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 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,
compressor continuous operation more than 10 minutes, and
compressor operation integrating time lasts for more than 30 minutes.
OFF Defrost Flow Chart
Heating operation stop
Outdoor heat exchanger temperature :
Below -4°C
Compressor continuous operation :
Over 10 minutes
Compressor integrating operation :
Over 30 minutes
Defrost start
Defrost Indicater:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature :
Over +13°C or
Compressor ON time : Maximum 15 minutes
Defrost end
2. OFF DEFROST END CONDITION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than +13°C
or Compressor operation time has passed 15 minutes.
01-19
AMP Air Conditioning
www.ampair.co.uk | [email protected]