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Daikin REYQ42P8Y1B [114/494] Pressure equalizing when switching operation cooling heating
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Refrigerant Flow for Each Operation Mode SiBE37-704_A
103 Refrigerant Circuit
Pressure equalizing when switching operation cooling / heating
1. When switching operation from to cooling to heating
First, the electric 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 electric expansion valve of the indoor unit is
opened to start the operation as a heating circuit.
In cooling
operation
In equalization
To heating
operation
Indoor Unit
BS Unit
Cooling
Unit
EVSC
Liquid
Pipe
EVHS
EVH
EVLS
EVL
Dual
Pressure
Gas Pipe
Suction
Pipe
Indoor Unit
BS Unit
EVSC
Liquid
Pipe
EVHS
(Open)
EVH
(Close)
EVLS
(Close)
EVL (Close)
Dual
Pressure
Gas Pipe
Suction
Pipe
(Close)
Indoor Unit
BS Unit
Heating
Unit
EVSC
Liquid
Pipe
EVHS
EVH
EVLS
EVL
Dual
Pressure
Gas Pipe
Suction
Pipe
Содержание
- Basic control 09 2
- Combination of outdoor units 4 model selection 2
- Function general 06 2
- Functional parts layout 3 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 0 2
- Part 4 function 05 2
- R 410a heat recovery 50hz 2
- Refrigerant circuit 1 2
- Refrigerant flow for each operation mode 8 2
- Specifications 0 2
- Table of contents 2
- Other control 42 3
- Outdoor unit pcb layout 03 3 field setting 04 3
- Outline of control indoor unit 43 3
- Part 5 test operation 57 3
- Part 6 troubleshooting 50 3
- Protection control 34 3
- Special control 21 3
- Symptom based troubleshooting 53 2 troubleshooting by remote controller 56 3
- Test operation 58 3
- Troubleshooting by indication on the remote controller 73 4
- Troubleshooting op centralized remote controller 85 5
- Troubleshooting op unified on off controller 90 5
- Example of connection r 410a type 64 7 thermistor resistance temperature characteristics 68 8 pressure sensor 70 9 method of checking the inverter s power transistors and diode modules 71 6
- List of electrical and functional parts 48 6
- Option list 58 6
- Part 7 appendix 10 6
- Part 8 precautions for new refrigerant r 410a 73 6
- Piping diagrams 11 6
- Piping installation point 61 6
- Precautions for new refrigerant r 410a 74 6
- Wiring diagrams for reference 23 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 44p 46p 48p 13
- Indoor units 13
- Model names of indoor outdoor units 13
- Note fxdq has following 2 series as show below fxdq p nave with drain pump bev unit is required for fxuq only ma rohs directive models specifications dimensions and other functions are not changed compared with m type 13
- Outdoor units normal series 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 704_a 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 704_a 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
- Way blow ceiling suspended unit connection unit series 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 704_a 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 704_a model selection 17
- Vrv iii heat recovery series 17
- Connectable indoor unit 18
- Equivalent output 0 hp 1hp 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 704_a 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 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 18
- Note fxdq has following 2 series as shown below fxdq p nave with drain pump bev unit is required for fxuq only 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 704_a specifications 21
- Specifications 21
- Specifications 10 21
- Specifications 22
- Specifications sibe37 704_a 22
- Sibe37 704_a specifications 23
- Specifications 12 23
- Specifications 24
- Specifications sibe37 704_a 24
- Sibe37 704_a specifications 25
- Specifications 14 25
- Specifications 26
- Specifications sibe37 704_a 26
- Sibe37 704_a specifications 27
- Specifications 16 27
- Specifications 28
- Specifications sibe37 704_a 28
- Sibe37 704_a specifications 29
- Specifications 18 29
- Specifications 30
- Specifications sibe37 704_a 30
- Sibe37 704_a specifications 31
- Specifications 20 31
- Indoor units 32
- Roundflow ceiling mounted cassette 32
- Specifications 32
- Specifications sibe37 704_a 32
- Roundflow ceiling mounted cassette 33
- Sibe37 704_a specifications 33
- Specifications 22 33
- Roundflow ceiling mounted cassette 34
- Specifications 34
- Specifications sibe37 704_a 34
- Sibe37 704_a specifications 35
- Specifications 24 35
- 600 4 way blow ceiling mounted cassette 36
- Specifications 36
- Specifications sibe37 704_a 36
- Sibe37 704_a specifications 37
- Specifications 26 37
- Specifications 38
- Specifications sibe37 704_a 38
- Way blow ceiling mounted cassette 38
- Sibe37 704_a specifications 39
- Specifications 28 39
- Way blow ceiling mounted cassette 39
- Specifications 40
- Specifications sibe37 704_a 40
- Sibe37 704_a specifications 41
- Specifications 30 41
- Specifications 42
- Specifications sibe37 704_a 42
- Ceiling mounted corner cassette 43
- Sibe37 704_a specifications 43
- Specifications 32 43
- Specifications 44
- Specifications sibe37 704_a 44
- Sibe37 704_a 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 704_a 46
- Sibe37 704_a specifications 47
- Slim concealed ceiling unit with drain pump 47
- Specifications 36 47
- Specifications 48
- Specifications sibe37 704_a 48
- Concealed ceiling unit small 49
- Sibe37 704_a specifications 49
- Specifications 38 49
- Specifications 50
- Specifications sibe37 704_a 50
- Concealed ceiling unit 51
- Sibe37 704_a specifications 51
- Specifications 40 51
- Concealed ceiling unit 52
- Specifications 52
- Specifications sibe37 704_a 52
- Concealed ceiling unit 53
- Sibe37 704_a specifications 53
- Specifications 42 53
- Concealed ceiling unit 54
- Specifications 54
- Specifications sibe37 704_a 54
- Concealed ceiling unit 55
- Sibe37 704_a specifications 55
- Specifications 44 55
- Specifications 56
- Specifications sibe37 704_a 56
- Sibe37 704_a specifications 57
- Specifications 46 57
- Concealed ceiling unit large 58
- Specifications 58
- Specifications sibe37 704_a 58
- Sibe37 704_a specifications 59
- Specifications 48 59
- Ceiling suspended unit 60
- Specifications 60
- Specifications sibe37 704_a 60
- Sibe37 704_a specifications 61
- Specifications 50 61
- Specifications 62
- Specifications sibe37 704_a 62
- Wall mounted unit 62
- Sibe37 704_a specifications 63
- Specifications 52 63
- Wall mounted unit 63
- Floor standing unit 64
- Specifications 64
- Specifications sibe37 704_a 64
- Floor standing unit 65
- Sibe37 704_a specifications 65
- Specifications 54 65
- Concealed floor standing unit 66
- Specifications 66
- Specifications sibe37 704_a 66
- Concealed floor standing unit 67
- Sibe37 704_a specifications 67
- Specifications 56 67
- Specifications 68
- Specifications sibe37 704_a 68
- Way blow ceiling suspended unit 68
- Bev units 69
- Sibe37 704_a specifications 69
- Specifications 58 69
- Way blow ceiling suspended unit 69
- Bs units 70
- Connection range for bs unit 70
- Specifications 70
- Specifications sibe37 704_a 70
- Functional parts layout 3 71
- Part 3 refrigerant circuit 71
- Refrigerant circuit 1 71
- Refrigerant flow for each operation mode 8 71
- Refrigerant circuit 72
- Refrigerant circuit sibe37 704_a 72
- Reyq8p 10p 12p 72
- Dual pressure gas pipe 73
- Gauge port 73
- Heat exchanger 1 73
- Heat exchanger 2 73
- Liquid pipe 73
- Refrigerant circuit 62 73
- Reyq8p 10p 12p 8hp 10hp 12hp single type inv unit std unit 73
- Sibe37 704_a 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 704_a 74
- Reyq14p 16p 74
- Gauge port 75
- Heat exchanger 1 75
- Heat exchanger 2 75
- Liquid pipe 75
- Refrigerant circuit 64 75
- Reyq14p 16p 14hp 16hp single type inv unit 2 75
- Sibe37 704_a refrigerant circuit 75
- Stop valve 75
- Subcooling heat exchanger 1 75
- Subcooling heat exchanger 2 75
- Suction pipe 75
- Refrigerant circuit 76
- Refrigerant circuit sibe37 704_a 76
- Remq8p multi 8hp 76
- Liquid pipe 77
- Refrigerant circuit 66 77
- Remq8p 77
- Sibe37 704_a refrigerant circuit 77
- Stop valve 77
- Stop valve dual pressure gas pipe 77
- Stop valve equalizing pipe 77
- Stop valve suction pipe 77
- Refrigerant circuit 78
- Refrigerant circuit sibe37 704_a 78
- Remq10p 12p multi 10 12hp 78
- Liquid pipe 79
- Refrigerant circuit 68 79
- Remq10p 12p 79
- Sibe37 704_a refrigerant circuit 79
- Stop valve 79
- Stop valve dual pressure gas pipe 79
- Stop valve equalizing pipe 79
- Suction pipe 79
- Refrigerant circuit 80
- Refrigerant circuit sibe37 704_a 80
- Remq14p 16p multi 14 16hp 80
- Liquid pipe 81
- Refrigerant circuit 70 81
- Remq14p 16p 81
- Sibe37 704_a refrigerant circuit 81
- Stop valve 81
- Stop valve dual pressure gas pipe 81
- Stop valve equalizing pipe 81
- Suction pipe 81
- Bs unit functional parts 82
- Bsv4q100pv1 6q100pv1 82
- Indoor side 82
- Outdoor side 82
- Fxcq fxfq fxzq fxkq fxdq fxsq fxmq fxhq fxaq fxlq fxnq 83
- Indoor units 83
- Front view 84
- Functional parts layout 84
- Functional parts layout sibe37 704_a 84
- Note for reference numbers refer to page 61 84
- Refrigerant circuit 84
- Reyq8p 10p 12p 84
- Front view 85
- Note for reference numbers refer to page 63 85
- Refrigerant circuit 74 85
- Reyq14p 16p 85
- Sibe37 704_a functional parts layout 85
- Front view 86
- Functional parts layout sibe37 704_a 86
- Note for reference numbers refer to page 65 86
- Refrigerant circuit 86
- Remq8p 86
- Front view 87
- Note for reference number refer to page 67 87
- Refrigerant circuit 76 87
- Remq10p 12p 87
- Sibe37 704_a functional parts layout 87
- Front view 88
- Functional parts layout sibe37 704_a 88
- Note for reference number refer to page 69 88
- Refrigerant circuit 88
- Remq14p 16p 88
- Bs unit 89
- Cooling unit 89
- Fan off 89
- Fan on 89
- Indoor unit 89
- Indoor unit operation 89
- One body type 89
- Refrigerant circuit 78 89
- Refrigerant flow for each operation mode 89
- Reyq8p 10p 12p cooling operation 89
- Sibe37 704_a refrigerant flow for each operation mode 89
- Thermostat off 89
- Thermostat on 89
- Bs unit 90
- Fan ll 90
- Fan off 90
- Fan on 90
- Heating operation 90
- Heating unit 90
- Indoor unit 90
- Indoor unit operation 90
- One body type 90
- Refrigerant circuit 90
- Refrigerant flow for each operation mode sibe37 704_a 90
- Thermostat off 90
- Thermostat on 90
- Bs unit 91
- Cooling unit 91
- Fan ll 91
- Fan on 91
- Heating unit 91
- Indoor unit 91
- Indoor unit operation 91
- One body type 91
- Refrigerant circuit 80 91
- Sibe37 704_a refrigerant flow for each operation mode 91
- Simultaneous cooling heating operation 91
- Thermostat off 91
- Thermostat on 91
- Bs unit 92
- Cooling oil return operation 92
- Cooling unit 92
- Fan off 92
- Fan on 92
- Indoor unit 92
- Indoor unit operation 92
- One body type 92
- Refrigerant circuit 92
- Refrigerant flow for each operation mode sibe37 704_a 92
- Thermostat off 92
- Thermostat on 92
- Bs unit 93
- Fan ll 93
- Fan off 93
- Fan on 93
- Heating oil return operation 93
- Heating unit 93
- Indoor unit 93
- Indoor unit operation 93
- One body type 93
- Refrigerant circuit 82 93
- Sibe37 704_a refrigerant flow for each operation mode 93
- Thermostat off 93
- Thermostat on 93
- Bs unit 94
- Cooling unit 94
- Fan off 94
- Fan on 94
- Heating unit 94
- Indoor unit 94
- Indoor unit operation 94
- Oil return operation at simultaneous cooling heating operation 94
- One body type 94
- Refrigerant circuit 94
- Refrigerant flow for each operation mode sibe37 704_a 94
