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Payne PY2PNB024040AA Limit Switch
Limit switches are crucial because if the warmed air is too cool then the house will never get warm enough. The limit switch has a sensor in the heating area that determines when the air is actually warm enough for the blower to be activated.
Elements of a barely functioning critical limit switch
- The heating and cooling system refuses to start or run well for any significant length if time
- The system starts to run inconsistently occasionally
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