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International Comfort Products N9MPD125L20A2 Limit Switch
A normal limit switch has a sensor in the air handler that makes the determination if and when the air is warm enough so that it may be pushed through the ducts and out the vents. Limit switches are crucial because if the air never warms up then you will never get hot air through the ducts.
Major signs of a poorly performing limit switch
- The heating and cooling system refuses to start or run longer than 30 seconds
- The International Comfort Products system starts to act differently on more than one occasion
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