Fujitsu ASYA12LGC, Service Instruction

Page: 31 / 82

20. OFF DEFROST OPEARTION CONTROL
1. OFF DEFROST OPERATION CONDITION
When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat
exchanger, the defrost operation will proceed automatically. In this time, if indoor unit operation
lamp flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost,
and then stop.
In heating operation, the outdoor heat exchanger temperature is less than -4°C, and
compressor operation integrating time lasts for more than 30 minutes.
AS*A09/ 12LGC
OFF Defrost Flow Chart
Heating operation stop
Outdoor heat exchanger temperature:
Below -4°C
and
Compressor integrating operation:
Over 30 minutes
Defrost start
Defrost Indicater:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature:
Over 16°C or
Compressor ON time: Over 15 minutes
Defrost end
2. OFF DEFROST END CONDITION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than 16°C or
Compressor operation time has passed 15 minutes.
05-16
21. 10 °C HEAT OPERATION
The 10°C HEAT operation functions by pressing 10°C HEAT button on the remote controller.
The 10°C HEAT operation is almost the same operation as below settings.
mode HEAT
setting temperature 10°C
fan mode AUTO
( Table 16 )