Defrost Operation Control - Fujitsu ASYA07LBCM Service Manual

15. 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 7.
(Table 7 : Condition of starting Defrost Operation)
Compressor integrating
operation :Less than 45min.
Does not operate
2. CONDITION OF THE DEFROST OPERATION COMPLETION
Defrost operation is released when the conditions become as shown in Table 8.
(Table 8 : Defrost Release Condition)
Outdoor heat exchanger temperature sensor value is higher than 10°C or
Compressor operation time has passed 15 minutes.
Compressor integrating
operation :45min and over
Less than 6 min. *1 After 6 min. *1
or 10min. *2
or 10min. *2
-8°C *3
-12°C *4
-14°C *5
-16°C *6
-18°C *7
Release Condition
01-14
*1. It means contiguous operation time.
*2. Compressor stop time:
Below 20min.
Above 20min.
*3. Outdoor temp. > 3°C
*4. 3 > Outdoor temp. > -1°C
=
*5. -1 > Outdoor temp. > -5°C
=
*6. -5 > Outdoor temp. > -10°C
=
*7. Outdoor temp. < -10°C
=
Select 6min.
Select 10min.