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Daikin REYQ34PY1 [69/438] Remq14py1 16py1 multi 14 16hp
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Refrigerant Circuit Si37-701
58 Refrigerant Circuit
1.5 REMQ14PY1, 16PY1 (Multi 14, 16HP)
No. in
refrigerant
system
diagram
Symbol Name Major Function
1 M1C Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using
the inverter, while Standard compressor is operated with commercial power supply
only. The number of operating steps is as follows when Inverter compressor is
operated in combination with Standard compressor.
Compressor operation steps : Refer to page 104~107.
2M2C
Standard compressor 1 (STD1)
3M3C
Standard compressor 2 (STD2)
4 M1F Inverter fan
Since the system is of air heat exchanging type, the fan is operated at 9-step rotation
speed by using the inverter.
5 M2F Inverter fan
Since the system is of air heat exchanging type, the fan is operated at 9-step rotation
speed by using the inverter.
6Y1E
Electronic expansion valve
(Main: EVM)
While in heating operation, PI control is applied to keep the outlet superheated degree
of air heat exchanger constant.
7Y3E
Electronic expansion valve
(Subcool: EVT)
PI control is applied to keep the outlet superheated degree of subcooling heat
exchanger constant.
8Y2E
Electronic expansion valve
(Refrigerant charge EVJ)
This is used to open/close refrigerant charge port.
9Y6S
Solenoid valve (Main bypass SVE)
This opens in cooling operation.
10 Y5S Solenoid valve (Hot gas: SVP) Used to prevent the low pressure from transient falling.
11 Y4S
Solenoid valve (Refrigerant
regulator liquid pipe SVL)
This is used to collect refrigerant to the refrigerant regulator.
12 Y1S
Solenoid valve (Refrigerant
regulator gas purging pipe SVG)
This is used to collect refrigerant to the refrigerant regulator.
13 Y7S
Solenoid valve (Refrigerant
regulator discharge pipe SVO)
This is used to discharge refrigerant from the refrigerant regulator.
14 Y8S
Solenoid valve (Discharge
pipe of refrigerant regulator)
Bypass the high pressure gas to the refrigerant regulator.
15 Y3S
4 way valve (Heat exchanger
switch 20SA)
This is used to switch outdoor heat exchanger to evaporator or condenser.
16 Y2S
4 way valve (Dual pressure
gas pipe switch 20SB)
This is used to switch dual pressure gas pipe to high pressure or low pressure.
17 S1NPH High pressure sensor Used to detect high pressure.
18 S2NPL Low pressure sensor Used to detect low pressure.
19 S1PH
HP pressure switch (For INV
compressor)
This functions when pressure increases to stop operation and avoid high pressure
increase in the fault operation.
20 S2PH
HP pressure switch (For STD
compressor 1)
21 S3PH
HP pressure switch (For STD
compressor 2)
22 —
Pressure regulating valve
(Liquid pipe)
This is used when pressure increases, to prevent any damage on components caused
by pressure increase in transport or storage.
23 —
Pressure regulating valve
(Refrigerant regulator)
This is used when pressure increases, to prevent any damage on components caused
by pressure increase in transport or storage.
24 — Subcooling heat exchanger Apply subcooling to liquid refrigerant.
25 — Refrigerant regulator Surplus refrigerant is held according to the operation conditions.
26 — Capillary tube
Used to return the refrigerating oil separated through the oil separator to the INV
compressor.
27 — Capillary tube
Used to return the refrigerating oil separated through the oil separator to the STD1
compressor.
28 — Capillary tube
Used to return the refrigerating oil separated through the oil separator to the STD2
compressor.
29 — Capillary tube This is used to discharge refrigerant from the refrigerant regulator.
30 R1T Thermistor (Outdoor air: Ta) Used to detect outdoor temperature, correct discharge pipe temperature, and others.
31 R8T
Thermistor (Suction pipe: TsA)
Used to detect suction pipe temperature.
32 R31T
Thermistor (INV discharge pipe: Tdi)
Used to detect discharge pipe temperature.33 R32T
Thermistor (STD1 discharge pipe: Tds1)
34 R33T
Thermistor (STD2 discharge pipe: Tds2)
35 R4T
Thermistor (Heat exchanger deicer: Tb)
Used to detect liquid pipe temperature of air heat exchanger.
36 R2T
Thermistor (Heat exchanger gas pipe Tg)
This detects temperature of gas pipe for air heat exchanger.
37 R7T
Thermistor (Heat exchanger liquid pipe Tf)
This detects temperature of liquid pipe between the air heat exchanger and main
electronic expansion valve.
38 R5T
Thermistor (Subcooling heat
exchanger gas pipe: Tsh)
This detects temperature of gas pipe on the evaporator side for the subcooling heat
exchanger.
39 R6T
Thermistor (Subcooling heat
exchanger liquid pipe Tl)
This detects temperature of liquid pipe between the main expansion valve and
subcooling heat exchanger.
40 R9T Thermistor (Liquid pipe Tsc)
This detects temperature of liquid pipe between the liquid stop valve and subcooling
heat exchanger.
Содержание
- Basic control 9 2
- Combination of outdoor units 4 model selection 2
- Function general 6 2
- Functional parts layout 2 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 9 2
- Part 4 function 5 2
- R 410a heat recovery 50hz 2
- Refrigerant circuit 0 2
- Refrigerant flow for each operation mode 7 2
- Specifications 0 2
- Table of contents 2
- Other control 32 3
- Outdoor unit pc board layout 69 3 field setting 70 3
- Outline of control indoor unit 33 3
- Part 5 test operation 47 3
- Protection control 24 3
- Special control 11 3
- Test operation 48 3
- Part 6 troubleshooting 09 4
- Symptom based troubleshooting 12 2 troubleshooting by remote controller 15 4
- Troubleshooting by indication on the remote controller 30 4
- Troubleshooting op central remote controller 26 5
- Troubleshooting op unified on off controller 31 5
- Drawings flow charts v 6
- Example of connection r 410a type 01 7 thermistor resistance temperature characteristics 05 8 pressure sensor 07 9 method of checking the inverter s power transistors and diode modules 08 6
- Index i 6
- List of electrical and functional parts 85 6
- Option list 96 6
- Part 7 appendix 51 6
- Part 8 precautions for new refrigerant r 410a 11 6
- Piping diagrams 52 6
- Piping installation point 99 6
- Precautions for new refrigerant r 410a 12 6
- Wiring diagrams for reference 61 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
- 220 240v 50hz 220v 60hz v1 13
- 220 240v 50hz y1 13
- 380 415v 50hz 13
- Bs units 13
- Bsvq 100p 160p 250p v1 13
- E the unit with anti corrosion treatment 13
- General information 13
- Heat recovery reyq 8p 10p 12p 14p 16p 18p 20p 22p 24p y1 e 26p 28p 30p 32p 34p 36p 38p 40p 42p 44p 46p 48p 13
- Indoor units 13
- Model names of indoor outdoor units 13
- Model names of indoor outdoor units si37 701 13
- Note fxdq has following 2 series as show below fxdq p n a vet without drain pump for general asia except for eu china and australia fxdq p n a ve with drain pump ma na rohs directive models specifications dimensions and other functions are not changed compared with m n type fxzq only for eu australia fxdyq only for australia 13
- Outdoor units normal series 13
- Series model name power supply 13
- Type model name power supply 13
- 600 ceiling mounted cassette type multi flow 14
- Bs units 14
- Ceiling concealed duct type aus exclusive use 14
- Ceiling mounted built in type 14
- Ceiling mounted cassette corner type 14
- Ceiling mounted cassette type double flow 14
- Ceiling mounted cassette type multi flow 14
- Ceiling mounted duct type 14
- Ceiling suspended type 14
- Concealed floor standing type 14
- External appearance 14
- Floor standing type 14
- General information 3 14
- Indoor units 14
- Si37 701 external appearance 14
- Slim ceiling mounted duct type 14
- Wall mounted type 14
- External appearance si37 701 15
- General information 15
- Outdoor units 15
- Reyq18p 20p 22p 24p 15
- Reyq26p 28p 15
- Reyq30p 32p reyq34p 36p 38p 40p 15
- Reyq42p 44p reyq46p 48p 15
- Reyq8p 10p 12p 14p 16p 15
- Combination of outdoor units 16
- Connectable indoor units number and capacity 17
- General information 17
- Model selection 17
- Model selection si37 701 17
- Vrv iii heat recovery series 17
- Connectable indoor unit 18
- For general asia except for eu china and australi 18
- Fxdq p n a ve with drain pump fxzq only for eu australia fxdyq only for australia 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
- Note fxdq has following 2 series as shown below fxdq p n a vet without drain pump 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 unit s 21
- Specifications 21
- Specifications si37 701 21
- Si37 701 specifications 22
- Specifications 11 22
- Specifications 23
- Specifications si37 701 23
- Si37 701 specifications 24
- Specifications 13 24
- Specifications 25
- Specifications si37 701 25
- Si37 701 specifications 26
- Specifications 15 26
- Specifications 27
- Specifications si37 701 27
- Si37 701 specifications 28
- Specifications 17 28
- Specifications 29
- Specifications si37 701 29
- Si37 701 specifications 30
- Specifications 19 30
- Specifications 31
- Specifications si37 701 31
- Ceiling mounted cassette type double flow 32
- Indoor units 32
- Si37 701 specifications 32
- Specifications 21 32
- Ceiling mounted cassette type double flow 33
- Specifications 33
- Specifications si37 701 33
- Ceiling mounted cassette type multi flow 34
- Si37 701 specifications 34
- Specifications 23 34
- Ceiling mounted cassette type multi flow 35
- Specifications 35
- Specifications si37 701 35
- 600 ceiling mounted cassette type multi flow 36
- Si37 701 specifications 36
- Specifications 25 36
- 600 ceiling mounted cassette type multi flow 37
- Specifications 37
- Specifications si37 701 37
- Ceiling mounted cassette corner type 38
- Si37 701 specifications 38
- Specifications 27 38
- Slim ceiling mounted duct type with drain pump 39
- Specifications 39
- Specifications si37 701 39
- Si37 701 specifications 40
- Slim ceiling mounted duct type with drain pump 40
- Specifications 29 40
- Slim ceiling mounted duct type without drain pump 41
- Specifications 41
- Specifications si37 701 41
- Si37 701 specifications 42
- Slim ceiling mounted duct type without drain pump 42
- Specifications 31 42
- Slim ceiling mounted duct type pve with drain pump pvet without drain pump 43
- Specifications 43
- Specifications si37 701 43
- Ceiling concealed duct type australia exclusive use 44
- Si37 701 specifications 44
- Specifications 33 44
- Specifications 45
- Specifications si37 701 45
- Ceiling mounted built in type 46
- Si37 701 specifications 46
- Specifications 35 46
- Ceiling mounted built in type 47
- Specifications 47
- Specifications si37 701 47
- Ceiling mounted built in type 48
- Si37 701 specifications 48
- Specifications 37 48
- Ceiling mounted duct type 49
- Specifications 49
- Specifications si37 701 49
- Ceiling mounted duct type 50
- Si37 701 specifications 50
- Specifications 39 50
- Ceiling suspended type 51
- Specifications 51
- Specifications si37 701 51
- Si37 701 specifications 52
- Specifications 41 52
- Wall mounted type 52
- Specifications 53
- Specifications si37 701 53
- Wall mounted type 53
- Floor standing type 54
- Si37 701 specifications 54
- Specifications 43 54
- Floor standing type 55
- Specifications 55
- Specifications si37 701 55
- Concealed floor standing type 56
- Si37 701 specifications 56
- Specifications 45 56
- Concealed floor standing type 57
- Specifications 57
- Specifications si37 701 57
- Bs units 58
- Connection range for bs unit 58
- Si37 701 specifications 58
- Specifications 47 58
- Functional parts layout 2 60
- Part 3 refrigerant circuit 60
- Refrigerant circuit 0 60
- Refrigerant flow for each operation mode 7 60
- Refrigerant circuit 61
- Refrigerant circuit si37 701 61
- Reyq8p 10p 12p 61
- Dual pressure gas pipe 62
- Gauge port 62
- Heat exchanger 1 62
- Heat exchanger 2 62
- Liquid pipe subcool heat exchanger 2 62
- Refrigerant circuit 51 62
- Reyq8p 10p 12p 8hp 10hp 12hp single type inv unit std unit 62
- Si37 701 refrigerant circuit 62
- Stop valve 62
- Subcool heat exchanger 1 62
- Suction pipe 62
- Refrigerant circuit 63
- Refrigerant circuit si37 701 63
- Reyq14p 16p 63
- Gauge port 64
- Heat exchanger 1 64
- Heat exchanger 2 64
- Liquid pipe 64
- Refrigerant circuit 53 64
- Reyq14p 16p 14hp 16hp single type inv unit 2 64
- Si37 701 refrigerant circuit 64
- Stop valve 64
- Subcool heat exchanger 1 64
- Subcool heat exchanger 2 64
- Suction pipe 64
