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International Comfort Products NHP248GKA1 Defrost Sensor Board
The defrost sensor control board instructs the outdoor unit to begin an important defrosting cycle if necessary, to keep the outdoor unit free from frost build-up. The control board is relayed information from a temperature sensor which is near the condenser somewhere, in order to decide when to begin.
Important clues of an ailing outdoor defrost sensor board
- The main control board could throw an error code if the defrost board fails
- The HVAC system could not work for the fact of the amount of frost on the outdoor unit
- Self defrost sequence has not run for a while despite that there is a large amount frost that makes the unit run like crap
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