Bad A/C reversing valve?

dpontrelli · 2007-08-31T21:55:21+00:00

We completed construction on our home in Florida in 7/2006. We have 2Bryant central air units (one 3 ton unit and one 4 ton unit). Lastweek I noticed the 3ton unit couldn't keep up with the cooling duringthe afternoon hours.I called the A/C company that put the units in during construction.Here is what happened:Visit 1: (last week): the tech tells me the system is low on freoneither because it was never filled properly or there is a leak(they'll test for the leak if it gets low again and the problemresurfaces). I received a bill for $90 and was told the unit wouldcatch up that night then should be fine. The tech noted that air wasnow coming out 16 degrees cooler than when going in so I should now befine.Visit 2: after I called and advised there was no change the boss sentout his "best diagnostician" who "made some adjustments" with the airhandler which is up in the attic and noted we now had 18 degrees ofcooling and the unit would be fine once it catches up tonight, butagain there was no change.Visit 3 (today): the boss decided to send a team to figure it out, the2 original techs plus one more. They each seemed to have their owndiagnosis of the problem based on what my wife had overheard(unfortunately I wasn't around the whole time). They had simply toldme the plan was to gather info and have Bryant diagnose the system.Now I'm told the reversing valve needs to be replaced to the sum of$720 even though the unit and part is under warranty (I'm told it's alot of labor to replace it).I called another company who will come in the morning for a freeestimate/2nd opinion. They told me the problem didn't sound likesomething caused by a bad reversing valve but they'd come out andsee.I'm looking for any advice on how to proceed with and what questions Ishould ask, as I'm looking at a lot of money and not confident theseguys know what the real problem is.

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Uncle Monster 19 years ago

Many condensing units have a small factory installed liquid line dryer inside the housing. On any of the systems me and my guys install or disconnect for repair, we in install a replaceable liquid line dryer and sight glass with a moisture indicator. Using flare fittings and sealer called Leak Lock makes it easy to replace the dryer or attach fittings for blowing out the lines or pressure testing. Another product I often use on sticky valves is Supco88, it's like Liquid Wrench for refrigeration and AC units.

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Injecting Supco88 into your system could help free up the reversing valve, expansion valve or clear a clogged port if that what is causing the problem.

[8~{} Uncle Monster

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Clark 19 years ago

wrote in news:17c5b$46dc4925$9440c41e$10980 @STARBAND.NET:

Only to you...

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<kjpro 19 years ago

And anyone with a brain...

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Clark 19 years ago

wrote in news:62a75$46dcc3e7$9440c41e$23205 @STARBAND.NET:

Anyone with a brain see that you are by nature an abusive and antagonistic personality with an obsessive-compulsive disorder. GOOD LUCK.

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Meat Plow 19 years ago

Your broken record "inaccurate bullshit" crap makes no sense whatsoever. I'll give you due credit though for being the pedantic fucktard you are. Regardless of the thousands of your ilk that exist on Usenet, I think you deserve a little recognition.

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<kjpro 19 years ago

Are you still looking for a treat?

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<kjpro 19 years ago

It means that your brother posts s*it that's not correct. Like that better?

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Meat Plow 19 years ago

On Mon, 03 Sep 2007 23:40:07 -0500, kjblows puked:

It means that you are the one and only with that opinion (prove otherwise.)

Call it sadistic but I love watching you squirm.

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Travis Jordan 19 years ago

The tech "felt" the TXV was bad? That's a sure sign of a hack. And without the data Bryant's telephone diagnosis isn't any better.

Yep, your system was hacked.

How do these numbers compare to the specs for this system?

That's because the reversing valve isn't the problem.

With an 18 degree delta T I'd say the TXV is working OK.

As we know, the original installer is a hack. However, the absence of a filter dryer in a properly designed and installed split system isn't fatal in and of itself.

Did you ever get a look at the heat load calculation that the installing company did? Oh yes, that's right... they are a hack. How about the return and supply plenum temperatures? You still might have a return-side duct leak.

The most recent tech seemed to have the most scientific approach to diagnosis; maybe his company can do a heat load calculation for you and tell you if your system is correctly designed.

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<kjpro 19 years ago

otherwise.)

You didn't see where Zpr posted facts regarding the sweating LL?????

Believe what you want, you and your brother know jack s*it about HVAC.

Next time, I suggest that you take some classes and don't rely on alt.home.repair for your training/facts.

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Clark 19 years ago

wrote in news:74b70$46dce158$9440c41e$10736 @STARBAND.NET:

$30781

antagonistic

Are you still drunk? Dance boi, dance.

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<kjpro 19 years ago

More lies...

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Clark 19 years ago

wrote in news:74b17$46e16d21$9440c41e$23671 @STARBAND.NET:

Not one single lie you incompentent drunken fool. You can't refute a single one of my statements and you know it.

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<kjpro 19 years ago

More lies...

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Clark 19 years ago

wrote in news:49ffb$46e20195$9440c41e$13024 @STARBAND.NET:

I know you are but what am I?

Neener, neener, neener! Can't just ignore me can you? Neener, neener, neener! Kj's a clueless retard, kj's a clueless retard! Neener, neener, neener!

I post, you dance. Don't you ever get tired of being the usenet equivalent of a marionette? Just keep dancing drunken monkey boi.

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Meat Plow 19 years ago

You're just as f****ng obsessed as kjp.

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Clark 19 years ago

Meat Plow wrote in news: snipped-for-privacy@news.alt.net:

Naw, I'm just playing with kj 'cause he's such an easy target.

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<kjpro 19 years ago

More lies...

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Clark 19 years ago

wrote in news:894e2$46ec9aaf$9440c41e$12750 @STARBAND.NET:

Score!

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<kjpro 19 years ago

Putz

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