- Thermostat on 94
- Bs unit 95
- Cooling unit 95
- Fan ll 95
- Fan off 95
- Fan on 95
- Heating unit 95
- Indoor unit 95
- Indoor unit operation 95
- One body type 95
- Partial defrosting 1 defrosting in the right unit 95
- Refrigerant circuit 84 95
- Sibe37 704_a refrigerant flow for each operation mode 95
- Thermostat on 95
- Bs unit 96
- Cooling unit 96
- Fan ll 96
- Fan off 96
- Fan on 96
- Heating unit 96
- Indoor unit 96
- Indoor unit operation 96
- One body type 96
- Partial defrosting 2 defrosting in the left unit 96
- Refrigerant circuit 96
- Refrigerant flow for each operation mode sibe37 704_a 96
- Thermostat on 96
- Bs unit 97
- Cooling unit 97
- Fan off 97
- Fan on 97
- Indoor unit 97
- Indoor unit operation on 97
- One body type 97
- Refrigerant circuit 86 97
- Reyq14p 16p cooling operation 97
- Sibe37 704_a refrigerant flow for each operation mode 97
- Thermostat off 97
- Thermostat on 97
- Bs unit 98
- Fan ll 98
- Fan off 98
- Fan on 98
- Heating operation 98
- Heating unit 98
- Indoor unit 98
- Indoor unit operation on 98
- One body type 98
- Refrigerant circuit 98
- Refrigerant flow for each operation mode sibe37 704_a 98
- Thermostat off 98
- Thermostat on 98
- Bs unit 99
- Cooling unit 99
- Fan ll 99
- Fan on 99
- Heating unit 99
- Heating unit thermostat off 99
- Indoor unit 99
- Indoor unit operation 99
- One body type 99
- Refrigerant circuit 88 99
- Sibe37 704_a refrigerant flow for each operation mode 99
- Simultaneous cooling heating operation 99
- Thermostat on 99
- Bs unit 100
- Cooling oil return operation 100
- Cooling unit 100
- Fan off 100
- Fan on 100
- Indoor unit 100
- Indoor unit operation 100
- One body type 100
- Refrigerant circuit 100
- Refrigerant flow for each operation mode sibe37 704_a 100
- Thermostat off 100
- Thermostat on 100
- Bs unit 101
- Fan ll 101
- Fan off 101
- Fan on 101
- Heating oil return operation 101
- Heating unit 101
- Indoor unit 101
- Indoor unit operation 101
- One body type 101
- Refrigerant circuit 90 101
- Sibe37 704_a refrigerant flow for each operation mode 101
- Thermostat off 101
- Thermostat on 101
- Bs unit 102
- Cooling unit 102
- Fan off 102
- Fan on 102
- Heating unit 102
- Indoor unit 102
- Indoor unit operation on 102
- Oil return operation at simultaneous cooling heating operation 102
- One body type 102
- Refrigerant circuit 102
- Refrigerant flow for each operation mode sibe37 704_a 102
- Thermostat on 102
- Bs unit 103
- Cooling unit 103
- Fan ll 103
- Fan off 103
- Fan on 103
- Heating unit 103
- High temperature high pressure gas 103
- High temperature high pressure liquid 103
- Indoor unit 103
- Indoor unit operation 103
- Low temperature low pressure 103
- One body type 103
- Partial defrosting 1 defrosting in the right unit 103
- Refrigerant circuit 92 103
- Sibe37 704_a refrigerant flow for each operation mode 103
- Thermostat on 103
- Bs unit 104
- Cooling unit 104
- Fan ll 104
- Fan off 104
- Fan on 104
- Heating unit 104
- Indoor unit 104
- Indoor unit operation on 104
- One body type 104
- Partial defrosting 2 defrosting in the left unit 104
- Refrigerant circuit 104
- Refrigerant flow for each operation mode sibe37 704_a 104
- Thermostat on 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
- Reyq18p 20p cooling operation 105
- Sibe37 704_a refrigerant flow for each operation mode 105
- Heating 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 704_a 106
- Remq10 12p multi 10 12hp 106
- Remq8p multi 8hp 106
- 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 704_a refrigerant flow for each operation mode 107
- Simultaneous cooling heating operation 107
- Cooling oil return operation 108
- High temperature high pressure gas 108
- High temperature high pressure liquid 108
- Low temperature low pressure 108
- Refrigerant circuit 108
- Refrigerant flow for each operation mode sibe37 704_a 108
- Remq10 12p multi 10 12hp 108
- Remq8p multi 8hp 108
- Heating oil return operation 109
- High temperature high pressure gas 109
- High temperature high pressure liquid 109
- Low temperature low pressure 109
- Refrigerant circuit 98 109
- Remq10 12p multi 10 12hp 109
- Remq8p multi 8hp 109
- Sibe37 704_a refrigerant flow for each operation mode 109
- High temperature high pressure gas 110
- High temperature high pressure liquid 110
- Low temperature low pressure 110
- Oil return operation at simultaneous cooling heating operation 110
- Refrigerant circuit 110
- Refrigerant flow for each operation mode sibe37 704_a 110
- Remq10 12p multi 10 12hp 110
- Remq8p multi 8hp 110
- High temperature high pressure gas 111
- High temperature high pressure liquid 111
- Low temperature low pressure 111
- Partial defrosting 1 defrosting in the right unit 111
- Refrigerant circuit 100 111
- Remq10 12p multi 10 12hp 111
- Remq8p multi 8hp 111
- Sibe37 704_a refrigerant flow for each operation mode 111
- High temperature high pressure gas 112
- High temperature high pressure liquid 112
- Low temperature low pressure 112
- Partial defrosting 2 defrosting in the left unit 112
- Refrigerant circuit 112
- Refrigerant flow for each operation mode sibe37 704_a 112
- Remq10 12p multi 10 12hp 112
- Remq8p multi 8hp 112
- Discharge of refrigerant discharge refrigerant from refrigerant regulator by opening of svc when the load of the outdoor unit is large 113
- Operation of refrigerant regulator 113
- 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 113
- Recovery of refrigerant surplus refrigerant is recovered to refrigerant regulator by opening of svl and svg when the indoor unit load is small 113
- Refrigerant circuit 102 113
- Sibe37 704_a refrigerant flow for each operation mode 113
- Cooling unit 114
- Heating unit 114
- In cooling operation 114
- In equalization 114
- Indoor unit bs unit 114
- Pressure equalizing when switching operation cooling heating 114
- Refrigerant circuit 114
- Refrigerant flow for each operation mode sibe37 704_a 114
- To heating operation 114
- When switching operation from to cooling to heating first the electric 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 electric expansion valve of the indoor unit is opened to start the operation as a heating circuit 114
- Cooling unit 115
- Heating unit 115
- In equalization 115
- In heating operation 115
- Indoor unit bs unit 115
- Refrigerant circuit 104 115
- Sibe37 704_a refrigerant flow for each operation mode 115
- To cooling operation 115
- When switching operation from heating to cooling first the electric 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 electric expansion valve of the indoor unit is opened to start the operation as a cooling circuit 115
- Basic control 09 116
- Function general 06 116
- Other control 42 116
- Outline of control indoor unit 43 116
- Part 4 function 116
- Protection control 34 116
- Special control 21 116
- Function general 117
- Symbol 117
- Operation mode 119
- 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 151 120
- Basic control 120
- List of functions in normal operation 120
- Normal operation 120
- Compressor pi control 121
- 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 121
- Cooling operation 121
- Heating operation 121
- 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 121
- Rotation of outdoor units system with two outdoor units 121
- System with three outdoor units 121
- Timing of outdoor rotation in start of startup control 121
- Basic control sibe37 704_a 122
- Function 122
- Operating priority and rotation of compressors 122
- Function 112 123
- 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 123
- Sibe37 704_a basic control 123
- Basic control sibe37 704_a 124
- 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 124
- Function 124
- 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 124
- Operating priority and rotation of compressors 124
- Reyq14py1 16py1 124
- Reyq8py1 10py1 12py1 124
- Single unit installation 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
- Reyq18py1 20py1 8 10 12hp 125
- Reyq22py1 24py1 10 12 12hp 125
- Sibe37 704_a basic control 125
- Two unit multi system 125
- Basic control sibe37 704_a 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
- Reyq 30py1 32py1 14 16 16hp 126
- Reyq26py1 28py1 10 12 16hp 126
- Three unit multi system 126
- Function 116 127
- 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 127
- Reyq34py1 36py1 8 10 12 16hp 127
- Reyq38py1 40py1 10 12 12 16hp 127
- Sibe37 704_a basic control 127
- Basic control sibe37 704_a 128
- Function 128
- 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 128
- Reyq42py1 44py1 10 12 16 16hp 128
- Reyq46py1 48py1 14 16 16 16hp 128
- Electronic expansion valve pi control 129
- 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 129
- 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 129
- 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 129
- 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 129
- 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 129
- Step control of outdoor unit fans 129
- 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 129
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 129
- Outdoor unit fan control in cooling operation 130
- 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 130
- Function 120 131
- Heat exchanger control 131
- Multi outdoor unit system 131
- Sibe37 704_a basic control 131
- Single system 131
- 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 131
- Special control 132
- Startup control 132
- Startup control in cooling operation 132
- 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 132
- Startup control in heating operation 133
- 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 134
- 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 134
- Large capacity start up control heating 134
- Start up std compressors at intervals of 15 seconds 134
- Starting conditions 134
- The system completes defrosting operation 134
- The system starts heating operation with thermostat on at a high load 134
- The system switches the operation mode from cooling to heating or simultaneous cooling and heating operation 134
- 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
- Cooling oil return operation 135
- Oil return operation 135
- 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 135
- 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 135
- 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 137
- Heating oil return operation including cooling heating simultaneous operation 137
- 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 137
- Function 138
- Special control sibe37 704_a 138
- Defrost operation 139
- 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 139
- 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 141
- Pe_min and pc_max indicate the minimum and maximum values in the system respectively 141
- Pump down residual operation 141
- Pump down residual operation in cooling operation 141
- Pe_min and pc_max indicate the minimum and maximum values in the system respectively 142
- Pump down residual operation in heating operation and simultaneous cooling heating operation 142
- Crankcase heater control 143
- 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 143
- Restart standby 143
- Standby 143
- 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 143
- 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 144
- Stop due to malfunction 144
- Stopping operation 144
