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Defrost Thermostat HH18HA245
This part HH18HA245 is compatible with:
- Product Type:
- Air Conditioner, Central Air Conditioner, Furnace
- Brands:
- Carrier, Bryant, Payne
Related Articles & Videos
Defrost Thermostat Customer Reviews
Common Problems Fixed by the Defrost Thermostat
Based on customer reports and repair data, this part commonly fixes these issues:
Heat pump not heating
Heat pump coils frosting up
About the Defrost Thermostat
As the outdoor temperatures get colder, the outdoor coils can start to freeze up more often. When the coils frost up, a defrost control board or thermostat will energize a reversing valve to divert the warmer refrigerant from the indoor coil to help melt the excess frost from the outdoor coil. If the defrost thermostat is defective, the frost on the outdoor coils may be unable to melt. To determine if the defrost thermostat is defective, use a multimeter to test it for continuity. If the defrost thermostat does not have continuity when it reaches the low temperature of its operating range, replace it.
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