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Mitsubishi MSY-A17NA Defrost Sensor Board
The defrost control board initiates the defrost sequence if necessary, to defrost your outdoor unit. The defrost board is influenced by a temperature sensor located somewhere by the condenser to decide when the defrost cycle should begin.
Some warnings the defrost sensor board is in need of replacing
- The defrost feature never kicks in even though there is a lot of frost built up
- The system may cease to operate due in part to the frost blocking the flow of air
- The main board may throw an error signal when encountering a problem
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Before buying or ordering any Mitsubishi MSY-A17NA replacement part do your best and cross-check the model number as well as make a visual comparison in order to be sure the correct defrost sensor board is the one being purchased. There is no need to install it yourself. Hire a pro in your community to do the job for you.
Feel free to download your manual for help.
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