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

In article ,
"Ralph Mowery" wrote:

"WW" wrote in message
. ..

but it *could* mean that the transformer has a thermal fuse. If so, it's
an easy and dirt cheap fix.


Smitty... All the transformers like that type that I have opened have the
thermo fuse underneath the taping over the windings. I carefully get to it
and add a 1 amp fuse in place of it. WW


Why a 1 amp fuse ? If on the 120 volt size, it would be over twice the
needed value and if on the secondary side, it would be too small. Also it
would not be a thermal overload,but a current overload fuse.


Yeah, I'd say either bypass it or replace it with a new thermal fuse.
Putting a current fuse in there seems odd.