Testing ECM motors that are not fully installed will cause the motor to ramp up and down in RPM. Variable Drive Certified by Trane. I have 25 years in the HVAC industry as a service technician working mainly with residential heating and cooling systems here in Florida.
This is a Used Carrier Jakel Draft Inducer Blower Motor HC21ZE122A J238-112-11202. 115V 3000 RPM. I have 25 years in the HVAC industry as a service technician working mainly with residential heating and cooling systems here in Florida.