Description
The Trane CNT01015 Hi Limit Control L135-30F operates as a temperature safety switch, such as in furnace and air handler units. It operates using a heat-sensitive element that opens the electrical circuit to prevent excessive heat buildup and recloses below the reset differential when conditions drop. The component is positioned near the heat exchanger or discharge air path inside the unit cabinet and connects to the burner or heating circuit wiring. In HVAC systems it interrupts operation during over-temperature conditions, protects internal components from thermal stress, and restores normal cycles once safe temperature levels return.
