7. TROUBLE SHOOTING
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| Trouble |
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| Is the |
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| Is the power | NO | Check power supply mains |
| unit display |
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| applied to the |
| or interconnection wires | |
| normal? |
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| unit |
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| YES |
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| YES |
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NO | Outdoor unit does |
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| Is the |
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| not run?(note. 1) |
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| power normal? | NO |
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| Check the wiring of indoor | ||
| YES |
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| check the voltage between |
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| L & N of terminal |
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| block |
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| Does | NO |
| YES |
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| the compressor run |
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| normally? |
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| YES |
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| press the power ON/OFF |
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| button on remote controller |
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| Indoor unit does | NO |
| YES |
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| not run(note 1) |
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| NO |
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Is the unit | YES |
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| Does the |
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display |
| Normal |
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| beeper beep two |
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mormal? |
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| Does | |
Check the failure |
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| times? |
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NO |
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| control PCB | ||
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| code according to | check the |
| YES | NO | status LED repeat one |
| the self diagnostic |
| second "on and | |||
| connecting |
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| (note 2) |
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| off"? | |
YES | point of |
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| magnetic |
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| NO | Is the display | • control PCB fault | ||
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| contactor | ||||
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| • Micom or reset | |||
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| all off? | ||
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| IC fault | YES | |
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| YES |
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check the failure | • Check the connector on display |
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code according to | • Check the remote signal receiver | |
the | PCB connected to control PCB | • Check the connection between signal |
(note 2) | • Check the display PCB itself | receiver and control PCB |
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36
