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International Comfort Products PAB060N1HC Limit Switch
Limit switches exist because if the warmed air is too cool the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch has a sensor in the heat exchanger that senses, or governs, when the air is warmed to a point to activate the main blower.
What are the indications that my limit switch most likely is in need of replacing?
- The system is starting to stop suddenly often
- The heating and AC system will not even start or run longer than 30 seconds
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