Midea SMK-60/CGN8, Service Manual

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M‐Thermal Split
201909 69
4.18 P5 Troubleshooting
Digital display output
Description

High temperature difference between water side heat exchanger water inlet and water outlet temperatures
protection.

M‐Thermal Split stops running.

Error code is displayed on hydronic box main PCB and user interface.
Possible causes

Temperature sensor not connected properly or has malfunctioned.

Water piping contains air.

Insufficient water flow.

Hydronic box main PCB damaged.
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