2002 source1 hvac control

D

Deodiaus

Guest
I have an Source1 HVAC control which is failing. It works. turns on
the heat, but shuts off prematurely. Does anyone know if it is
possible to fix it, or is that too complicated to try fixing by
replacing the heat damaged resistors and diodes?
see front at
http://deodiaus.tripod.com/source1f.jpg
back at
http://deodiaus.tripod.com/source1b.jpg
Thanks
 
Flatbed scanner for circuit board? Neat! I didn't see any
really bad solder connections. A friend of mine is a
computer repairman. I've done a bunch of circuit board
solder, but that was decades ago. I'm sure I've still got
the touch. You may have a computer guy near you who can look
it over.

At the moment, I'll agree with my esteemed colleague, Steve.
And suggest you call a furnace tech. Sounds like the board
isn't the problem.

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


"Deodiaus" <deodiaus@gmail.com> wrote in message
news:e416cd99-93e7-43e6-b36a-d5c175c4b805@k17g2000yqh.googlegroups.com...
I have an Source1 HVAC control which is failing. It works.
turns on
the heat, but shuts off prematurely. Does anyone know if it
is
possible to fix it, or is that too complicated to try fixing
by
replacing the heat damaged resistors and diodes?
see front at
http://deodiaus.tripod.com/source1f.jpg
back at
http://deodiaus.tripod.com/source1b.jpg
Thanks
 
BTW, this image was scanned with a HP desk scanner
http://deodiaus.tripod.com/source1f.jpg
Is there anyway to set the scanner so as to set the focal length 1
Click to expand...
inch farther out?
I was thinking of removing the glass cover and hope the head don't
touch the board!
 
Hi!

That looks similar to a controller I've seen in a Comfortmaker
furnace. The controller in that application was known as "The General
90" and was also made in Mexico. Although it had fewer components on
it, the connectors were very similar and in about the same positions.

It's mentioned on that particular controller that no service is
possible, so don't expect any help from the manufacturer. They'll
probably try to sell you another one.

What I'd look at are any and all capacitors, to see if any have
failed. If the module is mounted on the furnace blower, it should have
very good cooling, so heat related failures are unlikely as long as
the blower is running. :) But if it's not in the path of some
airflow, or if it's near a burner, the capacitors are a likely
candidate for problems. They won't stand the heat, as the electrolyte
dries up and makes the capacitor fail. If you do not have a capacitor
checker, look for bulged tops or brown flaky residue on the capacitor
tops.

If that doesn't turn anything up, the glue that seems to be all over
that board should be investigated. Some of it may have turned
conductive over time. This will produce strange results.

Finally, examine the relays. See if you can pop them open without
undue violence. You may find burned contacts that don't do what they
are supposed to do reliably. Fixing this may be a little difficult--
usually some gentle abrasion of the contacts to clean the burnt
material away will work, but eventually you will need a new relay as
the damage will eventually return. If the manufacturer of the relays
is still making them, and they are not a custom part, you may be able
to get them.

William
 
Hi!

Is there anyway to set the scanner so as to set the focal
length 1 inch farther out?
Click to expand...
Probably not easily or at all. I believe you'd have to change the
scanner's optics considerably to pull this off. Do you have a digital
camera?

If you do, it should do an acceptable job of photographing the board
and its components. Any macro mode that is available can be used for
close ups.

William
 
In article
<e416cd99-93e7-43e6-b36a-d5c175c4b805@k17g2000yqh.googlegroups.com>,
Deodiaus <deodiaus@gmail.com> wrote:

I have an Source1 HVAC control which is failing. It works. turns on
the heat, but shuts off prematurely. Does anyone know if it is
possible to fix it, or is that too complicated to try fixing by
replacing the heat damaged resistors and diodes?
see front at
http://deodiaus.tripod.com/source1f.jpg
back at
http://deodiaus.tripod.com/source1b.jpg
Thanks
Click to expand...
If anything is failing on those boards, it's most likely one of those
relays. Hard to say for sure with pic out of focus like that, but sure
looks like there's a few areas of dismally bad original solder, too.
 
Does anyone know how to clean it out
see a pic
http://southjersey.craigslist.org/for/1498238163.html
 
Yes, looks pretty routine to me. A basic clean and check.

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


"Deodiaus" <deodiaus@gmail.com> wrote in message
news:9ad258e0-490f-47c0-a03b-ac86dfea881f@d10g2000yqh.googlegroups.com...
Does anyone know how to clean it out
see a pic
http://southjersey.craigslist.org/for/1498238163.html
 
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