Error Code [0404] - Mitsubishi Electric PUHY-HP72 Service Handbook

[7-2 Error Code Definitions and Solutions: Codes [0 - 999] ]
7-2-2

Error Code [0404]

1. Error code definition
Indoor unit control-related errors
2. Error definition and error detection method
Indoor controller board
Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board.
3. Cause, check method and remedy
Defective indoor controller board
Note: Refer also to the Service Handbook for the indoor units.
HWE18240_GB
Cause Check method and remedy
Replace indoor controller board.
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