- This mode is used to define actuator operations when the system stops 144
- When system is in stop mode normal operation stop 144
- High pressure protection control 145
- In cooling operation 145
- Protection control 145
- The following control is performed in the entire system pc_max indicates the maximum value within the system 145
- 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 145
- Heating operation and simultaneous cooling heating operation 146
- The following control is performed in the entire system pc_max indicates the maximum value within the system 146
- Because of common low pressure the following control is performed in the system pe_min indicates the minimum value within the system 147
- In cooling operation 147
- Low pressure protection control 147
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 147
- In heating operation and simultaneous cooling heating operation 148
- The following control is performed in the system pe_min indicates the minimum value within the system 148
- Contents 149
- Discharge pipe protection control 149
- Inv compressor 149
- Std compressor 149
- The following control is performed for each compressor of single unit as well as multi units 149
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 149
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 150
- 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 150
- Inverter overcurrent protection control 150
- Inverter protection control 150
- Perform the following control of integrated as well as multi units for each inv compressor 150
- Inverter fin temperature control 151
- Perform the following control of integrated as well as multi units for each inv compressor 151
- Std compressor overload protection 152
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 152
- 1 emergency operation with remote controller reset operating method reset the remote controller press the run stop 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 153
- 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 244 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 153
- Backup operation 153
- Demand operation 153
- Heating operation is prohibited above 24 c ambient temperature 153
- Heating operation prohibition 153
- 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 153
- 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 153
- Other control 153
- Function 154
- Operation flow chart 154
- Outline of control indoor unit 154
- Outline of control indoor unit sibe37 704_a 154
- Function 144 155
- Sibe37 704_a outline of control indoor unit 155
- Thermostat control 156
- Thermostat sensor in remote controller 156
- A remote controller thermostat sensor is used for temperatures from 28 c to 23 c d 157
- And assuming suction temperature has changed from 28 c to 18 c d 157
- B body thermostat sensor is used for temperatures from 23 c to 18 c b 157
- C remote controller thermostat sensor is used for temperatures from 25 c to 28 c c 157
- 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 body thermostat sensor is used for temperatures from 18 c to 25 c a 157
- Ex when heating assuming the preset temperature in the figure above is 24 c and the suction temperature has changed from 18 c to 28 c a 157
- Function 146 157
- 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 body thermostat sensor only the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset 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 thermostat sensor in remote controller can be used so that suction temperature is higher than the preset temperature 157
- Sibe37 704_a outline of control indoor unit 157
- 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 158
- Function 158
- 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 158
- Outline of control indoor unit sibe37 704_a 158
- Thermostat control in dry operation 158
- Thermostat control while in normal operation 158
- 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 158
- 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 158
- While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 158
- Cooling thermostat on cooling thermostat off 159
- Ex when automatic cooling temperature is set to 27 c 159
- Factory setting 159
- Function 148 159
- Heating thermostat off heating thermostat on 159
- Set cooling temperature a c 159
- Set heating temperature a d c d c 159
- Sibe37 704_a outline of control indoor unit 159
- Thermostat control with operation mode set to auto 159
- 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 204 and later section 159
- 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 160
- Drain pump control 160
- 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 160
- 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 160
- The drain pump is controlled by the on off buttons 4 button 1 4 given in the figure below 160
- When the float switch is tripped while the cooling thermostat is off 160
- When the float switch is tripped while the cooling thermostat is on 160
- 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 4 161
- 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 161
- Function 150 161
- Sibe37 704_a outline of control indoor unit 161
- When the float switch is tripped and af is displayed on the remote controller 161
- When the float switch is tripped during heating operation 161
- Control of electronic expansion valve 162
- 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 163
- Freeze prevention 163
- Freeze prevention by off cycle indoor unit 163
- Function 152 163
- Sibe37 704_a outline of control indoor unit 163
- 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 163
- Heater control optional pcb krp1b is required 164
- 1 l or ll only on fxfq models 165
- List of swing flap operations 165
- Swing flaps operate as shown in table below 165
- 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 166
- Hot start control in heating operation only 166
- Function 156 167
- Louver control for preventing ceiling dirt 167
- P0 p1 p2 p3 p4 167
- Sibe37 704_a outline of control indoor unit 167
- 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 167
- Outdoor unit pcb layout 03 3 field setting 04 168
- Part 5 test operation 168
- Test operation 58 168
- Below figure shows the installation process install in the order of the steps shown 169
- Installation process 169
- Sibe37 704_a test operation 169
- Test operation 169
- Test operation 158 169
- Check work prior to turn power supply on 170
- Follow the following procedure to conduct the initial test operation after installation 170
- Procedure and outline 170
- 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 171
- Correction amount with indoor unit correction amount with a total capacity of indoor units 171
- If the refrigerant charging is still insufficient turn on the power supply following the information on the page 164 171
- 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 171
- Another switch box is provided on the front left side of the unit but it requires no field settings 172
- Be sure to turn the power on 6 hours before starting operation to protect compressors to power on crankcase heater 172
- Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate 172
- Check for erroneous wirings check for failure to open stop valves check for excessive refrigerant refilling automatic judgment of piping length 172
- Check for normal operation 172
- Check the led display of the outdoor unit pcb 172
- Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 172
- Conduct check operations 172
- Inside a switch box a1p pcb 172
- Inside a switch box a1p pcb inside a switch box a1p pcb 172
- Make field settings if needed for the setting procedure refer to information in 3 field setting from outdoor unit on page 220 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 172
- Make field settings with outdoor unit pcb 172
- Test operation 172
- Test operation sibe37 704_a 172
- The check operations shown below will be automatically initiated 172
- The master unit is the outdoor unit to which the transmission wiring for the indoor units is connected the other outdoor units are slave units 172
- Turn outdoor unit and indoor unit power on 172
- Turn power on 172
- Absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop 173
- Air tight test and vacuum drying 173
- Always use nitrogen gas for the air tight test 173
- Gauge manifold charge hose valve 173
- Referring to next figure connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit the refrigerant tank and the charge hose connection to refrigerant charge port or the valve a in next figure are needed in 1 charging refrigerant reyq8 16p8y1 173
- Reyq18 48p8y1 173
- See 1 stop valve operation procedure for details on handling the shutoff valve 173
- Sibe37 704_a test operation 173
- Test operation 162 173
- The air tight test and vacuum drying should be done using the service ports of equalizer pipe hp lp gas pipe suction gas pipe and liquid pipe shutoff valve see the r 410a label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right 173
- The refrigerant charge port is connected to unit pipe when shipped the unit contains the refrigerant so use caution when attaching the charge hose 173
- To prevent entry of any impurities and insure sufficient pressure resistance always use the special tools dedicated for r 410a use charge hose that have pushing stick for connecting to service port of shutoff valves or refrigerant charge port 173
- Vacuum pump the vacuum pump for vacuum drying should be able to lower the pressure to 100 kpa 5 torr 755mm hg take care the pump oil never flow backward into the refrigerant pipe during the pump stops 173
- Pipe insulation 174
- Charging refrigerant reyq8 16p8y1b 175
- Important information regarding the refrigerant used 175
- Precautions when adding r 410a 176
- Stop valve operation procedure 176
- H h k h h h h 177
- How to check how many units are connected 177
- L h h h h h h 177
- L h h h k h k 177
- L h l h l l h 177
- Additional refrigerant charge 178
- H l h h h h k 181
- H l h h h k h 181
- H l h h h k k 181
- L l l h k h k 181
- L l l k k k k 181
- K l l k k k k 182
- L h h k h h h h 182
- L l l k k k k 182
- 3 press the bs2 set button 14 times the led display must be as follows 183
- Availability of the leak detection function feature requires input of the additional refrigerant charge amount immediately after finishing the automatic charging the input must be executed before performing the test operation 183
- If a wrong value is input for the additional charged refrigerant weight the accuracy of the leak detection function will decrease 183
- K h h k k k h 183
- Press the bs3 return button once as confirmation of the leds combination leds will be blinking in function of the last entered setting factory setting 0 kg 4 the weighed and already recorded amount of additional refrigerant charge not the total amount of refrigerant present in the system must be entered by selecting the corresponding led display scroll through the possible led combinations by pressing the bs2 set button until the led combination corresponds to the weight of additional refrigerant charge you must input select the required input by pressing the bs3 return button and confirm the input into the pcb by pressing the bs3 return button again 183
