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International Comfort Products N9MP1075B12C2 Defrost Sensor Board
The defrost control board controls if and when to commence an important defrosting cycle which may be necessary to get rid of the frost that collects on the outdoor unit. The defrost sensor board depends on a sensor located somewhere by the condenser to determine when the defrost cycle should begin.
Signs the AC defrost sensor board has to be replaced
- Defrosting has not run for a while especially when there is frost on the outdoor unit
- The main circuit board could signify a particular error code if the defrost control board fails
- The system will cease to function because of frost blocking the fins on the outside unit
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