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International Comfort Products NTC5075BFC1 Limit Switch
The main reason limit switches are made is because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch is a switch in the heating area that decides when the heated air is actually warm enough for the main blower to kick in and circulate the air.
Subtle hints main limit switch has very little life left
- The HVAC system refuses to start or will not stay running longer than a minute
- The system is starting to go through the startup sequence but stops quickly repeatedly
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