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Problems with air conditioners, etc Ignoramus18860 07-17-2006
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Posted by Ignoramus16532 on July 20, 2006, 12:07 am
>
> Ignoramus16532 wrote:
>> > Okay...one more time: The professional DID a diagnosis, then gave me a
>> > quote for a new compressor, dryer, and capacitor.
>>
>> And one more time, WHAT DID HE SAY WHEN YOU ASKED HIM WHY HE THINKS
>> THAT STUFF NEEDS TO BE REPLACED.
>
> Thought I answered that...really the only other stuff he said was that
> the compressor was pulling 90A and did not kick on so he thought it was
> seized.....but then right before he left he was able to get it to kick
> on. Can a compressor be shot even though it occationally runs okay? I
> thought it would be a go or no go sort of thing.

I also think so as far as being "seized" is concerned.

>> > I do not wish to pretend I know what a multi-meter would be telling me.
>>
>> That's why it should be used to find out.
>
> I wouldn't know what to put where or what it would be telling me...

Then, perhaps, some effort needs to be invested in finding a good
professional.

I mean, yeah, go ahead and replace the caps and see if it helps, if
you insist. But if it does not help, perhaps hiring someone would make
sense if you find someone somewhat honest.

> All I know is the AC will run through about 4 or 5 cycle of on and
> off and then it will throw a breaker...Really that is all the HVAC
> prof. said...Then he checked to see if my comp was under warranty
> and said it would be a couple days before it came in....I since had
> a thrid party (prof) order the comp and have them holding off on
> installing it until I at least try a new cap.
>
> As far as additional diagnosis and forming hypothesis..well I just
> don't know enough about it to do more than I have already done..based
> on what the profs have said they were going to replace.

does it seize at particular time of day? (like midday) and restart in
the evening?

Maybe one of your caps is bad and if th pressure in the system exceeds
something, the compressor cannot start. And then in the evening, when
the refrigerant cools and pressure drops, that one cap can get the
compressor going?

I mean, there has to be something to explain this intermittency.

i

AppliancePartsPros.com, Inc.
Posted by wyredog on July 19, 2006, 10:28 pm
>
> Do you have a wife or anyone else who can turn on the breaker from
> inside while you are outside, listening? Does it pop instantly or
> after some little time? Does the A/C make a humming noise during that
> time?
The outside unit makes a snap or click noise and then the breaker is
thrown..no humming as if the compressor is tryiing to start at all.
>
> The breaker has to match the A/C, you know.

Good of you to mention....but yes I replaced the 30A with a new 30A
>

>
> I dunno, it possibly is not the capacitor. If you have a multimeter
> (as you should) with a capacitance, tester, you can test it (it could
> be bad at 220VAC even if tests OK by the tester, but still it is good
> to test).
>
> Do not assume too much too soon. Could be that something makes the
> motor run harder than it should, for example.
Do you know what would make the compressor harder starting than it
should be but still it runs okay when started?

I think I have a pretty good picture of what is happening ..just lack
the technical knowledge to isolate the problem...II'm a mechanical
designer but know little to nothing about electrical..trying to deduce
this from a mechanical standpoint but am kind of backed into an
electrical "corner".


Posted by Stormin Mormon on July 19, 2006, 10:37 pm
Yes, I do.

Please post the tech specs requested.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
.


Do you know what would make the compressor harder starting than it
should be but still it runs okay when started?

I think I have a pretty good picture of what is happening ..just lack
the technical knowledge to isolate the problem...II'm a mechanical
designer but know little to nothing about electrical..trying to deduce
this from a mechanical standpoint but am kind of backed into an
electrical "corner".



Posted by Stormin Mormon on July 19, 2006, 10:32 pm
We'd like to know a few things like the model number. and the tonnage.

If your neighborhood has been having brownouts.

And if you've ever had your AC professionally serviced. Unit cleaned,
freon levels checked, etc.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
.


Thanks for the info!

I think the cap is the cheapest thing that may be the likely fix. See
what you think:

A few days ago I cam home to a silent outside unit (no fan no
compressor nothing). Found that the 30A breaker was thrown. Turned
it
back on and it flipped off after a couple seconds. Later I tried it
again jsut because I was hot hand had nothing else to think about.
This time it worked...the heat pump turned on and ran as if nothing
were wrong.

So I replaced the breaker hoping it was just to weak. Same scenario
with it. The AC will run ..on ...off on...off through several cooling
cycles then one time it will throw the breaker and that's all she
wrote
until I go into the crawl space and turn the breaker on again.

Other relavent factors: The unit is only 3 years old, Arco Air made
by
Carrier. And it has been record heat here since just before this
began......causing the unit to run very frequently



Posted by wyredog on July 19, 2006, 10:41 pm
I get the feeling several on this site think I tossed a coin to see
what I would start replacing: Here's some history:

A few days ago I cam home to a silent outside unit (no fan no
compressor nothing). Found that the 30A breaker was thrown. Turned
it
back on and it flipped off after a couple seconds. Later I tried it
again jsut because I was hot hand had nothing else to think about.
This time it worked...the heat pump turned on and ran as if nothing
were wrong.


So I replaced the breaker hoping it was just to weak. Same scenario
with it. The AC will run ..on ...off on...off through several cooling
cycles then one time it will throw the breaker and that's all she
wrote
until I go into the crawl space and turn the breaker on again.


Other relavent factors: The unit is only 3 years old, Arco Air made
by
Carrier. And it has been record heat here since just before this
began......causing the unit to run very frequently

When the unit runs it runs great...just doesn't start every
time....Curious...What leads you to suspect the thermostat...it appears
to be functioning normally as does everything else...when it
starts.....start....capacitor...am I really all that "shooting in the
dark?"


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