Midea MS9A-07HRN1-QB6 - Page 43

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For MS9A-09HRN1-QB8, MS9A-09HRN1-QC2(2T0032300908),MS9A-11HRN1-QB8,
MS9A-16HRN1-QB8(A):
Condition of defrosting:
If any one of following items is satisfied, defrosting will start.
Condition 1: Both the following conditions are satisfied:
A: If the working time of the compressor accumulates to 42 min and one continuous
working time is more than 330s.
B: Check the temperature difference between T2 and T1
℃
Fan speed
T2-T1 Note
High
＜TH
DEFROST
If indoor fan is in high speed and T2-T1< TH
DEFROST
, start defrosting
Medium
＜
TM
DEFROST
If indoor fan is in medium speed and T2-T1< TM
DEFROST
, start defrosting
Low
＜
TL
DEFROST
If indoor fan is in low speed and T2-T1< TL
DEFROST
, start defrosting
Breeze or stop / If indoor fan is breezing or stopped, start defrosting
Capacity
T2-T1
TH
DEFROST
TM
DEFROST
TL
DEFROST
MS9A-16HRN1-QB8(A)
16 18 19
Condition 2: If the accumulated time of outdoor fan stopped but the compressor keep working due to
evaporator high temperature protection mode reaches 90 min from the end of last defrosting mode.
Condition of defrosting stop:
If any one of following conditions occurs, the defrosting will finish and the machine will turn to normal
heating mode.
Condition 1: Reached the defrosting time.
Condition 2: The current of compressor is more than I
defrost
continuously more than 7s. The value of
I
defrost
is depending on the exactly machine.