Midea SMK-60/CGN8, Service Manual

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M‐Thermal Split
44 201909
Midea M‐Thermal Split Ser
vice Manual
4.3 E2 Troubleshooting
Digital display output
Description

Communication error between hydronic box and user interface.

M‐Thermal Split stops running.

Error code is displayed on hydronic box main PCB and user interface.
Possible causes

Communication wires between hydronic box and user interface not connected properly.

Communication wiring X Y E terminals misconnected.

Loosened wiring within electric control box.

Interference from high voltage wires or other sources of electromagnetic radiation.

Damaged main PCB or electric control box communication terminals block.
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