Hitachi RAS-8FSXN - Page 5

7.2 Test run...................................................................................................................................... 137
7.2.1 Before the test run...................................................................................................................... 137
7.2.2 Test run using the remote control switch.................................................................................... 138
7.2.3 Test run from the outdoor unit..................................................................................................... 138
7.2.4 Checking at test run.................................................................................................................... 140
7.2.5 Refrigerant cycle checklist.......................................................................................................... 141
7.2.6 Automatic judgement system for refrigerant amount.................................................................. 143
7.2.7 Reset for accumulated operation time of compressor 1-2 after maintenance (cUJ1-cUJ2)....... 145
7.2.8 Test run check list....................................................................................................................... 146
8 Troubleshooting.............................................................................................. 147
8.1 Initial troubleshooting................................................................................................................. 148
8.1.1 Checking the electrical wires and the power source .................................................................. 148
8.1.2 Checking by 7-segment display.................................................................................................. 149
8.1.3 Checking of the alarm code history............................................................................................. 150
8.1.4 Emergency operation.................................................................................................................. 153
8.1.5 Failure of the power supply to the indoor units and the remote control switch........................... 158
8.1.6 Abnormal transmission between the remote control switch and the indoor unit......................... 159
8.1.7 Abnormal operation of the devices............................................................................................. 160
8.2 Procedure for troubleshooting.................................................................................................... 168
8.2.1 Alarm codes................................................................................................................................ 168
8.3 Troubleshooting by alarm code.................................................................................................. 170
8.3.1 Alarm codes................................................................................................................................ 170
8.4 Troubleshooting in the check mode by using the remote control switch.................................... 238
8.5 Troubleshooting by using the 7-segment display....................................................................... 245
8.6 RSW, DSWs and LEDs functions............................................................................................... 257
8.7 Checking procedures for each main part................................................................................... 262
8.7.1 Self-checking of PCB using the remote control.......................................................................... 262
8.7.2 Self-checking of the remote control switch................................................................................. 265
8.7.3 Checking procedures for other main parts.................................................................................. 267
9 Spare parts....................................................................................................... 275
9.1 Cabinet and fan components for outdoor units.......................................................................... 276
9.1.1 Cabinet and fan components for RAS-(8-12)FSXN.................................................................... 276
9.1.2 Cabinet and fan components for RAS-(14-18)FSXN.................................................................. 278
9.2 Refrigerant cycle components for outdoor units......................................................................... 280
9.2.1 Refrigerant cycle components for RAS-(8-12)FSXN.................................................................. 280
9.2.2 Refrigerant cycle components for RAS-(14-18)FSXN................................................................ 283
9.3 Electrical parts for outdoor units................................................................................................. 286
9.3.1 Electrical box components for RAS-(8-18)FSXN........................................................................ 286
9.3.2 Sub electrical box components for RAS-(14-18)FSXN............................................................... 288
9.4 Refrigerant cycle and electrical parts for CH units..................................................................... 289
10 Servicing........................................................................................................... 291
10.1 Removing the front service cover............................................................................................... 292
10.2 Removing the upper cover......................................................................................................... 293
10.3 Removing the electrical box cover............................................................................................. 294
10.3.1 Removing the electrical box cover for RAS-(8-12)FSXN ........................................................... 294
10.3.2 Removing the electrical box cover for RAS-(14-18)FSXN ......................................................... 294
Index
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SMGB0065 rev. 1 - 12/2010