- Procedure 1 close the electric box lid and all front panels except the one on the side of the electric box 2 press and hold the bs1 mode button for 5 seconds to enter into setting mode 2 the h1p led is on 183
- Procedure for inputting the additional refrigerant charge weight into the pcb 183
- Remote controller cooling mode malfunction codes 183
- Remote controller heating mode malfunction codes 183
- Remote controller malfunction code display 183
- Before operation 185
- Service precautions 185
- Checks before initial start up 186
- Field setting 186
- Blinking 187
- Check operation procedure 187
- L h h k h h h h 187
- Led state throughout the manual the state of the leds is indicated as follows 187
- Location of the dip switches leds and buttons 187
- Setting the push button switch bs1 5 function of the push button switch which is located on the outdoor unit pcb a1p 187
- The figure shows state of the led indications when the unit is shipped from the factory 187
- 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 187
- K h h h h h l 190
- K h h h h k k 190
- K h h h h l h 190
- Test operation 190
- Confirm the malfunction code on the remote controller 191
- Correcting after abnormal completion of the test operation the test operation is only completed if there is no malfunction code displayed on the remote controller in case of a displayed malfunction code perform the following actions to correct the abnormality 191
- During the test operation it is not possible to stop the unit operation from a remote controller to abort the operation press the bs3 return button the unit will stop after 30 seconds 6 close the front panel in order to let it not be the cause of misjudgement 7 check the test operation results by the led display on the outdoor unit 191
- During the test operation the refrigerant running sound or the magnetic sound of a solenoid valve may become loud and the led display may change but these are not malfunctions 191
- E3 e4 f3 f6 uf 191
- E3 f6 uf 191
- H h k h h h h 191
- H k k h h h h 191
- It may take 10 minutes to bring the state of the refrigerant uniform before the compressor starts 191
- Lc u1 u4 191
- Press the bs3 return button a second time to start the test operation the unit will start the test operation 191
- The test operation is automatically carried out in cooling mode the h2p led will light up and the messages test operation and under centralized control will display on the remote controller 191
- When the test operation is fully completed normal operation will be possible after 5 minutes otherwise refer to correcting after abnormal completion of the test operation on page 180 to take actions for correcting the abnormality 191
- Final check after installation 192
- Service mode operation 192
- Additional refrigerant charging method 193
- Charging refrigerant remq8 16p8y1b 194
- Important information regarding the refrigerant used 194
- Precautions when adding r 410a 194
- A the 12 hp model supports field piping of 195
- After tightening the cap check that no refrigerant leaks are present 195
- Always use a charge hose for service port connection 195
- C the 14 and 16 hp models support field piping of 195
- Closing stop valve see figure 13 1 remove the cap and turn the valve clockwise with the hexagon wrench 2 securely tighten the valve until the shaft contacts the main body seal 3 make sure to tighten the cap securely for the tightening torque refer to the table above 195
- Do not apply excessive force to the stop valve doing so may break the valve body 195
- Do not open the stop valve until all piping and electrical steps of 1 pipe insulation on page 163 are completed if the stop valve is left open without turning on the power it may cause refrigerant to build up in the compressor leading to insulation degradation 195
- Make sure to tighten the cap securely refer to the table below 195
- On the accessory pipe supplied with the unit 195
- On the accessory pipe supplied with the unit b the 8 and 10 hp models support field piping of 195
- Opening stop valve see figure 13 195
- Remove the cap and turn the valve counterclockwise with the hexagon wrench 2 turn it until the shaft stops 195
- Size of stop valve the sizes of the stop valves connected to the system are as listed in the table below 195
- Stop valve operation procedure 195
- The 12 16 hp models support field piping of 195
- H h k h h h h 196
- How to check how many units are connected 196
- L h h h h h h 196
- L h h h k h k 196
- L h h k h h h 196
- L h l h l l h 196
- Additional refrigerant charge 197
- After pre charging perform the refrigerant charge operation as shown below and charge the remaining refrigerant of the additional charging amount through valve a see figure 24 198
- At least the unit should be charged with its original amount of refrigerant refer to the nameplate on the unit before starting the automatic charging 198
- If the calculated amount of pre charging is reached close valve b 198
- If you perform the refrigerant charging operation within the refrigerant system with one or more units with power off the refrigerant charging operation can not be accomplished properly for confirming the number of outdoor units and indoor units with power on refer to 1 how to check how many units are connected on page 185 in case of a multi system turn the power on to all outdoor units in the refrigerant system 198
- Note for a multi outdoor unit system it is not required to connect all charge ports to a refrigerant tank the refrigerant will be charged with 30 kg in 1 hour time at an outdoor temperature of 30 c db or with 12 kg at an outdoor temperature of 0 c db if you need to speed up in case of a multiple outdoor system connect the refrigerant tanks to each outdoor unit as shown in figure 24 198
- Note when the leak detection function is not required complete charging when using the previous described method unit is not operating can be done if it is not possible to charge the entire quantity through the service port of the liquid pipe stop valve with the unit not operating refer to 1 additional refrigerant charging method on page 201 198
- Open valve b the valves a and c the liquid pipe the suction gas pipe the high pressure low pressure gas pipe and the equalizer pipe stop valves must be left closed and charge the refrigerant in liquid form via the liquid pipe stop valve service port see figure 24 198
- Start of automatic charging refrigerant open the liquid pipe suction gas pipe high pressure low pressure gas pipe and equalizer pipe stop valves and the service port stop valve valves a b and c must be closed close all front panels except the electric box front panel and turn the power on make sure all indoor units are connected refer to 1 how to check how many units are connected on page 185 if the h2p led is not flashing in 12 minutes time after turning on the power make sure it is displayed as shown in the 2 normal system display on page 190 if the h2p led is flashing check the malfunction code on the remote controller 3 remote controller malfunction code display on page 191 198
- Test operation 198
- Test operation sibe37 704_a 198
- H l h h h h k 200
- H l h h h k h 200
- H l h h h k k 200
- L l l h k h k 200
- L l l k k k k 200
- K h h k k k h 202
- Pa ph pc 202
- Procedure for inputting the additional refrigerant charge weight into the pcb 202
- Before operation 204
- Service precautions 204
- Checks before initial start up 205
- Field setting 205
- A the state of the h8p multi led in a multi system shows which unit is the master unit 206
- Blinking 206
- Check operation procedure 206
- L h h h h h h h h 206
- L h h h h h h h l 206
- L h h k h h h h h 206
- L h h k h h h h k 206
- Led state throughout the manual the state of the leds is indicated as follows 206
- Location of the dip switches leds and buttons 206
- Only the master unit is connected to the indoor units with interunit wiring 206
- Or slave 2 unit 206
- Setting the push button switch bs1 5 function of the push button switch which is located on the outdoor unit pcb a1p 206
- Slave 1 unit 206
- The figure shows state of the led indications when the unit is shipped from the factory 206
- 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 206
- K h h h h h l 209
- K h h h h k k 209
- K h h h h l h 209
- Test operation 209
- Confirm the malfunction code on the remote controller 210
- During the test operation it is not possible to stop the unit operation from a remote controller to abort the operation press the bs3 return button the unit will stop after 30 seconds 6 close the front panel in order to let it not be the cause of misjudgement 7 check the test operation results by the led display on the outdoor unit 210
- During the test operation the refrigerant running sound or the magnetic sound of a solenoid valve may become loud and the led display may change but these are not malfunctions 210
- E3 e4 f3 f6 uf 210
- E3 f6 uf 210
- H h k h h h h 210
- H k k h h h h 210
- It may take 10 minutes to bring the state of the refrigerant uniform before the compressor starts 210
- Lc u1 u4 210
- Press the bs3 return button a second time to start the test operation the unit will start the test operation 210
- The test operation is automatically carried out in cooling mode the h2p led will light up and the messages test operation and under centralized control will display on the remote controller 210
- When the test operation is fully completed normal operation will be possible after 5 minutes otherwise refer to correcting after abnormal completion of the test operation on page 199 to take actions for correcting the abnormality correcting after abnormal completion of the test operation the test operation is only completed if there is no malfunction code displayed on the remote controller in case of a displayed malfunction code perform the following actions to correct the abnormality 210
- Final check after installation 211
- Service mode operation 211
- Additional refrigerant charging method 212
- 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 213
- 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 213
- Operation when power is turned on 213
- 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 213
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 213
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pcb has been changed 213
- When turning on power first time 213
- When turning on power the second time and subsequent 213
- Outdoor unit pcb 214
- Outdoor unit pcb layout 214
- Field setting 215
- Field setting from remote controller 215
- Caution 216
- Wireless remote controller indoor unit 217
- 7 4 5 6 2 8 218
- Simplified remote controller 218
- 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 219
- Setting contents and code no vrv indoor unit 219
- Sibe37 704_a field setting 219
- Test operation 208 219
- Applicable range of field setting 220
- Field setting sibe37 704_a 220
- Static pressure selection 220
- Test operation 220
- 1 filter sign setting if switching the filter sign on time set as given in the table below set time 221
- 2 ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 221
- 3 selection of thermistor select the thermistor to control room temperature 221
- 4 filter cleaning displayed or not displayed whether or not to display filter cleaning after operation of certain duration can be selected 221
- Detailed explanation of setting modes 221
- Setting table 221
