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Mitsubishi PEA Defrost Sensor Board
The defrost sensor control board will determine when to initiate an important defrosting cycle if necessary, to keep the outdoor unit free from frost build-up. The defrost board relies on a defrost sensor located near the condenser to verify when to initiate the defrosting cycle.
Subtle cues of a worsening defrost board
- The primary control board may throw a type of error code produced when the defrost board is bad
- Defrost session never runs especially when there is frost that has built up
- Air conditioning may cease to function due in part to too much frost
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