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International Comfort Products PGF030K080A Limit Switch
The limit switch has a sensor located in the furnace that can determine when the heated air is actually warm enough for the main blower to kick in and circulate the air. Limit switches are crucial because if the air is not warm enough the you will lose heat in the ducts and the vents will just blow cool air.
Symptoms limit switch needs to be replaced
- System refuses to start or continue to run like it is supposed to
- The whole system starts to become inconsistent occasionally
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