Question about Williams 3003622 Ceramic Wall Mounted Panel Heater

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We have a Model # 3003622 Williams Gas heater. The pilot light went out during a snow storm and won't stay lit. Though we have 20 mph winds, we normally have high winds which hasn't affected this in the past. There is significant ice build up on the outside vent as well. Could the ice be hindering the pilot from staying lit? thanks Molly

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Yes clear the ice and clean the pilot assembly sounds like the flame is being retarded by a dirty pilot orifice

Posted on Dec 15, 2009

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Hello i have a williams wall Furnace model#25-35-50. I need to know if its a base board heat and also if you could tell me which wires are which. 1 red and 1 white


What you have is a Direct Vent, Gas WALL Heater. It is normally mounted about 6" off the floor on an exterior wall (since it has to be direct vented out). Not sure what the red and white wires are for, but suspect it's for the optional thermostatically controlled blower connection.

In any event, to help you install this heater properly, I have included a link to the Owner/Installation Manual, which should provide all the information you need to complete the installation correctly.

http://shopfnc.com/pdffiles/williams2man.pdf


You can download and print the manual for future reference.

Feb 26, 2011 | Williams 3003622 Ceramic Wall Mounted...

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Pilot not lighting.. If I take off the coupling theres GAS... gas does not seem to go to the Buner tube.. Which would be the pilot..


If you're not getting gas to the pilot, it may be that the pilot tube or the pilot is clogged. Or when you turn the Control Knob to the Pilot position and push it in, it's really not in the pilot position.In which case, if the knob doesn't bottom out and you don't feel strong pressure pushing back at you (more than just spring pressure), it's not really in the pilot position. Turn the knob a hair one and then the other until you find it. Then try lighting the pilot as you should, If it lights, hold the Control Knob in for at least one minute, ease off and if the pilot stays lit, turn it to the ON position.

If all of the above fails, you may need to replace the Control Valve. It's fairly rare that they go bad, but it can happen.

Hope this helped to solve your problem.

Feb 19, 2011 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

Williams 3003622 Wall Mounted 30,000 BTU The pilot light goes out when the main flame shuts down. The pilot light will stay lit for days when heat is not called for but when heat is called for the furnace...


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.

Nov 02, 2010 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

We have a Williams wall heater that was gas/ converted to propane that is newly installed. The thermostat does not work. Any suggestions?


Assuming the pilot is lit, try jumping out the thermostat wires where they come into the valve. A paper clip would work. If it works, the problem is in the t-stat circuit.

Dec 30, 2009 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

Heater will not stay lit!!!


Lets start with safety. Check your vent pipe for obstructions, mainly outside at the vent cap. The safety of this unit will not allow it to operate if there is anything blocking the vent. If all is OK, then next we will light and observe the pilot with it on the pilot setting on gas valve. The pilot flame should consume the tip of the generator point by 1/2 to 5/8". If it does not, then screw off the pilot adjust screw cover on the gas valve. This is clearly marked on the top of the valve. Inside you will have a much smaller screw. Turn it counter clockwise to raise the pilot level, clockwise to decrease. Never consume more than 5/8" of the generator tip. Hopefully your problem will be resolved here at this step. If however it is OK, then take a millivolt meter and read the generator millivolts, at the gas valve with the thermostat contacts closed. It should read 140 millivolts. You need this much power to properly operate the heater. If it is lower than 140, then replace the pilot generator....Rob Just a note...Do not remove or take apart any part of the Gas valve, other than the pilot adjust screw cover...Good Luck.

Dec 29, 2009 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

Williams debonair wall heater + pilot light problems


THE flame from the pilot should shoot past the thermo-couple and heat this up and make a small amount of mili- amps to prove the pilot light is lit. ..So if the flame doesn,t go past the thermo-couple it won, make mili-amps or its tme to change out the thermo-couple, They only cost lest than $8:00 and you can change it!

Dec 22, 2009 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

Re Williams 3003622 Heater Please advise how to ignite pilot light.


You will first need to turn the control knob to pilot. Then depress the control knob button and hold it. Then press the push button piezo igniter several times until pilot lights or open pilot inspection cover and manually light pilot with match/lighter. You may need to hold the control knob for at least a minute. Then release the control knob and if the pilot stays lit then turn the control knob to on. If it does not light then repeat the process again.

Oct 27, 2009 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

Need to turn on pilot light of Williams 3003622 serial # 400518D


Find the gas valve and turn it to pilot. (Or light) Use a long reach lighter. Light the lighter and press the knob in. Light the pilot and continue to hold the knob in for about 15 seconds. When you release it, the pilot should stay lit. If it doesn't, you need a new thermocouple. That's the small tube that the flame touches when the pilot's lit. They're inexpensive and usually not too hard to replace.

Jan 30, 2009 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

Williams 3003622 Wall Mounted Panel Heater Draft Blows Pilot Out.


yes. open cover, set to pilot and push in then light with a long nosed butane lighter like the ones used for lighting stoves. Hold pilot in for a few minutes, then close pilot cover and turn pilot knob to on position. that should take care of it unless you need a new coupler. good luck as the couplers go out on these heaters prematurely.

Dec 25, 2008 | Williams 3003622 Ceramic Wall Mounted...

2 Answers

Pilot will not light


The Pilot indicator will appear to line up with the arrow on the base, and even push in as though allowing gas to flow, but if it is just 1mm out of alignment, no gas will flow. So the solution is to move the valve in the Pilot mode slightly in one direction or the other to see if/when gas flows.

Nov 06, 2008 | Williams 1403622 Gas Compact Heater

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