- Refrigerant circuit 65
- Refrigerant circuit si37 701 65
- Remq8py1 multi 8hp 65
- Gauge port 66
- Refrigerant circuit 55 66
- Remq8py1 66
- Si37 701 refrigerant circuit 66
- Stop valve 66
- Stop valve dual pressure gas pipe 66
- Stop valve equalizing pipe 66
- Stop valve liquid pipe 66
- Suction pipe 66
- Refrigerant circuit 67
- Refrigerant circuit si37 701 67
- Remq10py1 12py1 multi 10 12hp 67
- Gauge port 68
- Inv s1 68
- Refrigerant circuit 57 68
- Remq10py1 12py1 68
- Si37 701 refrigerant circuit 68
- Stop valve 68
- Stop valve dual pressure gas pipe 68
- Stop valve equalizing pipe 68
- Stop valve liquid pipe 68
- Suction pipe 68
- Refrigerant circuit 69
- Refrigerant circuit si37 701 69
- Remq14py1 16py1 multi 14 16hp 69
- Gauge port 70
- Refrigerant circuit 59 70
- Remq14py1 16py1 70
- S2 inv s1 70
- Si37 701 refrigerant circuit 70
- Stop valve 70
- Stop valve dual pressure gas pipe 70
- Stop valve equalizing pipe 70
- Stop valve liquid pipe 70
- Suction pipe 70
- Bs unit functional parts 71
- Bsvq100 160 250pv1 71
- Indoor side outdoor side 71
- Fxcq fxfq fxzq fxkq fxdq fxdyq fxsq fxmq fxhq fxaq fxlq fxnq 72
- Indoor units 72
- Front view 73
- Functional parts layout 73
- Functional parts layout si37 701 73
- Refrigerant circuit 73
- Reyq8p 10p 12p 73
- Front view 74
- Refrigerant circuit 63 74
- Reyq14p 16p 74
- Si37 701 functional parts layout 74
- Front view 75
- Functional parts layout si37 701 75
- Note for reference numbers refer to p54 75
- Refrigerant circuit 75
- Remq8p 75
- Front view 76
- Note for reference number refer to p56 76
- Refrigerant circuit 65 76
- Remq10p 12p 76
- Si37 701 functional parts layout 76
- Front view 77
- Functional parts layout si37 701 77
- Note for reference number refer to p58 77
- Refrigerant circuit 77
- Remq14p 16p 77
- Cooling unit 78
- Cooling unit thermostat on 78
- Operation off 78
- Operation on 78
- Refrigerant circuit 67 78
- Refrigerant flow for each operation mode 78
- Reyq8p 10p 12p cooling operation 78
- Si37 701 refrigerant flow for each operation mode 78
- Thermostat off 78
- Bs unit 79
- Heating operation 79
- Heating unit 79
- Heating unit thermostat on 79
- Indoor unit 79
- One body type 79
- Operation off 79
- Operation on 79
- Refrigerant circuit 79
- Refrigerant flow for each operation mode si37 701 79
- Thermostat off 79
- Bs unit 81
- Cooling oil return operation 81
- Cooling unit 81
- Cooling unit thermostat on 81
- Indoor unit 81
- One body type 81
- Operation off 81
- Operation on 81
- Refrigerant circuit 81
- Refrigerant flow for each operation mode si37 701 81
- Thermostat off 81
- Bs unit 82
- Heating oil return operation 82
- Heating unit 82
- Heating unit thermostat off 82
- Heating unit thermostat on 82
- Indoor unit 82
- One body type 82
- Operation off 82
- Operation on 82
- Refrigerant circuit 71 82
- Si37 701 refrigerant flow for each operation mode 82
- Bs unit 83
- Cooling unit thermostat on 83
- Heating unit 83
- Indoor unit 83
- Oil return operation at simultaneous cooling heating operation 83
- One body type 83
- Operation off 83
- Operation on 83
- Refrigerant circuit 83
- Refrigerant flow for each operation mode si37 701 83
- Thermostat on 83
- Bs unit bs unit 84
- Heating unit 84
- Heating unit heating unit thermostat on thermostat on 84
- Indoor unit indoor unit 84
- One body type 84
- Operation off 84
- Operation on operation on 84
- Partial defrosting 1 defrosting in the right unit 84
- Refrigerant circuit 73 84
- Si37 701 refrigerant flow for each operation mode 84
- Thermostat off 84
- Bs unit bs unit 85
- Heating unit 85
- Heating unit heating unit thermostat on thermostat on 85
- Indoor unit indoor unit 85
- One body type 85
- Operation off 85
- Operation on operation on 85
- Partial defrosting 2 defrosting in the left unit 85
- Refrigerant circuit 85
- Refrigerant flow for each operation mode si37 701 85
- Thermostat off 85
- Bs unit 86
- Cooling unit 86
- Cooling unit thermostat on 86
- Indoor unit 86
- One body type 86
- Operation off 86
- Operation on 86
- Refrigerant circuit 75 86
- Reyq14p 16p cooling operation 86
- Si37 701 refrigerant flow for each operation mode 86
- Thermostat off 86
- Bs unit bs unit 87
- Cooling unit 87
- Heating operation 87
- Heating unit 87
- Heating unit thermostat on thermostat on 87
- Indoor unit indoor unit 87
- One body type 87
- Operation off 87
- Operation on operation on 87
- Refrigerant circuit 87
- Refrigerant flow for each operation mode si37 701 87
- Thermostat off 87
- Bs unit 89
- Cooling oil return operation 89
- Cooling unit 89
- Cooling unit thermostat on 89
- Indoor unit 89
- One body type 89
- Operation off 89
- Operation on 89
- Refrigerant circuit 89
- Refrigerant flow for each operation mode si37 701 89
- Thermostat off 89
- Bs unit 90
- Heating oil return operation 90
- Heating unit 90
- Heating unit thermostat on 90
- Indoor unit 90
- One body type 90
- Operation off 90
- Operation on 90
- Refrigerant circuit 79 90
- Si37 701 refrigerant flow for each operation mode 90
- Thermostat off 90
- Bs unit 91
- Cooling unit thermostat on 91
- Heating unit 91
- Indoor unit 91
- Oil return operation at simultaneous cooling heating operation 91
- One body type 91
- Operation off 91
- Operation on 91
- Refrigerant circuit 91
- Refrigerant flow for each operation mode si37 701 91
- Thermostat on 91
- Bs unit 92
- Heating unit 92
- Heating unit thermostat on 92
- Indoor unit 92
- One body type 92
- Operation off 92
- Operation on 92
- Partial defrosting 1 defrosting in the right unit 92
- Refrigerant circuit 81 92
- Si37 701 refrigerant flow for each operation mode 92
- Thermostat off 92
- Bs unit 93
- Heating unit 93
- Heating unit thermostat on 93
- Indoor unit 93
- One body type 93
- Operation off 93
- Operation on 93
- Partial defrosting 2 defrosting in the left unit 93
- Refrigerant circuit 93
- Refrigerant flow for each operation mode si37 701 93
- Thermostat off 93
- Cooling unit 94
- Operation off 94
- Operation on theromstat off 94
- Operation on theromstat on 94
- Refrigerant circuit 83 94
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 94
- Reyq18p 20p cooling operation 94
- Si37 701 refrigerant flow for each operation mode 94
- Heating operation 95
- Heating unit 95
- Operation off 95
- Operation on theromstat off 95
- Operation on theromstat on 95
- Refrigerant circuit 95
- Refrigerant flow for each operation mode si37 701 95
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 95
- Cooling unit 96
- Heating unit 96
- Operation off theromstat on 96
- Operation on theromstat on 96
- Refrigerant circuit 85 96
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 96
- Si37 701 refrigerant flow for each operation mode 96
- Simultaneous cooling heating operation 96
- Cooling oil return operation 97
- Cooling unit 97
- Operation off 97
- Operation on theromstat off 97
- Operation on theromstat on 97
- Refrigerant circuit 97
- Refrigerant flow for each operation mode si37 701 97
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 97
- Heating oil return operation 98
- Heating unit 98
- Operation on theromstat off 98
- Operation on theromstat on 98
- Refrigerant circuit 87 98
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 98
- Si37 701 refrigerant flow for each operation mode 98
- Theromstat off 98
- Cooling unit 99
- Heating unit 99
- Oil return operation at simultaneous cooling heating operation 99
- Operation on 99
- Operation on theromstat on 99
- Refrigerant circuit 99
- Refrigerant flow for each operation mode si37 701 99
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 99
- Heating unit 100
- Operation off 100
- Operation on theromstat off 100
- Operation on theromstat on 100
- Partial defrosting 1 defrosting in the right unit 100
- Refrigerant circuit 89 100
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 100
- Si37 701 refrigerant flow for each operation mode 100
- Heating unit 101
- Partial defrosting 2 defrosting in the left unit 101
- Refrigerant circuit 101
- Refrigerant flow for each operation mode si37 701 101
- Remq8py1 multi 8hp remq10 12py1 multi 10 12hp 101
- Discharge of refrigerant discharge refrigerant from refrigerant regulator by opening of svc when the load of the outdoor unit is large 102
- Operation of refrigerant regulator 102
- 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 102
- Recovery of refrigerant surplus refrigerant is recovered to refrigerant regulator by opening of svl and svg when the indoor unit load is small 102
- Refrigerant circuit 91 102
- Si37 701 refrigerant flow for each operation mode 102
- Cooling unit 103
- Heating unit 103
- In cooling operation 103
- In equalization 103
- Pressure equalizing when switching operation cooling heating 103
- Refrigerant circuit 103
- Refrigerant flow for each operation mode si37 701 103
- To heating operation 103
- 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 103
- Cooling unit 104
- Heating unit 104
- In equalization 104
- In heating operation 104
- Refrigerant circuit 93 104
- Si37 701 refrigerant flow for each operation mode 104
- To cooling operation 104
- 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 104
- Basic control 9 106
- Function general 6 106
- Other control 32 106
- Outline of control indoor unit 33 106
- Part 4 function 106
- Protection control 24 106
- Special control 11 106
- Function general 107
- Symbol 107
- Operation mode 109
- 1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant 1 and 2 refer 6 electronic expansion valve control on page 143 110
- Basic control 110
- List of functions in normal operation 110
- Normal operation 110
- Compressor pi control 111
- 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 111
- Cooling operation 111
- Heating operation 111
- 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 111
- Rotation of outdoor units system with two outdoor units 111
- System with three outdoor units 111
- Timing of outdoor rotation in start of startup control 111
- Function 101 112
- Operating priority and rotation of compressors for multi standard connection system 112
- Si37 701 basic control 112
- Basic control si37 701 113
- Function 113
- 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 113
- Inv std1 std2 113
- No 1 no 4 no 7 113
- No 2 no 5 no 8 113
- No 3 no 6 no 9 113
- Reyq38p 40p 113
- Reyq42p 44p 113
- Reyq46p 48p 113
- Compressor step control multi outdoor unit connection is available on the standard connection system 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 114
- Function 103 114
- 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 114
- Operating priority and rotation of compressors 114
- Reyq14py1 16py1 114
- Reyq8py1 10py1 12py1 114
- Si37 701 basic control 114
- Single unit installation 114
- Basic control si37 701 115
- Function 115
- 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 115
- Represents the range in which hz is not stepped up 115
- Reyq18py1 20py1 8 10 12hp 115
- Reyq22py1 24py1 10 12 12hp 115
- Two unit multi system 115
- Function 105 116
- 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 116
- Represents the range in which hz is not stepped up 116
- Reyq 32py1 16 16hp 116
- Reyq26py1 28py1 10 12 16hp 116
- Si37 701 basic control 116
- Three unit multi system 116
- Basic control si37 701 117
- Function 117
- 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 117
- Represents the range in which hz is not stepped up 117
- Reyq34py1 36py1 8 10 12 16hp 117
- Reyq38py1 40py1 10 12 12 16hp 117
- Function 107 118
- 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 118
- Represents the range in which hz is not stepped up 118
- Reyq42py1 44py1 10 12 16 16hp 118
- Reyq46py1 48py1 14 16 16 16hp 118
- Si37 701 basic control 118
- Electronic expansion valve pi control 119
- 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 119
- 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 so that the evaporator outlet superheated degree sh will become constant 119
- 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 in response to outdoor temperature and close the valve after the completion of refrigerant charge for normal operation fully open this electronic expansion valve 119
- 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 119
- Sh tsh te sh evaporator outlet superheated degree c tsh suction pipe temperature c detected by the subcool heat exchanger outlet thermistor r5t te low pressure equivalent saturated temperature c 119
