Hitachi RAS-4-HNCE - 8 Troubleshooting

8. Troubleshooting
183
SMGB0079 rev.0 - 01/2013
8
Index
8.1. Initial troubleshooting ..........................................................................................................................184
8.1.1. Checking by means of the 7-segment display ......................................................................................... 184
8.1.2. Failure of the power supply to the indoor unit and the remote control switch .......................................... 185
8.1.3. Abnormal transmission between the remote control switch and the indoor unit ...................................... 186
8.1.4. Abnormal operation of the devices .......................................................................................................... 186
8.2. Troubleshooting procedure .................................................................................................................192
8.2.1. Alarm display ........................................................................................................................................... 192
8.2.2. Alarm codes for the outdoor and indoor units .......................................................................................... 193
8.2.3. Troubleshooting by alarm code for the outdoor and indoor units ............................................................ 194
8.2.4. Alarm codes for the KPI (E/H/X)3E Series and DX Interface .................................................................. 252
8.3. Troubleshooting in check mode ..........................................................................................................253
8.3.1. Troubleshooting using the remote controller PC-ART ............................................................................. 253
8.3.2. Troubleshooting using the remote controller PC-ARF ............................................................................. 263
8.3.3. Troubleshooting using the 7 segment display ......................................................................................... 268
8.4. Checking procedure for main parts .....................................................................................................277
8.4.1. Procedure for checking the DIP-IPM inverter for indoor and outdoor units ............................................. 277
8.4.2. Checking capacitors CB1 & CB2. ............................................................................................................ 283
8.4.3. Fault diagnosis of DC fan motor. ............................................................................................................. 284
8.4.4. Checking procedure for the electronic expansion valve for indoor and outdoor units ............................. 285
8.4.5. Checking procedure for AC fan motor ..................................................................................................... 285
8.4.6. Checking procedure for other parts ......................................................................................................... 286
8 . Tr o u b l e s h o o t i n g