Mitsubishi Electric PUHY-HP200YNW-A Service Handbook page 154

[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-10 Error Code [5305, 5306] Detail Code 136
1. Error code definition
Current sensor/circuit fault (Detail code 136)
2. Error definition and error detection method
Detection of abnormal value by the current detection circuit before the startup of fan motor
3. Cause, check method and remedy
(1) Fan board fault
For inverter-related error codes, refer to the following page(s). [8-9 Troubleshooting Inverter Problems]
7-7-11 Error Code [5701]
1. Error code definition
Loose float switch connector
2. Error definition and error detection method
Detection of the disconnected float switch (open-phase condition) during operation
3. Cause, check method and remedy
(1) CN4F disconnection or contact failure
Check for disconnection of the connector (CN4F) on the indoor unit control board.
BS_07_L
Cause Check method and remedy
Refer to the following page(s).
[8-9-7 Checking the Fan Board Error Detection Circuit at No
Load]
[8-9-8 Checking the Fan Board for Damage at No Load]
[8-9-9 Checking the Fan Board for Damage with Load]
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