- Step control of outdoor unit fans 119
- Subcooling electronic expansion valve evt control in order to make the maximum use of the subcool heat exchanger this function is used to exert pi control on the electronic expansion valve y3e so that the evaporator side gas pipe superheated degree sh will become constant 119
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 119
- Outdoor unit fan control in cooling operation 120
- 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 120
- A1 condenser condenser condenser a2 condenser condenser evaporator a3 condenser evaporator not in use a4 condenser evaporator evaporator b1 not in use evaporator not in use b2 evaporator evaporator not in use b3 evaporator evaporator evaporator 121
- Basic control si37 701 121
- Function 121
- Heat exchanger control 121
- Independent system 121
- Mode unit 1 unit 2 unit 3 121
- Multi outdoor unit system 121
- Note the mode for an single type and a multi type with two units connected is unit 1 mode and unit 2 mode unit 1 mode unit 2 mode and unit 3 mode are available only for three unit connected multi type 121
- 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 121
- Special control 122
- Startup control 122
- Startup control in cooling operation 122
- 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 122
- Startup control in heating operation 123
- Large capacity start up control heating 124
- Start up std compressors at intervals of 15 seconds 124
- 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 125
- Cooling oil return operation 125
- Oil return operation 125
- 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 125
- 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 125
- 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 127
- Heating oil return operation 127
- 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 127
- Defrost operation 129
- 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 conductivity of outdoor unit heat exchanger is calculated by tc te and compressor loads 129
- 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 131
- Pe_min and pc_max indicate the minimum and maximum values in the system respectively 131
- Pump down residual operation 131
- Pump down residual operation in cooling operation 131
- Pe_min and pc_max indicate the minimum and maximum values in the system respectively 132
- Pump down residual operation in heating operation and simultaneous cooling heating operation 132
- Crankcase heater control 133
- 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 133
- Restart standby 133
- Standby 133
- Used to forcedly stop the compressor for a period of 2 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 133
- 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 134
- Stop due to malfunction 134
- Stopping operation 134
- This mode is used to define actuator operations when the system stops 134
- When system is in stop mode normal operation stop 134
- High pressure protection control 135
- In cooling operation 135
- Protection control 135
- The following control is performed in the entire system pc_max indicates the maximum value within the system 135
- 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 135
- Heating operation and simultaneous cooling heating operation 136
- The following control is performed in the entire system pc_max indicates the maximum value within the system 136
- Because of common low pressure the following control is performed in the system pe_min indicates the minimum value within the system 137
- In cooling operation 137
- Low pressure protection control 137
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 137
- When occurring 4 times within 30 min the malfunction code e4 is output 137
- In heating operation and simultaneous cooling heating operation 138
- The following control is performed in the system pe_min indicates the minimum value within the system 138
- When occurring 4 times within 30 min the malfunction code e4 is output 138
- Contents 139
- Discharge pipe protection control 139
- Inv compressor 139
- Std compressor 139
- The following control is performed for each compressor of single unit as well as multi units 139
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 139
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 140
- 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 140
- Inverter overcurrent protection control 140
- Inverter protection control 140
- Perform the following control of integrated as well as multi units for each inv compressor 140
- Inverter fin temperature control 141
- Perform the following control of integrated as well as multi units for each inv compressor 141
- Std compressor overload protection 142
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 142
- 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 2 emergency operation with outdoor unit pc board 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 207 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 143
- Backup operation 143
- Demand operation 143
- Heating operation is prohibited above 24 c ambient temperature 143
- Heating operation prohibition 143
- 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 pc board setting are available 143
- 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 adapter is required 143
- Other control 143
- 1 if any malfunction occurs the relevant malfunction code will be displayed according to the malfunction code display of the remote controller 2 when the aux electric heater turns on the fan will stop after it conducts residual operation for 1 min 3 when the drain pump kit turns on the drain pump kit will stop after it conducts residual operation for a period of 5 min 4 if the evaporator inlet temperature is kept at not more than 5 c for a period of cumulative 10 min or not more than 1 c for a cumulative period of 40 min frost prevention operation will be conducted if the evaporator inlet temperature is kept at not less than 7 c for a consecutive period of 10 min the frost prevention operation will be reset 5 thermostat status 144
- 6 the fxcq fxfq fxkq and fxsq series have the drain pump kit as standard equipment 144
- Led in remote controller turns on 144
- Operation flow chart 144
- Outline of control indoor unit 144
- Turn on power supply 144
- Blasting operation 145
- Function 145
- Heating operation 145
- Microcomputer dry display 145
- Outline of control indoor unit si37 701 145
- Thermostat control 146
- Thermostat sensor in remote controller 146
- 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 148
- Function 137 148
- 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 148
- Si37 701 outline of control indoor unit 148
- Thermostat control in dry operation 148
- Thermostat control while in normal operation 148
- 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 set 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 148
- 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 148
- While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 148
- Drain pump control 149
- Conditions for starting when air flow 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 151
- Freeze prevention 151
- Freeze prevention by off cycle indoor unit 151
- Function 151
- Outline of control indoor unit si37 701 151
- 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 air flow 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 151
- Heater control optional pc board krp1b is required 152
- 1 l or ll only on fxfq models 153
- List of swing flap operations 153
- Swing flaps operate as shown in table below 153
- Electronic expansion valve control 154
- 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 155
- Hot start control in heating operation only 155
- Louver control for preventing ceiling dirt 156
- Outdoor unit pc board layout 69 3 field setting 70 158
- Part 5 test operation 158
- Test operation 48 158
- Below figure shows the installation process install in the order of the steps shown 159
- Installation process 159
- Test operation 159
- 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 160
- Check work prior to turn power supply on 160
- Follow the following procedure to conduct the initial test operation after installation 160
- Procedure and outline 160
- Check the stop valves for conditions 161
- Check to be sure the stop valves are under the following conditions 161
- Correction amount with indoor unit correction amount with a total capacity of indoor units 161
- Has the additional refrigerant charging amount been recorded on the precautions for servicing label 161
- If the refrigerant charging is still insufficient turn on the power supply following the information on the next page 161
- 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 161
- Open open open 161
- Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 162
- Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate 162
- Check for normal operation 162
- Check the led display of the outdoor unit pc board 162
- Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 162
- Conduct check operations 162
- Make field settings if needed for the setting procedure refer to information in 3 field setting from outdoor unit on page 183 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 162
- Make field settings with outdoor unit pc board 162
- Si37 701 test operation 162
- Test operation 151 162
- The check operations shown below will be automatically initiated check for erroneous wirings check for failure to open stop valves check for excessive refrigerant refilling automatic judgment of piping length 162
- The master unit is the outdoor unit to which the transmission wiring for the indoor units is conncted the other outdoor units are slave units 162
- Turn outdoor unit and indoor unit power on 162
- Turn power on 162
- 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 163
- Air tight test and vacuum drying 163
- Always use nitrogen gas for the airtightness test 163
- Gauge manifold charge hose valve 163
- 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 additional refrigerant charge and check operation reyq8 16py1 163
- Reyq18 48py1 163
- See shutoff valve operation procedure in 1 before working for details on handling the shutoff valve 163
- Test operation 163
- Test operation si37 701 163
- The airtightness 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 163
- The refrigerant charge port is connected to unit pipe when shipped the unit contains the refrigerant so use caution when attaching the charge hose 163
- 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 163
- 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 163
- Pipe insulation 164
- Additional refrigerant charge and check operation 165
- Before working 165
- After tightening the cap make sure no refrigerant gas is leaking 166
- Be sure to use the correct tools 166
- Do not open the shutoff valve until 1 check work prior to turn power supply on in page 149 are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation 166
- Reyq18 48py1 166
- Reyq8 16py1 166
- Shutoff valve operation procedure 166
- The shutoff valve is not a back seat type if forced it to open it might break the valve body 166
- Tightening torque the sizes of the shutoff valves on each model and the tightening torque for each size are listed in the table below 166
- When operating the shutoff valve follow the procedure instructed below 166
- When using a service port use the charge hose 166
- 3 3 3 3 3 168
- 3 3 4 3 4 168
- 3 4 3 3 3 168
- 4 3 3 3 3 168
- 5 3 5 5 3 168
- How to check how many units are connected 168
- It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the pc board a1p of outdoor unit in case of multi system master unit follow the procedure below to check how many indoor or outdoor units are turned on 168
- Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 h1p off default 168
- Procedure of adding refrigerant charging and check operation 169
- Air tight test 170
