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International Comfort Products GPFM36L080F Limit Switch
Limit switches were created because if the air is too cool inside the furnace to begin with, then the house will never get warm enough. A normal limit switch contains a sensor in the heat exchanger that can determine if and when the air is warmed to a point that it can be circulated throughout the house.
What are some indications that my chief limit switch needs replacing?
- Your system begins to erratically on a regular basis
- The heating and AC system will not start or continue to run longer that five minutes
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