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International Comfort Products T8MPN125J20A1 Limit Switch
The limit switch has a sensor in the heating area that determines when the heated air is warmed to a point for the main blower to kick in and circulate the air. A limit switch was crafted because if the air is too cool inside the furnace to begin with, the you will lose heat in the ducts and the vents will just blow cool air.
Warnings limit switch is dying
- The HVAC system will not begin the ignition sequence or continue to run like it is supposed to
- The whole system is beginning to run erratically frequently
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