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Trane TCP060F300AB Limit Switch
The limit switch has a sensor located in the furnace that decides if and when the air is actually warm enough for the blower to be activated. Limit switches exist because if the air never warms up the you will lose all the heat as the air flows through the ducts.
Indications of a failing main limit switch
- The Trane system is starting to ramp up but then stops repeatedly
- The heating and AC system will not even start or run well like it should
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