- Troubleshooting 396
- Troubleshooting op unified on off controller sibe37 701_b 396
- Check 6 check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 397
- Sibe37 701_b troubleshooting op unified on off controller 397
- Troubleshooting 386 397
- Check 8 master unit central connector setting table the master unit central setting connector cn1 x1a is mounted at the factory to independently use a single unit of the intelligent touch controller or a single unit of the centralized remote controller do not dismount the master unit central setting connector i e use the connector with the factory setting unchanged to independently use the schedule timer insert an independent use setting connector no independent use setting connector has been mounted at the factory insert the connector which is attached to the casing of the main unit in the pcb cn1 x1a independent use connector master unit central setting connector to use two or more centralized controller in combination make settings according to the table shown below 399
- Sibe37 701_b troubleshooting op unified on off controller 399
- Troubleshooting 388 399
- Check 9 master slave unit setting table combination of intelligent touch controller and centralized remote controller 400
- Troubleshooting 400
- Troubleshooting op unified on off controller sibe37 701_b 400
- 1 superheated degree control in cooling operation is exercised with the indoor unit electronic expansion valve 2 superheated degree control in heating operation is exercised with the outdoor unit electronic expansion valve ev1 3 guideline of superheated degree to judge as wet operation 1 suction gas superheated degree not more than 3 c 2 discharge gas superheated degree not more than 15 c except immediately after compressor starts up or is running under drooping control use the values shown above as a guideline even if the superheated degree falls in the range the compressor may be normal depending on other conditions 401
- Check 10 check for causes of wet operation referring to the fault tree analysis fta shown below identify faulty points 401
- Dirty evaporator 401
- Dirty filter 401
- Faulty control pcb 401
- Faulty control pcb including faulty capacity setting 401
- Faulty crankcase heater 401
- Faulty fan motor 401
- Faulty indoor unit gas pipe thermistor 401
- Faulty indoor unit liquid pipe thermistor 401
- Faulty valve body 401
- Faulty valve coil 401
- Obstacles 401
- Refer to information in the check 6 section overcharge of refrigerant 401
- Refrigerant accumulation 401
- Sibe37 701_b troubleshooting op unified on off controller 401
- Troubleshooting 390 401
- Check 11 check for overcharge of refrigerant in case of vrv systems the only way to judge as the overcharge of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control as information for making a judgement refer to information provided below 402
- Cooling 402
- Diagnosis of overcharge of refrigerant 1 high pressure rises consequently overload control is exercised to cause scant cooling capacity 2 the superheated degree of suction gas lowers or the wet operation is performed consequently the compressor becomes lower in discharge pipe temperature despite of pressure loads 3 the supercooled degree of condensate rises consequently in heating operation the temperature of outlet air passing through the supercooled section becomes lower 402
- Frequency 402
- Heating 402
- High pressure 402
- Low pressure 402
- Troubleshooting 402
- Troubleshooting op unified on off controller sibe37 701_b 402
- Check 12 check for shortage of refrigerant in case of vrv systems the only way to judge as the shortage of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control as information for making a judgement refer to information provided below 403
- Cooling 403
- Diagnosis of shortage of refrigerant 1 the superheated degree of suction gas rises consequently the compressor discharge gas temperature becomes higher 2 the superheated degree of suction gas rises consequently the electronic expansion valve turns open 3 low pressure drops to cause the unit not to demonstrate cooling capacity heating capacity 403
- Frequency 403
- Heating 403
- High pressure 403
- Low pressure 403
- Sibe37 701_b troubleshooting op unified on off controller 403
- Troubleshooting 392 403
