Trane MOT18954 Motor R-407C often referred to as the

often referred to as the See-All sight glass

the Trane furnace control board sequences the inducer motor pre-purge

and York using included wiring harnesses

replacing it with a new 12988-002 can help stabilize the flame pattern and correct ignition issues caused by improper air-fuel mixing

or the furnace failing to ignite due to a "pressure switch open" fault code

Trane MOT18954 Motor R-407C often referred to as theThe Trane MOT18954 is a 3 4 HP furnace blower motor designed for critical air handler and packaged unit applications. Operating on 200 230V, this 48 frame motor delivers a consistent 1075 RPM to maintain rated static pressure across diverse duct configurations. As a 3 speed motor, it allows for granular airflow adjustment, optimizing the performance of Trane HVAC systems. Built for OEM compatibility, the MOT18954 features a 1 2 inch shaft and a multi