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Old 07-04-2010, 01:19 PM   #1
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Can I check my compressor before replacing? Wire was fried


My central air quit working yesterday. I did the typical troubleshooting and determined the compressor was not kicking on.

So I called out an expert. He found the capacitor/starter? was bad.
Replaced that I noticed a clunk in the compressor when it kicked on.
So he took the cover off and noticed the red wire to the compressor was melted, including the terminal that it was attached to.

He said there was not enough terminal to connect the wire, so I need a new compressor.
He also said that the compressor went bad melting the wire, or the wire was loose which caused it to arc and melt.

I would hate to have to replace the compressor just for a bad terminal.
I suppose I could solder a wore to the stub sticking out?
Is this a common problem?

The AC unit is 8 years old.

He also said $5000 to replace AC unit and 10k to replace AC and furnace.
Sounds steep to me...

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Old 07-04-2010, 01:34 PM   #2
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Can I check my compressor before replacing? Wire was fried


5 G's

Did he work for Halliburton?

Where do you live?

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Old 07-04-2010, 01:39 PM   #3
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Can I check my compressor before replacing? Wire was fried


Indiana - close to Michigan.

He said 5k cause I would be switching from the old freon to the newer stuff.
I would need a new A-coil..
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Old 07-04-2010, 01:49 PM   #4
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Can I check my compressor before replacing? Wire was fried


http://www.aaadiscountheatingandair.com/

Is he putting in a Lennox, Trane or Carrier?
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Old 07-04-2010, 01:52 PM   #5
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Can I check my compressor before replacing? Wire was fried


Brazing or soldering a new terminal or wire or that stub, is really really dangerous to attempt. Since the refrigerant in the compressor would become over heated. And if the disc ruptures. You would have flaming oil and refrigerant come out. And it would come out worse then having a blow torch aimed at you.

So don't attempt to do that.While there are repair kits made. It depends how much of the round stub it left. As far as weather or not a kit will work.
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Old 07-04-2010, 01:52 PM   #6
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Can I check my compressor before replacing? Wire was fried


I'd get another tech. out to look at it. If the compressor did burn out and contaminate the entire system it will be expensive to repair.

However I would not immediately condem the compressor just because an external wire is fried. Make sure the new tech. ohms out the compressor. I'd also check to see if the unit is still under warranty. It's possible the compressor could still be under warranty.

A lot of techs get a commission to sell new systems. Make sure you know ALL the options beforehand.
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Old 07-04-2010, 04:42 PM   #7
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Can I check my compressor before replacing? Wire was fried


Compressor could still be under warranty. Most units have a 10 year on the compressor. There's clamp on lead ends but you need at least a 1/4" for them to hold.
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Old 07-04-2010, 07:21 PM   #8
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Can I check my compressor before replacing? Wire was fried


Quote:
Originally Posted by theedudenator View Post
He also said that the compressor went bad melting the wire,
or
the wire was loose which caused it to arc and melt.
Overcurrent will ruin the wire insulation all along the length of the wire.
A bad connection will only melt stuff local to the connection, say within 3" or so.
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Old 07-04-2010, 11:46 PM   #9
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Can I check my compressor before replacing? Wire was fried


The wire was just burnt on the end.
Not the entire length.

I need to get in there an look and see what was left.
I did a google search and see there are repair terminals I can purchase.

How do I check the compressor. I have a meter, what is the range?
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Old 07-05-2010, 03:06 AM   #10
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Can I check my compressor before replacing? Wire was fried


You mentioned a 'clunk" noise on start. That would indicate internal compressor motor damage. The motor could have been running at higher amperage. The compressor oil should be checked by pro for acid. If there is acid present then it's time to get a new one.

This condition could have been caused due to a lack of maintenance
as in a dirty condenser.

You can't really compare prices here because they are different across.

But speaking for "michiana" area, I would say you are being offered a higher end system that qualafies for a $1500 fed tax credit.
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Old 07-05-2010, 05:04 PM   #11
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Can I check my compressor before replacing? Wire was fried


I got inside it today to look at the terminal myself.
Looks like corrosion to me.
The terminal is still present.

I crimped on a standard connector and the unit fired up with no issues. House is cooling now.

I ordered a set of the screw on type connectors for terminals that are corroded.

I really think the company was just trying to sell me a new AC unit...
They came out on the 4th with no extra charge...
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Old 07-05-2010, 10:13 PM   #12
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Can I check my compressor before replacing? Wire was fried


Anyone have an experience with these?

http://www.term-lok.com/
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Old 07-05-2010, 11:04 PM   #13
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Can I check my compressor before replacing? Wire was fried


They work on some. Don't last on some.
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Old 07-06-2010, 12:30 PM   #14
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Can I check my compressor before replacing? Wire was fried


Are there better options?
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Old 07-06-2010, 01:52 PM   #15
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Can I check my compressor before replacing? Wire was fried


Decision Theory 101: if a new system is $7k and the term repair kit is $20, almost certainly get the kit. It's cheap and the certainty is high that it will fix it.
The worst case is a fix of uncertain outcome that is costly, like putting in a new control board that may promptly blow out because the root cause wasn't found & fixed.
This terminal thing is the opposite.

Or make your own term kit with a drill, a 4-40 or 3-56 machine screw w/nut and some washers.
http://www.home-theater-accessories-...0connector.jpg


Last edited by Yoyizit; 07-06-2010 at 09:05 PM.
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