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International Comfort Products GPFM36H080F Limit Switch
A normal limit switch has a sensor located in the furnace that makes the determination when the heated air is warmed to a point to activate the main blower. The reason limit switches exist is because if the air is not warm enough then the house will never get warm enough.
Major clues limit switch is in dire need of a replacement
- The heating and cooling system will not start or run well longer than 10 minutes
- The system is beginning to runs spotty more often than not
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