Defrosting Operation (Heating) - Sanyo STB0810C1 Technical & Service Manual

10-2. Defrosting Operation (Heating)

Heat Pump Model
Model STB0823H1
Defrosting Flowchart
Defrosting Mode Timing Chart
Compressor
Electric heater
Solenoid coil
(4-way valve)
Fan motor
Outdoor heat 39 F
exch coil
temp. 14 F
Once the air conditioner enters defrosting mode, it will not release defrosting until the
NOTE
outdoor heat exchanger coil temperature rises above 39°F. During this period, heat is
provided by electric heater instead of by the heat pump.
Compressor ON
Temperature of outdoor heat
exchanger coil is blow 14 F.
Defrosting begins
Compressor
Electric Heater
Temperature of outdoor heat
exchanger coil is higher than
39 F.
Release of defrosting
Start of defrosting
ON
OFF
Set speed
NO
YES
OFF
ON
NO
YES
Release of defrosting
OFF
ON ON
ON
45
ON
OFF
ON