These HVAC fan motor ECM by Genteq are bad quality and they go bad every few years. DIY replacing them is very easy if you are a handy person and know your specific ECM programmed part number. saves you a lot of money to have an HVAC guy to do it and they will sell you other thing you don't need.
Mine is a Rheem 3 Ton air handler with a 1/2 hp motor for 1200 CFM. the new ECM 3.0 part number is 51-104904-10, programmed for this air handler.
I have another 2 air handlers with a 4 Ton and a 5 Ton, which all 3 motor ECMs will burn out every few years and have to replace the ECM for $400 ea part. perhaps the static pressure gets higher as the system ages, but the air flow in general is very good. the filter is good, the coils are fine...
the ECM 3.0 is still a bad design and bad quality. they still fail the same way as the 2.3. with today's EV motor technology advancements in the past 10yrs, Genteq needs to fix their ECM designs or charge a lot less for this simple module.
