Midea MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1, MSH-12CRN1, MSH-12HRN1 Manual page 115

Midea air conditioner service manual
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8.7.3
Low room temperature protection:
When room temperature decreases to below 10¡ æ , compressor and outdoor fan will stop(indoor fan
is Breeze). Dehumidifying operation will be resumed when room temperature restores to over 13¡ æ .
8.7.4
At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that
of cooling mode.
8.8
Heating mode
8.8.1
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.
8.8.2
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.
8.8.3
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.
Room temp. up
Room temp. down
8.8.4
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
Indoor exchanger temp. up
Indoor exchanger temp. down
8.8.5
Auto wind at heating mode
Room temp. up
Room temp. down
Condition
Compressor
T> Ts+3
T<Ts+3
T< Ts+2
T>Ts+2
Condition
T= Indoor exchanger temp.
T<TE1
TE1<T<TE2
T>TE2
T> TE3
TE3<T<TE4
T<TE4
Condition
T=Indoor Temp.-Setting Temp.
T<2¡ æ
T>2¡ æ
T> 0¡ æ
T<0¡ æ
172
Outdoor fan
Off
Off
On
On
On
On
Off
Off
Indoor fan speed
Indoor fan speed
Off
Breeze
Setting fan speed
Setting fan speed
Breeze
Off
High
Med.
Med.
High

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