Midea MHC-V4W/D2N8-B

M thermal Mono
202004 107
4.26 HE Troubleshooting
Digital display output
Description
 Communication error between main control board of hydronic module and Ta/room thermostat transfer PCB
 M thermal Mono stops running.
 Error code is displayed on hydronic system main PCB, outdoor unit main PCB and user interface.
Possible causes
 Temperature collecting plate(Optional) connection wire is not connected.
 Temperature collecting plate(Optional) is damaged.
Procedure
HE
Temperature collecting plate
connection wire is not connected.
Yes
Check the connection line and joint.
No
Temperature collecting plate is
damaged.
Yes
Replace temperature collecting plate
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