Functional Devices TR50VA009 Transformer 320720-756 it ensures the start winding

it ensures the start winding is energized only for the fraction of a second required to reach operational speed

or visible thermal stress on the module's circuit board

depending on the specific module revision

Look for visible water staining near the inducer

Functional Devices TR50VA009 Transformer 320720-756 it ensures the start windingThe Functional Devices TR50VA009 is a versatile, high performance multi tap control transformer designed for demanding HVACR and building automation applications. Engineered with a 50VA power rating, this unit features a triple primary voltage configuration compatible with 120Vac, 208Vac, and 240Vac inputs, outputting a stable 24Vac secondary voltage. A standout safety feature is the integrated manual reset circuit breaker for overcurrent protection,