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International Comfort Products C8DNL125L20B1 Defrost Sensor Board
The defrost sensor control board instructs the outdoor unit to begin an important defrosting cycle which actually helps to continue normal heating and cooling operations. It depends on a specific sensor located somewhere by the condenser to agree when the defrost cycle should begin.
Main clues your defrost board is dead
- Defrost mode does not run especially when there is frost on the outdoor unit
- The control board might issue a particular error code referring to the failed defrost sequence
- Your HVAC system will cease to function due in part to way too much frost build-up
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