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Panasonic CZ-18BT1U Limit Switch
A normal limit switch is a switch in the air handler that makes the determination when the air is warm enough for the blower to be activated. Limit switches were created due to the fact that if the air inside the furnace is too cool the you will lose heat in the ducts and the vents will just blow cool air.
Subtle hints main limit switch needs replacing
- The HVAC system will not even start or will not stay running for any significant length if time
- Your system is beginning to become unpredictable occasionally
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