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Lennox CB30U-46 Defrost Sensor Board
The defrost sensor control board controls if and when to commence an important defrosting cycle which may be needed in order to keep your outdoor unit from plugging up. The defrost board looks to a sensor located in the outdoor unit to determine when to initiate the defrosting cycle.
What are the signs that the Lennox defrost sensor board is not working right?
- Defrost session never starts even though there is a large amount of frost on the outdoor unit
- Your HVAC system will end up not running due to the safety features installed
- The main board might give out an alphanumeric error code when a defrost board fails to initialize
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