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International Comfort Products GPSM36S100F Defrost Sensor Board
The defrost control board determines when to initiate an important defrosting cycle in order to keep the outdoor unit free from frost build-up. It is relayed information from a defrost sensor located near the condenser to ascertain when to begin.
Some clues your outdoor defrost sensor board should need replacing
- Self defrost sequence never kicks in even though there is a lot of frost on the unit
- Air conditioning may stop running for the simple fact of the frost issue
- The primary control board might give out an error signal produced by too much frost
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