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Carrier 38HDL018 Defrost Sensor Board
The defrost control board determines when to initiate the defrost cycle which aids to get rid of the frost that collects on the outdoor unit. The defrost sensor board is relayed information from a temperature sensor located near the condenser to agree when to initiate the defrosting cycle.
Symptoms poorly running AC defrost sensor board
- Defrost mode never starts even though there is excessive frost that has built up
- Air conditioning may stop working because of way too much frost build-up
- The main board may throw a particular error code if the defrost board fails
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