Service Manual | VMH Series | Heat Controller, Inc. |
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P1:
9.2.7 Over voltage or too low voltage protection diagnosis and solution
Is the power supply good?
Yes
No
Make sure the power supply is normal.
Replace the outdoor
P2:
9.2.8 High temperature protection of compressor top diagnosis and solution
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| No |
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| Does the compressor operate? |
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| Is the connection good? |
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| Yes |
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| Yes | ||||
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| Is refrigerant circulation |
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| charge correct? |
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| Is overload protector normal? |
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| No, |
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| Charge refrigerant |
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| Yes | ||||
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| Is the abnormality the same |
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| after gas charging? |
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| Replace the outdoor PCB. | |||
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There is a restriction (Such as capillary or welded points of the pipes.)
No
No
Reconnect and retest
Replace it
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