Furnace won't ignite

Old 09-30-19, 05:54 PM
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Furnace won't ignite

I have a FG6RA 072C-16B this is the first time to be used this year. I have replaced the main limit switch and i have no code, red light is steady. The igniter is comes on a bright orange but no flame.
Old 09-30-19, 06:56 PM
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Is there voltage getting to the gas valve? Is there gas on to the house? Do other gas appliances work?
Why was the limit replaced?
Old 09-30-19, 08:05 PM
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Welcome to the forums.

In addition to roughnecks questions..... the link should be the manual for your furnace and will aid in the repair. A common problem is the large multipin connector on the control board gets corrosion on the pins. You can remove it several times to see if that helps. The same thing with the gas valve.

Service manual (pdf)
Thanks to the gray cooling man for this excellent manual.

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