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diamondbackk60 12-16-2010 12:45 PM

Lennox G26Q4/5-125-6 help
I am a service manager at an apartment complex and the furnace that is having the problem turns the induced draft fan on for about 1 second and then turns off and wont turn on until I reset it. I replaced the draft fan but that turned out to not be the problem. the board flashes the green lights after the fan turns off..

If anyone can help it would be greatly appreciated.

Grampa Bud 12-16-2010 01:00 PM

The flashing lights are an error code that applies to your brand and model of furnace. You must find the error code chart, either in your papers or on line and determine what the little guy is upset about. While you are at it call a local Lennox dealer and get them out. If you just can't wait, check the furnace flue. If the induction fan runs on call for heat for a few seconds and quits I would suspect that there is some form of flue blockage. Might be near the furnace or an animal could be caught in the chimney. The last time I ran across this I found a 2" galvanized flue pipe at the furnace connection choked down to about 3/4" with dirt and rust inside the flue.

yuri 12-16-2010 02:09 PM

Read the error code chart and report back. Sounds like the ventor fan relay is failing on the board and need a new circuit board. Try

diamondbackk60 12-16-2010 02:32 PM

checked the vent but nothing is clogged. I have looked everywhere for the error codes but cant find them. Anyone have suggestions where I could find these error codes?

^^^ Disregard above I got it figured out, thanks everyone for your help!

yuri 12-16-2010 02:48 PM

They are usually on a sticker on the inside or outside of one of the furnace doors.

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