Dehumidifying Mode; Heating Mode - Midea MSE-07CR Service Manual

Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. )

11.6 Dehumidifying mode

11.6.1 The 4-way valve is off in dehumidifying mode
11.6.2 Compressor and Indoor Fan actions in dehumidifying mode
Indoor
Block
Fan
LOW
A
BREEZE OFF 4minutes
LOW
B
BREEZE OFF 5minutes
LOW
C
BREEZE OFF 6minutes
Repeat on and off cycle.
11.6.3 Low room temperature protection:
When room temperature decreases to below 10℃, compressor and outdoor fan will stop(indoor fan is
Breeze). Dehumidifying operation will be resumed when room temperature restores to over 13℃.
11.6.4 At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that
of cooling mode.
11.6.5 At dehumidifying mode, the action of fans of indoor is the same as that of air-only mode.

11.7 Heating mode

11.7.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. 4-way valve
must delay 2 minutes compared with compressor if the compressor changed into non-heating mode or
turned off. 4-way valve doesn't delay in dehumidifying mode.
11.7.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except
for the defrosting mode or the end of defrost.
11.7.3 Action of compressor and outdoor fan motor at heating mode: compressor must run for 7 minutes
35
Compressor and Outdoor Fan
ON 6minutes
ON 5minutes
ON 4minutes
Service manual