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Carrier 39-3SI Defrost Sensor Board
The defrost sensor control board initiates the defrosting phase which assists to get rid of the frost that collects on the outdoor unit. The defrost board is influenced by a specific sensor that can be found near the condenser, in order to agree when to initiate the defrosting cycle.
Symptoms of a weakening defrost board
- Your system could stop operating at all because of the amount of frost on the outdoor unit
- Defrosting never initiates even though there is quite a bit frost that has built up
- The control board could display a type of error code produced when the defrost control board fails to receive a signal
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Before buying or ordering do your best and make sure of the model number as well as make a visual comparison in order to be sure the right defrost sensor board is being ordered. The installing of a new defrost sensor board can be quite easy provided you know what you are doing and have the tools to get it done.
Feel free to download your manual for help.
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