Troubleshooting
In cool, heat mode, the outdoor unit and compressor will not run.
Controller malfunction (IC20 -
03 broken, creepage of parallel 
capacitor of relay loop,relay is bro-
ken etc.)
Wire loose or wrong connection
Improper setting of temperature
Change controller
Correctly wire according to the drawing
Adjust setting temp.
Water leakage 
Abnormal sound and shake 
Drainage pipe blocked or broken |
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| Change drainage pipe | |||
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Wrap of refrigerant pipe joint is not close |
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enough. |
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Fan of indoor unit contacts other parts. |
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| Adjust fan location. | ||
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Foreign object in indoor unit |
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| Take out the foreign object. | ||
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Compressor shakes too much. |
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| Adjust support washer of compressor, and | ||
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| tighten loosen screws. | |||
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Touch of pipeline of outdoor unit |
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| Separate the touching pipeline. | |||
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Touch of inner plates
Louver of outdoor unit touched outer case.
Abnormal sound inside compressor 
1.Tighten connect screw.
2.Stick absorbing clay between plates.
Adjust location of louver.
Change compressor
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