- If the additional charging amount was charged fully close the valve b and go to step 7 if the additional charging amount was not charged fully close the valve b and go to step 5 5 perform the refrigerant charging operation following refrigerant charging operation procedure as shown below and charge the remaining refrigerant of the additional charging amount for performing the refrigerant charging operation the push button on the pc board a1p of outdoor unit in case of multi system master unit are use see the figure on the previous page in addition the refrigerant are charged from the refrigerant charge port via the valve a see the next figure for operating the push button and opening and closing the valve follow the work procedure 170
- Installation work for bs indoor unit 2 calculate the additional charging amount using how to calculate the additional refrigerant to be charged in 6 example of connection 3 open the valve b see next figure the valve a c and the liquid pipe suction gas pipe hp lp gas pipe equalizer pipe shutoff valves must be left closed and charge the refrigerant of the additional charging amount from the liquid side shutout valve service port 170
- Make sure the following works are complete in accordance with the installation manual 170
- Piping work 170
- Procedure of adding refrigerant charging 170
- Reyq18 48py1 170
- Reyq8 16py1 170
- Si37 701 test operation 170
- Test operation 159 170
- Vacuum drying 170
- Wiring work 170
- Note the refrigerant will be charged about 30kg in one hour at outdoor temp 30 c db 12kg at 0 cdb if you need to speedup in case of multi system connect the refrigerant tanks to each outdoor unit as shown in the next figure 171
- Reyq18 48py1 171
- Reyq8 16py1 171
- Test operation 171
- Test operation si37 701 171
- 1 open the liquid pipe suction gas pipe hp lp gas pipe and equalizer pipe shutoff valves the valve a c must be closed the valve a c means the valves in the figure of reyq8 16py1 on page 159 2 close the el compo box lid and all front panel except on the side of the el compo box 1 and turn the power to the outdoor unit and all connected indoor units 2 after h2p stop blinking about 12 minutes after turning on the power check led displays as shown in table display of normal system and the system is normal state if h2p is blinking check the malfunction code in the remote controller and correct the malfunction in accordance with remote controller display malfunction code in chapter 1 1 lead the refrigerant charge hose etc from the pipe intake all front panels must be closed at the procedure 3 2 if you perform the refrigerant charging operation within the refrigerant system that have the power off unit the operation cannot finish properly for confirming the number of the outdoor and indoor un 172
- 3 charge the remained refrigerant by additional refrigerant charging operation of service mode about the method of additional refrigerant charging operation refer to the service precaution labe lower attached on the el compo box lid of the outdoor unit 172
- 4 close the valve a if the additional charging amount of refrigerant was charged and push the return button bs3 once 172
- How to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 172
- Refrigerant charging operation procedure 172
- Table display of normal system 172
- Procedure of check operation 173
- Note if any malfunction codes other than the above are displayed check the service manual for how to respond 175
- Remote controller displays malfunction code reyq8 16py1 175
- Reyq18 48py1 175
- Onsite settings 176
- Before test run 177
- Test run 177
- Checks after test run 178
- 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 179
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter pc board a2p and control transformer t1r t2r in switch box together 179
- Operation when power is turned on 179
- Tap the reset button on the outdoor unit pc board 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 179
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 179
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 179
- When turning on power first time 179
- When turning on power the second time and subsequent 179
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 180
- 2 set mode display led leds display mode according to the setting 180
- 3 mode setting switch used to change mode 180
- 4 local setting switch used to make field settings 180
- Outdoor unit pc board 180
- Outdoor unit pc board layout 180
- Field setting 181
- Field setting from remote controller 181
- Wireless remote controller indoor unit 182
- Simplified remote controller 183
- 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 set 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 184
- Setting contents and code no vrv indoor unit 184
- Si37 701 field setting 184
- Test operation 173 184
- Applicable range of field setting 185
- Field setting si37 701 185
- Static pressure selection 185
- Test operation 185
- 1 filter sign setting 186
- 2 ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 186
- 3 selection of thermistor select the thermistor to control room temperature 186
- 4 filter cleaning displayed or not displayed whether or not to display filter cleaning after operation of certain duration can be selected 186
- 5 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 adapter an optional accessory 186
- Detailed explanation of setting modes 186
- If switching the filter sign on time set as given in the table below set time 186
- Setting table 186
- 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 186
- 6 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 t1 terminal of the operation terminal block x1a in the electric component box 187
- 7 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 137 187
- 8 air flow setting when heating thermostat is off this setting is used to set air flow when heating thermostat is off 187
- 9 auto restart after power failure reset 187
- 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 187
- 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 187
- 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 187
- Setting table 187
- When thermostat off air flow 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 187
- 10 air flow when cooling thermostat is off this is used to set air flow to ll air flow when cooling thermostat is off 188
- 11 setting of normal air flow make the following setting according to the ceiling height the setting position no is set to 01 at the factory 188
- 12 air flow direction setting set the air flow 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 set to 01 188
- 13 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 188
- In the case of fxaq fxhq 188
- In the case of fxfq100 125 188
- In the case of fxfq25 80 188
- Setting table 188
- 14 setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 189
- 15 setting of the static pressure selection for fxdq model 189
- 16 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 189
- 17 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 189
- Setting table 189
- Some indoor unit models are not equipped with draft prevention upward function 189
- 18 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 190
- 19 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 190
- Centralized control group no setting 191
- Caution when turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display this is not an operative fault 192
- Centralized used when you want to turn on by central remote controller only and turn on off freely by remote controller during set time 192
- Contents of control modes 192
- Group no setting example 192
- Individual used when you want to turn on off by both central remote controller and remote controller 192
- Off control only possible by remote controller used when you want to turn on by central remote controller only and off by remote controller only 192
- On off control impossible by remote controller used when you want to turn on off by central remote controller only cannot be turned on off by remote controller 192
- Setting of operation control mode from remote controller local setting 192
- Si37 701 field setting 192
- Test operation 181 192
- The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller furthermore operations such as remote controller on off can be limited in accordance with the combination conditions refer to information in the next page central remote controller is normally available for operations except when centralized monitor is connected 192
- Timer operation possible by remote controller used when you want to turn on off by remote controller during set time and you do not want to start operation by central remote controller when time of system start is programmed 192
- Twenty modes consisting of combinations of the following five operation modes with temperature and operation mode setting by remote controller can be set and displayed by operation modes 0 through 19 192
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 193
- Factory setting 193
- 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 193
- Field setting from outdoor unit 194
- 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 170 onward 194
- For setting items of 1 refer to detailed information provided on page 1 92 onward 195
- 1 factory setting of initial pc board do not make any changes in all factory settings of the dip switches on the control pc board 196
- Caution 196
- Dip switch detail 196
- Dip switch setting after changing the main pc board a1p to spare parts pc board after the replacement by the spare pc board be sure to make settings shown below when you change the main pc board a1p to spare parts pc board please carry out the following setting 196
- Domestic japan overseas general europe 196
- For detail of the setting procedure refer to information on the following pages while the pc board 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 196
- Initial conditions of dip switches 196
- Make the following settings according to models of outdoor units all models are set to off at factory 196
- Off off on 196
- Off on off 196
- Setting by dip switches 196
- 2 3 4 ds1 1 2 3 4 ds2 197
- Application model allocation 197
- Detail of ds1 1 4 ds2 1 4 setting for overseas general 197
- Ds1 ds2 197
- Factory set represents the position of switches 197
- Field setting si37 701 197
- For europe 197
- General overseas 197
- Heat recovery 10hp reyq10py1 set ds2 1 to on 197
- Heat recovery 10hp reyq10py1b set ds1 4 to on 197
- Heat recovery 12hp reyq12py1 set ds2 1 and ds2 2 to on 197
- Heat recovery 12hp reyq12py1b set ds1 4 and ds2 2 to on 197
- Heat recovery 14hp reyq14py1 set ds1 3 ds2 1 and ds2 2 to on 197
- Heat recovery 14hp reyq14py1b set ds1 3 ds1 4 and ds2 2 to on 197
- Heat recovery 16hp reyq16py1 set ds1 3 ds2 1 and ds2 3 to on 197
- Heat recovery 16hp reyq16py1b set ds1 3 ds1 4 and ds2 3 to on 197
- Heat recovery 8hp reyq8py1 set ds2 1 and ds2 3 to on 197
- Heat recovery 8hp reyq8py1b set ds1 4 and ds2 3 to on 197
- Setting method represents the position of switches 197
- Single use 197
- Test operation 197
- 2 3 4 ds1 1 2 3 4 ds2 198
- Allocation 198
- Application model setting method represents the position of switches 198
- Ds1 ds2 198
- Factory set represents the position of switches 198
- For europe 198
- General overseas 198
- Heat recovery 10hp reyq10py1 set ds1 4 and ds2 2 to on 198
- Heat recovery 10hp reyq10py1b set ds1 3 and ds2 2 to on 198
- Heat recovery 12hp reyq12py1 set ds1 4 and ds2 2 to on 198
- Heat recovery 12hp reyq12py1b set ds1 3 and ds2 2 to on 198
- Heat recovery 14hp reyq14py1 set ds1 4 ds2 1 and ds2 4 to on 198
- Heat recovery 14hp reyq14py1b set ds1 3 ds2 1 and ds2 4 to on 198
- Heat recovery 16hp reyq16py1 set ds1 4 ds2 1 and ds2 3 to on 198
- Heat recovery 16hp reyq16py1b set ds1 3 ds2 1 and ds2 3 to on 198
- Heat recovery 8hp reyq8py1 set ds1 4 and ds2 2 to on 198
- Heat recovery 8hp reyq8py1b set ds1 3 and ds2 2 to on 198
- Si37 701 field setting 198
- Single use 198
- Test operation 187 198
- Allocation 199
- Application model 199
- Field setting si37 701 199
- For europe 199
- General overseas 199
- Heat recovery 10hp remq10py1 199
- Heat recovery 10hp remq10py1b 199
- Heat recovery 12hp remq12py1 199
- Heat recovery 12hp remq12py1b 199
- Heat recovery 14hp remq14py1 199
- Heat recovery 14hp remq14py1b 199
- Heat recovery 16hp remq16py1 199
- Heat recovery 16hp remq16py1b 199
- Heat recovery 8hp remq8py1 199
- Heat recovery 8hp remq8py1b 199
- Multiple type 199
- Set ds1 4 and ds2 4 to on 199
- Set ds1 4 ds2 2 and ds2 3 to on 199
- Set ds1 4 ds2 2 and ds2 4 to on 199
- Set ds1 4 ds2 2 ds2 3 and ds2 4 to on 199
- Set ds1 4 ds2 3 and ds2 4 to on 199
