20 Most Recent Williams 2509612 Ceramic Mid-Size Heater - Page 8 Questions & Answers

try cleaning the crossovers between the burners. Also look closely at the flame and make sure that the burner is firing all the way to the pilot. Sometimes its just a few little holes that vent a little gas to give the flame a path to follow will be stopped up and cause the condition you describe

my heater will not turn on. William P322652 1 yrs old ? Iturn the heater switch on and the pilot ligth will not go on ?

Looks like the knob or the contacts are faulty.

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?

I called Nexgrill technical support at 1-800-913-8999. They are sending me a new thermo couple to keep the valve open when ignited - so the patio heater will stay on. I needed to give them the serial number (inside the propane tank door) and fax them a copy of the receipt.

Hope this helps.

There are 2 things to check. First is the thermostat. Next is the thermal safety switch located up on the heat exchanger. by-pass these one at a time by connecting the wires together. If that solves the problem, change to a new one. If neither one of these items are bad, you need a new gas valve.

I don't have a picture, but I can help you if you have a gas valve that has 3 wire connection posts labeled TH, TP and one will have both TH and TP. If so let me know.

Its in the bottom of the heater behind the vent cover . I don't know where you are but your local gas utility will come out and lite this for free.

bad 2 speed relay

Yes it sounds like it does. There should be no carbon monoxide in the environment. I am sure you know how dangerous CO is? Can your gas utility company or a registered gas technician to check it. The heat exchanger should be a replaceable part.

That probably means too much fuel or not enough air for correct combustion to take place. I would check its settings.

The switch you are talking about is called a roll-out or klixon high temperature limit switch. The over heating can due to a clogged flue vent, over firing from gas pressure being to high, etc. More information is needed like the model number, age, etc.

Hi, the next best thing to do would be to submit a quote to an hvac company and put a test valve that you've found within the quote. The company might then update you with the true replacement valve model if your valve is incorrect. Or you can reach out to a sell of your heating product on ebay and ask them if they can sell you that valve or any compatible replacement. Thank you.

Please, never bypass safety features. They are made to cycle and will still cycle if you bypass until it locks out on overheat.

As long as it functions to ur needs. Search utube or pinterest for maintenance videos. Ur library sec600 has repair manuals

have you had gas pressure checked?

When the main burner turns off, does it make a whoosh or pop? If so, this would be the issue causing the pilot to be disturbed. And have you tried to adjust the pilot/thermopile strength, if possible? A stronger pilot may help. Now if the main burner slowly goes out, and the pilot also slowly goes out, and also slow to ignite, and you've replaced about everything else, it may be the gas valve itself that has/is giving up. Gas is impure and causes a sticky residue. And if the main burner is "slow to act", this tells me the piston that's inside the valve is slowly opening or closing, and may be the reason the pilot is acting up. Make sure you check the outlet to your flue pipe also for obstructions. If the unit doesn't vent properly it can have more heat in the flue. That heat can have a downward rush when the burner goes out, kinda like forcing air through a clogged tube. And when you quit forcing the air, some of it comes back at you. Before condemning the valve try to check all else as you have done with the thermopile and such. Please work safe and I hope this helps.

See if it visually the same as what you have. All parts for yours are obsolete.

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I take it you are looking to buy a new valve ? if so just take picture of it and take it with you .

https://www.ecomfort.com/Williams-3509822/p67976.html https://www.bakerdist.com/williams-furnace-3509622-monterey-gravity-top-vent-furnace--78f946c These are the spec sheets it mostly in the height width depth and 9622 can be double sided do 2 rooms