- Check 14 list of inverter related malfunction codes 405
- Sibe37 701_b troubleshooting op unified on off controller 405
- Troubleshooting 394 405
- Current 406
- L1 p4 l4 pj p1 u2 406
- Malfunction codes related to compressor current 406
- Max control 406
- Example of connection 46 7 thermistor resistance temperature characteristics 50 8 pressure sensor 52 9 method of checking the inverter s power transistors and diode modules 53 407
- List of electrical and functional parts 31 407
- Option list 40 407
- Part 7 appendix 407
- Piping diagrams 97 407
- Piping installation point 43 407
- Wiring diagrams for reference 08 407
- Appendix 408
- Outdoor unit 408
- Piping diagrams 408
- Piping diagrams sibe37 701_b 408
- Reyq8p 10p 12p 408
- Appendix 398 409
- D058153b 409
- Reyq14p 16p 409
- Sibe37 701_b piping diagrams 409
- Appendix 410
- D057743 410
- Piping diagrams sibe37 701_b 410
- Remq8p 410
- Appendix 400 411
- D057742 411
- Remq10p 12p 411
- Sibe37 701_b piping diagrams 411
- Appendix 412
- D057741 412
- Piping diagrams sibe37 701_b 412
- Remq14p 16p 412
- Appendix 402 413
- Fxfq p 413
- Indoor unit 413
- Refrigerant flow 413
- Refrigerant pipe connection port diameters 413
- Sibe37 701_b piping diagrams 413
- Appendix 414
- Fxzq20m 25m 32m 40m 50m φ 12 φ 6 414
- Mm model gas liquid 414
- Piping diagrams sibe37 701_b 414
- Refrigerant pipe connection port diameters 414
- Fxcq fxdq25 25 m fxsq 415
- Refrigerant pipe connection port diameters 415
- Fxkq ma fxhq ma fxlq ma fxnq ma fxmq ma 416
- Fxdq nb pb 417
- Fxmq20p 25p 32p 40p 50p 63p 80p 100p 125p 140pve 417
- Refrigerant pipe connection port diameters 417
- Appendix 418
- Bs unit 418
- Piping diagrams sibe37 701_b 418
- Appendix 408 419
- Outdoor unit 419
- Outer shell 419
- Reyq8p 10p 12py1b 419
- Sibe37 701_b wiring diagrams for reference 419
- Terminal of m1c m2c 419
- Wiring diagrams for reference 419
- Appendix 420
- L1 l2 l3 n 420
- Note 3 420
- Outer shell 420
- Power supply 3n 380 415v 50hz 420
- Reyq14p 16py1b 420
- This dwg 420
- Wiring diagrams for reference sibe37 701_b 420
- X21a x22a x23a 420
- X28a x20a 420
- X4a n3 420
- X61a z9c 420
- X7a x6a x2m 420
- Z1c n 2 420
- Z3c x6a 420
- Z6c x1a 420
- Appendix 410 421
- El compo box 421
- Indoor f1 f2 outdoor f1 f2 421
- Note 5 421
- Notes 1 this wiring diagram is applied only to the outdoor unit 2 field wiring 3 terminal strip connector terminal protective earth screw 4 when using the optional adaptor refer to the installation manual of the optional adaptor 5 for connection wiring to indoor outdoor transmission f1 f2 outdoor outdoor transmission f1 f2 outdoor multi transmission q1 q2 refer to the installation manual 6 how to use bs1 5 refer to service precaution label on el compo box cover 7 when operating don t short circuit the protection device s1ph 8 colors blk black red red blu blue wht white grn green 421
- Power supply 421
- Remq8p7y1b 421
- Sibe37 701_b wiring diagrams for reference 421
- Terminal of m1c 421
- X23a blu x22a blk 421
- X29a x1m 421
- X4a x6a 421
- Z1c n 2 421
- Z5c 5 x2a x1a 421
- Appendix 422
- Remq10p 12p7y1b 422
- Wiring diagrams for reference sibe37 701_b 422
- Appendix 412 423
- Remq14p 16p7y1b 423
- Sibe37 701_b wiring diagrams for reference 423
- Appendix 424
- Field wiring 424
- Reyq8p 10p 12p 14p 16py1b 424
- Wiring diagrams for reference sibe37 701_b 424
- Appendix 414 425
- Reyq18p 20p 22p 24p 26p 28p 30p 32p7y1b 425
- Sibe37 701_b wiring diagrams for reference 425
- Appendix 426
- Reyq34p 36p 38p 40p 42p 44p 46p 48p7y1b 426
- Wiring diagrams for reference sibe37 701_b 426
- 125 class 427
- Appendix 416 427
- Colors red red prp purple org orange 427
- Connector 427
- Connector blk black gry gray grn green 427
- Field wiring 427
- Fxfq20p 25p 32p 40p 50p 63p 80p 100p 125p8veb 427
- In case of using central remote control connect it to the unit in accordance with the attached installation manual 2 x24a x33a x35a en x38a are connected when the optional accessories are being used 3 when connecting the input wires from outside forced of on off control operation can be selected by the remote controller see installation manual for more details 4 confirm the method of setting the selector switch ss1 ss2 by installation manual and engineering data etc 427
- Indoor unit 427
- Sibe37 701_b wiring diagrams for reference 427
