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International Comfort Products C9MPD080J16C1 Limit Switch
Limit switches exist because if the air is too cool inside the furnace to begin with, the you will lose all the heat as the air flows through the ducts. A normal limit switch has a sensor located in the furnace that determines when the air is actually warm enough for the main blower to kick in and circulate the air.
Subtle cues poorly running limit type switch
- The heating and cooling system will not even start or will not stay running like it ought to
- The whole system is beginning to act differently on more than one occasion
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