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International Comfort Products N9MP2050B12C1 Defrost Sensor Board
The defrost sensor board determines when to initiate the defrost sequence in order to rid your unit of frost that can build up. It looks to a specific sensor located near the condenser to agree when to initiate the defrosting cycle.
Major indications your defrost board is not going to last much longer
- The defrost feature never kicks in despite that there is a large amount frost that needs to be removed
- The whole system may stop working due in part to the frost issue
- The primary control board may throw an alphanumeric error code referring to the failed defrost sequence
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