Daikin VRV IV+ Service Manual page 5

REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
2.3.53 H7-21-23-25 – Defective fan inverter PCB A7P ............................................................................................. 77
2.3.54 H7-22-24-26 – Defective fan inverter PCB A4P ............................................................................................. 78
2.3.55 H9-01-02-03 – Ambient temperature thermistor R1T abnormality ............................................................. 78
2.3.56 HA-00 – Defrost fail alarm.............................................................................................................................. 79
2.3.57 J3-16-22-28 – Discharge thermistor R21T open circuit................................................................................. 80
2.3.58 J3-17-23-29 – Discharge thermistor R21T short circuit................................................................................. 80
2.3.59 J3-18-24-30 – Discharge thermistor R22T open circuit................................................................................. 81
2.3.60 J3-19-25-31 – Discharge thermistor R22T short circuit................................................................................. 82
2.3.61 J3-47-49-51 – Compressor body thermistor R15T open circuit .................................................................... 83
2.3.62 J3-48-50-52 – Compressor body thermistor R15T short circuit.................................................................... 83
2.3.63 J3-56-57-58 – High discharge temperature................................................................................................... 84
2.3.64 J3-59-60-61 – Discharge thermistor crosswired............................................................................................ 85
2.3.65 J5-01-03-05 – Compressor suction thermistor R12T malfunction................................................................ 86
2.3.66 J5-18-19-20 – Suction temperature thermistor R10T abnormality .............................................................. 87
2.3.67 J6-01-02-03 – De–icer thermistor R11T abnormality .................................................................................... 87
2.3.68 J6-08-09-10 – Upper heat exchanger gas pipe thermistor R8T malfunction................................................ 88
2.3.69 J6-11-12-13 – Lower heat exchanger gas pipe thermistor R9T malfunction................................................ 89
2.3.70 J7-01-02-03 – Main liquid pipe thermistor R3T malfunction ........................................................................ 90
2.3.71 J7-06-07-08 – Liquid thermistor R7T abnormality......................................................................................... 90
2.3.72 J8-01-02-03 – Upper heat exchanger liquid temperature thermistor R4T abnormality .............................. 91
2.3.73 J8-08-09-10 – Lower heat exchanger liquid temperature thermistor R5T abnormality .............................. 92
2.3.74 J8-11-12-13 – Autocharge thermistor R14T abnormality.............................................................................. 93
2.3.75 J9-01-02-03 – Gas thermistor R6T abnormality............................................................................................. 93
2.3.76 J9-08-09-10 – Gas thermistor R6T abnormality............................................................................................. 94
2.3.77 J9-11-12-13 – Receiver gas thermistor R13T abnormality ............................................................................ 95
2.3.78 JA-06-08-10 – High pressure sensor S1NPH abnormality ............................................................................. 96
2.3.79 JA-07-09-11 – High pressure sensor S1NPH malfunction.............................................................................. 96
2.3.80 JC-06-08-10 – Low pressure sensor S1NPL abnormality ............................................................................... 97
2.3.81 JC-07-09-11 – Low pressure sensor S1NPL malfunction ............................................................................... 98
2.3.82 L1-01-07-11 – Inverter PCB A3P abnormality................................................................................................ 99
2.3.83 L1-02-08-12 – Inverter PCB A3P current detection primary circuit .............................................................. 99
2.3.84 L1-03-09-13 – Inverter PCB A3P current detection secondary circuit .......................................................... 100
2.3.85 L1-04-10-14 – Power transistor error on inverter PCB A3P .......................................................................... 101
2.3.86 L1-05-15-16 – Inverter PCB A3P hardware fault ........................................................................................... 102
2.3.87 L1-17-22-42 – Inverter PCB A6P abnormality................................................................................................ 103
2.3.88 L1-18-23-43 – Inverter PCB A6P current detection primary circuit .............................................................. 104
2.3.89 L1-19-24-44 – Inverter PCB A6P current detection secondary circuit .......................................................... 105
2.3.90 L1-20-25-45 – Power transistor error on inverter PCB A6P .......................................................................... 106
2.3.91 L1-21-26-46 – Inverter PCB A6P hardware fault ........................................................................................... 106
2.3.92 L1-28-32-34 – Fan inverter PCB A4P Eeprom error....................................................................................... 107
2.3.93 L1-29-33-35 – Fan inverter PCB A7P Eeprom error....................................................................................... 108
2.3.94 L1-36-38-40 – Inverter PCB A3P Eeprom error ............................................................................................. 109
2.3.95 L1-37-39-41 – Inverter PCB A6P Eeprom error ............................................................................................. 109
2.3.96 L1-47-49-51 – Inverter PCB A3P 16 V DC abnormal ...................................................................................... 110
2.3.97 L1-48-50-52 – Inverter PCB A6P 16 V DC abnormal ...................................................................................... 111
2.3.98 L2-01-02-03 – Power supply abnormality during test run ............................................................................ 112
2.3.99 L2-04-05-06 – Power supply abnormality during normal operation ............................................................ 113
2.3.100 L4-01-02-03 – Inverter PCB A3P high fin temperature.................................................................................. 114
2.3.101 L4-06-18-20 – Fan inverter PCB A4P high fin temperature........................................................................... 115
2.3.102 L4-07-19-21 – Fan inverter PCB A7P high fin temperature........................................................................... 116
2.3.103 L4-09-10-11 – Inverter PCB A6P high fin temperature.................................................................................. 117
2.3.104 L5-03-05-07 – Output overcurrent detection on inverter PCB A3P.............................................................. 119
2.3.105 L5-14-15-16 – Output overcurrent detection on inverter PCB A6P.............................................................. 120
2.3.106 L8-03-06-07 – Overcurrent on inverter PCB A3P except start-up................................................................. 121
2.3.107 L8-11-12-13 – Overcurrent on inverter PCB A6P except start-up................................................................. 122
2.3.108 L9-01-05-06 – Stall prevention by inverter PCB A3P ..................................................................................... 123
2.3.109 L9-10-11-12 – Stall prevention by inverter PCB A6P ..................................................................................... 123
2.3.110 L9-13-14-15 – Inverter PCB A3P output phase abnormality ......................................................................... 124
2.3.111 L9-16-17-18 – Inverter PCB A6P output phase abnormality ......................................................................... 125
2.3.112 LC-01 – Transmission abnormality ................................................................................................................. 126
2.3.113 LC-14-15-16 – Transmission abnormality main PCB/inverter PCB A3P ........................................................ 127
2.3.114 LC-19-20-21 – Transmission abnormality main PCB/fan inverter PCB A4P .................................................. 127
2.3.115 LC-24-25-26 – Transmission abnormality main PCB/fan inverter PCB A7P .................................................. 128
2.3.116 LC-30-31-32 – Transmission abnormality main PCB/inverter PCB A6P ........................................................ 130
2.3.117 LC-33-34-35 – Transmission abnormality main PCB/sub PCB ....................................................................... 131
2.3.118 P1-01-02-03 – Open phase or unbalanced power supply detection by inverter PCB A3P........................... 131
2.3.119 P1-07-08-09 – Open phase or unbalanced power supply detection by inverter PCB A6P........................... 132
2.3.120 P2-00 – Refrigerant auto-charge interrupted................................................................................................ 133
2.3.121 P4-01-04-05 – Fin thermistor abnormality on inverter PCB A3P .................................................................. 133
Table of contents
Service manual
5