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Posted by Lawrence on November 28, 2006, 6:53 am
zometool@hotmail.com wrote:
> My home's air heater (installed in '96) runs on natural gas and is
> located in a crawl space underneath the house. The blower is working,
> but I'm only getting cold air from the heater vents in the floor. My
> gas stove operates just fine, so I assume my gas has not been shut off.
> My digital thermometer appears to be working, at least in part - it
> tells me the inside temp. is 46 degrees, but I can't tell it to make
> the temp 70 degrees. I'm a pretty new homeowner, so I haven't studied
> this system and related problems yet, but now I'm feeling motivated.
> I'm also feeling low on funds until next year, and I can't easily
> afford a technician right now. Any advice as to how to proceed?
> What's most likely to be wrong and how do I test to find out? Thank
> you for offering your best advice.
I am not an expert but have used gas appliances for years and these
are the things I would check. We are assuming you have gas but no
ignition. Most furnaces have some type of access panel or door .
Get your flashlight, go in the crawl space and see if you can find this
panel. Pull it off and check for a pilot light. Inside that access
panel or inside the door to the panel there will be detailed
instructions telling you how to re-light the pilot and possibly other
procedures. Read these instructions. This will be your cheapest and
easiest fix. Sometimes you can light the furnace with a match. This
is a sure sign that it is the pilot or ignitor.
If yours doesn't have a standing pilot then there will be some sort of
electronic ignitor which makes a spark. You should be able to replace
it.
It's also possible that your thermostat has failed somehow. Replacing
it is a cheap and easy job as well.
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