I have a mid efficient Tempstar Furnace. It's not firing up and there's an error code...the green led light is flashing three times per interval. I thought I'd check here before calling a furnace company. Maybe it's something I can repair myself. Any help would be appreciated. Thank you.
I assume there is an electric ignitor and no pilot. Does the ignitor start trying to light the pilot and then keep quitting? If that's the case, pull the flame rod (that little 3" x 1/8" or so rod that would normally be in the flame. Easy access from the front and usually one screw. Give it a good wipe with a dollar bill (any denomination obviously) and replace. If that ain't it, then don't know without knowing what the error code means.
I had this happen on my Armstrong furnace, the 3 flashes can mean pressure switch open, I had it checked and it turned out to be a short in the gas valve
Yes, 3 flashes means air pressure switch issue. I will try to locate this switch and have a look at it.
if that what you code indicates, it might simply be the sir pressure switch doing exactly what its supposed to do when your venter motor is not making sufficient pressure. More often than not this means a new venter motor assembly, though on some occasions it is the air pressure switch.
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Furnace repair question
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