Midea MS9A-05CR-QD0 Service Manual page 46

when AC is in evaporator high temp. protection in heating mode ,defrosting mode and the current
protection.
8.4.2.3 Indoor fan running rules
In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low and
auto.
8.4.2.4 Evaporator low temperature T2 protection.
When the evaporator coil temp.T2 keeps lower than TE5 for 5 minutes, the compressor and outdoor
fan will shut off.
When T2 is higher than TE6, the compressor and outdoor fan will restart up.
8.4.3 Heating Mode(for heat pump models)
8.4.3.1 Compressor running rules:
Once the compressor starts up, it will follow the below rules:
When indoor room temp.T1 is higher than Tj, the compressor and outdoor fan will shut off. When T1 is
lower than Tk, the compressor and outdoor fan will start up.
Tj=Ts+Tc
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