- Set ds2 1 and ds2 4 to on 199
- Set ds2 1 ds2 2 and ds2 3 to on 199
- Set ds2 1 ds2 2 and ds2 4 to on 199
- Set ds2 1 ds2 2 ds2 3 and ds2 4 to on 199
- Set ds2 1 ds2 3 and ds2 4 to on 199
- Setting method represents the position of switches 199
- Test operation 199
- Setting by push button switches 200
- Field setting si37 701 201
- Mode changing procedure 2 201
- Test operation 201
- 7 8 7 7 7 7 202
- A setting mode 1 202
- Si37 701 field setting 202
- Test operation 191 202
- 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 202
- B setting mode 2 203
- Bs5 rewiring 204
- The numbers in the no column represent the number of times to press the set bs2 button 204
- 1 number of indoor units connected used to make setting of the number of indoor units connected to an out door unit 2 number of outdoor units connected used to make setting of the number of outdoor units connected to diii net that is one of the communication lines 3 number of outdoor units connected used to make setting of the number of outdoor units connected to diii net that is one of the communication lines 4 number of indoor units used to make setting of the number of indoor units connected to diii net that is one of the communication lines only available for vrv indoor units 5 number of terminal units used to make setting of the number of indoor units connected to diii net that is one of the communication lines only available for vrv indoor units 207
- 7 7 7 7 7 207
- 7 7 7 7 8 207
- 7 7 7 8 7 207
- 7 7 7 8 8 207
- 7 7 8 7 7 207
- 7 7 8 7 8 207
- 7 7 8 8 7 207
- 7 7 8 8 8 207
- 7 8 7 7 7 207
- 7 8 7 7 8 207
- 7 8 7 8 7 207
- 7 8 7 8 8 207
- 7 8 8 7 7 207
- 7 8 8 7 8 207
- 7 8 8 8 7 207
- 7 8 8 8 8 207
- 8 7 7 7 7 207
- 8 7 8 7 7 207
- 8 7 8 7 8 207
- 8 7 8 8 7 207
- 8 8 7 7 8 207
- C monitor mode 207
- Field setting si37 701 207
- Test operation 207
- The numbers in the no column represent the number of times to press the set bs2 button 207
- 7 7 7 7 7 208
- 7 7 7 7 8 208
- 7 7 7 7 9 208
- 7 7 7 8 7 208
- 7 7 7 9 7 208
- 7 7 8 7 7 208
- 7 7 9 7 7 208
- 7 8 7 7 7 208
- Data such as addresses and number of units is expressed as binary numbers the two ways of expressing are as follows 208
- See the preceding page for a list of data etc for no 0 25 208
- Setting item 0 display contents of number of units for various settings 208
- The address for no 12 is 0101 the address for no 13 is 0110 and the combination of the two is 01010110 binary number which translates to 64 16 4 2 86 base 10 number in other words the number of terminal block is 86 208
- The address is 010110 binary number which translates to 16 4 2 22 base 10 number in other words the address is 22 208
- The no 1 cool heat unified address is expressed as a binary number consisting of the lower 6 digits 0 63 208
- The number of terminal blocks for no 12 and 13 is expressed as an 8 digit binary number which is the combination of four upper and four lower digits for no 12 and 13 respectively 0 128 in 208
- Cool heat mode switching 209
- Example of connecting transmission wiring connect the transmission wirings as shown in the fig 1 209
- Example of transmission line connection 209
- Set cool heat separately for each bs unit by cool heat selector 209
- Set remote controller change over switch ss1 ss2 as following 209
- When using cool heat selector connect to the terminal a b and c on the ec of the electric parts box 209
- When using cool heat selector turn this switch to the bs side 209
- Setting of low noise operation and demand operation 210
- Field setting si37 701 211
- Image of operation in the case of a 211
- Image of operation in the case of a and b 211
- Image of operation in the case of b 211
- Test operation 211
- A when the demand operation is carried out by external instructions with the use of the external control adapter for outdoor unit 1 connect the external adapter 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 212
- B when the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant 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 212
- Setting of demand operation by connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 212
- Field setting si37 701 213
- Image of operation in the case of a 213
- Image of operation in the case of a and b 213
- Image of operation in the case of b 213
- Test operation 213
- Setting of refrigerant recovery mode 216
- Check operation detail 217
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 217
- Operating procedure 217
- Press mode button bs1 once and reset setting mode 2 217
- Setting of vacuuming mode 217
- Use the vacuum pump to perform vacuuming operation 217
- 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 217
- Emergency operation 218
- Ddisabling the outdoor unit 3 from operating set no 40 of setting mode 2 to disable outdoor unit 1 operation 219
- Disabling the compressor 2 on the left side from operating set no 39 of setting mode 2 to disable compressor 2 operation 219
- Disabling the outdoor unit 1 to operate set no 38 of setting mode 2 to disable outdoor unit 1 operation 219
- Disabling the outdoor unit 2 from operating set no 39 of setting mode 2 to disable outdoor unit 2 operation 219
- Field setting si37 701 219
- 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 219
- Test operation 219
- Part 6 troubleshooting 220
- Symptom based troubleshooting 12 2 troubleshooting by remote controller 15 220
- Troubleshooting by indication on the remote controller 30 220
- Troubleshooting op central remote controller 26 221
- Troubleshooting op unified on off controller 31 221
- Symptom based troubleshooting 223
- Inspection mode 226
- Local setting mode service mode 226
- Normal mode 226
- Test operation mode 226
- The following modes can be selected by using the inspection test operation button on the remote control 226
- The inspection test button 226
- Troubleshooting by remote controller 226
- Self diagnosis by wired remote controller 227
- Self diagnosis by wireless remote controller 228
- The lower digit of the code changes as shown below when the up and down buttons are pressed 229
- Inspection mode 231
- 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 231
- Troubleshooting 231
- Troubleshooting by remote controller si37 701 231
- Remote controller service mode 232
- Remote controller self diagnosis function 234
- Test run mode 234
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 236
- Detail description on next page 237
- Malfunction code indication by outdoor unit pc board 237
- Push the mode bs1 button and returns to setting mode 1 237
- Push the return bs3 button and switches to the initial status of monitor mode 237
- Push the return bs3 button once to display first digit of malfunction code 237
- Push the set bs2 button and set the led display to a setting item 237
- Push the set bs2 button once to display malfunction location 237
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 237
- Push the set bs2 button once to display second digit of malfunction code 237
- Refer page 196 for monitor mode 237
- To enter the monitor mode push the mode bs1 button when in setting mode 1 237
- Troubleshooting 237
- Troubleshooting by remote controller si37 701 237
- Si37 701 troubleshooting by remote controller 238
- Troubleshooting 227 238
- Detail description on next page 239
- Push the mode bs1 button and returns to setting mode 1 239
- Push the return bs3 button and switches to the initial status of monitor mode 239
- Push the return bs3 button once to display first digit of malfunction code 239
- Push the set bs2 button and set the led display to a setting item 239
- Push the set bs2 button once to display malfunction location 239
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 239
- Push the set bs2 button once to display second digit of malfunction code 239
- Refer page 196 for monitor mode 239
- To enter the monitor mode push the mode bs1 button when in setting mode 1 239
- Troubleshooting 239
- Troubleshooting by remote controller si37 701 239
- Si37 701 troubleshooting by remote controller 240
- Troubleshooting 229 240
- A0 indoor unit error of external protection device 241
- Actuation of external protection device 241
- Applicable models all indoor unit models 241
- Defect of indoor unit pc board 241
- Detect open or short circuit between external input terminals in indoor unit 241
- Improper field set 241
- Malfunction decision conditions 241
- Method of malfunction detection 241
- Remote controller display 241
- Supposed causes 241
- Troubleshooting 241
- Troubleshooting by indication on the remote controller 241
- When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 241
- A1 indoor unit pc board defect 242
- A3 indoor unit malfunction of drain level control system s1l 243
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 244
- Si37 701 troubleshooting by indication on the remote controller 244
- Troubleshooting 244
- Troubleshooting 233 244
- A6 indoor unit fan motor m1f lock overload 245
- Applicable models all indoor units 245
- Detection by failure of signal for detecting number of turns to come from the fan motor 245
- Disconnected or faulty wiring between fan motor and pc board 245
- Fan motor lock 245
- Malfunction decision conditions 245
- Method of malfunction detection 245
- Remote controller display 245
- Supposed causes 245
- Troubleshooting 245
- Troubleshooting by indication on the remote controller si37 701 245
- When number of turns can t be detected even when output voltage to the fan is maximum 245
- A7 indoor unit malfunction of swing flap motor m1s 246
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 247
- Troubleshooting 247
- Troubleshooting by indication on the remote controller si37 701 247
- A9 electronic expansion valve malfunction dust clogging 248
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 249
- Troubleshooting 249
- Troubleshooting by indication on the remote controller si37 701 249
- A9 indoor unit malfunction of electronic expansion valve coil 250
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 251
- Troubleshooting 251
- Troubleshooting by indication on the remote controller si37 701 251
- Af indoor unit drain level above limit 252
- Aj indoor unit malfunction of capacity determination device 253
- Applicable models all indoor unit models 254
- C4 indoor unit malfunction of thermistor r2t for heat exchanger 254
- Defect of indoor unit pc board 254
- Defect of thermistor r2t for liquid pipe 254
- Malfunction decision conditions 254
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 254
- Method of malfunction detection 254
- Refer to thermistor resistance temperature characteristics table on p405 254
- Remote controller display 254
- Si37 701 troubleshooting by indication on the remote controller 254
- Supposed causes 254
- Troubleshooting 254
- Troubleshooting 243 254
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 254
- Applicable models all indoor unit models 255
- C5 indoor unit malfunction of thermistor r3t for gas pipes 255
- Defect of indoor unit pc board 255
- Defect of indoor unit thermistor r3t for gas pipe 255
- Malfunction decision conditions 255
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 255
- Method of malfunction detection 255
- Refer to thermistor resistance temperature characteristics table on p405 255
- Remote controller display 255
- Supposed causes 255
- Troubleshooting 255
- Troubleshooting by indication on the remote controller si37 701 255
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 255
- Applicable models aii indoor unit models 256
- C9 indoor unit malfunction of thermistor r1t for suction air 256
- Defect of indoor unit pc board 256
- Defect of indoor unit thermistor r1t for air inlet 256
- Malfunction decision conditions 256
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 256
- Method of malfunction detection 256
- Refer to thermistor resistance temperature characteristics table on p405 256
- Remote controller display 256
- Si37 701 troubleshooting by indication on the remote controller 256
- Supposed causes 256
- Troubleshooting 256
- Troubleshooting 245 256
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 256
- Cj indoor unit malfunction of thermostat sensor in remote controller 257
- E1 outdoor unit pc board defect 258
- E3 outdoor unit actuation of high pressure switch 259
