Question about Williams 2509612 Ceramic Mid-Size Heater

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Thermostat thermometer broke - mercury?

The thermometer on my Williams heater thermostat accidentally broke when the cover fell to the ground. Does anyone know if this thermometer contains mercury?

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  • fulquan Mar 13, 2008

    No, the thermostat is on the wall, separate from the heater. It's like this:
    http://67.114.233.34/CGI-BIN/LANSAWEB?WE...


  • taliiii Oct 06, 2008

    I lost the cover of the thermostate box, where can I buy new one???????????????

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  • 288 Answers

Is this one of those heaters that has the thermostat down on the bottom by the gas valve, and not mounted on the wall somewhere?

Posted on Mar 13, 2008

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Posted on Jan 02, 2017

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1 Answer

Williams wall heater, lite pilot and heater comes on okay, but will only come off when I disconnect the thermostat?


If you have to disconnect the thermostat wire at the gas valve then it is either a shorted thermostat or a short in the thermostat wire.

If you only have to disconnect the thermostat from the wire, then it sounds like a bad thermostat, replace the thermostat

Apr 11, 2013 | Williams 2509612 Ceramic Mid-Size Heater

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Williams 3003622 pilot light is on but heat doesn't turn on- there is a "Do It" thermostat connected. Is it a problem with the thermostat or furnace?


Try jumping out the thermostat (red and white wires) that run to the thermostat these tell the heater to come on. Jump them together if you have heat it is the thermostat, if no heat it is the furnace. Should it be the furnace I would first check the thermocouple or some manufacturers call it a flame generator. Clean this with steel wool and position it in the top center area of the flame as this is the hottest part of the flame. Good luck

Dec 26, 2010 | Williams 3003622 Ceramic Wall Mounted...

1 Answer

The red button keeps poping causing the hot water heater to shut off. I have to constantly reset it.


The red reset button or ECO or energy cut off turns off power to electric water heater.
The ECO responds to temperatures in excess of 150 degrees F.

Preliminary work:
You can use thermometer to check water temperature immediately after ECO trips.
Compare water temperature against the thermostat setting.

There are 4 things that can cause ECO to trip:
1) Bad thermostat is sticking and letting element continue heating water, or ECO is reading incorrect temperature.
2) Factory installed insulation and cover missing from tank, and thermostat is exposed to cooler air and misreads tank temperature.
3) Element shorted to ground in center of element. This completes 120V circuit to ground which will cause element to continuously heat the water.
4) Loose wire near ECO causing high-heat electrical event.

Solution:
Check for missing insulation.
Check screw terminals for signs of high heat and burning >> tighten screws.
Replace both thermostats using detailed instructions given on link below.
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

If the problem continues after replacing thermostats, more troubleshooting is needed:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

For more self-help information about your electric water heater:
http://waterheatertimer.org/Do-it-yourself-water-heater-timer.html

For more help, add a comment and I will respond

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1 Answer

One of the thermastat wires attaching to the williams heating on the wall became loose from the screw and didn't seem to be making little of no solid contact like a car battery might due. i tightened the...


If it touched a grounded metal surface, it is possible, leave the wires hooked up at the furnace, pull the thermostat off of the wall, disconnect the 2 thermostat wires, and then twist them together, the furnace should fire, if it does, then the thermostat is shot. Replace the thermostat, usually when there is a short, it burns out the heat anticipator on the thermostat.
Good Luck,
Paul Gibson

Apr 03, 2010 | Williams 1403622 Gas Compact Heater

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I have a Williams Ceramic Gas Wall Mounted Panel Heater, the pilot is on but the furnance is not working


Jump the two wires going to the thermostat, if it starts , you have either a bad thermostat or a broken thermostat wire. If it does not fire up, you will need to check for 24 volts AC going to the gas valve from the transformer. If you have voltage, you have a gas valve issue. If no voltage, check for a limit switch that may have overheated with an Ohm meter. If they all test good, replace the transformer.

Jan 22, 2010 | Williams 2509612 Ceramic Mid-Size Heater

1 Answer

The pilot goes on and stay on but heater doesn't the thermostat its ok


Take the two wires going to the thermostat and cross them. If the unit starts, you have a bad thermostat. If it doesn't, at the heater put a jump wire across the terminals where the thermostat wires are connected to. If the unit starts, one of the wires going to the thermostat are broke. If it still doesn't start you may have a bad transformer. Check for 24 volts AC across the two terminals on the gas valve. If yes, bad gas valve. If no, bad transformer.

Dec 16, 2009 | Williams 2509612 Ceramic Mid-Size Heater

2 Answers

I have model#2509622 Williams wall heater. I just installed it and the pilot lights fine. There is a copper ground wire, but the only way the furnace will fire up is when the ground wire is in contact with...


can you manually fire the unit w/o the thermostat by shorting 2 of the 3 wires, there may be more wires than that, but you should be able to fire it on 2 to 3 wires alone let me know it sounds like something is floating voltage wise on the unit

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1 Answer

Honeywell Thermostat RTH7400D


The thermostat will not cut off the A/C until the thermometer reading gets to 76.

If there is not a heat source near/behind the thermostat which is causing the thermometer to read higher than actual room temperature, it sounds like the thermostat thermometer is out of calibration.

There are ways to calibrate it, but much to involved to go into here.

One solution is to just set the thermostat at 80, knowing that it's really set on 76.

Another solution is to replace the thermostat.

Charlie

Aug 14, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

Nat gas wall heater wont come on during nite


Definatly sounds like a bad ground circuit IReplace thermostat you want it to be reliable

Dec 21, 2008 | Heating & Cooling

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