[mviker]

I'm having some trouble with my normally great Carrier Weathermaster 3000 furnace.

Every year, once it warms up enough, I shut off the gas supply to my furnace using the valve in the closet connected to it and install a small jumper between the green and red wires so the fan is on all summer. I have no central air, so this helps keep the air moving and provides the illusion of cool on those hot summer days. Once fall approaches (Right about this time), I reverse the procedure and fire up the furnace for the winter.

Well, Last night, I took out the small jumper and turned my gas back on and turned the thermostat up to where the furnace should kick in and start. I got nothing. After double-checking, I tried again and this time, the fan came on and ran for about 5 minutes, but the furnace made no effort to ignite and start heating. I turned the thermostat back down so the fan should have shut off, but it kept running, so I shut the power to the furnace off and checked everything again. Looks ok, so I turn power back on and try again, but this time, no fan either. I noticed a 3 amp spade fuse on the circuit panel inside and tried pulling it out, but thanks to my clumsiness, lost as it flew out of my hands off into the ether, so at this stage, I'm dead in the water until I get a replacement fuse.

So today, I hit an Auto parts store and bought some 3 amp fuses. They look the same to me as the ones in the furnace, so I think I should be good to go for it again tonight after I get home from work.

Just a few questions...Do any of you know what might be the cause of the trouble? I do have a buddy that said it sounded like maybe the ignition part of the gas wasn't working or sensing gas. Is there a reset for this thing? I'm planning on putting in the new fuse, then cleaning the innards thoroughly, then trying again, but it's be nice to have a few suggestions as to what may be the culprit here. I've been doing this for at least the past six years and have never run into this trouble before. The furnace in my opinion, seems to be fine and isn't too terribly old, maybe 10 years? I don't recall when I had it installed.

Any suggestions as to what to check or look into would be greatly appreciated.

Thanks,

Kevin