- The factory setting for the second code no is 01 and room temperature is controlled by the indoor unit suction air thermistor and remote controller thermistor 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 remote controller thermistor 221
- 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 222
- 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 222
- 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 222
- 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 page 147 222
- F2 t1 t2 222
- Setting table 222
- 10 setting of operation mode to auto this setting makes it possible to change differential values for mode selection while in automatic operation mode 223
- 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 223
- 12 airflow when cooling thermostat is off this is used to set airflow to ll airflow when cooling thermostat is off 223
- 9 airflow setting when heating thermostat is off this setting is used to set airflow when heating thermostat is off 223
- 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 223
- 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 223
- The automatic operation mode setting is made by the use of the operation mode selector button 223
- 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 223
- 13 setting of normal airflow make the following setting according to the ceiling height the setting position no is set to 01 at the factory 224
- 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 01 224
- 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 224
- In the case of fxaq fxhq 224
- In the case of fxfq100 125 224
- In the case of fxfq25 80 224
- In the case of fxuq71 125 224
- Setting table 224
- 16 setting of airflow direction adjustment range make the following airflow direction setting according to the respective purpose 225
- 17 setting of the static pressure selection for fxdq model 225
- 18 external static pressure settings for fxmq p model 225
- 19 humidification when heating thermostat is off setting to humidification setting turns on the humidifier if suction temperature is 20ºc or above and turns off the humidifier if suction temperature is 18ºc or below when the heating thermostat is off 225
- Setting table 225
- Some indoor unit models are not equipped with draft prevention upward function 225
- 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 225
- 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 226
- 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 226
- 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 226
- Brc1e type in order to conduct the central remote control using the central 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 central remote control using the operating remote controller 227
- Centralized control group no setting 227
- For setting group no of hrv and wiring adaptor for other air conditioners etc refer to the instruction manual attached 227
- For wireless remote controller see the following 227
- 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 227
- Contents of control modes 229
- Setting of operation control mode from remote controller local setting 229
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 230
- Factory setting 230
- 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 230
- Field setting from outdoor unit 231
- 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 237 onward 231
- For setting items of 1 refer to detailed information provided on page 228 onward 232
- 1 factory setting of initial pcb do not make any changes in all factory settings of the dip switches on the control pcb 233
- Caution 233
- Dip switch detail 233
- 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 233
- 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 233
- 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 233
- Setting at replacement by spare pcb 233
- Setting by dip switches 233
- Detail of ds1 1 4 ds2 1 4 setting 234
- Field setting sibe37 704_a 234
- Test operation 234
- Sibe37 704_a field setting 235
- Test operation 224 235
- Allocation application model setting method represents the position of switches 236
- Field setting sibe37 704_a 236
- For europe 236
- Heat recovery 10hp remq10p8y1b 236
- Heat recovery 12hp remq12p8y1b 236
- Heat recovery 14hp remq14p8y1b 236
- Heat recovery 16hp remq16p8y1b 236
- Heat recovery 8hp remq8p8y1b 236
- Multiple type 236
- Set ds1 4 and ds2 4 to on 236
- Set ds1 4 ds2 2 and ds2 3 to on 236
- Set ds1 4 ds2 2 and ds2 4 to on 236
- Set ds1 4 ds2 2 ds2 3 and ds2 4 to on 236
- Set ds1 4 ds2 3 and ds2 4 to on 236
- Test operation 236
- Factory setting 237
- H h h h h h h h 237
- H h h h h h h l 237
- H h k h h h h h 237
- H h k h h h h k 237
- Mode changing procedure 1 237
- Monitor mode h1p blinks used to check the program made in setting mode 2 237
- Setting by push button switches 237
- 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 237
- Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 237
- 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 237
- There are the following three setting modes 237
- Field setting sibe37 704_a 238
- Mode changing procedure 2 238
- Test operation 238
- A setting mode 1 239
- Sibe37 704_a field setting 239
- Test operation 228 239
- 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 239
- B setting mode 2 240
- Bs5 rewiring 241
- The numbers in the no column represent the number of times to press the set bs2 button 241
- Cool heat mode switching 246
- Example of connecting transmission wiring connect the transmission wirings as shown in the fig 1 246
- Example of transmission line connection 246
- F1 f2 f1 f2 246
- Field setting sibe37 704_a 246
- Set cool heat separately for each bs unit by cool heat selector 246
- Set remote controller change over switch ss1 ss2 as following 246
- Test operation 246
- When using cool heat selector connect to the terminal a b and c on the ec of the electric parts box 246
- When using cool heat selector turn this switch to the bs side 246
- Setting of low noise operation and demand operation 247
- Field setting sibe37 704_a 248
- Image of operation in the case of a 248
- Image of operation in the case of a and b 248
- Image of operation in the case of b 248
- Test operation 248
- 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 249
- 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 249
- 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 249
- Field setting sibe37 704_a 250
- Image of operation in the case of a 250
- Image of operation in the case of a and b 250
- Image of operation in the case of b 250
- Test operation 250
- Setting of refrigerant recovery mode 253
- Check operation detail 254
- Check operation function 254
- H h k h h h h 254
- H l h h h h k 254
- H l h h h k h 254
- H l h h h k k 254
- H l h h k h h 254
- H l h h k h k 254
- H l h h k k h 254
- H l h k h h k 254
- H l h k h k h 254
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 254
- Operating procedure 254
- Press mode button bs1 once and reset setting mode 2 254
- Setting of vacuuming mode 254
- Use the vacuum pump to perform vacuuming operation 254
- 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 254
- Emergency operation 255
- Disabling the compressor 2 on the left side from operating set no 39 of setting mode 2 to disable compressor 2 operation 256
- Disabling the outdoor unit 1 to operate set no 38 of setting mode 2 to disable outdoor unit 1 operation 256
- Disabling the outdoor unit 2 from operating set no 39 of setting mode 2 to disable outdoor unit 2 operation 256
- Disabling the outdoor unit 3 from operating set no 40 of setting mode 2 to disable outdoor unit 1 operation 256
- Field setting sibe37 704_a 256
- H h h h h h h 256
- H h h h h h h l 256
- H h k h h h h 256
- H h k h h h h k 256
- K h h h h h 256
- K h h h h h h 256
- K h h h h l h 256
- K k h h k k h 256
- K k h h k k k 256
- K k h k h h h 256
- 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 256
- Test operation 256
- Cancel disabling the compressor 1 on the right side from operating set no 38 disable compressor 1 operation of setting mode 2 to off 257
- Cancel disabling the compressor 2 on the left side from operating set no 39 disable compressor 2 operation of setting mode 2 to off 257
- Cancel disabling the outdoor unit 1 from operating set no 38 disable outdoor unit 1 operation of setting mode 2 to off 257
- Cancel of emergency operation to cancel the emergency operation conduct the following setting return to factory setting 257
- 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 257
- H h h h h h h 257
- H h h h h h h l 257
- H h k h h h h 257
- H h k h h h h k 257
- K h h h h h 257
- K h h h h h h 257
- K h h h h l h 257
- K k h h k k h 257
- K k h h k k k 257
- Sibe37 704_a field setting 257
- Test operation 246 257
- Cancel disabling the outdoor unit 2 from operating set no 39 disable outdoor unit 2 operation of setting mode 2 to off 258
- Cancel disabling the outdoor unit 3 from operating set no 40 disable outdoor unit 3 operation of setting mode 2 to off 258
- Field setting sibe37 704_a 258
- H h k h h h h 258
- K h h h h h 258
- K h h h h h h 258
- K h h h h l h 258
- K k h h k k k 258
- K k h k h h h 258
- Test operation 258
- Prevention of micro heating in non operating unit 259
- Reduction of cooling heating selection time of bs units 259
- Part 6 troubleshooting 261
- Symptom based troubleshooting 53 2 troubleshooting by remote controller 56 261
- Troubleshooting by indication on the remote controller 73 261
- Troubleshooting op centralized remote controller 85 263
- Troubleshooting op unified on off controller 90 263
- Symptom based troubleshooting 264
- 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 267
- Sibe37 704_a troubleshooting by remote controller 267
- The following modes can be selected by using the inspection test operation button on the remote control 267
- The inspection test button 267
- Troubleshooting 256 267
- Troubleshooting by remote controller 267
- 1 checking a malfunction or warning 268
- 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 268
- Self diagnosis by wired remote controller 268
- Self diagnosis by wireless remote controller 269
- Advance button backward button 270
- The lower digit of the code changes as shown below when the up and down buttons are pressed 270
- Sibe37 704_a troubleshooting by remote controller 271
- Troubleshooting 260 271
- 1 f c j 272
- Inspection mode 272
- 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 272
- Remote controller service mode 273
- Remote controller self diagnosis function 276
- Test run mode 276
- 1 checking a malfunction or warning 277
- 2 taking corrective action 277
- Press the menu enter button to check the malfunction code 277
- Take the corrective action specific to the model 277
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 279
- Detail description on next page 280
- Malfunction code indication by outdoor unit pcb 280
- Push the mode bs1 button and returns to setting mode 1 280
- Push the return bs3 button and switches to the initial status of monitor mode 280
- Push the return bs3 button once to display first digit of malfunction code 280
- Push the set bs2 button and set the led display to a setting item 280
- Push the set bs2 button once to display malfunction location 280
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 280
- Push the set bs2 button once to display second digit of malfunction code 280
