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Carrier 25HNA660A0030020 Limit Switch
The main reason limit switches are made is because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air. The limit switch is a switch in the heat exchanger that can determine when the air is actually warm enough so that it may be pushed through the ducts and out the vents.
Important hints limit switch is in need of replacing
- The HVAC system is starting to become unpredictable on more than one occasion
- The HVAC system is unable to start or run for any length of time
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