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Carrier 48XZN036060300 Limit Switch
The limit switch has a sensor in the air handler that determines when the air is actually warm enough to activate the main blower. One big reason why limit switches are designed that way is because if the warmed air is too cool then you will never get hot air through the ducts.
Warnings critical limit switch is on its last leg
- System refuses to start or continue to run like it should
- Your system is starting to ramp up but then stops time after time
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