Midea MHC-V4W/D2N8-B User Manual

M thermal Mono
202004 103
4.24 Pd Troubleshooting
Digital display output
Description
 High temperature protection of air side heat exchanger refrigerant outlet in cooling mode. When the air side heat
exchanger refrigerant outlet temperature is higher than 61°C for more than 3 seconds, the system displays Pd
protection and M thermal Mono stops running. When the air side heat exchanger refrigerant outlet temperature
returns drops below 55°C, Pd is removed and normal operation resumes.
 M thermal Mono stops running.
 Error code is displayed on refrigerant system main control board for refrigerant system and user interface.
Possible causes
 Temperature sensor not connected properly or has malfunctioned.
 Poor condenser heat exchange.
 Fan motor damaged.
 Hydronic system main PCB damaged.
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Midea MHC-V4W/D2N8-B Specifications

General

Brand	Midea
Model	MHC-V4W/D2N8-B
Category	Air Conditioner
Language	English