21. 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 defrost lamp
lighting, the outdoor unit will allow the heat exchanger to defrost, and then stop.
In heating operation, the outdoor heat exchanger temperature is less than 24.8°F (-4°C), and
compressor operation integrating time lasts for more than 30 minutes.
OFF Defrost Flow Chart
Heating operation stop
Outdoor heat exchanger temperature:
Below 24.8°F(-4°C)
and
Compressor integrating operation:
Over 30 minutes
Defrost start
Defrost Indicater:
[Defrost lamp]
Lighting
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.
01-15
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