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International Comfort Products PGAD24B1K4 Limit Switch
Limit switches are built because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air. The limit switch is a type of sensor switch in the air handler that determines when the heated air is warm enough to activate the main blower.
Major indications of a deteriorating critical limit switch
- Your system is beginning to runs uneven on a regular basis
- The heating and cooling system refuses to kick in or will not stay running as it should
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