01-20
2. CONDITION OF THE DEFROST OPERATION COMPLETION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than +10
°
C or
Compressor operation time has passed 15 minutes.
1-19. 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 10.
(Table 10 : Condition of starting Defrost Operation)
1st time defrosting after starting operation
Less than 17 min.
17 to 62 min.
62 min. to 4 hours
After 4 hours
Does not operate
- 9
°
C
- 5
°
C
- 3
°
C
Compressor integrating
operation time
Compressor contiguous
operation time
Defrost operation is released when the conditions become as shown in Table 11.
(Table 11 : Defrost Release Condition)
Operation
temperature
Below 10 min.
Above 10 min.
Less than 35 min. 35 min. to 4 hours
After 4 hours
Does not operate
- 6
°
C
- 3
°
C
Compressor integrating
operation time
Compressor contiguous
operation time
Operation
temperature
Below 10 min.
Above 10 min.
Defrosting after 2nd time upon starting operation
1-18. COMPRESSOR PREHEATING
When the outdoor heat exchanger temperature is lower than 5
°
C and the heating operation
has been stopped for 30 minutes, power is applied to the compressor and the compressor is heated.
(By heating the compressor, warm air is quickly discharged when operation is started.)
When operation was started, and when the outdoor temperature rises to 7
°
C or greater,
preheating is ended.
