Haier HSU-09H03/R(DB) [82/131] The ipm and outdoor pcb don t communicate or related abnormality

Haier HSU-09H03/R(DB) [82/131] The ipm and outdoor pcb don t communicate or related abnormality
7.4.5 The IPM and outdoor PCB don’t communicate or
Related Abnormality
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Communication is detected by checking the IPM module and the outdoor PCB
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The outdoor PCB broken leads to communication fault
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The IPM module broken leads to communication fault
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The outdoor PCB is broken
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The IPM module is broken
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Communication wiring disconnected
Troubleshooting
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Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
Demastic Air Conditioners
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System Diagnosis
79

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