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Posted by Oscar_Lives on April 12, 2006, 7:26 am
> Hello! I recently moved and find that the carpet in my new house,
> though clean otherwise, has a black sooty stain all around the
> baseboard. I called some carpet cleaners to come by and take a look and
> they told me it was from the gas furnace, but couldn't be any more
> specific. Does anyone know what causes this problem and what I can do
> to prevent it from getting worse. I probably don't need to point out
> that I know nothing about these systems (moved to the midwest from CA
> where we didn't need forced air). Any help would be greatly
> appreciated. Thanks!
>
Sounds like you have an underpowered analog thermostat on your furnace. The
problem is that the analog thermostats do not properly interface with the AS
(anti-sooting) circuitry in the furnaces ECC emmision control center.
Replace the old thermostat with a proper digital thermostat (it is easy--you
can do it yourself). Make sure the digital thermostat has ASC capability
(most all of the higher-end digital thermostats have this built in.)
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