Category: HVAC-R

ECM Multi-Speed Blower Motor Troubleshooting!

In this HVAC Training Video, I Show How Several ECM Multi-Speed Fan Motors Work and How to Troubleshoot Them to Determine the Problem. I Show Measurement Voltages, What Should Happen, and Where to Visually Inspect.
Blower Motor Won’t Shut Off, Blower Won’t Turn On. Blower Ramps Up and Down. ECM Motor Terminal Wiring. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.

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