ECM Fan Motor Won’t Turn On or Won’t Shut Off on HVAC

Like craig Said. Fails at the Module. not the motor I know This for sure. Because I've Fixed.six ECM motor instead of replacing the module or the motor itself. On the high voltage side of the module There is a component on the board that is called a rush current limiter. This component, after a period of a few years blows a leg off the board. Due to heating of the component. $3 part from Melzer electronics out a Texas and you're up and running again. The latest one that I Fixed. Was Six years old and The rush current limiter blow a leg off the one side of the Component.. replaced with new one And still going 4 years now.

Excellent video, I recommend your videos to any of my friends who are interested in learning controls. It amazes me how how thorough your training is. I have gone to training that cost money that were not as good as your videos.

Helpful video!

I know you have the heart of a teacher, but you should CHARGE for all this knowledge. Case in point… you saved my son at least $300 plus in labor. He calls me up… 8 year old Bryant heat pump. Blower with an X13 would run all the time. Using one of your videos… I pulled the thermostat and it still ran. Checked G to C no voltage. Pulled the fan speed wires on the X13… still ran. Bad module. Replaced it with the Rescue Ez13 because it had both pigtails. All is well. i charged him a 12 pack of beer. 😁

When troubleshooting an ecm motor I like to also use the supco ecm tester as insurance.

Hi so about the fonction of test in this board how it works or runs ?
Thank you for All

Thanks again Craig 👍Great work your like the MVT (Most Valuable Technician) of the Trade 😎

Excellent!
What would you do if you lost the programming on the red wire?

Six years ago my Rheem air handler ecm fan motor stopped working. I determined the ecm fan module went bad – I assume it was from a voltage surge from a storm around that time. I was able to locate and purchase a new GE gentec module on eBay for $250 (the dealer flashed/programmed the replacement module for my specific system application). I did not purchase a new complete GE gentec ecm motor assy as at that time it was $700. The air handler fan motor w/the replacement fan control module is still working fine to this day. Properly diagnosing the module as the issue for fan not working was very difficult as all I had to go on was the wiring diagrams located on the air handler. At that time I didn't even know that an ecm fan assy that uses DC power to operate the fan motor was a thing. Had I had this video back then as an explanation of system operation it'd of saved me several hours of troubleshooting. Back then I couldn't find any info online on how the ecm fan motors worked or their elec/system diagnosis procedures.

Great video, well explained, good camera quality and clear voice. Thanks always Craig, you teach and explain great.

As always I like your videos every day I work as residential PM technician and these videos are great resource to refresh my knowledge. Again as always your one the top technician and teacher…

Another banger. 🤘⚡️🤘✨✨✨

I always follow you, your videos are better than school and work place

You know it’s going be a great day when you have a new video and a cup of coffee for breakfast.