- Refer to page 233 for monitor mode 280
- To enter the monitor mode push the mode bs1 button when in setting mode 1 280
- Troubleshooting 280
- Troubleshooting by remote controller sibe37 704_a 280
- Sibe37 704_a troubleshooting by remote controller 281
- Troubleshooting 270 281
- Detail description on next page 282
- Malfunction code indication by outdoor unit pcb 282
- Push the mode bs1 button and returns to setting mode 1 282
- Push the return bs3 button and switches to the initial status of monitor mode 282
- Push the return bs3 button once to display first digit of malfunction code 282
- Push the set bs2 button and set the led display to a setting item 282
- Push the set bs2 button once to display malfunction location 282
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 282
- Push the set bs2 button once to display second digit of malfunction code 282
- Refer to page 233 for monitor mode 282
- To enter the monitor mode push the mode bs1 button when in setting mode 1 282
- Troubleshooting 282
- Troubleshooting by remote controller sibe37 704_a 282
- Sibe37 704_a troubleshooting by remote controller 283
- Troubleshooting 272 283
- Indoor unit error of external protection device 284
- Troubleshooting by indication on the remote controller 284
- Indoor unit pcb defect 285
- Indoor unit malfunction of drain level control system s1l 286
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 287
- Sibe37 704_a troubleshooting by indication on the remote controller 287
- Troubleshooting 287
- Troubleshooting 276 287
- Indoor unit fan motor m1f lock overload 288
- 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 289
- Are there any foreign matters around the fan 289
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 289
- Properly connect the connector 289
- Remove the foreign matters 289
- Replace the fan motor 289
- Replace the indoor unit pcb 289
- Sibe37 704_a troubleshooting by indication on the remote controller 289
- Troubleshooting 289
- Troubleshooting 278 289
- Turn off the power supply and then wait for a period of 10 minutes 289
- Indoor unit malfunction of indoor unit fan motor 290
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 292
- Troubleshooting 292
- Troubleshooting by indication on the remote controller sibe37 704_a 292
- Sibe37 704_a troubleshooting by indication on the remote controller 293
- Troubleshooting 282 293
- Indoor unit malfunction of swing flap motor m1s 294
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 295
- Sibe37 704_a troubleshooting by indication on the remote controller 295
- Troubleshooting 295
- Troubleshooting 284 295
- Abnormal power supply voltage 296
- Applicable models fxmq20 140p 296
- Connection defect on signal line 296
- Detect malfunction checking the input voltage of fan motor 296
- Instantaneous blackout others 296
- Malfunction decision conditions 296
- Method of malfunction detection 296
- Power supply voltage malfunction 296
- Remote controller display 296
- Supposed causes the possible causes are 296
- Troubleshooting 296
- When the input voltage of fan motor is 150v and below or 386v and above 296
- Wiring defect 296
- Electronic expansion valve malfunction dust clogging 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 704_a 298
- Indoor unit malfunction of electronic expansion valve coil 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 704_a 300
- Indoor unit drain level above limit 301
- Indoor unit malfunction of capacity determination device 302
- Indoor unit failure of transmission between indoor unit pcb and fan pcb 303
- After confirmation turn off the power take off the short circuit and connect x70a back to original condition 304
- Determination 01 normal other than 01 transmission defect on indoor pcb 304
- 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 setting position no at the condition of setting switch no 21 on mode no 41 304
- Pull out and insert the connecter once and check it is absolutely connected 304
- Troubleshooting 304
- Indoor unit malfunction of thermistor r2t for heat exchanger 305
- Indoor unit malfunction of thermistor r3t for gas pipes 306
- Indoor unit failure of combination between indoor unit pcb and fan pcb 307
- Indoor unit malfunction of thermistor r1t for suction air 308
- Indoor unit malfunction of thermostat sensor in remote controller 309
- Outdoor unit pcb defect 310
- Outdoor unit actuation of high pressure switch 311
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 312
- Troubleshooting 312
- Troubleshooting by indication on the remote controller sibe37 704_a 312
- Outdoor unit actuation of low pressure sensor 313
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 314
- Troubleshooting 314
- Troubleshooting by indication on the remote controller sibe37 704_a 314
- Outdoor unit inverter compressor motor lock 315
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 316
- Troubleshooting 316
- Troubleshooting by indication on the remote controller sibe37 704_a 316
- Abnormal case 317
- Applicable models reyq8p 48p 317
- Closed stop value 317
- Detects the overcurrent with current sensor ct 317
- Faulty compressor 317
- Faulty current sensor a6p a8p 317
- Faulty magnetic switch 317
- Improper power voltage 317
- Malfunction decision conditions 317
- Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 317
- Method of malfunction detection 317
- Obstacles at the air outlet 317
- One of the possible factors may be chattering due to rough mgs contact 317
- Outdoor unit std compressor motor overcurrent lock 317
- Remote controller display 317
- Supposed causes 317
- The current sensor value is 0 during std compressor operation 317
- The current sensor value is more than 15 a during std compressor stop 317
- Troubleshooting 317
- V unit 15 a 317
- Outdoor unit malfunction of outdoor unit fan motor 318
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 319
- Sibe37 704_a troubleshooting by indication on the remote controller 319
- Troubleshooting 319
- Troubleshooting 308 319
- Troubleshooting 320
- Troubleshooting by indication on the remote controller sibe37 704_a 320
- Outdoor unit malfunction of moving part of electronic expansion valve y1e y5e 321
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 322
- Troubleshooting 322
- Troubleshooting by indication on the remote controller sibe37 704_a 322
- Outdoor unit abnormal discharge pipe temperature 323
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 324
- Refer to thermistor resistance temperature characteristics table on p468 324
- Troubleshooting 324
- Troubleshooting by indication on the remote controller sibe37 704_a 324
- Outdoor unit refrigerant overcharged 325
- Outdoor unit malfunction of bs unit electronic expansion valve 326
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 327
- Sibe37 704_a troubleshooting by indication on the remote controller 327
- Troubleshooting 327
- Troubleshooting 316 327
- Outdoor unit abnormal outdoor fan motor signal 328
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 329
- Sibe37 704_a troubleshooting by indication on the remote controller 329
- Troubleshooting 329
- Troubleshooting 318 329
- Outdoor unit malfunction of thermistor r1t for outdoor air 330
- Applicable models reyq8p 48p 331
- Defective compressor 331
- Faulty current sensor a6p a8p 331
- Faulty outdoor unit pcb 331
- Malfunction decision conditions 331
- Malfunction is detected according to the current value detected by current sensor 331
- Method of malfunction detection 331
- Outdoor unit current sensor malfunction 331
- Remote controller display 331
- Supposed causes 331
- Troubleshooting 331
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 331
- Outdoor unit malfunction of discharge pipe thermistor r31t r32t r33t 332
- Outdoor unit malfunction of temperature sensor for heat exchanger gas r2t or r11t 333
- Outdoor unit malfunction of thermistor r8t or r10t for suction pipe 334
- Outdoor unit malfunction of thermistor r4t or r12t for outdoor unit heat exchanger 335
- Outdoor unit malfunction of liquid pipe thermistor 1 r6t r9t or r14t 336
- Outdoor unit malfunction of liquid pipe thermistor 2 r7t or r15t 337
- Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t or r13t 338
- Outdoor unit malfunction of high pressure sensor 339
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 340
- Malfunction code pressure sensor subject to malfunction code electric symbol ja high pressure sensor s1nph 340
- Pressure sensor subject to malfunction code 340
- Refer to pressure sensor pressure voltage characteristics table on p470 340
- Troubleshooting 340
- Troubleshooting by indication on the remote controller sibe37 704_a 340
- Voltage measurement point 340
- Outdoor unit malfunction of low pressure sensor 341
- Refer to pressure sensor pressure voltage characteristics table on p470 342
- Troubleshooting 342
- Troubleshooting by indication on the remote controller sibe37 704_a 342
- Voltage measurement point 342
- Outdoor unit malfunction of inverter pcb 343
- 1 list of inverter pcbs 344
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 344
- Troubleshooting 344
- Troubleshooting by indication on the remote controller sibe37 704_a 344
- Outdoor unit malfunction of inverter radiating fin temperature rise 345
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 346
- Troubleshooting 346
- Troubleshooting by indication on the remote controller sibe37 704_a 346
- Inverter pcb for compressor 347
- Refer to thermistor resistance temperature characteristics table on p468 347
- Outdoor unit momentary overcurrent of inverter compressor 348
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 349
- Sibe37 704_a troubleshooting by indication on the remote controller 349
- Troubleshooting 338 349
- Troubleshooting compressor inspection 349
- Outdoor unit momentary overcurrent of inverter compressor 350
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 351
- Sibe37 704_a troubleshooting by indication on the remote controller 351
- Troubleshooting 340 351
- Troubleshooting output current check 351
- Outdoor unit inverter compressor starting failure 352
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 353
- Sibe37 704_a troubleshooting by indication on the remote controller 353
- Troubleshooting 353
- Troubleshooting 342 353
- Troubleshooting 354
- Troubleshooting by indication on the remote controller sibe37 704_a 354
- Outdoor unit malfunction of transmission between inverter and control pcb 355
- 1 list of inverter pcbs 356
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 356
- Troubleshooting 356
- Troubleshooting by indication on the remote controller sibe37 704_a 356
- Sibe37 704_a troubleshooting by indication on the remote controller 357
- Troubleshooting 357
- Troubleshooting 346 357
- Outdoor unit inverter over ripple protection 358
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 359
- Sibe37 704_a troubleshooting by indication on the remote controller 359
- Troubleshooting 359
- Troubleshooting 348 359
- Applicable models reyq8p 48p 360
- Defect of inverter pcb 360
- Defect of radiator fin temperature sensor 360
- Faulty fan motor 360
- Faulty inverter compressor 360
- Malfunction decision conditions 360
- Malfunction is not decided while the unit operation is continued 360
- Method of malfunction detection 360
- Outdoor unit malfunction of inverter radiating fin temperature rise sensor 360
