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My husband ran a gas line extention up stairs to the master bedroom and hooked up small gas wall heater. The pilot lights, but wont stay lite. It has been about 20 mins or so now. What could be causing the pilot to keep going out other than air in the line?

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  • David Johnson
    David Johnson May 11, 2010

    it takes a long time to purge the lines of air.

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Make sure that you are holding down the button long enough to heat up the thermocouple before you let go . The thermocouple needs to be hot enough to signal the presence of flame or the gas valve will stop sending gas to the pilot. If you are letting it get hot, but still have the same problem, the unit may have a bad thermocouple. This is the thin copper tube that goes from the gas valve to the pilot.

Posted on Dec 16, 2008

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Most independent heater dealers have service departments, that can handle the service and repair of your heater. You may not have to take it to them.

From what you described, it sounds like either the Thermocouple has failed or that the pilot and the ODS Sensor (Which is part of the pilot, if it's a vent-free or flue-less heater) are clogged and need to be cleaned. Especially, if the pilot flame is curling upward and away from the thermocouple, when you try to light it.

If you want to attempt to clean it yourself, all you need is a can of compressed air with a straw nozzle (like you clean your computer with) to accomplish it. It does require some dismantling of the heater cabinet, to access the pilot assembly. If you decide to tackle it yourself, I have included a link to a demonstration of "How to Clean a Burner & Pilot Assembly".

http://www.desatech.com/techDocs/Cleaning%20Demonstrations.pdf

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Hello
You should be able to see it.There is a small flame in the bottom of the fire box at the end of the gas line tube inside the heater.

Also the gas valve will be turned to on.There are 3 positons on the gas valve, off pilot and on.
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Shastalaker7
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1 Answer

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