Gree GWHD14NK3BO Service Manual page 12

Refrigerant System Diagram
Models:GWHD(36)NK3AO,GWHD(42)NK3AO
Outdoor Unit
Electronic
Expansion Valve
Indoor Unit
The outdoor and indoor units start to work once the power is switched on. During the cooling operation, the low
temperature, low pressure refrigerant gas from the heat exchanger of each indoor unit gets together and then is
exchanger of the outdoor unit to exchange heat with the outdoor air and then is turned into refrigerant liquid. After
passing through the throttling device, the temperature and pressure of the refrigerant liquid will further decrease and
refrigerant gas again. Such a refrigeration cycle goes round and round to achieve the desired cooling purpose. During
the heating operation, the four-way valve is involved to make the refrigeration cycle run reversely. The refrigerant
exchanger of the outdoor unit for a heat pump heating cycle so as to achieve the desired heating purpose.
10
Liquid Receiver
Heat Exchanger
Heat Exchanger
Heat Exchanger
Capillary
Stop Valve
Compressor
Gas/Liquid Separator
Heat Exchanger
Heat Exchanger
Heat Exchanger
M
Four-way Valve
Oil Separator
Heating
Cooling