Troubleshooting - Hitachi RAS-(3-6)HVNC1(E) Service Manual

8 Troubleshooting

Index
8.1. Initial troubleshooting .......................................................................................................................... 208
8.1.1. Checking by means of the 7-segment display ......................................................................................... 208
8.1.2. Failure of the power supply to the indoor unit and the remote control switch .......................................... 209
8.1.3. Abnormal transmission between the remote control switch and the indoor unit ...................................... 210
8.1.4. Abnormal operation of the devices .......................................................................................................... 210
8.2. Troubleshooting procedure ................................................................................................................. 216
8.2.1. Alarm display ........................................................................................................................................... 216
8.2.2. Alarm codes for the outdoor and indoor units .......................................................................................... 217
8.2.3. Troubleshooting by alarm code for the outdoor and indoor units ............................................................ 219
8.2.4. Alarm codes for the KPI (E/H/X)3E Series and DX Interface .................................................................. 275
8.3. Troubleshooting in check mode .......................................................................................................... 276
8.3.1. Troubleshooting using the remote controller PC-ART ............................................................................. 276
8.3.2. Troubleshooting using the remote controller PC-ARF ............................................................................. 287
8.3.3. Troubleshooting using the 7 segment display ......................................................................................... 292
8.4. Checking procedure for main parts ..................................................................................................... 301
8.4.1. Checking procedure for the PCB (PCB1 ref PO101) ............................................................................... 301
8.4.2. Checking procedure for the DIP-IPM inverter .......................................................................................... 303
8.4.3. Checking procedure for the capacitors CB1 & CB2 ................................................................................ 309
8.4.4. Checking procedeure for the DC fan motor ............................................................................................. 310
8.4.5. Checking procedure for the AC fan motor ................................................................................................311
8.4.6. Checking procedure for the electronic expansion valve for indoor and outdoor units ..............................311
8.4.7. Checking procedure for other parts ......................................................................................................... 312
207
SMGB0087 rev.0 - 12/2013
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T r o u b l e s h o o t i n g
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