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on p407 2 make measurement of voltage of the pressure sensor 260
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 260
- Si37 701 troubleshooting by indication on the remote controller 260
- Troubleshooting 260
- Troubleshooting 249 260
- E4 outdoor unit actuation of low pressure sensor 261
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on p407 2 make measurement of voltage of the pressure sensor 262
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 262
- Si37 701 troubleshooting by indication on the remote controller 262
- Troubleshooting 262
- Troubleshooting 251 262
- E5 outdoor unit inverter compressor motor lock 263
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 264
- Si37 701 troubleshooting by indication on the remote controller 264
- Troubleshooting 264
- Troubleshooting 253 264
- Abnormal case 265
- Applicable models reyq8p 48p 265
- Closed stop value 265
- Detects the overcurrent with current sensor ct 265
- E6 outdoor unit std compressor motor overcurrent lock 265
- Faulty compressor 265
- Faulty current sensor a6p a7p 265
- Faulty magnetic switch 265
- Improper power voltage 265
- Malfunction decision conditions 265
- Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 265
- Method of malfunction detection 265
- Obstacles at the air outlet 265
- One of the possible factors may be chattering due to rough mgs contact 265
- Remote controller display 265
- Supposed causes 265
- The current sensor value is 0 during std compressor operation 265
- The current sensor value is more than 15 a during std compressor stop 265
- Troubleshooting 265
- Troubleshooting by indication on the remote controller si37 701 265
- V unit 15 a 265
- E7 outdoor unit malfunction of outdoor unit fan motor 266
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 267
- Troubleshooting 267
- Troubleshooting by indication on the remote controller si37 701 267
- Si37 701 troubleshooting by indication on the remote controller 268
- Troubleshooting 268
- Troubleshooting 257 268
- E9 outdoor unit malfunction of moving part of electronic expansion valve y1e y5e 269
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 270
- Si37 701 troubleshooting by indication on the remote controller 270
- Troubleshooting 270
- Troubleshooting 259 270
- F3 outdoor unit abnormal discharge pipe temperature 271
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 272
- Refer to thermistor resistance temperature characteristics table on p405 272
- Si37 701 troubleshooting by indication on the remote controller 272
- Troubleshooting 272
- Troubleshooting 261 272
- F6 outdoor unit refrigerant overcharged 273
- H7 outdoor unit abnormal outdoor fan motor signal 276
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 277
- Troubleshooting 277
- Troubleshooting by indication on the remote controller si37 701 277
- Applicable models reyq8p 48p 278
- Defect of outdoor unit pc board a1p 278
- Defect of thermistor r1t for outdoor air 278
- Defective thermistor connection 278
- H9 outdoor unit malfunction of thermistor r1t for outdoor air 278
- Malfunction decision conditions 278
- Malfunction is detected from the temperature detected by the outdoor air thermistor 278
- Method of malfunction detection 278
- Refer to thermistor resistance temperature characteristics table on p405 278
- Remote controller display 278
- Si37 701 troubleshooting by indication on the remote controller 278
- Supposed causes 278
- Troubleshooting 278
- Troubleshooting 267 278
- When the outside air temperature thermistor has short circuit or open circuit 278
- Applicable models reyq8p 48p 279
- Defective compressor 279
- Faulty current sensor a6p a8p 279
- Faulty outdoor unit pc board 279
- J2 outdoor unit current sensor malfunction 279
- Malfunction decision conditions 279
- Malfunction is detected according to the current value detected by current sensor 279
- Method of malfunction detection 279
- Remote controller display 279
- Supposed causes 279
- Troubleshooting 279
- Troubleshooting by indication on the remote controller si37 701 279
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 279
- Applicable models reyq8p 48p 280
- Defect of outdoor unit pc board a1p 280
- Defect of thermistor connection 280
- Defect of thermistor r31t r32t r33t for outdoor unit discharge pipe 280
- J3 outdoor unit malfunction of discharge pipe thermistor r31 32t 33t 280
- Malfunction decision conditions 280
- Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 280
- Method of malfunction detection 280
- Refer to thermistor resistance temperature characteristics table on p405 280
- Remote controller display 280
- Si37 701 troubleshooting by indication on the remote controller 280
- Supposed causes 280
- The alarm indicator is displayed when the fan is being used also 280
- Troubleshooting 280
- Troubleshooting 269 280
- When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 280
- J4 outdoor unit malfunction of temperature sensor for heat exchanger gas r2t or r11t 281
- J5 outdoor unit malfunction of thermistor r8t or r10t for suction pipe 282
- Applicable models reyq8p 48p 283
- Defect of outdoor unit pc board a1p 283
- Defect of thermistor connection 283
- Defect of thermistor r4t or r12t for outdoor unit coil 283
- J6 outdoor unit malfunction of thermistor r4t or r12t for outdoor unit heat exchanger 283
- Malfunction decision conditions 283
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 283
- Method of malfunction detection 283
- Refer to thermistor resistance temperature characteristics table on p405 283
- Remote controller display 283
- Supposed causes 283
- Troubleshooting 283
- Troubleshooting by indication on the remote controller si37 701 283
- When a short circuit or an open circuit in the heat exchange thermistor is detected 283
- J7 outdoor unit malfunction of liquid pipe thermistor 1 r6t r9t or r14t 284
- Applicable models reyq8p 48p 285
- Defect of thermistor connection 285
- Faulty liquid pipe thermistor 2 r7t or r15t 285
- Faulty outdoor unit pc board 285
- J8 outdoor unit malfunction of liquid pipe thermistor 2 r7t or r15t 285
- Malfunction decision conditions 285
- Malfunction is detected according to the temperature detected by liquid pipe thermistor 285
- Method of malfunction detection 285
- Refer to thermistor resistance temperature characteristics table on p405 285
- Remote controller display 285
- Supposed causes 285
- Troubleshooting 285
- Troubleshooting by indication on the remote controller si37 701 285
- When the liquid pipe thermistor is short circuited or open 285
- Applicable models reyq8p 48p 286
- Faulty outdoor unit pc board 286
- Faulty subcooling heat exchanger gas pipe thermistor r5t or r13t 286
- J9 outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t or r13t 286
- Malfunction decision conditions 286
- Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 286
- Method of malfunction detection 286
- Refer to thermistor resistance temperature characteristics table on p405 286
- Remote controller display 286
- Si37 701 troubleshooting by indication on the remote controller 286
- Supposed causes 286
- Troubleshooting 286
- Troubleshooting 275 286
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 286
- Ja outdoor unit malfunction of high pressure sensor 287
- Refer to pressure sensor pressure voltage characteristics table on p407 288
- Voltage measurement point 288
- Jc outdoor unit malfunction of low pressure sensor 289
- Refer to pressure sensor pressure voltage characteristics table on p407 290
- Voltage measurement point 290
- Applicable models reyq8p 48p 291
- Current sensor failure 291
- Drive circuit failure 291
- Inverter pc board a2p 291
- Ipm failure 291
- L1 outdoor unit defective inverter pc board 291
- Malfunction decision conditions 291
- Malfunction is detected based on the current value during waveform output before starting compressor malfunction is detected based on the value from current sensor during synchronous operation when starting the unit 291
- Method of malfunction detection 291
- Overcurrent ocp flows during waveform output malfunction of current sensor during synchronous operation ipm failure 291
- Remote controller display 291
- Supposed causes 291
- Troubleshooting 291
- Actuation of fin thermal actuates above 93 c 292
- Applicable models reyq8p 48p 292
- Defect of fin thermistor 292
- Defect of inverter pc board 292
- Fin temperature is detected by the thermistor of the radiation fin 292
- L4 outdoor unit malfunction of inverter radiating fin temperature rise 292
- Malfunction decision conditions 292
- Method of malfunction detection 292
- Remote controller display 292
- Si37 701 troubleshooting by indication on the remote controller 292
- Supposed causes 292
- Troubleshooting 292
- Troubleshooting 281 292
- When the temperature of the inverter radiation fin increases above 93 c 292
- Inverter pc board for compressor 293
- Refer to thermistor resistance temperature characteristics table on p405 293
- L5 outdoor unit momentary overcurrent of inverter compressor 294
- Troubleshooting 295
- Troubleshooting by indication on the remote controller si37 701 295
- Troubleshooting compressor inspection 295
- L8 outdoor unit momentary overcurrent of inverter compressor 296
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 297
- Troubleshooting 297
- Troubleshooting by indication on the remote controller si37 701 297
- Troubleshooting output current check 297
- L9 outdoor unit inverter compressor starting failure 298
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 299
- Troubleshooting 299
- Troubleshooting by indication on the remote controller si37 701 299
- Si37 701 troubleshooting by indication on the remote controller 300
- Troubleshooting 300
- Troubleshooting 289 300
- Lc outdoor unit malfunction of transmission between inverter and control pc board 301
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 302
- Si37 701 troubleshooting by indication on the remote controller 302
- Troubleshooting 302
- Troubleshooting 291 302
- Troubleshooting 303
- Troubleshooting by indication on the remote controller si37 701 303
- Applicable models reyq8p 48p 304
- Defect of inverter pc board 304
- Defect of k2 relay in inverter pc board 304
- Defect of main circuit capacitor 304
- Imbalance in supply voltage is detected in pc board imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter consequently the increased ripple is detected 304
- Improper main circuit wiring 304
- Malfunction decision conditions 304
- Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button when the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minutes 304
- Method of malfunction detection 304
- Open phase 304
- P1 outdoor unit inverter over ripple protection 304
- Remote controller display 304
- Si37 701 troubleshooting by indication on the remote controller 304
- Supposed causes 304
- Troubleshooting 304
- Troubleshooting 293 304
- Voltage imbalance between phases 304
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 304
- Applicable models reyq8p 48p 305
- Defect of inverter pc board 305
- Defect of radiator fin temperature sensor 305
- Malfunction decision conditions 305
- Malfunction is not decided while the unit operation is continued p4 will be displayed by pressing the inspection button 305
- Method of malfunction detection 305
- P4 outdoor unit malfunction of inverter radiating fin temperature rise sensor 305
- Remote controller display 305
- Resistance of radiation fin thermistor is detected when the compressor is not operating 305
- Supposed causes 305
- Troubleshooting 305
- Troubleshooting by indication on the remote controller si37 701 305
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 305
- Inverter pc board for compressor 306
- Refer to thermistor resistance temperature characteristics table on p405 306
- Applicable models reyq8p 48p 307
- Faulty or no field setting after replacing main pc board 307
- Malfunction decision conditions 307
- Method of malfunction detection 307
- Mismatching of type of pc board 307
- Pj outdoor unit faulty field setting after replacing main pc board or faulty combination of pc board 307
- Remote controller display 307
- Supposed causes 307
- The faulty or no field setting after replacing main pc board or faulty pc board combination is detected through communications with the inverter 307
