Yes, "one flash" code is ignition code. So what do I need to check? Looking through, I cant see anything lighting up. Should I see the igniter "light up"?

Thanks,
pdl2

Should I see the igniter light up before the blower assembly should kick in? or will the igniter not kick in until the blower assembly does first?

Thanks
pdl2

It would seize up that quickly after working the previous morning? what does the "one light flash" diagnostic indicate? where should I oil it and with what kind of oil?

Thanks
pdl2

I have a Coleman Furnace Model #DGAA708BDTA. Was working yesterday, then it stopped. ONE LIGHT FLASH on the diagnostic. Two years ago I replaced the booster assembly. Should I try to turn the fan again with a screw driver, or would you suspect something else since it has been working for about a mon...

So how difficult is it to replace the booster assembly?? I talked to a local guy and he tried to sell me one for $329.00 and said it was probably too difficult for me to try. When everything is hooked back up, will the pilot self light? or will I need to light it?? I have seen other people talk abou...

Have a Coleman furnace, model #DGAA708BDTA. The past 4 or 5 years, when we go to start the furnace for the first time, it acts like it wants to start but it wont. There is a black cover on what looks like a vent pipe with 2 orange hoses attached to the pressure switch ( ? ). I take off the cover, an...