Troubleshooting - Hitachi YUTAMPO Series Service Manual

6 Troubleshooting

Index
6.1 Outdoor unit........................................................................................................................................... 58
6.1.1 Discharge procedure and power shut off method for power circuit ............................................................... 58
6.1.2 Troubleshooting support ................................................................................................................................ 60
6.1.3 Self-diagnosis lighting mode ......................................................................................................................... 61
6.1.4 Checking the electrical parts of the outdoor unit ........................................................................................... 64
6.1.5 Checking the refrigerant cycle ....................................................................................................................... 67
6.1.6 How to run the indoor unit with the outdoor unit test switch .......................................................................... 68
6.1.7 Service Call Q&A ........................................................................................................................................... 69
6.2 Indoor unit ............................................................................................................................................ 70
6.2.1 Operation ....................................................................................................................................................... 71
6.2.2 Troubleshooting by alarm code (related to tank) ........................................................................................... 72
6.3 Troubleshooting by protection code (Outdoor unit) ............................................................................... 74
57 SMGB0135 rev.0 - 06/2020
6 .
T r o u b l e s h o o t i n g
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