- Terminal 427
- Wht white blu blue 427
- Ylw yellow pnk pink 427
- 25 32 40 50 class 22 28 36 45 56 class 428
- Appendix 428
- Fxzq20m 25m 32m 40m 50m9v1b 428
- In case of using a remote controller connect it to the unit in accordance to the attached installation manual 2 x23a is connected when the wireless remote controller kit is being used 3 when connecting the input wires from outside forced off or on off control operation can be selected by remote controller in details refer to the installation manual attached to the unit 4 remote controller model varies according to the combination system see technical data and catalogs etc before connection 428
- Terminal 428
- Wiring diagrams for reference sibe37 701_b 428
- 22 28 36 71 class 429
- 25 32 63 class 429
- Appendix 418 429
- Fxcq20m 25m 32m 63m8v3b 429
- Sibe37 701_b wiring diagrams for reference 429
- 45 56 90 140 class 430
- 50 80 125 class 430
- Appendix 430
- Fxcq40m 50m 80m 125m8v3b 430
- Wiring diagrams for reference sibe37 701_b 430
- Appendix 420 431
- Fxkq25ma 32ma 40ma 63mave 431
- Sibe37 701_b wiring diagrams for reference 431
- Appendix 432
- Fxdq20pb 25pb 32pb 40nb 50nb 63nbve 432
- Wiring diagrams for reference sibe37 701_b 432
- 25 class 22 28 class 433
- Appendix 422 433
- Fxdq20m 25m9v3b 433
- Sibe37 701_b wiring diagrams for reference 433
- Appendix 434
- Fxsq20p 25p 32p 40p 50p 63p 80p 100p 125p7veb 434
- Wiring diagrams for reference sibe37 701_b 434
- Appendix 424 435
- Fxmq20p 25p 32p 40p 50p 63p 80p 100p 125p 140pve 435
- R1t r2t r3t r4t 435
- R1t ss1 435
- S1l v1r v2r x1m 435
- Sibe37 701_b wiring diagrams for reference 435
- Appendix 436
- Fxmq200ma 250mave 436
- Wiring diagrams for reference sibe37 701_b 436
- Appendix 426 437
- Fxhq32ma 63ma 100mave 437
- Sibe37 701_b wiring diagrams for reference 437
- Appendix 438
- Fxaq20ma 25ma 32ma 40ma 50ma 63mave9 438
- Remote controller model varies according to the combination system confirm engineering data and catalogs etc before connecting 438
- Wiring diagrams for reference sibe37 701_b 438
- Appendix 428 439
- Fxlq20ma 25ma 32ma 40ma 50ma 63mave fxnq20ma 25ma 32ma 40ma 50ma 63mave 439
- Sibe37 701_b wiring diagrams for reference 439
- Appendix 440
- Bs unit 440
- Bsv4q100pv1 440
- D063928b 440
- Electric expansion valve main discharge 440
- Electric expansion valve main suction 440
- Electric expansion valve sub cool 440
- Electric expansion valve sub discharge 440
- Electric expansion valve sub suction 440
- To in d unit 440
- To out d unit 440
- Wiring diagrams for reference sibe37 701_b 440
- Y1e y5e 440
- Appendix 430 441
- Bs unit top all other identical places 441
- Bsv6q100pv1 441
- D063929b 441
- El compo box 441
- For using dip switch ds1 2 refer to installation manual or service precaution label on el compo box cover 441
- Notes 1 this wiring diagram applies to the bs unit only 2 terminal strip connector field wiring protective earth 3 when using the cool heat selector optional accessory connect it to terminals a b and c on x2m a1p a4p 4 as for wiring to the x2m x9m control refer to installation manual 5 symbols show as follows blu blue red red 441
- Power supply 220 240v 50hz 441
- Sibe37 701_b wiring diagrams for reference 441
- Use copper conductors only 7 dip switch ds1 2 initial settings are as follows 441
- X1m l n blu 441
- Y1e y5e 441
- Z1c n 2 441
- List of electrical and functional parts 442
- Outdoor unit 442
- Reyq8py1 12py1 442
- Reyq14py1 16py1 443
- Remq8py1 12py1 444
- Remq14py1 16py1 445
- Appendix 446
- Indoor side 446
- Indoor unit 446
- List of electrical and functional parts sibe37 701_b 446
- Appendix 436 447
- Sibe37 701_b list of electrical and functional parts 447
- Appendix 448
- List of electrical and functional parts sibe37 701_b 448
- Appendix 438 449
- Sibe37 701_b list of electrical and functional parts 449
- Appendix 450
- List of electrical and functional parts sibe37 701_b 450
- 2 up to 2 adaptors can be fixed for each installation box 3 only one installation box can be installed for each indoor unit 4 up to 2 installation boxes can be installed for each indoor unit 5 installation box no 8 is necessary for second adaptor 6 installation box no 8 is necessary for each adaptor 7 this adaptor is required when connecting with optional controller for centralized control 8 brc2a51 is also available 451
