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Features & Operation
Defrost operation is controlled by sensing the temperature of indoor heat exchanger
Defrost control
9
◆ How to sense defrost conditions
A condition
The temperature of indoor heat exchanger is checked in intervals of 1 minute. In case the tempera-
ture of indoor heat exchanger drops more than 0.5°C for 6 minutes, it is considered as one cycle. If
it happens 3 times continuously, It is said that “ A condition” is satisfied.
B condition
If the temperature of indoor heat exchanger is below about 40°C when the compressor is on, it is
considered as defrost “B condition”
C condition
When the accumulating time of compressor ON is over 20 minutes.
D condition
When the accumulating time of compressor ON is over 3Hr.
E condition
When operating time of compressor without stopping is over 6 minutes.
F condition
If the compressor is off(thermo off) when the temperature of indoor heat exchanger is below about
46°C, it is considered as one cycle.
If it happens 2 times continuously, It is said that “F condition” is satisfied.
G condition
When the accumulating time of compressor ON is over 90 minutes.
◆ Defrost operation conditions
A
✕B✕C condition or
B
✕D✕E condition
F
✕G condition
Defrost time : 5~8 minutes
◆ Operation pattern
00150A(2)-54~98 2/5/01 11:52 AM Page 69
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