Furnace is not turning on

Hi all, I have a Lennox 90UGF Series Unit and it is not starting up. I raise the thermostat temp a couple of degrees, and I can hear "something" turning on (sounds like either the fan or it's simply getting power) but I don't hear that "whosh" sound, even after it's been turned on for a while. Now, I did neglect the air filter for a few months (totally forgot about it) and when I replaced it yesterday, the old one was pretty dark with dust.
Hope someone can help.
Rob
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Turn thermostat up until it is above the room temp. Go to the furnace and remove the doors. Look for a circuit board. Find door switch and press and hold it. System will now attempt to light. Look on the circuit board for a flashing red light. Look on door panels for corresponding flash codes. Which code is it flashing?
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Since you changed the filters, the first thing I would check is to make sure that the door panels are correctly in place. If they are not seated correctly, the door switch may be open. If it has a regular pilot light, I'd make sure that is lit too.
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Al, both LED's are flashing FAST, which, according to the label means that it's under normal operation.
When I first turned it on this morning, the right LED (#2) was flashing slowly but somehow the furnace was started and it was pumping heat for like 2 minutes. Then the burner (I assume it's the burner) turned off again.
Thanks for your help BTW, Rob
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Al, both LED's are flashing FAST, which, according to the label means that it's under normal operation.
When I first turned it on this morning, the right LED (#2) was flashing slowly but somehow the furnace was started and it was pumping heat for like 2 minutes. Then the burner (I assume it's the burner) turned off again.
Thanks for your help BTW, Rob
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Al, both LED's are flashing FAST, which, according to the label means that it's under normal operation.
When I first turned it on this morning, the right LED (#2) was flashing slowly but somehow the furnace was started and it was pumping heat for like 2 minutes. Then the burner (I assume it's the burner) turned off again.
Thanks for your help BTW, Rob
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Sorry about the triple post, my browser was frozen and I kept pressing send.
Rob
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Without being there there is no way I can troubleshoot it for you. your best bet is to call a local company to check it out and give it a good going over for safety sake. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ spam protection measure, Please remove the 33 to send e-mail
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