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International Comfort Products N9MP1100F14C1 Limit Switch
A normal limit switch contains a sensor in the heating area that makes the determination when the air is warm enough for the air to begin normal home circulation. Limit switches are built 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.
Subtle cues of a defective limit switch
- The whole system begins to run erratically on more than one occasion
- System refuses to start or will not stay running like it should
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