- Troubleshooting 307
- Troubleshooting by indication on the remote controller si37 701 307
- Whether or not the field setting or the type of the pc board is correct through the communication date is judged 307
- Uo outdoor unit gas shortage alert 308
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 309
- Troubleshooting 309
- Troubleshooting by indication on the remote controller si37 701 309
- Applicable models reyq8p 48p 310
- Defect of outdoor pc board a1p 310
- Malfunction decision conditions 310
- Method of malfunction detection 310
- Power supply open phase 310
- Power supply reverse phase 310
- Remote controller display 310
- Si37 701 troubleshooting by indication on the remote controller 310
- Supposed causes 310
- The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 310
- Troubleshooting 310
- Troubleshooting 299 310
- U1 reverse phase open phase 310
- When a significant phase difference is made between phases 310
- U2 outdoor unit power supply insufficient or instantaneous failure 311
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 312
- Si37 701 troubleshooting by indication on the remote controller 312
- Troubleshooting 312
- Troubleshooting 301 312
- Troubleshooting 313
- Troubleshooting by indication on the remote controller si37 701 313
- Applicable models reyq8p 48p 314
- Check operation is executed or not 314
- Check operation is not executed 314
- Malfunction decision conditions 314
- Malfunction is decided when the unit starts operation without check operation 314
- Method of malfunction detection 314
- Remote controller display 314
- Si37 701 troubleshooting by indication on the remote controller 314
- Supposed causes 314
- Troubleshooting 314
- Troubleshooting 303 314
- U3 outdoor unit check operation not executed 314
- U4 malfunction of transmission between indoor units 315
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 316
- Si37 701 troubleshooting by indication on the remote controller 316
- Troubleshooting 316
- Troubleshooting 305 316
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 317
- Troubleshooting 317
- Troubleshooting by indication on the remote controller si37 701 317
- Applicable models all models of indoor units 318
- Connection of two main remote controllers when using 2 remote controllers 318
- Defect of indoor unit pc board 318
- Defect of remote controller pc board 318
- In case of controlling with 2 remote controller check the system using microcomputer is signal transmission between indoor unit and remote controller main and sub is normal 318
- Malfunction decision conditions 318
- Malfunction of indoor unit remote controller transmission 318
- Malfunction of transmission caused by noise 318
- Method of malfunction detection 318
- Normal transmission does not continue for specified period 318
- Remote controller display 318
- Si37 701 troubleshooting by indication on the remote controller 318
- Supposed causes 318
- Troubleshooting 318
- Troubleshooting 307 318
- U5 indoor unit malfunction of transmission between remote controller and indoor unit 318
- U7 outdoor unit transmission failure across outdoor units 319
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 320
- Si37 701 troubleshooting by indication on the remote controller 320
- Troubleshooting 320
- Troubleshooting 309 320
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 321
- Troubleshooting 321
- Troubleshooting by indication on the remote controller si37 701 321
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 322
- Si37 701 troubleshooting by indication on the remote controller 322
- Troubleshooting 322
- Troubleshooting 311 322
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 323
- Troubleshooting 323
- Troubleshooting by indication on the remote controller si37 701 323
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 324
- Si37 701 troubleshooting by indication on the remote controller 324
- Troubleshooting 324
- Troubleshooting 313 324
- Applicable models all models of indoor units 325
- Connection between sub remote controllers 325
- Defect of remote controller pc board 325
- In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal 325
- Malfunction decision conditions 325
- Malfunction of transmission between main and sub remote controller 325
- Method of malfunction detection 325
- Normal transmission does not continue for specified period 325
- Remote controller display 325
- Supposed causes 325
- Troubleshooting 325
- Troubleshooting by indication on the remote controller si37 701 325
- U8 indoor unit malfunction of transmission between main and sub remote controllers 325
- U9 indoor unit malfunction of transmission between indoor and outdoor units in the same system 326
- Ua improper combination of indoor and outdoor units indoor units and remote controller 327
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 328
- Si37 701 troubleshooting by indication on the remote controller 328
- Troubleshooting 328
- Troubleshooting 317 328
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 329
- Troubleshooting 329
- Troubleshooting by indication on the remote controller si37 701 329
- Uc address duplication of centralized controller 330
- Ue malfunction of transmission between centralized controller and indoor unit 331
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 332
- Si37 701 troubleshooting by indication on the remote controller 332
- Troubleshooting 332
- Troubleshooting 321 332
- Troubleshooting 333
- Troubleshooting by indication on the remote controller si37 701 333
- Applicable models all models of indoor units reyq8p 48p 334
- Defect of indoor unit pc board 334
- Failure to execute check operation 334
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 334
- Malfunction decision conditions 334
- Method of malfunction detection 334
- Note wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour 334
- On check operation the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature 334
- Remote controller display 334
- Si37 701 troubleshooting by indication on the remote controller 334
- Stop valve is left in closed 334
- Supposed causes 334
- The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation 334
- Troubleshooting 334
- Troubleshooting 323 334
- Uf system is not set yet 334
- Uh malfunction of system refrigerant system address undefined 335
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 336
- Si37 701 troubleshooting by indication on the remote controller 336
- Troubleshooting 336
- Troubleshooting 325 336
- M1 pc board defect 337
- Troubleshooting op central remote controller 337
- Applicable models central remote controller intelligent touch controller schedule timer 338
- Defect of pc board of optional controllers for centralized control 338
- Detect the malfunction according to diii net transmission data the system will be automatically reset 338
- M8 malfunction of transmission between optional controllers for centralized control 338
- Malfunction decision conditions 338
- Malfunction of transmission between optional controllers for centralized control 338
- Method of malfunction detection 338
- Remote controller display 338
- Supposed causes 338
- Troubleshooting 338
- 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 338
- Ma improper combination of optional controllers for centralized control 339
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 340
- Si37 701 troubleshooting op central remote controller 340
- Troubleshooting 340
- Troubleshooting 329 340
- Address duplication of centralized controller 341
- Applicable models central remote controller intelligent touch controller schedule timer 341
- Detect the malfunction according to diii net transmission data 341
- Malfunction decision conditions 341
- Mc address duplication improper setting 341
- Method of malfunction detection 341
- Remote controller display 341
- Supposed causes 341
- Troubleshooting 341
- Two or more units of central remote controllers and intelligent touch controllers are connected and all of them are set to master unit central setting or slave unit central setting 341
- Two units of schedule timers are connected 341
- Operation lamp blinks 342
- Troubleshooting op unified on off controller 342
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 343
- Troubleshooting 343
- Troubleshooting op unified on off controller si37 701 343
- Display under centralized control blinks repeats single blink 344
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 345
- Troubleshooting 345
- Troubleshooting op unified on off controller si37 701 345
- Si37 701 troubleshooting op unified on off controller 346
- Troubleshooting 335 346
- Applicable models unified on off controller 347
- Central control address group no is not set for indoor unit 347
- Detect the malfunction according to diii net transmission data 347
- Display under centralized control blinks repeats double blink 347
- Improper control range setting switch 347
- Improper wiring of transmission wiring 347
- Malfunction decision conditions 347
- Method of malfunction detection 347
- Remote controller display 347
- Supposed causes 347
- Troubleshooting 347
- Troubleshooting op unified on off controller si37 701 347
- Under centralized control repeats double blink 347
- When no central control addresses are set to indoor units when no indoor units are connected within the control range 347
- 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 348
- 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 348
- Si37 701 troubleshooting op unified on off controller 348
- Troubleshooting 337 348
- Check 3 check the factors of overheat operation identify the defective points referring to the failure factor analysis fta as follows 349
- Troubleshooting 349
- Troubleshooting op unified on off controller si37 701 349
- Check 4 power transistor check 350
- Pc board and circuit diagram 350
- Point of measurement and judgment criteria 350
- Preparation 350
- Si37 701 troubleshooting op unified on off controller 350
- Troubleshooting 339 350
- U v w n3 350
- Check 5 check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 351
- Troubleshooting 351
- Troubleshooting op unified on off controller si37 701 351
- Check 6 check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 352
- Si37 701 troubleshooting op unified on off controller 352
- Troubleshooting 341 352
- 1 unit 1 unit 1 provided not provided 354
- 1 unit not provided 354
- 1 unit provided 354
- Central equipment connection pattern setting of master unit central setting connector 2 354
- 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 central 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 pc board 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 354
- Intelligent touch controller 354
- Pattern 354
- Si37 701 troubleshooting op unified on off controller 354
- Troubleshooting 343 354
- Unit not provided 354
- Check 9 master slave unit setting table combination of intelligent touch controller and central remote controller 355
- Troubleshooting 355
- Troubleshooting op unified on off controller si37 701 355
- 1 superheated degree control in cooling operation is exercised with the indoor unit motorized valve refer to information on p143 2 superheated degree control in heating operation is exercised with the outdoor unit motorized valve ev1 refer to information on p108 3 guideline of superheated degree to judge as wet operation suction gas superheated degree not more than 3 c 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 356
- Check 10 check for causes of wet operation referring to the fault tree analysis fta shown below identify faulty points 356
- Degraded evaporation capacity 356
- Dirty evaporator 356
- Dirty filter 356
- Faulty crankcase heater 356
- Faulty fan motor 356
- Faulty indoor unit gas pipe thermistor 356
- Faulty indoor unit liquid pipe thermistor 356
- Faulty valve body 356
- Faulty valve coil 356
- Including faulty capacity setting 356
- Obstacles 356
- Overcharge of refrigerant 356
- Refrigerant accumulation 356
- Si37 701 troubleshooting op unified on off controller 356
- Troubleshooting 345 356
- 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 judgment refer to information provided below 357
- Cooling 357
- 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 357
- Frequency 357
- Heating 357
- High pressure 357
