Heating Mode
Indoor Unit
Outdoor Unit
Heating Cycle
Gas of high pressure
& temperature
Indoor heat exchanger
Compressor
(Evaporation)
(Compression)
4-way valve
(Heat pump only)
Super cooled liquid of
low pressure
Steam-gas of low
pressure
Super cooled liquid of high
pressure
Capillary
Outdoor heat exchanger
(Throttling)
(Condensation)
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