Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 233

[7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ]
7-7-16 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
[Outdoor unit]
Detection of abnormal value by the current detection circuit before the startup of fan motor
[HBC]
Detection of abnormal value by the current detection circuit before the startup of pump motor
3. Cause, check method and remedy
[Outdoor unit]
(1) Fan board fault
[HBC]
(1) Pump INV board fault
For inverter-related error codes, refer to the following page(s). [8-10 Troubleshooting Inverter Problems]
7-7-17 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/CN303 disconnection or contact failure
Check for disconnection of the connector (CN4F) on the indoor unit control board.
Check the HBC controller box connector (CN303) for proper connection.
Main-HBC does not have a float switch. Check the short-circuit connector (CN303) for proper connection.
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Cause
Cause
Check method and remedy
Refer to the following page(s).
[8-10-8 Checking the Fan Board Error Detection Circuit at No
Load]
[8-10-9 Checking the Fan Board for Damage at No Load]
[8-10-10 Checking the Fan Board for Damage with Load]
Check method and remedy
Refer to the following page(s).
[8-10-12 Checking the Error-Detection Circuit on the Pump
INV Board (Without load)]
[8-10-13 Checking the Pump INV Board for Damage (With-
out load)]
[8-10-14 Checking the Pump INV Board for Damage (During
pump operation)]
BS_07_M