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International Comfort Products H8MPL075F16B1 Defrost Sensor Board
The defrost sensor control board will determine when to initiate the defrosting phase which helps to get rid of the frost that collects on the outdoor unit. The control board looks to a temperature sensor located somewhere by the condenser to determine when to begin.
Indications to watch for in a bad defrost board
- Self defrost sequence refuses to initiate even though there is a large amount of frost that needs to be removed
- The system will stop functioning due to too much frost
- The primary control board could throw an error number if the defrost control board fails
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