Question about Williams 1403622 Gas Compact Heater

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Pilot will not light

I installed a willieams 1403622 gas heater last year, and it operated fine. At the end of the winter season, the pilot valve and supply line valve were shut off. This year, when I turned on the supply line valve and pilot valve, then went through the pilot lighting sequence(several times for several minutes to let gas flow) the pilot would still not light. Any suggestions?

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It's probably the thermocoupler. It went out several times on my Williams though it has been working for quite some time now. Anyway, the thermocoupler is the copper tube coming out next to the pilot knob. It goes into the furnace area and has a tip that hangs near the pilot light, measuring temperature and suchforth. Anyway, they go bad and the pilot won't stay lit. Make sure you get the right length (bring it in with you -- normally it's 18" but could be longer).

You may have already fixed this, but I hop this may be helpful.

Posted on Dec 16, 2008

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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.

Posted on Nov 07, 2008

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We just purchased a Williams 1403622 natural gas heater and installed it yesterday. However, the pilot light WILL NOT light. Can you help?

If you mean that the pilot light does not stay lit, you could have a bad thermocouple or a loose connection at the gas valve. Make sure the flame is against the thermocouple. If you mean that the pilot won't light at all, bleed out the gas line a bit more.

Mar 07, 2011 | Williams 1403622 Gas Compact Heater

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How to turn on pilot light
Here is the installation manual that includes a section on how to light the pilot on your specified Furnace "Williams 1403622".
Let us know if this was helpful to you. Good Luck in your endeavor. :-)

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I dont know how to light the piolet

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1 Answer

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