Defrosting Mode(Available For Heating Mode) - Midea MSC-21CRN1 Service Manual

11.7.5 Auto wind at heating mode (T=indoor temp.)
Room temp. down
11.7.6 Indoor evaporator high-temperature protection at heating mode
TE7
TE8
TE15
11.7.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time

11.8 Defrosting mode(available for heating mode)

11.8.1 Defrosting condition: Defrosting starts when either of the following ①&②:
① The compressor keeps running under the condition of T3 <0℃(TC1) for 40 minutes or more, beside T3
＜-3℃(TC3) exceed 3 minutes.
② Calculate from the end of latest defrost, evaporator high temp. Protection only closes outdoor fan with
the compressor still running. Add up to 90 minutes.
11.8.2 Attention: defrosting end or T3≥20℃(TC2) the clock restart.
11.8.3 Ending condition of defrosting
If one of following conditions is satisfied, end the defrost and turn into heating mode:
A. The defrost time has reached to 10 minutes.
B. T3≥TC2（20℃）
11.8.4 Defrosting Actions (In defrosting action the protection of T2's open circuit and short circuit can't
run.)
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Service manual
Med fan
0
2
Comp off
Out fan off
Out fan low
Compressor on
Out fan on (high)
Low fan
Room temp. up
T-Ts
Compressor,
out fan off
Compressor,
Out fan on
TE9