Always check the secondary side for shorts before installing a new unit

this normally closed (NC) thermal switch is rated to open at 250°F and automatically close at 220°F once internal temperatures return to a safe operating range

this direct OEM replacement ensures proper electrical sequencing and system safety

the switch must be mounted vertically with the diaphragm in a vertical plane

Trane CNT1015 Limit Switch Els PW 17895 Always check the secondary sideThe Trane CNT1015 is a high reliability OEM replacement auto limit switch engineered for precision thermal management in residential and light commercial HVAC systems. This fixed temperature furnace limit control is factory calibrated to open at 135F and automatically reset when the air temperature drops to 105F, providing critical overheat protection for heat exchangers and downstream components. As a genuine Trane replacement part, it ensures direct