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Panasonic CS-XE9PKUA Defrost Sensor Board
The defrost sensor control board determines when to initiate the defrosting phase which helps to get rid of the frost that collects on the outdoor unit. The defrost sensor board is relayed information from a sensor located in the outdoor unit to decide when the defrost cycle should begin.
Warnings to watch for in a bad outdoor defrost sensor board
- Your HVAC system will stop operating due to the fact of too much frost
- Defrosting never kicks in especially when there is a rather large amount of frost on the outdoor unit
- The HVAC system control board might issue a particular error code if the defrost control board fails
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