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International Comfort Products N9MP1100J20C1 Defrost Sensor Board
The defrost control board controls when to launch the defrost sequence which actually helps to keep the outdoor unit free from frost build-up. The control board relies on a defrost sensor which is near the condenser somewhere, in order to agree when to begin.
Indications the AC defrost sensor board needs to be replaced
- Unit defrost session does not run despite the fact that there is a lot of frost on the external unit
- Your HVAC system will stop working due to the fact of way too much frost build-up
- The main board may throw an error of some type referring to a bad defrost board
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