Sanyo STW-2 Series - Defrosting Operation (Heating)

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10-4. Defrosting Operation (Heating)
■ Defrosting Flowchart
■ Defrosting Mode Timing Chart
Once the air conditioner enters defrosting mode, it will not release defrosting until the
outdoor heat exchanger coil temperature rises above 41°F. During this period, heat is
provided by the electric heater instead of by heat pump.
NOTE
Outdoor heat
exch. coil
temp.
Release from defrostingStart of defrosting
41 °F
14 °F
ON
Solenoid coil
(4-way valve)
Compressor
OFF
ON
ON
ON
Electric heater ON
ON
Fan motor
OFF OFF
Set speed
YES
YES
Temperature of outdoor heat
exchanger coil is below 14°F.
Temperature of outdoor heat
exchanger coil is higher than
41°F.
Defrosting begins
Compressor ON
Release from defrosting
NO
NO
• Compressor ⇒ OFF
• Electric heater ⇒ ON
Heat Pump Models