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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.

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