Midea MS9A-05CR-QD0 Service Manual page 47

Tk=Ts+Tc-1.
8.4.3.2 Outdoor fan running rules:
The outdoor units have single fan speed. The outdoor fan will run following the compressor except
when AC is in evaporator high temp. protection in heating mode ,defrosting mode and the current
protection.
8.4.3.3 Indoor fan running rules:
Indoor fan can be set to high/med/low/auto when the compressor is on. And when the compressor is
off, the indoor fan will run at low speed and the louver will locate at the anti cold wind angle.
Anti-cold wind function:
When evaporator coil temp.T2 is getting higher,
T2>TE2, the indoor fan will run at setting speed.
TE1<T2<TE2, the indoor fan will run at low speed.
When T2 is getting lower,
TE4<T2<TE3,the indoor fan will run at low speed.
T2<TE4, the indoor fan will shut off.
Auto fan action:
When T1-Ts>2℃ ,the indoor fan will run at low speed.
When T1-Ts≤0℃ , the indoor fan will run at medium speed.
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