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Lennox HPXB15-024 Limit Switch
The limit switch is a type of sensor switch in the heating area that decides when the heated air is warm enough so that it may be pushed through the ducts and out the vents. The reason limit switches exist is due to the fact that if the air inside the furnace is too cool the you will lose all the heat as the air flows through the ducts.
Key indicators that my limit switch is not working right?
- The HVAC system is unable to start or continue to run longer than 10 minutes
- The system begins to become unpredictable often
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