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Ralph Mowery Ralph Mowery is offline
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Default Why does the 115V-24V transformer keep blowing on my Trane XB80?


"Steve Turner" wrote in message
...
On 4/2/2011 3:37 PM, wrote:
On Sat, 02 Apr 2011 14:10:01 -0500, Steve Turner
wrote:

The original lasted about 6 years. It was made in Mexico by Basler (model
BE25214009 class 2 XFMR; it also has C340041P04 printed on it). The
primary leg says "115V 60HZ 115V", and the secondary says "24V 35VA 24V".
I can't seem to find a replacement for it online anywhere.

The replacement was indeed made in China. It's an Edwards model 599:

http://www.edwards-signals.com/index...d=104&level=15

Perhaps (as you say) it's just cheaply made an not up to the task, and its
subsequent failure has nothing to do with the failure of the first.

Any suggestions on what to do about securing a replacement? When the
first one failed I made quite a few calls to local electrical supply
houses with no luck (and I live in Austin; it shouldn't be hard to find a
suitable replacement) before I found this Edwards transformer. We were
having a hard freeze at the time and I was just happy to find something I
thought would work. This time I'd rather be sure I get something that's
up to the task.


What you got seems to be for door bells. That is for a short on time. The
control board needs one rated for continious duty. You should be able to
just ask for a transformer that is rated for 115 or 120 volts input and 24
volts output. The volt/amp (VA ) rating should be 35. A higher V/A rating
will be ok also. It will just cost more and may be larger in physical size.

There is one on ebay that will work if you don't mind wires insteadof screw
terminals.
Trane Transformer 35806009 TRN-101

It has a 40 VA secondary which should be just slightly higher than needed
and it will run slightly cooler and may last longer than the origional. It
is less than $ 25 including shipping.

I would think there would be a Trane dealer in town that would have
something that would work for you in a large town.