Part 7 - Troubleshooting - Daikin ALTHERMA HT Service Manual

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ESIE09-08B

Part 7 - Troubleshooting

1. Symptom-based Troubleshooting .......................................................119
2. Troubleshooting by Remote Control ...................................................121
Troubleshooting
2.1 The INSPECTION / TEST Button.........................................................121
2.2 Self-diagnosis by Wired Remote Control .............................................122
Button ...................................................................................................123
2.4 Remote Control Service Mode .............................................................124
2.5 Remote Controller Self-Diagnosis Function .........................................126
3.1 "A1" Indoor Unit: PC Board Defect ........................................................132
Valve (K1E) R-410A circuit...................................................................134
3.4 "AE" Indoor Unit: Water Circuit Error.....................................................136
PC Board and Control PC Board) ........................................................138
R-410A .................................................................................................140
3.9 "C9" Indoor Unit: Return Water Thermistor (R4T).................................142
3.11 "CJ" Indoor Unit: Malfunction of Thermostat Sensor in Remote 
Controller..............................................................................................144
3.12 "E1" Outdoor Unit: PC Board Defect......................................................145
3.13 "E1" Indoor Unit: PC Board Defect.........................................................146
3.20 "E7" Malfunction of Outdoor Unit Fan Motor .........................................158
Expansion Valve...................................................................................160
Valve (K2E) R-134a circuit ...................................................................162
Pipe 1, 2...............................................................................................169
Heat Exchanger....................................................................................171
117

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