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Pilot will only stay lit if I hold the button in. It worked prior to that and all I did was put the insert back into the mantel and tried to relite it and it wont stay lit. I checked everything outside the tank is full there are no leaks at any of the fittings and all the valves are on. I was told that the thermal coupler has to be a sixteenth away from the pilot and I checked that and still no response. Thanks Dave

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Make sure the flame hits the thermocouple and the connection at the gas valve is tight.

Posted on Jul 17, 2008

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Replace the thermocouple.

Posted on Jul 17, 2008

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1 Answer

I have ventless natural gas heater , u can lit the pilot , but when u let up off the button the pilot goes out . have replaced thermocouple the same problem pilot will not stay lit. have also used air...


When you light the pilot, hold the button in about 1 minute to satisfy the thermocouple. Once the thermocouple is hot and satisfied, turn the gas to "ON". You may have to extend the time a bit, but 1 minute is usually enough.

Best regards, --W/D--

Jan 20, 2011 | Heating & Cooling

1 Answer

The lit was out, without a manual on hand, how do I re-lit it/ Thanks.


If you're talking about a heater, you have to push, usually a red button, in, and then light the pilot gas light. Keep the red button pushed in for about a minute, until the thermocouple gets hot and turns on the gas valve, then release the rebutton, and it should stay lit. If you're having problems, you maybe have to try it two or three times, and, as soon as you can, replace the thermocouple (the long rod that gets heated by the pilot flame).
If you have a different system, such as an electric igniter, you'll have to push a button to engage it, and it should ignite. If it doesn't, it could be defective, or your valve could be going bad.
Hopefully, you will get it relit. They do blow out with random drafts, occasionally.

Dec 23, 2010 | Heating & Cooling

1 Answer

Im calling for heat from the thermastat and control panel, the boiler light and and the fan is running, but no matter how many times i keep re trying the pilot and burner will not commence, is there...


I would check to make sure control on gas valve is in on position and pilot is lit if you have a standing pilot. If you have a spark or hot surface ignitor make sure they are trying to lit pilot. If you have standing pilot model and pilot lit is not on. Turn control on gas valve to off,wait five mins. then turn to pilot. Depress botton and try to light pilot. If it lights hold down for a couple of mins. then release.. If pilot stays lit turn control to on. If thermostat is calling for heat this should bring main burner on. If pilot does not stay lit then replace thermocouple. Hope this helps. Thanks

Nov 16, 2010 | Heating & Cooling

1 Answer

We have an older (22 years?) 'Insta-Flame (model HE30 TN) natural gas fireplace insert. The pilot light is out, as we painted to inside of the firebox. The instructions show to 1) turn the dial to 'off'',...


On some gas valves the pilot setting is on the same dial as pilot on and on .on others the pilot light has aseperate button on right side of control dial. If yours has this there will be a cut out on cotrol dial that must be aligned with button to allow it to be depressed to light pilot. If yours has this align control dial cutout with pilot button,depress button and light pilot,hold for about one min. and slowly release,if pilot light stays lit,turn down thermostat and rotate control dial normally to right . There should be arrows or marks on dial and gas valve to line up. If pilot light stays lit turn dial to next position and check to see that pilot is still lit. This should be on position, turn up thermostat and burner should light. If your dial has pilot light setting on it then rotate dial to each position,try to depress dial and when you have right one dial will depress allowing you to light pilot. Follow same procedure as above and you should be in business. Hope this helps.Thank you

Nov 11, 2010 | Heating & Cooling

1 Answer

My Majestic DVR36RN gas-log fireplace insert will not start. No ignition when striker is depressed, no flame lit at all. Gas inlet line open, pilot switch to "pilot" as directed. Maybe...


Majestic DVR36RN: Here's what you need to do: Verify gas line is open. (You said you already have done that). Next turn the switch to pilot (you said you did that too). Make sure wall switch is on also. Now press and hold the pilot switch and hit the ignitor. Once it lights you need to continue to hold the pilot switch for roughly 1 minute. Release the knob and the flame should stay lighted. Now, turn the knob to on. You should be all set now.

Nov 09, 2010 | Heating & Cooling

1 Answer

Try to ignite pilot on 15/30b. flame ignites but goes out immediately when i realease the green button after 20 seconds. have replaced thermocouple but still no joy - any ideas ?


First, I'm assuming you have a residential Gas-Fired Heater or Water Heater that you are having problems with. My answer is based on this assumption.

Most thermocouples require that you hold the button for at least 45 seconds. Try holding the button for 60 seconds prior to releasing it. If this does not work, you can test your new thermocouple if you have a multimeter...preferably one with an alligator clip for your leads. To test your thermocouple, disconnect the end that screws into your gas valve. Set your multimeter to read Milivolts. Put your red lead on the copper line of the thermocouple.....it's easier if you have an alligator clip. With your pilot lit, hold down the button for 45 seconds and continue to hold while you put the black lead of your tester on the very end of the thermocouple (the part that attaches to the gas valve). You should read a minimum of 12 milivolts. If you do not read 12 milivolts, your new thermocouple is bad. If you are reading 12 milivolts, screw it back into the gas valve, relight, hold the button for minimum 45 seconds. Release the button. If the pilot goes out immediately, the problem (>99% probability) is with your gas valve.

Mar 06, 2010 | Heating & Cooling

1 Answer

Can't find instructions on lennox gf 8 series furnace


Does it have a standing pilot light? On new units, there is an igniter and not a pilot. But if you have a standing pilot, you will move the gas valve to "pilot" and push down the red button while holding a flame under the pilot located by one of the jets. Once it lights continue to hold the button down for a minute or so and then release the button. The pilot should stay lit. Then turn the dial to the on position. That's it.......... If the pilot won't stay lit then the thermocouple is bad and needs to be replaced.

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1 Answer

ES 160000 Endless Summer Patio heater won't stay lit


Bad thermocouple that senses the heat from the pilot light. This would be evident if you lite the pilot while holding the button down for about 30 seconds. If the pilot goes out as you release the button on the gas valve replace the thermocouple.

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2 Answers

Pilot light will not stay lit


is it full of dust my hot water used to do the same till i blew the dust and fluff out

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