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Haier HPR09XC7 Limit Switch
The limit switch has a sensor in the heat exchanger that can determine when the heated air is actually warm enough that it can be circulated throughout the house. Limit switches are built because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts.
Some clues critical limit switch needs a replacement ASAP
- The heating and cooling system refuses to start or continue to run longer that five minutes
- The Haier system starts to ramp up but then stops often
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