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Frigidaire FRP77ETT2A0 Limit Switch
A normal limit switch is a switch located in the furnace that decides if and when the air is warmed to a point for the main blower to kick in and circulate the air. Limit switches are built because if the air is too cool inside the furnace to begin with, the you will lose heat in the ducts and the vents will just blow cool air.
How do you know if your critical limit switch is almost going bad?
- The system is starting to run erratically often
- System will not begin the ignition sequence or continue to run like it ought to
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