- Low pressure 357
- Troubleshooting 357
- Troubleshooting op unified on off controller si37 701 357
- 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 judgment refer to information provided below 358
- Cooling 358
- 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 358
- Frequency 358
- Heating 358
- High pressure 358
- Low pressure 358
- Si37 701 troubleshooting op unified on off controller 358
- Troubleshooting 347 358
- Check 14 list of inverter related malfunction codes 360
- Si37 701 troubleshooting op unified on off controller 360
- Troubleshooting 349 360
- Compressor overcurrent electronic thermal 1 361
- Current 361
- Heavy current part power transmission etc 361
- Malfunction codes related to compressor current 361
- Max control 361
- P4 l1 l4 u2 p1 pj e5 l9 361
- Troubleshooting 361
- Troubleshooting op unified on off controller si37 701 361
- Weak current part 361
- Example of connection r 410a type 01 7 thermistor resistance temperature characteristics 05 8 pressure sensor 07 9 method of checking the inverter s power transistors and diode modules 08 362
- List of electrical and functional parts 85 362
- Option list 96 362
- Part 7 appendix 362
- Piping diagrams 52 362
- Piping installation point 99 362
- Wiring diagrams for reference 61 362
- Outdoor unit 363
- Piping diagrams 363
- Reyq8p 10p 12py1 363
- Reyq14p 16py1 364
- Remq8py1 365
- Remq10py1 12py1 366
- Remq14py1 16py1 367
- Electronic expansion valve filter filter 368
- Flare connectio 368
- Flare connection 368
- Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 368
- Gas piping connection port 368
- Heat exchanger 368
- Indoor unit 368
- Liquid piping connection port 368
- Φ 15 or less attached piping above φ 19 368
- Refrigerant pipe connection port diameters 369
- Refrigerant pipe connection port diameters 370
- Bs unit 371
- Electronic expansion valve 371
- Filter filter 371
- Gas pipe connection port 371
- Liquid pipe connection port 371
- Refrigerant pipe connection port diameters 371
- Outdoor unit 372
- Reyq8 10 12py1 372
- Wiring diagrams for reference 372
- Reyq14 16py1 373
- Remq8py1 374
- Remq10 12py1 375
- Remq14p 16py1 376
- Field wiring 377
- Reyq8p 10p 12p 14p 16py1 377
- Reyq18p 20p 22p 24p 26p 28p 30p 32py1 378
- Reyq34p 36p 38p 40p 42p 44p 46p 48py1 379
- Fxcq20m 25m 32m 63mve 380
- Indoor unit 380
- Fxcq40m 50m 80m 125mve 381
- Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 382
- Fxzq20m 25m 32m 40m 50m8v1b 383
- Fxkq25ma 32ma 40ma 63mave 384
- Fxdq20p 25p 32p fxdq20na 25na 32na 40na 50na 63nave with drain pump 385
- Fxdq20p 25p 32p fxdq20n 25n 32n 40n 50n 63nvet without drain pump 386
- Appendix 387
- Fxdyq80m 100m 125m 145mv1 387
- Notes 1 387
- Pda0313 387
- Wiring diagrams for reference si37 701 387
- Fxdyq180m 200m 250mv1 388
- Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 389
- Fxmq40ma 50ma 63ma 80ma 100ma 125mave 390
- Fxmq200ma 250mave 391
- Fxhq32ma 63ma 100mave 392
- Fxaq20ma 25ma 32mave 40ma 50ma 63mave 393
- Fxlq20ma 25ma 32ma 40ma 50ma 63mave fxnq20ma 25ma 32ma 40ma 50ma 63mave 394
- Bs unit 395
- List of electrical and functional parts 396
- Outdoor unit 396
- Reyq8py1 12py1 396
- Reyq14py1 16py1 397
- Remq8py1 398
- Remq10py1 12py1 399
- Remq14py1 16py1 400
- Appendix 401
- C off 87 c on 401
- Indoor side 401
- Indoor unit 401
- List of electrical and functional parts si37 701 401
- Appendix 391 402
- Si37 701 list of electrical and functional parts 402
- Appendix 403
- List of electrical and functional parts si37 701 403
- Only for fxdq20 63n a ve fxdq20 32pve with drain pump type 403
- Appendix 393 404
- Si37 701 list of electrical and functional parts 404
- Appendix 405
- List of electrical and functional parts si37 701 405
- Appendix 395 406
- Si37 701 list of electrical and functional parts 406
- 1 wiring adaptor for electrical appendices 1 407
- 2 wiring adaptor for electrical appendices 2 407
- Adaptor for wiring 407
- Adaptors required to connect products other than those of the vrv system to the high speed diii net communication system adopted for the vrv system 407
- Appendix 407
- Brc1c62 407
- Brc1d61 407
- Central control adaptor kit 407
- Dcs301ba61 unified on off controller 2 407
- Dcs302ca61 central remote controller 1 407
- Dta102a52 interface adaptor for skyair series 4 407
- Dta103a51 wiring adaptor for other air conditioner 6 407
- Dta107a55 5 407
- Dta109a51 d net 407
- Expander adaptor 407
- External control adaptor for outdoor unit must be installed on indoor units 407
- Fixing plate for dta109a51 krp4a92 mounting plate 7 1 407
- For skyair fd y m fa fdy ka fdyb ka fvy p j a 407
- For uat y k a fd k 407
- Installation box for adaptor pc board 407
- Kek26 1 noise filter for electromagnetic interface use only 2 2 407
- Kjb212a electrical box with earth terminal 2 blocks 2 1 407
- Kjb311a electrical box with earth terminal 3 blocks 1 1 407
- Krcs01 1 407
- Note 1 installation box for adaptor must be procured on site 407
- Note 1 installation box is necessary for each adaptor marked 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 is necessary for second adaptor 6 installation box is necessary for each adaptor 407
- Operation control system optional accessories 407
- Option list 407
- Option list of controllers 407
- Option list si37 701 407
- Programmed time weekly schedule can be controlled by unified control for up to 64 groups of indoor units 128 units can turn units on off twice per day dst301ba61 schedule timer 3 407
- Remote controller 407
- Remote controller for hotel use concealed type 407
- Remote sensor 407
- Simplified remote controller exposed type 407
- System configuration 407
- To use any of the above optional controllers an appropriate adaptor must be installed on the product unit to be controlled 407
- Up to 1024 units can be centrally controlled in 64 different groups 407
- Up to 16 groups of indoor units 128 units can be turned on off individually or simultaneously and operation and malfunction can be displayed can be used in combination with up to 8 controllers 407
- Up to 64 groups of indoor units 128 units can be connected and on off temperature setting and monitoring can be accomplished individually or simultaneously connectable up to 2 controllers in one system 407
- Various pc boards 407
- Wired remote controller with weekly schedule timer 407
- Wireless h r 407
- Wiring restrictions max lengh 1 000m total wiring lengh 2 000m max number of branches 16 apply to each adaptor 407
- Appendix 397 408
- Building management system 408
- Installation box for adaptor must be procured on site 408
- Is a registered trade mark of echelon corporation 408
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 408
- Lonwork 408
- No part name model no function 408
- Si37 701 option list 408
- Appendix 409
- Option list si37 701 409
- Option lists outdoor unit 409
- Order products 409
- Reyq18 32py1 e 409
- Reyq34 48py1 e 409
- Reyq8 16py1 e 409
- Appendix 399 410
- In the case of 2m or less 410
- In the case of 2m or more 410
- Piping installation point 410
- Si37 701 piping installation point 410
- 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 410
- The projection part between multi connection piping kits 410
- 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 410
- The example of a wrong pattern 411
- 1 indicate the outdoor unit multi connection piping kit 2 in case of multi outdoor system re read outdoor unit to the first outdoor unit multi connection piping kit as seen from the indoor unit 412
- Actual and equivalent pipe length 412
- Actual pipe length 412
- Actual pipe length equivalent length 412
- Actual pipe length from first refrigerant branch kit either refnet joint or refnet header to indoor unit 40m note 2 example 8 b c d e s 40m 412
- Allowable length after the branch 412
- Between outdoor unit 2 and indoor unit 412
- Bold 3 pipes 412
- Branch with refnet joint branch with refnet joint and header branch with refnet header 412
- Bs unit 412
- Difference in height between outdoor unit and indoor unit h1 50m max 40m if the outdoor unit is below difference in height between adjacent indoor units h2 15m difference in height between adjacent outdoor units h3 5m 412
- Example 6 a b 165m 8 a m n p 165 412
- Example 6 b 40m 8 m n p 40m example 8 o 412
- Example 8 a o 412
- Example of connection connection of 8 indoor units 412
- Example of connection r 410a type 412
- First outdoor unit multi connection piping kit 412
- Indoor unit cool heat selection possible 412
- Indoor unit cooling only 412
- Indoor unit side 2 pipes 412
- M equvalent pipe length between outdoor unit 2 and indoor unit 190m note 1 412
- Multi outdoor system reyq 18 48 412
- Outdoor unit 412
- Outdoor unit outdoor unit 412
- Outdoor unit outdoor unit outdoor unit 412
- Outdoor unit side 3 pipes 412
- Pipe length between outdoor unit 2 and indoor unit 165m example 8 a b c d e s 165m 412
- Piping from bs unit to indoor unit or piping from refrigerant branch kit to indoor unit used as cooling only 412
- Piping from outdoor unit to bs unit 412
- Single outdoor system reyq 8 16 412
- Suction gas pipe hp lp gas pipe liquid pipe 412
- Suction gas pipe liquid pipe 412
- Thin 2 pipes 412
- Total piping length from outdoor unit 2 to all indoor unit 1000m actual pipe length from first outdoor unit multi connection piping kit to outdoor unit 10m equivalent pipe length from first outdoor unit multi connection piping kit to outdoor unit 13m 412
- Outdoor unit multi connection piping kit and refrigerant branch kit selection 413
- Pipe size selection 413
- 27 48 27 kg 414
- 50 0 6 1 0 8 3 0 2 156 0 59 20 0 22 1 2 3 0 414
- A b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p 1000 m 414
- A b c d e f g p a h 40 m 414
- A b u r c n s t o p 414
- B c d e f g p 90 m increase the pipe size of b c d e f g 414
- H i j p 40 m 414
- How to calculate the additional refrigerant to be charged 414
- If available on the site use this size otherwise it can not be increased 414
- Increase the pipe size as follows 414
- Indoor unit to the nearest branch kit 40 m 414
- Indoor units 1 8 414
- Outdoor unit refnet joint a g 414
- Required conditions example drawings 414
- Round off in units of 0 kg 414
- The difference between outdoor unit to the farthest indoor unit and outdoor unit to the nearest indoor unit 40 m 414
- The farthest indoor unit 8 the nearest indoor unit 1 414
- Φ 9 φ 12 φ 12 φ 15 φ 15 φ 19 φ 19 φ 22 φ 22 φ 25 φ 28 φ 31 φ 34 φ 38 414
- Appendix 405 416
- Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 416
- Outdoor unit for fin thermistor r1t 416
- Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 416
- Si37 701 thermistor resistance temperature characteristics 416
- Thermistor resistance temperature characteristics 416
- Appendix 417
- Outdoor unit thermistors for discharge pipe r3t r3 417
- Thermistor resistance temperature characteristics si37 701 417
- Pressure sensor 418
- Method of checking the inverter s power transistors and diode modules 419
- Diode module checking 420
- Power module checking 420
- When using the analog type of multiple tester make measurement in resistance measurement mode in the x1 420
- When using the digital type of multiple tester make measurement in diode check mode 420
- Part 8 422
- Part 8 precautions for new refrigerant r 410a 422
- Precautions for new refrigerant r 410a 422
- Precautions for new refrigerant r 410a 12 422
- About refrigerant r 410a 423
- 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 423
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 423
- Outline 423
- Precautions for new refrigerant r 410a 423
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 423
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 423
- Precautions for new refrigerant r 410a 413 424
- Si37 701 precautions for new refrigerant r 410a 424
- Thermodynamic characteristic of r 410a 424
- Refrigerant cylinders 425
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 426
- Copper tube material and thickness 426
- O soft annealed h hard drawn 426
- 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 426
- Service tools 426
- Tool compatibility 426
- 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 427
- Differences 2 change of dimension a 427
- Flaring tool 427
- Specifications 2 dimension a 427
- Unit mm 427
- Drawings flow charts 436
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