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Furnace 435fxr pilot wont stay lit. As soon as I release the button pilot goes out doesn't matter how long I push the button.

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  • Heating & Co... Master
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Clean pilot and change thermocouple .

Posted on Dec 05, 2016

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Posted on Jan 02, 2017

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SOURCE: Unable To Keep Pilot Light Lit!

I have a Williams top vent gravity wall furnace (model 5009622) and I had the same problem. I had to take the cover off the furnace -- screw on top and two at the bottom (open the access door and there is one screw on each side) to get to the reset button for the vent safety shutoff system. On my furnace it's on the left side toward the top of the unit. I pressed the little red reset button and it's been working ever since. If your furnace is properly installed and doesn't have bird's nest in the chimney, it should work fine. Good luck!

Posted on Dec 06, 2007

  • 108 Answers

SOURCE: pilot light wont stay lit

You need to replace the pilot safety switch which is usually a Thermocouple. It is connected by a thin tube from the gas valve to a bulb near the pilot burner. It should be available at Home Depot or online.

Ray

Posted on Dec 17, 2008

johnsonr1
  • 91 Answers

SOURCE: The pilot light will not stay lit to light the heater.

The power pile (pilot generator) is defective. It produces a milivolt signal to ensure to keep the gas valve open. If it goes bad, the valve thinks the pilot is out, even when you are holding the button down, so when you release the button, it shuts the gas off to prevent excess gas buildup and a possible explosion.

Posted on Sep 12, 2009

james3751
  • 614 Answers

SOURCE: pilot wont stay lit on my furnace

Bad thermocouple. you can get these at a hardware store. easy to replace rus

Posted on Oct 04, 2009

  • 8404 Answers

SOURCE: i have a older Miller furnace(1989)the pilot will stay lit

Replace the thermocouple.

Try this, do you have a butaine stick lighter? Try to heat the thermocouple with it ... see if you can get the main burner to come on. If not - definitely, replace the thermocouple.

Thanks for your question.

Posted on Jan 04, 2010

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1 Answer

Pilot wont stay lit on my furnace


Bad thermocouple. you can get these at a hardware store. easy to replace rus

Oct 04, 2009 | Heating & Cooling

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The pilot light will not stay lit to light the heater.


The power pile (pilot generator) is defective. It produces a milivolt signal to ensure to keep the gas valve open. If it goes bad, the valve thinks the pilot is out, even when you are holding the button down, so when you release the button, it shuts the gas off to prevent excess gas buildup and a possible explosion.

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Unable To Keep Pilot Light Lit!


I have a Williams top vent gravity wall furnace (model 5009622) and I had the same problem. I had to take the cover off the furnace -- screw on top and two at the bottom (open the access door and there is one screw on each side) to get to the reset button for the vent safety shutoff system. On my furnace it's on the left side toward the top of the unit. I pressed the little red reset button and it's been working ever since. If your furnace is properly installed and doesn't have bird's nest in the chimney, it should work fine. Good luck!

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