Midea MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1, MSH-12CRN1, MSH-12HRN1 Manual page 325

8.9 Defrosting operation (Available for heating only).
8.9.5 Defrosting condition: Defrosting starts when either of the following
A and B are satisfied:
A: The compressor keeps running for 40 minutes or more.
B: The temperature difference of evaporator and room temperature meets one of the
following:
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.
8.9.6 Defrosting time
If the temp. difference condition
regarded as severe frosting. The defrosting time is 10 minutes.
If the temp. difference condition
time is 6 minutes.
If the temp. difference condition
defrosting time is 6 minutes, after three continuous 6-minute defrost, the fourth should
be 10 minutes defrost. The circulation is as following:
→6-minute defrost → 6-minute defrost→6-minute defrost→10-minute defrost→
8.9.7 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 6 or 10 minutes.
B. The compressor current has reached to I
different models.
Fan speed is high
Fan speed is mid
Fan speed is low
Breeze
is satisfied for less than 40 minutes, this can be
is satisfied for more than 40 minutes, the defrosting
Temp. of evaporator---room temp.
Meet only if it is Breeze
is satisfied out of 40 minutes, generally the
or above, I
DEFROST
B B
& :
≤TH
DEFROST
B B
≤TM
DEFROST
B B
≤TL
DEFROST
B B
d iffers in
DEROST
B B