01-16
1-18. DEFROST OPERATION CONTROL
1. CONDITION OF STARTING THE DEFROST OPERATION
The defrost operation starts when the outdoor heat exchanger temperature sensor detects
the temperature lower than the values shown in Table 9.
(Table 9 : Condition of starting Defrost Operation)
Condition of 1st defrost operation
Compressor integrating
operation time
Compressor contiguous
operation time
Operation temperature
If the compressor continuous operation time is less than 10 minutes,
the OFF number of the compressor is counted.
If any defrost operated, the compressor OFF count is cleared.
2. CONDITION OF THE DEFROST OPERATION COMPLETION
Defrost operation is released when the conditions becomes as shown in Table 10.
( Table 10 : Condition of defrost release )
Release Condition
Compressor operation time has passed 15~20min.
or
High pressure sensor detects above 2.09MPaG.
Less than 22min.
Below 10min. Above 10min.
22 to 62min. 62 to 105min. After 105min.
Does not operate
Below - 9°C Below - 3°C Below - 1°C
Condition of Integrating defrost operation)
Compressor integrating
operation time
Compressor contiguous
operation time
Operation temperature
Less than 105min.
Below 10min. Above 10min.
After 105min.
(For long continuous operation)
Less than 10min.
(For intermittent operation)
Does not operate
Below - 1°C
OFF count of the comp.
40 times
Condition of 2nd defrost operation
Compressor integrating
operation time
Compressor contiguous
operation time
Operation temperature
Less than 35min.
Below 10min. Above 10min.
36 to 105min. After 105min.
Does not operate
Below - 5°C Below - 1°C
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