AC unit buzzing and humming but the fan not working
#1
Member
Thread Starter
Join Date: Jan 2011
Location: usa
Posts: 35
Upvotes: 0
Received 0 Upvotes
on
0 Posts
AC unit buzzing and humming but the fan not working
My Trane unit is about 12yrs old. It was working great until a couple hrs ago. Suddenly I can hear that the unit is on by its humming buzzing sound so I kept manually rotating the fan with a stick then it started running again. But I felt that it was still blowing warm air through the vent.
I have another unit next to it and I can tell the fan's not rotating as fast on the troubled one. Would that be the reason for the warm air? I don't think the freon leaked out suddenly 'cuz it was blowing cold air just a couple hrs ago before the fan stopped.
Will this require a new capacitor and is it an easy DIY job?
I have another unit next to it and I can tell the fan's not rotating as fast on the troubled one. Would that be the reason for the warm air? I don't think the freon leaked out suddenly 'cuz it was blowing cold air just a couple hrs ago before the fan stopped.
Will this require a new capacitor and is it an easy DIY job?
#2
The fan must be running full speed to cool the compressor and the condenser coil.
Will it require a new capacitor ? Maybe. If you have a capacitance setting on a meter you could check it. If you have no way to check it ...... it would be cost effective to replace it. Easy to replace. Make sure the outside condenser is powered off before working on it.
Will it require a new capacitor ? Maybe. If you have a capacitance setting on a meter you could check it. If you have no way to check it ...... it would be cost effective to replace it. Easy to replace. Make sure the outside condenser is powered off before working on it.
#3
Member
Thread Starter
Join Date: Jan 2011
Location: usa
Posts: 35
Upvotes: 0
Received 0 Upvotes
on
0 Posts
Thanks! It looks like I can just take pic first then replace it the exact same way. If I turn the AC switch off in the circuit box, it should kill all the power for me to safely work, right?
#4
It should, however most A/C installations have an electrical disconnect outdoors near the condenser unit. I would suggest that you disconnect the power both in the panel and at the outdoor disconnect, just to be certain that the power is off.
#5
Hi, Turn off power first , then touch a screw driver across the 2 terminals on the capacitor before you try to replace it, just in case it is still charged.
Geo
Geo