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24. OFF DEFROST OPERATION 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.
OFF Defrost Flow Chart
Heating operation stop
Defrost start
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature:
Over 60.8°F(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 60.8
°F(
16°C) or
Compressor operation time has passed 15 minutes.
In heating operation, the outdoor heat exchanger temperature is less than 24.8
°F(
- 4°C),
compressor continuous operation more than 10 minutes, and
compressor operation integrating time lasts for more than 30 minutes.
Outdoor heat exchanger temperature :
Below 24.8
°F(
- 4°C)
Compressor continuous operation :
Over 10 minutes
Compressor integrating operation :
Over 30 minutes
01-18
( Table 21 : OFF defrost release condition )
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