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International Comfort Products N8MPN100J22B1 Defrost Sensor Board
The defrost control board determines when or if to start the defrost cycle which may be necessary to continue normal heating and cooling operations. The defrost board depends on a temperature sensor located somewhere by the condenser to ascertain when to initiate the defrosting cycle.
Major signs the AC defrost sensor board will soon need to be replaced
- Defrosting never initiates even though there is a large amount of frost on the outdoor unit
- The HVAC system could stop functioning due in part to the fact that there is too much frost
- The control board may show an error number when the defrost control board refuses to initialize properly
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