Part 9 Troubleshooting - Daikin ERQ Service Manual

ESIE09-05
1. Symptom-based Troubleshooting .......................................................151
2. Troubleshooting by Remote Controller ...............................................154
3. Troubleshooting by Indication on the Remote Controller ....................165
Troubleshooting
Troubleshooting
2.1 The INSPECTION / TEST Button.........................................................154
2.2 Self-diagnosis by Wired Remote Controller .........................................155
2.3 Remote Controller Service Mode .........................................................156
2.4 Remote Controller Self-Diagnosis Function .........................................158
3.1 "A0" AHU: Error of External Protection Device.....................................165
3.2 "A1" AHU: PC Board Defect .................................................................166
3.3 "A6" AHU: Fan Motor (M1F) Lock, Overload........................................167
3.4 Abnormal Power Supply Voltage..........................................................168
3.5 "A9" AHU: Malfunction of Moving Part of Electronic Expansion Valve
(Y1E) ....................................................................................................169
3.6 "AJ" AHU: Malfunction of Capacity Determination Device ...................171
3.7 "C1" AHU: Failure of Transmission (Between AHU PC Board and Fan PC
Board)...................................................................................................172
3.8 "C4" AHU: Malfunction of Thermistor (R2T) for Heat Exchanger .........174
3.9 "C5" AHU: Malfunction of Thermistor (R3T) for Gas Pipes ..................175
3.10 "C6" AHU: Failure of Combination (Between AHU PC Board and Fan PC
Board)...................................................................................................176
3.11 "C9" AHU: Malfunction of Thermistor (R1T) for Suction Air .................177
3.12 "CA" AHU: Malfunction of Thermistor for Discharge Air .......................178
3.13 "CC" AHU: Malfunction of Humidity Sensor System ............................179
3.14 "CJ" AHU: Malfunction of Thermostat Sensor in Remote Controller ....180
3.15 "E1" Outdoor Unit: PC Board Defect ....................................................181
3.16 "E3" Outdoor Unit: Actuation of High Pressure Switch.........................182
3.17 "E4" Outdoor Unit: Actuation of Low Pressure Sensor.........................184
3.18 "E5" Inverter Compressor Motor Lock ..................................................186
3.19 "E7" Malfunction of Outdoor Unit Fan Motor ........................................187
3.20 "E9" Outdoor Unit: Malfunction of Moving Part of Electronic Expansion
Valve (Y1E, Y3E) .................................................................................188
3.21 "F3" Outdoor Unit: Abnormal Discharge Pipe Temperature .................190
3.22 "F6" Outdoor Unit: Refrigerant Overcharged........................................191
3.23 "H9" Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air....192
3.24 "J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T)....193
3.25 "J5" Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction Pipe
1, 2 .......................................................................................................194
3.26 "J6" Outdoor Unit: Malfunction of Thermistor (R6T) .............................195
3.27 "J7" Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid
Pipe ......................................................................................................196
3.28 "J9" Outdoor Unit: Malfunction of Thermistor (R4T) .............................197
3.29 "JA" Outdoor Unit: Malfunction of High Pressure Sensor.....................198
3.30 "JC" Outdoor Unit: Malfunction of Low Pressure Sensor .....................199
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149