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Carrier FY4ANF036000 Limit Switch
A normal limit switch is a switch in the air handler that decides when the heated air is warm enough for the main blower to kick in and circulate the air. Limit switches were created because if the warmed air is too cool then you will never get hot air through the ducts.
Clues limit switch is dead
- The Carrier system is beginning to run erratically more than once
- Your Carrier system refuses to start or will not stay running longer than 10 minutes
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