I've been combing this site for information, but I have a question I can't find
an answer for.
Here's our situation -
1. Last friday, we noticed the outside HVAC unit was making a loud
humming/buzzing and the fan wasn't running.
2. We turned it off & on from the inside of the house with no change. Buzzing
stops when outside unit is off, indoor unit blows fine, the thin copper line was
burning hot at the inside unit (didn't check the outside).
3. Started looking here & saw the stick test. Fan moved freely with a stick, but
we still didn't turn it back on for about an hour. In the meantime, my husband
checked the fuses on the disconnect & called his HVAC buddy who seems to be on
4. When we put the fuses back in the disconnect & turned it back on, everything
started up fine & it ran good until sometime last night (today is Tuesday). We
had a ton of ran dumped on us last Friday from a tropical storm & were hoping
maybe something got flooded or something & we could make it until my husband's
friend is available.
5. So, today we left it off for about an hour, tried it & it still buzzed. Fan
turns freely with a push. My husband went out to take off the access panel to
pull the capacitor (all rusted up) to get a replacement & decided to pull the
fuse & put it back on one more time just to see. Starts up like a charm.
He's going to get a new capacitor, new fuses & a new motor (just in case because
with our luck it would run again until next friday night & go out for good in
100 degree heat) - but I can't understand why pulling those fuses & putting them
back in does anything. Is it just coincidence that we finally let everything
cool off enough?
The outside unit is probably close to 15 years old & the inside unit is the
original with the house (from 1988) so we're due for a whole new setup, but I'd
like to make it through the summer & have the replacement done in the spring or
fall when the outdoor temps are more bearable.
Thanks in advance for your help