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From: brassplyer on 4 May 2010 18:26
Replaced both the fan cap and compressor cap and it's runnin' like a
champ now. The guy at the parts place put a meter on them and said the
fan cap was on its way out and the compressor cap was kaput. The shape
on the compressor cap is different - this one is oval, the old one was
cylindrical about like an old car coil. However the ratings are the
same and it appears to work.

Apparently it doesn't matter which side the connectors get attached
to? I.e. there's not a "pos" and "neg"? It seems to be running fine.

One thing that makes me curious - I noticed that even with both the
breaker for the A/C compressor on the main panel and the exterior
breaker at the compressor turned off, when I turned on the air
handler, the compressor relay switch still activated. I thought if the
breakers are off, it interrupted the circuit to the compressor and
nothing should get to any part of the unit?

Thanks again.
From: Alexander on 4 May 2010 19:11
brassplyer wrote:
> Replaced both the fan cap and compressor cap and it's runnin' like a
> champ now. The guy at the parts place put a meter on them and said the
> fan cap was on its way out and the compressor cap was kaput. The shape
> on the compressor cap is different - this one is oval, the old one was
> cylindrical about like an old car coil. However the ratings are the
> same and it appears to work.
>
> Apparently it doesn't matter which side the connectors get attached
> to? I.e. there's not a "pos" and "neg"? It seems to be running fine.
>
> One thing that makes me curious - I noticed that even with both the
> breaker for the A/C compressor on the main panel and the exterior
> breaker at the compressor turned off, when I turned on the air
> handler, the compressor relay switch still activated. I thought if the
> breakers are off, it interrupted the circuit to the compressor and
> nothing should get to any part of the unit?
>
> Thanks again.

Looks like that is near Chicago.. Heavy Union country. Be interesting to
know who is superceding the service companies over there.
From: Oscar_Lives on 4 May 2010 19:20

"brassplyer" <brassplyer(a)yahoo.com> wrote in message
news:38468053-2e91-47de-9a2f-d96f4fcb1581(a)y36g2000yqm.googlegroups.com...
> Replaced both the fan cap and compressor cap and it's runnin' like a
> champ now. The guy at the parts place put a meter on them and said the
> fan cap was on its way out and the compressor cap was kaput. The shape
> on the compressor cap is different - this one is oval, the old one was
> cylindrical about like an old car coil. However the ratings are the
> same and it appears to work.
>
> Apparently it doesn't matter which side the connectors get attached
> to? I.e. there's not a "pos" and "neg"? It seems to be running fine.
>
> One thing that makes me curious - I noticed that even with both the
> breaker for the A/C compressor on the main panel and the exterior
> breaker at the compressor turned off, when I turned on the air
> handler, the compressor relay switch still activated. I thought if the
> breakers are off, it interrupted the circuit to the compressor and
> nothing should get to any part of the unit?
>
> Thanks again.


You must have the "alternative power source" option on your unit. Most of
these were battery backups that help keep the polarity correct during
brownouts.


From: Stormin Mormon on 4 May 2010 20:07
That's the kind of ignorance that gets people hurt. "but I
thought...."

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"brassplyer" <brassplyer(a)yahoo.com> wrote in message
news:38468053-2e91-47de-9a2f-d96f4fcb1581(a)y36g2000yqm.googlegroups.com...
Replaced both the fan cap and compressor cap and it's
runnin' like a
champ now. The guy at the parts place put a meter on them
and said the
fan cap was on its way out and the compressor cap was kaput.
The shape
on the compressor cap is different - this one is oval, the
old one was
cylindrical about like an old car coil. However the ratings
are the
same and it appears to work.

Apparently it doesn't matter which side the connectors get
attached
to? I.e. there's not a "pos" and "neg"? It seems to be
running fine.

One thing that makes me curious - I noticed that even with
both the
breaker for the A/C compressor on the main panel and the
exterior
breaker at the compressor turned off, when I turned on the
air
handler, the compressor relay switch still activated. I
thought if the
breakers are off, it interrupted the circuit to the
compressor and
nothing should get to any part of the unit?

Thanks again.


From: The Daring Dufas on 4 May 2010 21:45
brassplyer wrote:
> Replaced both the fan cap and compressor cap and it's runnin' like a
> champ now. The guy at the parts place put a meter on them and said the
> fan cap was on its way out and the compressor cap was kaput. The shape
> on the compressor cap is different - this one is oval, the old one was
> cylindrical about like an old car coil. However the ratings are the
> same and it appears to work.
>
> Apparently it doesn't matter which side the connectors get attached
> to? I.e. there's not a "pos" and "neg"? It seems to be running fine.
>
> One thing that makes me curious - I noticed that even with both the
> breaker for the A/C compressor on the main panel and the exterior
> breaker at the compressor turned off, when I turned on the air
> handler, the compressor relay switch still activated. I thought if the
> breakers are off, it interrupted the circuit to the compressor and
> nothing should get to any part of the unit?
>
> Thanks again.

The 24 volts AC is coming from the furnace which is on a separate
circuit. From the furnace, the control voltage goes to the thermostat
then back to the furnace where control voltage is sent to the condensing
unit outside. It's not magic, it's all done with wires. 8-)

TDD
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