Heating Mode - Midea MSG-09CR-QC3 Service Manual

Indoor
Block
Fan
LOW
A
BREEZE OFF 4minutes
LOW
B
BREEZE OFF 5minutes
LOW
C
BREEZE OFF 6minutes
Repeat on and off cycle.
10.7.3 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℃.
10.7.4 At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as
that of cooling mode.
10.7.5 At dehumidifying mode, the action of fans of indoor is the same as that of air-only mode.

10.8 Heating mode

10.8.1 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
10.8.2 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
10.8.3 Action of compressor and outdoor fan motor at heating mode: compressor must run for 7
minutes after starting and then judge temperature. Meanwhile other protections are still valid.
* This parameter can be changed from 0 to 3
10.8.4 Indoor Fan actions at heating mode
Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind
function prevails.
Anti-cold wind control function at heating mode (T=indoor exchanger temp.)
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Compressor and Outdoor Fan
ON 6minutes
ON 5minutes
ON 4minutes
Service manual