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International Comfort Products NDN3075HFA1 Defrost Sensor Board
The defrost sensor board instructs the system to activate the defrosting phase in order to keep the outdoor unit free from frost build-up. The defrost sensor board is relayed information from a specific sensor located somewhere by the condenser to determine when the defrost cycle should begin.
Warnings the defrost sensor board is in dire need of a replacement
- Defrost mode will not kick in even though there is excessive frost on the outdoor unit
- The system will stop functioning for the simple fact of the safety features installed
- The main control board might issue an error code produced by too much frost
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