- Remote controller display 360
- Resistance of radiation fin thermistor is detected when the compressor is not operating 360
- Supposed causes 360
- Troubleshooting 360
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 360
- Will be displayed by pressing the inspection button 360
- Inverter pcb for compressor 361
- Refer to thermistor resistance temperature characteristics table on p468 361
- Outdoor unit faulty field setting after replacing main pcb or faulty combination of pcb 362
- 1 list of inverter pcbs 363
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 363
- Sibe37 704_a troubleshooting by indication on the remote controller 363
- Troubleshooting 363
- Troubleshooting 352 363
- Outdoor unit gas shortage alert 364
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 365
- Sibe37 704_a troubleshooting by indication on the remote controller 365
- Troubleshooting 365
- Troubleshooting 354 365
- Applicable models reyq8p 48p 366
- Defect of outdoor pcb a1p 366
- Malfunction decision conditions 366
- Method of malfunction detection 366
- Power supply open phase 366
- Power supply reverse phase 366
- Remote controller display 366
- Reverse phase open phase 366
- Supposed causes 366
- The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 366
- Troubleshooting 366
- When a significant phase difference is made between phases 366
- Outdoor unit power supply insufficient or instantaneous failure 367
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 368
- Troubleshooting 368
- Troubleshooting by indication on the remote controller sibe37 704_a 368
- Sibe37 704_a troubleshooting by indication on the remote controller 369
- Troubleshooting 369
- Troubleshooting 358 369
- Applicable models reyq8p 48p 370
- Check operation is executed or not 370
- Check operation is not executed 370
- Malfunction decision conditions 370
- Malfunction is decided when the unit starts operation without check operation 370
- Method of malfunction detection 370
- Outdoor unit check operation not executed 370
- Remote controller display 370
- Supposed causes 370
- Troubleshooting 370
- Malfunction of transmission between indoor units and outdoor units 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 704_a 372
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 373
- Sibe37 704_a troubleshooting by indication on the remote controller 373
- Troubleshooting 373
- Troubleshooting 362 373
- Applicable models all indoor unit models 374
- Connection of two main remote controllers when using 2 remote controllers 374
- Defect of indoor unit pcb 374
- Defect of remote controller pcb 374
- 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 374
- Indoor unit malfunction of transmission between remote controller and indoor unit 374
- Malfunction decision conditions 374
- Malfunction of indoor unit remote controller transmission 374
- Malfunction of transmission caused by noise 374
- Method of malfunction detection 374
- Normal transmission does not continue for specified period 374
- Remote controller display 374
- Supposed causes 374
- Troubleshooting 374
- Outdoor unit transmission failure across outdoor units 375
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 376
- Troubleshooting 376
- Troubleshooting by indication on the remote controller sibe37 704_a 376
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 377
- Sibe37 704_a troubleshooting by indication on the remote controller 377
- Troubleshooting 377
- Troubleshooting 366 377
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 378
- Troubleshooting 378
- Troubleshooting by indication on the remote controller sibe37 704_a 378
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 379
- Sibe37 704_a troubleshooting by indication on the remote controller 379
- Troubleshooting 379
- Troubleshooting 368 379
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 380
- Troubleshooting 380
- Troubleshooting by indication on the remote controller sibe37 704_a 380
- Applicable models all indoor unit models 381
- Connection between sub remote controllers 381
- Defect of remote controller pcb 381
- 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 381
- Indoor unit malfunction of transmission between main and sub remote controllers 381
- Malfunction decision conditions 381
- Malfunction of transmission between main and sub remote controller 381
- Method of malfunction detection 381
- Normal transmission does not continue for specified period 381
- Remote controller display 381
- Supposed causes 381
- Troubleshooting 381
- Applicable models all indoor unit models reyq8p 48p 382
- Defect of pcb of indoor unit in other system 382
- Detect malfunction signal for the other indoor units within the circuit by outdoor unit pcb 382
- Improper connection of transmission wiring between indoor and outdoor unit 382
- Indoor unit malfunction of transmission between indoor and outdoor units in the same system 382
- Malfunction decision conditions 382
- Malfunction of electronic expansion valve in indoor unit of other system 382
- Malfunction of transmission within or outside of other system 382
- Method of malfunction detection 382
- Remote controller display 382
- Supposed causes 382
- Troubleshooting 382
- When the malfunction decision is made on any other indoor unit within the system concerned 382
- Improper combination of indoor and outdoor units indoor units and remote controller 383
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 384
- Troubleshooting 384
- Troubleshooting by indication on the remote controller sibe37 704_a 384
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 385
- Sibe37 704_a troubleshooting by indication on the remote controller 385
- Troubleshooting 385
- Troubleshooting 374 385
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 386
- Troubleshooting 386
- Troubleshooting by indication on the remote controller sibe37 704_a 386
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 387
- Sibe37 704_a troubleshooting by indication on the remote controller 387
- Troubleshooting 387
- Troubleshooting 376 387
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 388
- Troubleshooting 388
- Troubleshooting by indication on the remote controller sibe37 704_a 388
- Address duplication of centralized controller 389
- Malfunction of transmission between centralized controller and indoor unit 390
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 391
- Sibe37 704_a troubleshooting by indication on the remote controller 391
- Troubleshooting 391
- Troubleshooting 380 391
- Troubleshooting 392
- Troubleshooting by indication on the remote controller sibe37 704_a 392
- System is not set yet 393
- Malfunction of system refrigerant system address undefined 394
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 395
- Sibe37 704_a troubleshooting by indication on the remote controller 395
- Troubleshooting 395
- Troubleshooting 384 395
- Pcb defect 396
- Troubleshooting op centralized remote controller 396
- Applicable models centralized remote controller intelligent touch controller schedule timer 397
- Defect of pcb of optional controllers for centralized control 397
- Detect the malfunction according to diii net transmission data the system will be automatically reset 397
- Malfunction decision conditions 397
- Malfunction of transmission between optional controllers for centralized control 397
- Method of malfunction detection 397
- Remote controller display 397
- Supposed causes 397
- Troubleshooting 397
- 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 397
- Improper combination of optional controllers for centralized control 398
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 399
- Sibe37 704_a troubleshooting op centralized remote controller 399
- Troubleshooting 399
- Troubleshooting 388 399
- Address duplication improper setting 400
- Address duplication of centralized controller 400
- Applicable models centralized remote controller intelligent touch controller schedule timer 400
- Detect the malfunction according to diii net transmission data 400
- Malfunction decision conditions 400
- Method of malfunction detection 400
- Remote controller display 400
- Supposed causes 400
- Troubleshooting 400
- 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 400
- Two units of schedule timers are connected 400
- Operation lamp blinks 401
- Troubleshooting op unified on off controller 401
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 402
- Troubleshooting 402
- Troubleshooting op unified on off controller sibe37 704_a 402
- Display under centralized control blinks repeats single blink 403
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 404
- Troubleshooting 404
- Troubleshooting op unified on off controller sibe37 704_a 404
- Sibe37 704_a troubleshooting op unified on off controller 405
- Troubleshooting 394 405
- Display under centralized control blinks repeats double blink 406
- 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 407
- 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 407
- Sibe37 704_a troubleshooting op unified on off controller 407
- Troubleshooting 396 407
- Check 3 check the factors of overheat operation referring to the fault tree analysis fta shown below probe the faulty points 408
- Troubleshooting 408
- Troubleshooting op unified on off controller sibe37 704_a 408
- Check 4 power transistor check 409
- Pcb and circuit diagram 409
- Point of measurement and judgement criteria 409
- Preparation 409
- Sibe37 704_a troubleshooting op unified on off controller 409
- Troubleshooting 398 409
- Check 5 check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 410
- Troubleshooting 410
- Troubleshooting op unified on off controller sibe37 704_a 410
- Check 6 check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 411
- Sibe37 704_a troubleshooting op unified on off controller 411
- Troubleshooting 400 411
- 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 central equipment in combination make settings according to the table shown below 413
- Sibe37 704_a troubleshooting op unified on off controller 413
- Troubleshooting 402 413
- Check 9 master slave unit setting table combination of intelligent touch controller and centralized remote controller 414
- Troubleshooting 414
- Troubleshooting op unified on off controller sibe37 704_a 414
- 1 superheated degree control in cooling operation is exercised with the indoor unit electronic expansion valve refer to information on p151 2 superheated degree control in heating operation is exercised with the outdoor unit electronic expansion valve ev1 refer to information on p118 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 415
- Check 10 check for causes of wet operation referring to the fault tree analysis fta shown below identify faulty points 415
- Dirty evaporator 415
- Dirty filter 415
- Faulty control pcb 415
- Faulty control pcb including faulty capacity setting 415
- Faulty crankcase heater 415
- Faulty fan motor 415
- Faulty indoor unit gas pipe thermistor 415
- Faulty indoor unit liquid pipe thermistor 415
- Faulty valve body 415
- Faulty valve coil 415
- Obstacles 415
- Refer to information in the check 6 section overcharge of refrigerant 415
- Refrigerant accumulation 415
- Sibe37 704_a troubleshooting op unified on off controller 415
- Troubleshooting 404 415
- 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 416
- Cooling 416
