Down-draft radiator fan failure

[davidbrady]

Hi M.R.,

You're start-run capacitor may be faulty but more likely your fan motor is shot. My guess is that your motor is lacking lubricant and as it heats up whatever lube is left becomes thinner until the motor seizes. While you're in there in makes sense to give it a new capacitor. (Of course this all assumes that the motor is getting the proper start voltage).

The capacitor is a GE 5uF 370VAC unit which should be available at most HVAC stores and even Napa. I'll need a minute to pull up some fan motor part numbers.