Help with furnace!

I cannot get main burner to light. Can the gas valve be plugged? Is it possible to clean it

Use the black knob.

And also I'm not seeing a knob to go to the pilot/on position. It just has like two buttons to push. Ones plain white that runs the ignitor and the other is black and says reset on it

I believe it's an nt22 c. And I will try with a torch as soon as I can because ik gas is getting to the furnance. That was the first thing I checked. Then I pulled it apart to see if something was blocking the gas from the main burner. Which I did find the slots on the burner rusted shut so I cleaned that and got that all cleaned up. I will report back once I check with a torch and let you know what I find. Thanks again!

When trying to light main flame..........you do have thermostat turned UP so it is calling for heat?


A Model number would really help

If running off of battery, it could be low. It will not start if the battery is not charged.

Or plug it in to electric. Mine is a 79 with the same furnace. It has to have enough juice.

conant47f wrote:
Can not get main burner lit

Do you have a 1lb. propane torch?

Heres my drill for standing pilot appliances: Turn off gas valve for the required 5 minutes. Turn knob on gas valve to "pilot" position. Ignite pilot flame with torch while directing torch flame onto thermocouple (it usually changes color) and turn gas valve to "on" position with thermostat set for high temperature. The main burner should ignite because the thermocouple has been heated. If main burner does not ignite, the orifice and burner tube may be dirty/clogged. If the main burner does ignite but the pilot does not remain lit, the thermocouple may be bad or pilot flame not adjusted/directed onto thermocouple, or pilot orifice or tube plugged/bent. If all the above remedies don't work, time for a new gas valve and inspection/adjustment of the main gas pipe and regulator.

Good luck with the furnace.

conant47f wrote:
Can not get main burner lit

Change gas valve if you are sure you are getting gas to furnace. You can check by loosening the fitting at the furnace and see if you hear or smell gas.

TRy ebay for the valve

Can not get main burner lit

I tried earlier with no success but maybe I didn't hold the lighter on the thermocouple long enough? I will try again tomorrow and see if I figure anything out and I will post back.