M thermal Mono
82 200204
Midea M thermal Mono Service Manual
4.19 P5 Troubleshooting
Digital display output
Description
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 control board for refrigerant system and user interface.
Possible causes
Temperature sensor not connected properly or has malfunctioned.
Water piping contains air.
Insufficient water flow.
Hydronic system main PCB damaged.