I have a 5 year old Trane XL14i - 3 ton I think. Yesterday I noticed
it getting warm and the blower was running, but the compressor and fan
were off. The contactor was engaged and power was getting to the
I turned everything off for about 10 minutes and then back on. Its
been working fine for 24 hrs. and register temps are right where I
expect - 62F at 110F evap temp and 90F outside temp. I'm wondering if
this is a fluke or if I have a more serious problem. What can I
I agree that's the most likely. If you were able to tell it had power
was that with a meter? Next time it happens check the other side of
the contactor for 240vac. While most techs will replace a contactor
because they don't want a return call, it is possible to repair them.
Usually it is pitted and worn contacts. You can clean them up with a
Yes, I checked power with a meter, but it was only incoming power and
not outgoing from the contactor. The contactor was engaged and
humming, so I assumed it was the cap, but then the fan would have been
on. I just droppd the ball there.
As a precaution, I'll clean the contacts. I'll be sure to post again
if it stops again.
On Jun 1, 9:58 am, firstname.lastname@example.org wrote:
The caps practically never cause intermittent problems. I can see how
you might cycle it once before checking everything and then when it
started that was the end of troubleshooting. I hate intermittent
problems on any thing as they alway seem to go away right after I take
the cover off.
On Jun 1, 7:56 am, email@example.com wrote:
A few years ago my outside unit fan wouldnt kick on first try, I think
the unit was making some noise, I powered off and on a few times and
the fan came on, the tech came out and tested and replaced the
capacitor and said if I had left it for a long time trying to start I
could have burnt out the unit, its been fine for 6 years since, find
what is wrong before it leads to a bigger issue, maybe its the
On 6/1/2010 7:56 AM, firstname.lastname@example.org wrote:
I've had bugs "insects" get into contactors and keep them from closing
completely. Turning off the power to the condensing unit and manually
working the contactor will usually get rid of the dried up insect parts
without having to resort to contact cleaner. A fresh gooey bug is a lot
harder to clean out. I actually have had to clean out whole ant colonies
that have taken up residence in the control compartments of condensing
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