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International Comfort Products NAC230GKA1 Limit Switch
Limit switches were created due to the fact that if the air never warms up inside the exchanger then you will never get hot air through the ducts. A normal limit switch has a sensor in the air handler that makes the determination when the heated air is warm enough that it can be circulated throughout the house.
Red flags to watch for in a failing limit switch
- The whole system begins to behave differently on a regular basis
- The heating and cooling system refuses to start or run as it should
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