Feature & Operation
81Samsung Electronics
6-1-10 Defrost control
Defrost operation is controlled by sensing the temperature of indoor heat exchanger.
◆ How to sense defrost conditions
A condition
The temperature of indoor heat exchanger is checked in intervals of 1 minute. In case the temperature 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±3°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
AXBXC
condition or
BXDXE
condition
FXG
condition
Defr
ost time :
5~8 min
utes
◆ Operation pattern
Defrost
Compressor
Outdoor Fan
4-Way Valve
Indoor Fan
ON
ON
ON
ON
55sec
1min
Defrost Time
OFF
OFF
OFF
ON
ON
more than 58sec
2sec
55sec
1min
Low Speed
Thermo ON
Setting Speed
OFF
OFF
ON
DB98_20402A(1)_1 10/26/04 4:09 PM Page 81
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