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Lennox XP13-048 Limit Switch
The limit switch is a type of sensor switch located in the furnace that determines when the air is warm enough that it can be circulated throughout the house. Limit switches exist because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts.
Important signs limit switch should need replacing
- The Lennox system starts to shut down unexpectedly often
- Your Lennox system is unable to start or run longer that five minutes
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