Pioneer WYS050GMHI22M5 Air Conditioner

User Manual - Page 54

For WYS050GMHI22M5. Also, The document are for others Pioneer models: YN020GMFI22M2D,   YN030GMFI22M3D, YN040GMFI22M4D, YN050GMFI22M5D

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8.4.2.5 E5 (Over-voltage or under-voltage protection) diagnosis and solution.
Error Code E5
Malfunction decision
conditions
An abnormal voltage rise or drop is detected by checking the
specified voltage detection circuit.
Supposed causes
Power supply problems.
System leakage or block
PCB faulty
Trouble shooting:
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