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International Comfort Products NTN3075FBA1 Limit Switch
The main reason limit switches are made is 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. A normal limit switch contains a sensor in the heating area that can determine when the heated air is warm enough that it can be circulated throughout the house.
How do you know when your limit type switch really is about to go out?
- The heating and AC system will not begin nor will it stay running like it ought to
- The whole system is starting to erratically frequently
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