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International Comfort Products GPFM30K080F Limit Switch
One big reason why limit switches are designed that way is because if the warmed air is too cool the you will lose all the heat as the air flows through the ducts. A normal limit switch contains a sensor in the heating area that can determine when the air is warmed to a point for the main blower to kick in and circulate the air.
What symptoms are present when the critical limit switch really needs to be replaced?
- The HVAC system begins to run inconsistently from time to time
- The heating and cooling system refuses to start or run even though max temp has not been reached
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