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International Comfort Products TCA024AKA5 Defrost Sensor Board
The defrost sensor board initiates the defrost cycle which may be necessary to get rid of the frost that collects on the outdoor unit. It looks to a sensor located in the outdoor unit to agree when to begin.
Red flags the AC defrost sensor board is dead
- Your HVAC system will stop functioning due to the fact of frost blocking the fins on the outside unit
- Defrost session has not run for quite some time especially when there is frost built up
- The control board may throw an alphanumeric error code produced by too much frost
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