10-2. Defrosting Operation (Heating)
Heat Pump Model
Model STB0823H1
■Defrosting Flowchart
Compressor ON
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Temperature of outdoor heat | ||||
exchanger coil is blow 14°F. |
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| YES |
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Defrosting begins |
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● Compressor | ➞ OFF |
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● Electric Heater | ➞ ON |
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Temperature of outdoor heat | NO | |||
exchanger coil is higher than |
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39°F. |
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| YES |
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Release of defrosting |
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■Defrosting Mode Timing Chart
Compressor
Electric heater
Solenoid coil
Fan motor
Outdoor heat | 39 °F |
exch coil | 14 °F |
temp. |
| Start of defrosting |
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| Release of defrosting | |||||
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| OFF |
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| ON |
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| OFF |
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| ON |
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| OFF | ||
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| ON |
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| ON | |
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| Set speed |
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NOTE | Once the air conditioner enters defrosting mode, it will not release defrosting until the | |
outdoor heat exchanger coil temperature rises above 39°F. During this period, heat is | ||
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| provided by electric heater instead of by the heat pump. |
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