1-17. DEFROST OPERATION CONTROL
1. CONDITION OF STARTING THE DEFROST OPERATION
Integratingdefrost
(Constant monitoring)
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
After compressor operation time passed for 1 minute, when
a high-pressure sensor detected more than 2.09MPag.
.
or
Compressor operation time has passed 15 minutes.
The defrost operation starts as shown in the following Table 7, 8,and9.
From 2nd and later
defrost after
starting operation
Less than 35 minutes
More than 35 minutes
Does not operate
Compressor integrating operation time
( Table 7 : Condition of 1st defrost operation)
1st defrost
after
starting operation
Compressor integrating operation time
Less than 22 minutes
More than 22 minutes
More than 62 minutes
Does not operate
Outdoor heat exchanger temp.
Below -9°C
Outdoor heat exchanger temp.
Below -10°C
Outdoor heat exchanger temp.
Below -5°C
More than 240 minutes
( For long continuous operation )
Less than 10 minutes
( For
intermittent operation )
Compressor integrating operation time
Outdoor heat exchanger temp.
Below -3°C
OFF count of the compressor
40 times
( Table 9 : Condition of Integrating defrost operation)
( Table 8 : Condition of 2nd defrost operation)
01-19
3. CONDITION OF THE FAN’S DEFROST OPERATION STARTING
Outdoor temperature
-10
5.0
( The time of a defrost movement judgment. )
