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Mitsubishi MSH-12NV Defrost Sensor Board
The defrost sensor control board instructs the outdoor unit to begin an important defrosting cycle if necessary, to rid your unit of frost that can build up. The board is relayed information from a sensor that can be found near the condenser, in order to determine when to begin.
Major clues your outdoor defrost sensor board needs replacing ASAP
- The system may stop functioning due to the fact of way too much frost build-up
- Self defrost sequence does not begin despite the fact that there is quite a bit frost on the outdoor unit
- The HVAC system control board could signify an error of some type when a defrost board fails to initialize
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