There is a probe that is in the one of the flame... This once heated builds up enough pressure do to the heat to keep the shut/off valve open... (reason, if the flame went out the gas would continue to flow) this "thermocouple is replaceable !!
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If you are able to , open the burner box , the igniter has a thermocouple ( might look like a thick wire that would be in the flame if it were on). If it gets corroded or junked up it will not register the flames presence and will shut off the gas). Take an emory cloth and polish it. Hope it helps.
Hi, The thermocouple is bad and you will have to replace it... The thermocouple is the thing that sticks up in the flame to sense that the flame is on... if it goes bad the pilot flame will not stay lit when you release the button...
Most gas valves have a flame sensor, which is a metal bulb at the end of a wire. The pilot light heats this bulb, and the valve stays open because there's a flame. If the flame has been out, you'll need to hold down the pilot light button for as much as two minutes after lighting the flame to allow the flame to heat the flame sensor up enough to keep supplying gas when you release the button.
There is a valve which you are bypassing when you press the pilot button. It is usually a sealed hydralic valve which holds the gas on as long as a flame is on the bulb. This expands the fluid and keeps the gas valve open. If the bulb moved and is not in the flame, or near enough, it will not stay on. Also since it sat for a year the internal workings of the valve could have "gummed" up. You need to replace the valve. You did not mention the name or model of the unit. Do a search with your units brand name followed by heater followed by parts. This should return dealers who can supply the part you need. Let me know if you need anymore help.
You will need to find the gas valve. Open up the lower section of the fireplace and look foe a small cube of aluminum with a knob on it that says On-Off-Pilot. Turn the knob to the Off position by lining up the word with a small dot or line indicator on the body of the gas valve. Then turn the knob to the Pilot setting. You will know when you are in the correct setting because you will be able to depress the knob into the gas valve body. Hold the knob depressed and click the larger red button. It will snap so don't be startled. Continue to hold the knob in while looking between the logs for a blue flame. If you don't see one, keep snapping the red button. Once you see the flame, continue to hold the knob depressed for 30 seconds or so. Release the knob and make sure the flame stays on. If it does not, repeat nthis procedure and hold down the knob for 45 seconds. If the flame continues to go out, you need a new thermocouple. Once the flame stays lit, rotate the knob to the On setting. The main burner should start within 15 seconds.
sounds like your thermacouplar is going out and needs replaced. Sometimes these will act like they are working fine , but when the pilot stays on for awhile and later goes out it is a sure sign that it is bad
the heater makes use of a millivolt generator which generates a small dc voltage (500-750mv) that is applied to the pilot valve of your main gas valve. when you light your pilot, the flame bathes the generator with a flame. after a delay you release the pilot button. if the generator is working, the pilot valve will stay lit. if the generator is not working the flame will go out as soon as you release the pilot button. change the generator.
Hi , you can try and pull the panel on the bottom of fireplace out and check the adapter in fireplace. Sometimes they go bad. When you open in also check to see if there is an adapter plugged in and a option to use the battery operated function. If this goes bad the pilot will not stay lit.
Gas apliances have safety features built into them so you don't blow yourself up. The pilot heats a thermocoupler which tells the gas valve there is a flame, open the main gas to the burner. If you can see the flame area of the pilot look for a round post about 3/16 inch in diamiter. This should be directly in the flame, if not bend the bracket so it is in one side of the pilot flame. The thermocouple is attached to a mounting bracket. This will be held in place by a 1/4 inch hex screw. remove the screw and the capilary tube leading to the gas control valve. Before you do anything, close the main gas supply to the fireplace and disconnect the power to the fan. You may need to semi dismantle the fireplace to get the thermocouple. The gas valve end is a brass 1/4 pipe thread plug. Turn the outer nut and remove without twisting the tube. Reverse this order to install a new one. Besure not to twist the capilary tube, tighten brass nut 1/4 turn past hand tight. Your better heating supply house will have these in stock. Restarting the pilot will take a few tries because the gas was off. Your gas suplier would charge about $75 to fix this. if you don't have the proper tools and it dosen't look pretty stright forward don't do it. You could get dead.
Turn the knob on the gas valve to pilot, push in and hold. You can push the red button to light the flame, but I always use a flame lighter of some sort, just because its faster and the spar-ker may not be working. Anyway, push the button in, and hold it after the pilot flame is on for a minute or so then let up on the button. If it stays on turn the gas knob to on and that's it.