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Williams 5001922 won't turn off

Thermostat will not turn off stove it was replaced along with thermopile

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Why i turn on the thermostat, the fire won't light up. why is that?


Assuming the pilot is working normally, when you turn the thermostat up past the current temperature of the oil, you should hear and feel a tiny click in the thermostat. If not, the thermostat is defective. If there is a click, a weak thermopile is occasionally to blame. Sometimes further heating the thermopile with a propane torch will cause the main burners to kick on. If replacing the thermopile does not solve the problem, you have a defective gas valve.

Aug 11, 2014 | Imperial Kitchen Appliances - Others

1 Answer

I have williams model 5009622 , my furnuce come on not stop , i think thermostat bad , i changed the new one but not kick on , i conect 2 wires then it kick on , you think that may be bad thermopile is...


Make sure to purchase a thermostat that will operate on a millivolt system the old Honeywell t-87 would work but the new T-87 replacement ones do not work. make sure the wires are not touching each other at the connection points. Hope this helps.

Jul 04, 2014 | Williams (5009622) Ceramic Gas Wall...

1 Answer

How do you wire the thermosat on williams wall furnace model 3509622


This heater has 2 type gas valves one valve has the thermostat built into it. No wiring needed for that puppy. Looks like this:


11_5_2011_12_12_10_am.jpg
So I am guessing that one ain't you.
Your heater must use a millivolt gas valve with the 2 wire wall thermostat. The pilot generator does 2 things. It holds the pilot on and it produces voltages that operate the solenoid and open and close the valve when the room thermostat makes contacts. So what goes wrong with these? The pilot generator will sometimes hold the pilot flame but whn the 2 wires are touched together or you tun on the wall thermostat the whole thang just dies. That my friend is a weak thermopile generator. The other thang that goes wrong is the solenoid on the gas valve is open and therefore the gas won't come on. Their is also a fuse mounted on there that melts and kills the magnet that the generator holds in for the pilot.

Nov 04, 2011 | Williams 2509612 Ceramic Mid-Size Heater

1 Answer

PIlot light on will on kick on from thermostat or manual switch on stove.


I think what you're saying is The Pilot Light is on, but the stove will not come on using the Thermostat or the Manual Switch on the stove.

If that is the case, first check the Control Knob of the stove's Control Valve. Is it in the ON position or the Pilot position. If it's in the Pilot position, turn it to ON. If that's not the case, check the wiring from the the thermostat where it connects to the Control Valve terminals to make sure it isn't loose. One wire should go top the TP terminal and the other to the TPH terminal. Also, check the position of the Manual ON/OFF Switch, it should be in the Remote or Neutral (middle) Middle Position. If some cases, it has to be in the OFF position for the Thermostat to work.

If all of the above checks out OK, check the pilot flame to make sure the flame is touching the Thermopile. If the flame is curling up and away from the Thermopile, the pilot needs cleaning.
And last but, not least, if all else fails to solve the problem, the Thermopile needs to be replaced. As, it's not generating enough millivolts of electricity to open the control valve and allow gas to the burner(s).

Hope this helps you troubleshoot the problem and make any necessary repairs.
Please be kind enough to rate my response to you. Thanks!

Mar 25, 2011 | Heating & Cooling

1 Answer

Pilot is lit ,but when i turn the thremostat on nothing.


Has the control knob been turned from the PILOT position to the ON position?
If that has been done, check the wiring from the thermostat to the Gas Control Valve in the heater. Make sure the wires are connected in both places (T-Stat & Control Valve). If all of that appears to be correct, there's a good chance that the Thermopile (I think Williams calls it a Pilot Generator) has failed. This part generates millivolts of electricity to open and close the gas valve when the Thermostat calls for heat. But, don't confuse the Thermopile with the Thermocouple. Your unit has both. And since the pilot is burning, that tells me it's not a problem with the Thermocouple.

Anyway, the only way to test the thermopile is with a millivolt multimeter. You will have to consult your Owners Manual for the proper millivolt output for your heater.

Hope this helps head you in right direction in solving this problem.

Mar 02, 2011 | Williams (5009622) Ceramic Gas Wall...

1 Answer

I have a williams thermostart . It was off yesterday . today when i tried to start its not getting started . Can you please let me know how i can start it manually using ignition . its pretty cold today


Couple of quick questions: Is the pilot lit and the Control Knob turned to the ON position?
If not, turn it to the ON position.

Has the thermostat been set higher than the ambient room temperature?
If not, set the temperature at least 10 degrees higher than the ambient room temp and see it the burner lights?

Have you checked the outside vent, to make sure it's unobstructed?

If all above the above fails to provide a yes answer, then I suspect that the Thermopile has gone bad. The Thermopile generates milli-volts of electricity that opens the gas valve when your thermostat calls for heat. The heat from the pilot flame against the Thermoplie is what generates the milli-volts of electricity.

They are not difficult to replace and only requires a screw driver and an appropriately sized open end wrench to accomplish the task. You can probably order the part directly from Williams. Also, if you have misplaced your Owners Manual, ask them for one of those too. It will be of help to you now and in the future.

Hope this helps solve your problem.

Mar 01, 2011 | Williams 1403622 Gas Compact Heater

1 Answer

Wall heater will not turn on


PILOT MY BE BLOWING OUT. IF YOUR WALL HEATER IS NEAR FRONT DOOR IT MY BLOW OUT. ALSO IF YOU HAVE A WEAK THERMOPLE IN PILOT IT WIIL SHUT OFF PILOT. WE USE MILIVOLT VOLTAGE METER TO CHECK WHAT THERMOPILE VOLTAGE IS. IT SHOULD READ 250 MILIVOLTS .CHECK THE LIMIT SWITCH MOUNTED IN TOP FLUE INLET IT SHOULD BE CLOSED AT THE 2 SPADE TERMINALS. CHECK ALL SCREW TERMINALS THAT THEY ARE TIGHT. HOME DEPOT MIGHT HAVE THERMOPILE FOR WALL HEATER

Apr 19, 2010 | Williams (5009622) Ceramic Gas Wall...

1 Answer

? Replacement part for an obsolete Williams gas valve P100172A


Hi try national energy they should be able to tell you the right valve for this , the thermopile should read between 500 and 300 mille volts

Feb 10, 2010 | Heating & Cooling

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