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International Comfort Products N9MP1050B12C1 Defrost Sensor Board
The defrost control board commences the defrosting phase in order to keep the outdoor unit free from frost build-up. The defrost board relies on a specific sensor located somewhere by the condenser to agree when to initiate the defrosting cycle.
Major warnings your defrost board should need replacing
- The main control board could signify an error code produced when the defrost control board fails to receive a signal
- Defrosting will not kick in even though there is excessive frost that makes the unit run like crap
- Most systems will stop operating at all because of lack of airflow through the outdoor unit
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