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International Comfort Products N9MP2100J20A1 Limit Switch
The limit switch contains a sensor in the air handler that decides when the air is warm enough for the main blower to kick in and circulate the air. A limit switch was crafted due to the fact that if the air inside the furnace is too cool the you will lose heat in the ducts and the vents will just blow cool air.
Clues to watch for to know limit type switch is going to die
- The heating and cooling system will not begin or run well like it should
- The HVAC system is starting to act differently on a regular basis
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