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Pilot light comes on, but when I release the pilot button, the light goes out even though I have kept it in for a very long time. How long will be enough? 2 minutes or more?

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Bad thermocouple.
this is what one looks like...
Honeywell CQ100A1021 18 Inch Replacement Thermocouple for Gas Furnaces...

Posted on Apr 12, 2015

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Posted on Jan 02, 2017

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  • 1 Answer

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

SOURCE: Laars Lite 2 Pilot will not light

If you have not found the problem yeat, it IS the thermocoupling( or pilot generator(same thing))
You may test by placing a multimeter on the red and white leads coming to the gas valve. you do not need to disconnect the leads first but you can

Posted on Jul 25, 2008

SOURCE: Pilot lights but main burner won't

sometime if the heater has been sitting for days spiders get into the burner area or the area between the tank and the burner and make a web blocking the flow. I have taken a compressed air in a can like the ones you use for computers laptops and blow air up the shaft and around the burner wait 2 minutes then try again. Sometimes it takes 2 or 3 blowouts to work. Put the air compressor right in the little gas nozzle that comes out to light the pilot for the best results

Posted on Aug 21, 2008

arealplumber
  • 33 Answers

SOURCE: pilot lite will not stay lite

You need to change the thermocouple on the unit.

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First check to see if the flame is hitting the thermocouple when the flame is on when you hold down the button. If it is then remove the the thermocouple and replace with the same size. You should be able to pick one up at your local hardware store.

If when you replace the thermocouple the flame does not stay lit still you may have a bad gas valve.
Hope this helps and please rate this!

Posted on Dec 08, 2008

  • 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

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1 Answer

Pilot goes off as soon as I release the button


You need to hold the button down for about 3 mins. If it goes out after that long the thermocouple is probably bad. Look at how long the wire is from the pilot light to the gas valve. They come in different lengths.

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I have a Vulcan Gas wall furnace that is not working. We cannot work out how to light the pilot light. According to the documents we have it is a 26.4MJ model or the 40MJ model


The Quazar manual says....
-Thermostat control knob to 0
-Then press and hold down * (Star) button
-The press the "ignition" button one or more times until the pilot lights
CONTINUE to hold the * button for at least 15 seconds and release slowly making sure the pilot stays lighted.
-If the pilot goes out.. repeats steps above and hold the * button for much longer than 15 seconds and THEN release the * button slowly.

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Have a Reddy Heater RCP275 propane gas heater. If able to light - the heater will burn for 1-5 min. but then goes out. Sometimes burner will not light at all when the red pilot button is released. At times...


Sounds like the igniter needs to be replaced. It is normal for a heater to run five or so minutes that means the thermostat is working. then restart when the temp calls for heat but if the igniter does not work it will not light up again.

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1 Answer

Gas is on pilot won t light


Hello there: The problem you mention is not that clear. The pilot won't light or the pilot lighted but won't stay on is two different problems. If the pilot won't even light or no gas coming out off the pilot when you push down the pilot button it means the pilot orfice is blocked and what it need is cleaning the pilot orfice. If the pilot light is on but goes off when you release the button then the thermopile need to be changed. Hope this can help.

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1 Answer

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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Pilot will not stay lit after button release


most likely you have a thermopile that has low output. it takes about 100mv to maintain pilot light

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1 Answer

Pilot goes out once button is released


If the new thermocouple was installed properly, with its tip in or across the pilot flame so as to be heated by the flame, then the control valve may be faulty.

Note: The pilot primer button may need to be held down for a longer period of time.

Aduz

Mar 24, 2009 | Water Heaters

1 Answer

I need to know how to light the pilot on my somewhat old water heater. The model is called the challenger 5 the model number 153.331471


On these older gas water heaters there is a gas control with temperature selection and below that is a removable cover. Once you remove the cover you can gain access to the pilot. You must rotate the knob on the top of the control to the pilot position. When in the pilot position, hold the red button down and light the pilot. Continue to hold the button down after the pilot is lit for about one minute. If when you release the red button the pilot goes out, try one more time. If it goes out again after releasing the button your thermocouple is bad and must be replaced. The thermocouple generates a millivolt electrical current that hold the gas valve in the operating condition when the pilot is lit. When the pilot goes out there is no heat to generate this small electrical field.

Jun 08, 2008 | Kenmore Heating & Cooling

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