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International Comfort Products H9MPV050F12B1 Limit Switch
A normal limit switch is a switch in the heat exchanger that decides if and when the air is actually warm enough so that it may be pushed through the ducts and out the vents. The reason limit switches exist is because if the air never warms up then the house will never get warm enough.
Signals of a weak critical limit switch
- The heating and cooling system refuses to start or run well longer that five minutes
- Your system is starting to ramp up but then stops time after time
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