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Freeze Prevention for Indoor Coil (Cooling)
Cooling Mode
During the cooling operation, if the temperature of the indoor coil falls below 34°F for a period of
approximately 5 minutes, the compressor will shut o . This will prevent the indoor coil from freezing. The
compressor will start running again when the coil temperature reaches 50°F or above.
However, the safety re-starting function will prevent the compressor restarting if the minimum 3 minute
shutdown time period has not elapsed. The indoor fan motor will continuously operate during this coil
freezing prevention mode.
The indoor coil freeze prevention function is also available in the Class 2 mode.
Freeze Prevention for Indoor
Indoor Coil
Temperature
50°F
34°F
Compressor
ON
Indoor Fan
Outdoor
ON
5 min
ON
5 min
– 20 –
ON
ON
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