Off Defrost Operation Control - Fujitsu ASYG09KMCB Service Instruction

8. OFF DEFROST OPEARTION CONTROL
If the outdoor unit is frosted when stopping the heating operation,
it stops after performing the automatic defrosting operation.
In this time, if indoor unit operation lamp flashes slowly (7 sec ON / 2 sec OFF),
outdoor unit will allow heat-exchanger to defrost, and then stop.
1. OFF DEFROST OPERATION CONDITION
In heating operation, the outdoor heat-exchanger temperature is less than - 4°C,
compressor continuous operation more than 10 minutes, and
compressor operation integrating time lasts for more than 30 minutes.
2. OFF DEFROST END CONDITION
Defrost operation is released
when outdoor heat-exchanger temperature rises 16°C
or when 15 minutes has passed from defrost start.
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