Midea MFGA-60ARDN1-QC2 Service Manual page 37

When T2 is getting lower,
TE4<T2<TE3,the indoor fan will run at low speed.
T2<TE4, the indoor fan will shut off.
While TE1=30, TE2=35, TE3=32, TE4=26
8.2.3 Defrost (only available to heating mode)
8.2.3.1 Condition of defrosting:
The units run with T3＜-2℃ for 40 minutes
8.2.3.2 Defrosting Action:
T2
Setting
TE2
TE1
TE3
Low
TE4
Off
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