M thermal Mono
66 202008
Midea M thermal Mono
4.19 P5 Troubleshooting
Digital display output 4.19.1
Description 4.19.2
High temperature difference between water side heat exchanger water inlet and water outlet temperatures
protection.
M thermal Mono stops running.
Error code is displayed on hydronic system main PCB and user interface.
Possible causes 4.19.3
Temperature sensor not connected properly or has malfunctioned.
Water piping contains air.
Insufficient water flow.
Hydronic system main PCB damaged.
Midea CAC
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