[rustynails36]

The fan motor only works when the cover panel is removed... not sure what the issue is. The motor sounds weak when it starts up, could it possibly be a relay? I honestly have no idea. It's a 1985 TRANE model. I would appreciate any input. thank you

 

[PoleCat]

With the limited data you offer I will guess maybe a bad capacitor?

 

[beenthere]

Relay probably wouldn't work with the panel off any better then it would with the panel on.

Check capacitor as said above.

 

[rustynails36]

changed the capacitor, still having the same issues... When i remove the cover that accesses the fan and then turn on the air handler it works. So then i replace the cover and it continues to work until the next time the air handler kicks on and tries to heat the upstairs... it sounds like a noise is coming from the fan motor area... it's an annoying buzzing/humming sound with some crackling noises.... do i need to change the fan motor?

 

[rustynails36]

also, i had the capacitor checked and it was a little weak so that's why i changed it...

 

[beenthere]

Sounds like a wire is being moved or pinched when you close the panel.

 

[PoleCat]

Burned contacts on an old relay can give good and bad connections intermittently. Plus you may also want to rule out contact with wiring or blower when closing the unit.