Question about Williams (5009622) Ceramic Gas Wall Mounted Panel Heater

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I have a Williams 3509622 and the pilot won't stay lit, as soon as I let go of the control button the pilot goes out. I replaced the thermocouple and the pilot still won't stay lit

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Posted on Jan 02, 2017

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  • 189 Answers

SOURCE: Pilot goes out afeter a few minutes

I bet you have a dirty pilot assmbley which caused the thermocouple to go bad. Remove the assembley clean it well (including the small oriface inside the assembley). then install a new thermocouple (probably 12-15 dollars) this should solve your problem.

Posted on Mar 28, 2009

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SOURCE: Pilot light won't stay lit when you try to turn

Once your pilot is lit the thermocouple sends millivolts to the gas valve to tell it that the pilot is lit and to allow the gas valve to open. Check to see if your thermocouple is in the pilot flame. I f it is then you will need to replace the thermocouple.

John

Posted on Oct 03, 2009

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SOURCE: intertherm gas fireplace, model BDM 35, pilot goes out

could be thermocuple or pilot blocked clean pilot then try make sure you are turning to on and not back to off i was doing this the other day some go clockwise some anticlockwise

Posted on Jan 02, 2010

  • 221 Answers

SOURCE: The pilot light will not stay lit, I was told

Hi, this heater doesn't have a thermocouple, it uses a pilot generator which is more reliable so I doubt you need to change it out. First thing to check is that you have a clean "sharp" blue pilot, you should be able to hear it quietly roar. If it is yellow and appears "soft", the pilot need to be cleaned. The easiest way is to use a straw or tubing of some sort to blow into the pilot, gently tapping the pilot assembly. That should clean it up and heat the pilot generator properly. Tighten the the screw terminals at the control valve to assure good electrical connections and last but not least turn off the thermostat until you get a standing pilot. Good luck and stay warm.

Posted on Jan 13, 2010

  • 2 Answers

SOURCE: Williams 3003622 Wall Mounted 30,000 BTU The pilot

I'm having the same exact problem... At first we thought was the vent... but the way the flames goes out... it seems that there is "not enough oxygen" more than "blown out by the wind"... right after both main & pilot goes out, I can't even light any external flame inside the chamber... and it doesn't feel like the outside cold air coming in... it just feel like there is some sort of gas in the chamber that's so strong, it prevents flame... and the only thing I can think of is that it doesn't have enough oxygen, but too much natural gas, and flame can't sustain.

Posted on Dec 16, 2010

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Pilot light won't stay lit


Replace the thermocouple.

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My Williams heater Model # 435FXR, is not staying lit after I light the pilot. I changed the thermocouple (even tho I sensed it might not be that), and it still didn't work. I disconnected it again and...


You may have changed the thermocouple, but did you clean the pilot assembly? Dust & dirt can get pulled in and restrict the gas/air mixture. The "blue flame" needs to impinge on the thermocouple in order for it to stay lit. Or, couId there be a possible "crack" in the heat exchanger ?

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Hi,
The thermocouple is bad and you will have to replace it...
The thermocouple is the thing that sticks up in the flame to sense that the flame is on... if it goes bad the pilot flame will not stay lit when you release the button...

heatman101

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How do i light pilot light?


Remove front cover,or just lower section if you can. they usually just need to be lifted up about an inch or so and pulled out. However some have covers that snap in place. After you remove cover locate gas valve. It should have a control knob on top with markings for on, off, and pilot. Set control to pilot. Follow lines from gas valve to burner compartment, one goes to main burner one ,small copper colored line is the thermocouple, other line is the pilot. Turn thermostat down as far as it will go. Make sure gas supply valve in line to heater is on and then depress pilot control , when you have pilot control depressed have a match or other small flame source close to pilot assembly. If it lights then hold down on pilot control for a couple of mins. Slowly release pilot control and if it stays lit turn gas control to on. Turn thermostat up to call for heat and burner should light. If pilot doesn't stay lit when you release pilot control then try again holding pilot down longer. If it still won't stay lit then thermocouple will need replace. Good luck. Thanks

Nov 22, 2010 | Williams 6508732 Gas Heater

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I can get the pilot to light but it goes out as soon as I release the control knob. I have turned the tank on and off, purged the lines, and relit the pilot with the ignitor many times, but it won't stay...


Your right on track, most likely it is the thermocouple that detects the flame. these produce a very small amount of voltage when heated and the gas valve needs that to tell it to stay on. Smetimes you can adjust the thernocouple to get closer to the flame and it might start reading again. These thermocouples are reletivly cheap to buy and fairly easy to install. If the thermocouple is replaced and still not working then the problem is in the gas valve.

Nov 16, 2010 | Williams 2509612 Ceramic Mid-Size Heater

1 Answer

The pilot light will not stay lit, I was told


Hi, this heater doesn't have a thermocouple, it uses a pilot generator which is more reliable so I doubt you need to change it out. First thing to check is that you have a clean "sharp" blue pilot, you should be able to hear it quietly roar. If it is yellow and appears "soft", the pilot need to be cleaned. The easiest way is to use a straw or tubing of some sort to blow into the pilot, gently tapping the pilot assembly. That should clean it up and heat the pilot generator properly. Tighten the the screw terminals at the control valve to assure good electrical connections and last but not least turn off the thermostat until you get a standing pilot. Good luck and stay warm.

Jan 13, 2010 | Williams 2509612 Ceramic Mid-Size Heater

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Pilot Light won't stay lit on wall furance


The low voltage wiring and the thermostat has noting to do with the pilot function of the wall furnace, check to see if when you have the pilot lit manually, while holding the button in does the flame impinge on the thermocouple and does the flame try to wrap around the thermocouple? if not the thermocouple and pilot flame need to be adjusted so that it impinges on the TC, if it does have a good flame impingment, then you probably have a bad TC from the factory, call them and have them send you a new one if still under warrenty.

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