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International Comfort Products NTPM075GFA1 Limit Switch
The limit switch has a sensor located in the furnace that senses, or governs, when the heated air is warm enough for the main blower to kick in and circulate the air. Limit switches are built due to the fact that if the air never warms up inside the exchanger the you will lose heat in the ducts and the vents will just blow cool air.
Red flags of a barely functioning limit switch
- Your International Comfort Products system will not begin or will not stay running longer than 30 seconds
- The whole system is starting to initiate and then stops often
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