- Appendix 440 451
- Note 1 installation box for adaptor must be procured on site 451
- Note 1 installation box no is necessary for each adaptor marked 451
- Operation control system optional accessories 451
- Option list 451
- Option list of controllers 451
- Sibe37 701_b option list 451
- System configuration 451
- Various pcbs 451
- Appendix 452
- Building management system 452
- Installation box for adaptor must be procured on site 452
- Is a registered trade mark of echelon corporation 452
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 452
- Lonwork 452
- Option list sibe37 701_b 452
- Appendix 442 453
- Option lists outdoor unit 453
- Reyq18 32py1 453
- Reyq34 48py1 453
- Reyq8 16py1 453
- Sibe37 701_b option list 453
- Appendix 454
- In the case of 2m or less 454
- In the case of 2m or more 454
- Piping installation point 454
- Piping installation point sibe37 701_b 454
- Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope 454
- The projection part between multi connection piping kits 454
- When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit 454
- The example of a wrong pattern 455
- 1 indicate the outdoor unit multi connection piping kit 2 in case of multi outdoor system re read outdoor unit to the first outdoor unit multi connection piping kit as seen from the indoor unit 457
- 1 piping from outdoor unit to bs unit 457
- 2 piping from bs unit to indoor unit or piping from refrigerant branch kit to indoor unit used as cooling only 457
- 6 indoor unit cooling only 457
- 8 indoor unit cooling only 457
- Actual and equivalent pipe length 457
- Actual pipe length 457
- Allowable length after the branch 457
- B1 b4 bs unit 1 6 457
- B1 b4 bs unit 1 6 indoor unit cool heat selection possible 7 8 indoor unit cooling only 457
- B1 b5 bs unit 1 4 7 8 457
- Between outdoor unit 2 and indoor unit 457
- Bold 3 pipes suction gas pipe hp lp gas pipe liquid pipe 457
- Branch with refnet joint branch with refnet joint and header branch with refnet header 457
- Bs unit 457
- Difference in height between outdoor unit and indoor unit h1 457
- Equivalent length 457
- Example 6 a b 457
- Example of connection 457
- Example of connection connection of 8 indoor units 457
- First outdoor unit multi connection piping kit outdoor unit outdoor unit 457
- Indoor unit side 457
- M 8 a m n p 457
- M 8 m n p 457
- M actual pipe length from first outdoor unit multi connection piping kit to outdoor unit 457
- M actual pipe length from first refrigerant branch kit either refnet joint or refnet header to indoor unit 457
- M difference in height between adjacent outdoor units h3 457
- M equivalent pipe length between outdoor unit 2 and indoor unit 457
- M equivalent pipe length from first outdoor unit multi connection piping kit to outdoor unit 457
- M example 6 b 457
- M example 8 a b c d e s 457
- M example 8 a o 457
- M example 8 o 457
- M max 40m if the outdoor unit is below difference in height between adjacent indoor units h2 457
- M note 1 457
- M note 2 example 8 b c d e s 457
- Multi outdoor system reyq 18 48 457
- Outdoor unit 457
- Outdoor unit outdoor unit outdoor unit 457
- Outdoor unit side 457
- Pipe length between outdoor unit 2 and indoor unit 457
- Single outdoor system reyq 8 16 457
- Thin 2 pipes suction gas pipe liquid pipe 457
- Total piping length from outdoor unit 2 to all indoor unit 457
- Choose from the following table in accordance with the capacity type of the outdoor unit connected unit mm 458
- Outdoor unit multi connection piping kit and refrigerant branch kit selection 458
- Pipe size selection 458
- Piping between refrigerant branch kits piping between refrigerant branch kit and bs unit piping between bs unit and refrigerant branch kit 458
- Unit mm 458
- Appendix 450 461
- Indoor unit for suction air r1t for liquid pipe r2t for gas pipe r3t 461
- Outdoor unit for fin thermistor r1t 461
- Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 461
- Sibe37 701_b thermistor resistance temperature characteristics 461
- Thermistor resistance temperature characteristics 461
- Appendix 462
- Outdoor unit thermistors for discharge pipe r3t r3 462
- Thermistor resistance temperature characteristics sibe37 701_b 462
- Pressure sensor 463
