U1

Compressor Phase Sequence Error

Description

The power supply phase sequence for the compressor is incorrect.

Appliance Error Codes Details

Error Code
U1
Error Name
Compressor Phase Sequence Error
Appliance Type
air_conditioner
Brand
Gree
Severity
high

Additional Troubleshooting

1. This is a serious electrical issue.
2. Turn off the unit immediately.
3. Contact a qualified electrician to check the wiring and phase sequence.

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Verified by: Pavel Volkov
Created:
Last updated:
Information verified against official sources

Official Sources

Official Manufacturer Service Manuals

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Original equipment manufacturers official documentation

Industry Standards Organizations

International standards for electrical appliances and error codes

International Electrotechnical Commission standards

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