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International Comfort Products N9MP2100J20A1 Defrost Sensor Board
The defrost sensor board initiates the defrost cycle which helps to remove frost build-up that may accumulate. The defrost sensor board depends on a specific sensor located somewhere by the condenser to decide when the defrost cycle should begin.
Red flags the defrost sensor board will have to be replaced
- The whole system may cease to operate due to the safety issue that the frost poses
- The HVAC system control board may issue a particular error code produced by a failing defrost board
- Defrosting never initiates despite that there is a large amount frost that needs to be removed
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