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International Comfort Products N9MPD075F12A2 Defrost Sensor Board
The defrost control board determines when or if to start the defrost cycle which aids to get rid of the frost that collects on the outdoor unit. The defrost sensor board relies on a sensor located near the condenser to ascertain when to begin.
What signals that my defrost sensor board is failing?
- The AC may cease to function at all because of the frost blocking the flow of air
- The defrost feature has not run for quite some time even though there is excessive frost that needs to be removed
- The main control board could display an error of some type if the defrost board fails
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