Trane CNT3787 Limit Switch 318820-201 and Ducane packaged units and

and Ducane packaged units and furnaces

this specific model is calibrated for 208V AC operation

offering consistent calibration in low-pressure pneumatic environments

The top of the valve features a calibrated scale

The Amana-Goodman PCBBF118S Control Board is a critical OEM replacement part designed to manage the complex ignition sequence and blower timing for high-efficiency residential gas furnaces

Trane CNT3787 Limit Switch 318820-201 and Ducane packaged units andThe Trane CNT3787 Limit Switch is a critical safety component designed for precise thermal monitoring within residential and commercial furnace heat exchangers. As an OEM Trane replacement part, this 260F CO AUTO limit switch is engineered to interrupt the heating circuit should the internal plenum temperature exceed its fixed 260 degree Fahrenheit threshold. This high limit cutout ensures the system remains within safe operating parameters,