Generic 3-speed ceiling fan circa 80s or 90s makes buzzing noise at highest speed. I don't know what brand this is, I don't have a model number, but hopefully it's a similar enough widespread design.It makes excessive motor noise at the highest speed only. It sounds likely electric, like a buzzing, and it's definitely not the usual "motors just make noise" thing. It's something intrusively loud, and the noise seems to come and go some days, due to indeterminate factors.It's also not balanced, and is not grounded properly, but I don't know how likely that is to cause what I'm hearing.
>>2966103OP here.Actually, the grounding might be fine. It's mounted to grounded conduit, and only the ground wire isn't screwed down under the cap.
are you at all technically inclined? if so you can test the run capacitor with a multimeter that also tests capacitance (should be a black box with 2 to 5 wires coming out of it) 90% of the time the diagram of what values each capacitor should be
>>2966105>are you at all technically inclined?Yes, but I don't have a multimeter that can test capacitance. I'll have to get one, I guess.
Depending on the noise, it could be a failed bearing.