Over the last decade, the landscape of HVAC motors has changed exponentially. While the previous generation of permanent split capacitor (PSC) motors boasted very similar compositions — a capacitor, a neutral, and an L2 wire — electronically commutated motors (ECM) are much more complicated, featuring an array of 4-pin, 6-pin, and plug-and-go inputs; retrofit wire colors; hardwire connections; and more.
In many cases, ECM motors are leaving technicians scrambling for help. When problems arise, many HVACR professionals are turning to one man for help: Chris Mohalley, recipient of The NEWS’ inaugural Best Trainer award.