Wife called me, house temp 81* set at 78*, fan is running.
I went outside, compressor and fan on condenser unit are running.
I removed filters and temp dropped about 1/2 degree. I shut down the
unit and cleaned filters, evaporator and everything else (about 6 yrs old).
I started unit and went outside the compressor was running but the
fan was not. I grabbed a stick and gave it a push, it started turning
very slowly and picked up speed until it seemed at full speed.
I removed the fan assembly and lubed both bushings of the motor,
the motor was very hot, I could not handle it and had to get gloves to
manipulate the motor. The motor did not seem to be very sticky regarding
the bushings, ie. it did rotate a little after being spun.
So now the house is cooling, BUT I suspect, when the unit shuts off
and then has to restart, the fan motor MAY NOT start and this will cause
the compressor to shut down, and the house will not cool again.
I deciphered the schematic diagram and see that OFM is the Outdoor
Fan Motor, and I also see it has a capacitor start circuit. The
capacitor is a double section 45uf/5uf, the 5uf is in series with the
fan motor start winding.
I think I'll invest in a new capacitor.
While reinstalling a cover outside, the compressor started, BUT the
fan didn't. I grabbed the stick and gave the blade a push, the fan
started running. I decided to check a squirrel cage fan I have for the
cap. The squirrel cage fan has 5uf cap, just what I need. I wired it
in place of the existing 5uf cap and the fan started on the next cycle.
I ordered a new cap on Amazon for $17.15, probably cheaper than the
local HVAC parts house.
Stormin, I'm a little surprised to have the response I got from you.
Over the years, you have been the person to help out the homeowner,
while others here just felt offended because a DIYer got the job done
and with just some knowledge. They felt like Rodney Dangerfield, "got no
respect, I tell ya, no respect".
I forgive you, and the love flows both ways!
I got lucky when I happened to be present when the compressor started
and the fan didn't. The fan had intermittent operation, ie. I did see it
running while troubleshooting, but then it didn't start the next time.
Another update, my HVAC tech brother-in-law stopped by and I told him
what happened, he said he had a 45uf/5uf in his van, (by this time I had
placed an Amazon order for a new cap at $17.15) he said the part is only
$10. I paid him and installed the new capacitor. It is working fine.
Do you agree that he can get the cap for $10? I don't want him to
short change himself, and he would do that.
What else do you say to a poster who doesn't
ask any questions? Your post read like a
facebook entry, except no selfie pictures.
I looked in one parts catalog. I very seldom
share wholesale prices on this list, but he's
low by about half.
Good for you. You saved at least $250 on your capacitor replacement.
We seem to have become a society where most aren't willing to learn how
to do things for themselves. This week I learned how to replace a
serpentine belt on my car. I replaced belts on my old cars, but I
didn't understand how the (newer) belt-tensioner mechansim worked. Now I
know... The week before I watched a video or two on how to replace a
thermostat, "just for fun".
A couple weeks before that I replaced the transmission in my
lawnmower. It's a lifestyle.
The internet has so much information on a wide variety of repairs,
it makes it an option to diy rather than call a professional.
A friend recently had a part break on the shifter of his car.
He did a search and found a video on youtube with his exact problem
on his model car. The video even pointed out exactly where you were
going to have difficulty, but if you just kept attempting the step
the part would fall into place. The video showed a place to order the
part over the internet.
I inherited an air compressor from my dad, but it did not work.
I already had an air compressor so it sat unrepaired for years. I had
time and decided to repair it. I found an exploded view, but still
was not able to make it work. It had a problem in the check valve
area. I got help on a homeowner DIY group from someone that had the same
There are many groups with experienced people willing to help
someone less experience get a repair performed. Unfortunately
this group does not have a lot of people willing to help. I find
that HVAC repair people on the internet as a whole are not willing to
help out the DIYer. I have searched several times and have not found an
HVAC group will to give info the DIYers. (I think it is because you need
a superior intellect to understand HVAC) ;-)
You can get auto repair info, home repair info, tool repair info,
electronic equipment info, machine tool info, all kinds of hobby info,
etc, but the HVAC group are tight lipped.
And that is why I posted my "I did it myself" post, just to rub in
the Rodney Dangerfield complex to the non helpers.
But I'm thankful for Stormin, he has helped over the years.
Thanks for the dissection, although I knew what I said.
My info may help another DIYer that comes here looking for help
when you're not here.
Stormin, I've tried to get help here enough that I find it rare
for anyone wanting to help a homeowner. I wouldn't have expected a lot
of input if I did ask a question.
But, I still have love for you!
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