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Carrier 48XZ030060300TP Defrost Sensor Board
The defrost sensor board is jobbed with determining when to begin the defrost sequence in order to get rid of the frost that collects on the outdoor unit. The defrost board depends on a sensor located near the condenser to ascertain when to begin.
Clues the defrost sensor board will eventually need to be replaced
- Unit defrost session has not run for a while even when there is a large quantity of frost that makes the unit run like crap
- The main circuit board may show an error of some type produced by a bad defrost control board
- The HVAC system could not work for the fact of the frost blocking the flow of air
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