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International Comfort Products CHP036AKA1 Limit Switch
The limit switch contains a sensor in the heat exchanger that makes the determination when the heated air is warmed to a point for the air to begin normal home circulation. The reason limit switches exist is because if the air never warms up then you will never get hot air through the ducts.
Symptoms to watch for in a failing main limit switch
- The International Comfort Products system is starting to become unpredictable on a regular basis
- The HVAC system refuses to start or run even though max temp has not been reached
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