||10-21-2011 07:43 PM
Lennox G40UH-48B furnace burners failed to light
LED trouble code is "burners failed to light" but they do light and burn for 30 seconds then a click and they shut off. Cycle repeats 4 times and then lock out. I replaced the return air filters and flame sensor with no change. Both fans run fine.
||10-21-2011 09:05 PM
Could be a poor ground.
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