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Payne PA2PNB024000AA Limit Switch
A normal limit switch is a type of sensor switch in the heat exchanger that can determine if and when the air is actually warm enough that it can be circulated throughout the house. Limit switches were created because if the air is not warm enough the you will lose all the heat as the air flows through the ducts.
Key clues poorly running critical limit switch
- The whole system begins to behave erratically more often than not
- The heating and AC system will not initiate or run well longer that five minutes
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