- Abnormal voltage e g overvoltage surge thunder or unbalanced voltage in order to replace the faulty inverter be sure to check for the points aforementioned 464
- According to the checking aforementioned it is probed that the malfunction results from the faulty inverter the following section describes supposed causes of the faulty inverter 464
- Electronic circuit 464
- Entry of conductive foreign particles 464
- Faulty compressor ground leakage 464
- Faulty fan motor ground leakage 464
- Inverter pcb 464
- Method of checking the inverter s power transistors and diode modules 464
- To make measurement disconnect all connectors and terminals 464
- Diode module checking 465
- Power module checking 465
- When using the analog type of multiple tester make measurement in resistance measurement mode in the x1 465
- When using the digital type of multiple tester make measurement in diode check mode 465
- Part 8 466
- Part 8 precautions for new refrigerant r 410a 466
- Precautions for new refrigerant r 410a 466
- Precautions for new refrigerant r 410a 56 466
- About refrigerant r 410a 467
- Characteristics of new refrigerant r 410a 1 performance almost the same performance as r 22 and r 407c 2 pressure working pressure is approx 1 times more than r 22 and r 407c 3 refrigerant composition few problems in composition control since it is a quasi azeotropic mixture refrigerant 467
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 467
- Outline 467
- Precautions for new refrigerant r 410a 467
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 467
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 467
- Dairep ver2 468
- Precautions for new refrigerant r 410a 468
- Precautions for new refrigerant r 410a sibe37 701_b 468
- Thermodynamic characteristic of r 410a 468
- Refrigerant cylinders 469
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 470
- Copper tube material and thickness 470
- O soft annealed h hard drawn 470
- R 410a is used under higher working pressure compared to previous refrigerants r 22 r 407c furthermore the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems therefore gauge manifolds and charge hoses that are used with a previous refrigerant r 22 r 407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 470
- Service tools 470
- Tool compatibility 470
- Conventional flaring tools can be used when the work process is changed change of work process previously a pipe extension margin of 0 to 0 mm was provided for flaring for r 410a air conditioners perform pipe flaring with a pipe extension margin of 1 to 1 mm for clutch type only conventional tool with pipe extension margin adjustment can be used 471
- Differences change of dimension a 471
- Flaring tool 471
- Specifications dimension a 471
- Revision history 476
- Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 if the outdoor unit is to be installed close to the sea shore direct exposure to the sea breeze should be avoided if you need to install the outdoor unit close to the sea shore contact your local distributor 477
- Ask a qualified installer or contractor to install this product do not try to install the product yourself improper installation can result in water or refrigerant leakage electrical shock fire or explosion 477
- Cautions on product corrosion 477
- Daikin industries ltd s products are manufactured for export to numerous countries throughout the world daikin industries ltd does not have control over which products are exported to and used in a particular country prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used this statement does not purport to exclude restrict or modify the application of any local legislation 477
- Http www daikin com global_ac 477
- If you have any enquiries please contact your local importer distributor and or retailer 477
- Read the user s manual carefully before using this product the user s manual provides important safety instructions and warnings be sure to follow these instructions and warnings 477
- Sibe37 701_b printed in japan 12 2010 ak 477
- Use only those parts and accessories supplied or specified by daikin ask a qualified installer or contractor to install those parts and accessories use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion 477
- Warning 477
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