9.9 Defrosting operation (Available for heating only).
9.9.1 Defrosting condition: Defrosting starts when either of the following ①&②:
① 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:
℃
Temp. of evaporator---room temp.
Fan speed is high ≤TH
DEFROST
Fan speed is mid ≤TM
DEFROST
Fan speed is low ≤TL
DEFROST
Breeze Meet only if it is Breeze
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.
9.9.2 Defrosting time
If the temp. difference condition ① is satisfied for less than 40 minutes, this can be regarded
as severe frosting. The defrosting time is 10 minutes.
If the temp. difference condition ② is satisfied for more than 40 minutes, the defrosting time is
6 minutes.
If the temp. difference condition ① is satisfied out of 40 minutes, generally the 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→
9.9.3 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 6 or 10 minutes.
B. The compressor current has reached to I
DEFROST
or above, I
DEROST
differs in different
models.
9.9.4 Defrosting Actions:
Defrost 10or 6minutes
45S 25S
Compressor
4-way Valve 23S
40S
Outdoor Fan
Indoor Fan
10S
18
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