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DeLonghi PACL90 Limit Switch
Limit switches are built due to the fact that if the air never warms up inside the exchanger the you will lose heat in the ducts and the vents will just blow cool air. The limit switch has a sensor in the air handler that determines if and when the air is warmed to a point that it can be circulated throughout the house.
Signals limit type switch is failing
- The heating and cooling system will not begin or will not stay running for any significant length if time
- The HVAC system is beginning to go through the startup sequence but stops quickly on a regular basis
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