1-19. OFF DEFROST OPEARTION CONTROL
01-21
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,
and compressor operation contiguous time lasts for more than 10 minutes.
OFF Defrost Flow Chart
Heating operation stop
Outdoor heat exchanger temperature :
Below -4°C
and
Compressor integrating operation :
Over 30 minutes
and
Compressor contiguous operation:
Over 10 minutes
Defrost start
Defrost Indicater:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature : Over 10°C
or
Compressor ON time : Maximum 15 minutes
Defrost end
2. OFF DEFROST RELEASE CONDITION
Release Condition
Outdoor heat exchanger temperature is higher than 10°C
or
Compressor operation time has passed 15 minutes.
( Table 14 : OFF Defrost Release Condition )
OFF defrost operation is released when the conditions becomes as shown in Table 14.