- 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 416
- Frequency 416
- Heating 416
- High pressure 416
- Low pressure 416
- Troubleshooting 416
- Troubleshooting op unified on off controller sibe37 704_a 416
- 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 417
- Cooling 417
- 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 417
- Frequency 417
- Heating 417
- High pressure 417
- Low pressure 417
- Sibe37 704_a troubleshooting op unified on off controller 417
- Troubleshooting 406 417
- Check 14 list of inverter related malfunction codes 419
- Sibe37 704_a troubleshooting op unified on off controller 419
- Troubleshooting 408 419
- Current 420
- Heavy current part power transmission etc 420
- L1 p4 l4 pj p1 u2 420
- Malfunction codes related to compressor current 420
- Max control 420
- Example of connection r 410a type 64 7 thermistor resistance temperature characteristics 68 8 pressure sensor 70 9 method of checking the inverter s power transistors and diode modules 71 421
- List of electrical and functional parts 48 421
- Option list 58 421
- Part 7 appendix 421
- Piping diagrams 11 421
- Piping installation point 61 421
- Wiring diagrams for reference 23 421
- Appendix 422
- Outdoor unit 422
- Piping diagrams 422
- Piping diagrams sibe37 704_a 422
- Reyq8p 10p 12p 422
- Appendix 412 423
- D058153b 423
- Reyq14p 16p 423
- Sibe37 704_a piping diagrams 423
- Appendix 424
- D057743 424
- Piping diagrams sibe37 704_a 424
- Remq8p 424
- Appendix 414 425
- D057742 425
- Remq10p 12p 425
- Sibe37 704_a piping diagrams 425
- Appendix 426
- D057741 426
- Piping diagrams sibe37 704_a 426
- Remq14p 16p 426
- Appendix 416 427
- Fxfq p 427
- Indoor unit 427
- Refrigerant flow 427
- Refrigerant pipe connection port diameters 427
- Sibe37 704_a piping diagrams 427
- Appendix 428
- Mm model gas liquid fxzq20m 25m 32m 40m 50m φ 12 φ 6 428
- Piping diagrams sibe37 704_a 428
- Refrigerant pipe connection port diameters 428
- Fxcq fxdq25 25 m fxsq 429
- Refrigerant pipe connection port diameters 429
- Fxkq ma fxhq ma fxlq ma fxnq ma fxmq ma 430
- Fxdq nb pb 431
- Fxmq20p 25p 32p 40p 50p 63p 80p 100p 125p 140pve 431
- Refrigerant pipe connection port diameters 431
- Connection unit 432
- Field piping φ 15 c1220t o 432
- Field piping φ 9 c1220t o 432
- Filter 432
- Fxuq bevq 432
- Indoor heat exchanger 432
- Indoor unit 432
- To outdoor unit 432
- Appendix 422 433
- Bs unit 433
- Sibe37 704_a piping diagrams 433
- Appendix 434
- Outdoor unit 434
- Outer shell 434
- Reyq8p 10p 12p8y1b 434
- Terminal of m1c m2c 434
- Wiring diagrams for reference 434
- Wiring diagrams for reference sibe37 704_a 434
- Appendix 424 435
- L1 l2 l3 n 435
- Note 3 435
- Outer shell 435
- Power supply 3n 380 415v 50hz 435
- Reyq14p 16p8y1b 435
- Sibe37 704_a wiring diagrams for reference 435
- This dwg 435
- X21a x22a x23a 435
- X28a x20a 435
- X4a n3 435
- X61a z9c 435
- X7a x6a x2 435
- Z1c n 2 435
- Z3c x6a 435
- Z6c x1a 435
- Appendix 436
- El compo box 436
- Indoor f1 f2 outdoor f1 f2 436
- Note 5 436
- 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 436
- Power supply 436
- Remq8p8y1b 436
- Terminal of m1c 436
- Wiring diagrams for reference sibe37 704_a 436
- X23a blu x22a blk 436
- X29a x1m 436
- X4a x6a 436
- Z1c n 2 436
- Z5c 5 x2a x1a 436
- Appendix 426 437
- Remq10p 12p8y1b 437
- Sibe37 704_a wiring diagrams for reference 437
- Appendix 438
- Remq14p 16p8y1b 438
- Wiring diagrams for reference sibe37 704_a 438
- Appendix 428 439
- Field wiring 439
- Reyq8p 10p 12p 14p 16p8y1b 439
- Sibe37 704_a wiring diagrams for reference 439
- Appendix 440
- Reyq18p 20p 22p 24p 26p 28p 30p 32p8y1b 440
- Wiring diagrams for reference sibe37 704_a 440
- Appendix 430 441
- Reyq34p 36p 38p 40p 42p 44p 46p 48p8y1b 441
- Sibe37 704_a wiring diagrams for reference 441
- Appendix 442
- Fxfq20p 25p 32p 40p 50p 63p 80p 100p 125p8veb 442
- Indoor unit 442
- Wiring diagrams for reference sibe37 704_a 442
- 25 32 40 50 class 22 28 36 45 56 class 443
- Appendix 432 443
- Fxzq20m 25m 32m 40m 50m9v1b 443
- 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 443
- Sibe37 704_a wiring diagrams for reference 443
- Terminal 443
- 22 28 36 71 class 444
- 25 32 63 class 444
- Appendix 444
- Fxcq20m 25m 32m 63m8v3b 444
- Wiring diagrams for reference sibe37 704_a 444
- 45 56 90 140 class 445
- 50 80 125 class 445
- Appendix 434 445
- Fxcq40m 50m 80m 125m8v3b 445
- Sibe37 704_a wiring diagrams for reference 445
- Appendix 446
- Fxkq25ma 32ma 40ma 63mave 446
- Wiring diagrams for reference sibe37 704_a 446
- Appendix 436 447
- Fxdq20pb 25pb 32pb 40nb 50nb 63nbve 447
- Sibe37 704_a wiring diagrams for reference 447
- 25 class 22 28 class 448
- Appendix 448
- Fxdq20m 25m9v3b 448
- Wiring diagrams for reference sibe37 704_a 448
- Appendix 438 449
- Fxsq20p 25p 32p 40p 50p 63p 80p 100p 125p7veb 449
- Sibe37 704_a wiring diagrams for reference 449
- Appendix 450
- Fxmq20p 25p 32p 40p 50p 63p 80p 100p 125p 140pve 450
- Wiring diagrams for reference sibe37 704_a 450
- Appendix 440 451
- Fxmq200ma 250mave 451
- Sibe37 704_a wiring diagrams for reference 451
- Appendix 452
- Fxhq32ma 63ma 100mave 452
- Wiring diagrams for reference sibe37 704_a 452
- Appendix 442 453
- Fxaq20p 25p 32p 40p 50p 63pv1 453
- Sibe37 704_a wiring diagrams for reference 453
- Appendix 454
- Fxlq20ma 25ma 32ma 40ma 50ma 63mave fxnq20ma 25ma 32ma 40ma 50ma 63mave 454
- Wiring diagrams for reference sibe37 704_a 454
- 240v note 3 bev unit 455
- Appendix 444 455
- Control box 455
- D044973a 455
- Fxuq71ma 100ma 125mav1 455
- Grn ylw 455
- Indoor unit 455
- Power supply 455
- Receiver display unit 455
- Red wht 455
- Sibe37 704_a wiring diagrams for reference 455
- X2m 1 2 3 455
- Appendix 456
- Bevq71ma 100ma 125mave 456
- Wiring diagrams for reference sibe37 704_a 456
- Appendix 446 457
- Bs unit 457
- Bsv4q100pv1 457
- D063928b 457
- Electric expansion valve main discharge 457
- Electric expansion valve main suction 457
- Electric expansion valve sub cool 457
- Electric expansion valve sub discharge 457
- Electric expansion valve sub suction 457
- Sibe37 704_a wiring diagrams for reference 457
- To in d unit 457
- To out d unit 457
- Y1e y5e 457
- Appendix 458
- Bs unit top all other identical places 458
- Bsv6q100pv1 458
- D063929b 458
- El compo box 458
- For using dip switch ds1 2 refer to installation manual or service precaution label on el compo box cover 458
- 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 458
- Power supply 220 240v 50hz 458
- Use copper conductors only 7 dip switch ds1 2 initial settings are as follows 458
- Wiring diagrams for reference sibe37 704_a 458
- X1m l n blu 458
- Y1e y5e 458
- Z1c n 2 458
- List of electrical and functional parts 459
- Outdoor unit 459
- Reyq8p8y1b 12p8y1b 459
- Reyq14p8y1b 16p8y1b 460
- Remq8p8y1b 12p8y1b 461
- Remq14p8y1b 16p8y1b 462
- Appendix 452 463
- C off 87 c on 463
- Indoor side 463
- Indoor unit 463
- Sibe37 704_a list of electrical and functional parts 463
- Appendix 464
- List of electrical and functional parts sibe37 704_a 464
- Appendix 454 465
- Sibe37 704_a list of electrical and functional parts 465
- Appendix 466
- List of electrical and functional parts sibe37 704_a 466
- Appendix 456 467
- Sibe37 704_a list of electrical and functional parts 467
- Thermal protector 130 c off 83 c on 467
- Appendix 468
- List of electrical and functional parts sibe37 704_a 468
- 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 469
- Appendix 458 469
- Note 1 installation box for adaptor must be procured on site 469
- Note 1 installation box no is necessary for each adaptor marked 469
- Operation control system optional accessories 469
- Option list 469
- Option list of controllers 469
- Sibe37 704_a option list 469
- System configuration 469
- Various pcbs 469
- Appendix 470
- Building management system 470
- Installation box for adaptor must be procured on site 470
- Is a registered trade mark of echelon corporation 470
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 470
- Lonwork 470
- Option list sibe37 704_a 470
- Appendix 460 471
- Option lists outdoor unit 471
- Reyq18 32py1 471
- Reyq34 48py1 471
- Reyq8 16py1 471
- Sibe37 704_a option list 471
- Appendix 472
- In the case of 2m or less 472
- In the case of 2m or more 472
- Piping installation point 472
- Piping installation point sibe37 704_a 472
- 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 472
- The projection part between multi connection piping kits 472
- 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 472
- The example of a wrong pattern 473
- Example of connection r 410a type 475
- B a f e 477
- D d c c c 477
- Appendix 468 479
- Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 479
- Outdoor unit for fin thermistor r1t 479
- Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 479
- Sibe37 704_a thermistor resistance temperature characteristics 479
- Thermistor resistance temperature characteristics 479
- Appendix 480
- Outdoor unit thermistors for discharge pipe r3t r3 480
- Thermistor resistance temperature characteristics sibe37 704_a 480
- Pressure sensor 481
- Abnormal voltage e g overvoltage surge thunder or unbalanced voltage 482
- 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 482
- Electronic circuit 482
- Entry of conductive foreign particles 482
- Faulty compressor ground leakage 482
- Faulty fan motor ground leakage 482
- Inverter pcb 482
- Method of checking the inverter s power transistors and diode modules 482
- To make measurement disconnect all connectors and terminals 482
- Diode module checking 483
- In order to replace the faulty inverter be sure to check for the points aforementioned 1 power module checking 483
- When using the analog type of multiple tester make measurement in resistance measurement mode in the x1 483
- When using the digital type of multiple tester make measurement in diode check mode 483
- Part 8 484
- Part 8 precautions for new refrigerant r 410a 484
- Precautions for new refrigerant r 410a 484
- Precautions for new refrigerant r 410a 74 484
- About refrigerant r 410a 485
- 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 485
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 485
- Outline 485
- Precautions for new refrigerant r 410a 485
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 485
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 485
- Dairep ver2 486
- Precautions for new refrigerant r 410a 486
- Precautions for new refrigerant r 410a sibe37 704_a 486
- Thermodynamic characteristic of r 410a 486
- Refrigerant cylinders 487
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 488
- Copper tube material and thickness 488
- O soft annealed h hard drawn 488
- 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 488
- Service tools 488
- Tool compatibility 488
- 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 489
- Differences change of dimension a 489
- Flaring tool 489
- Specifications dimension a 489
- 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 494
- Cautions on product corrosion 494
- 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 494
- Http www daikin com global_ac 494
- If you have any enquiries please contact your local importer distributor and or retailer 494
- 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 494
- Sibe37 704_a 08 2009 ak 494
- 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 494
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