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Will not stay on geep going out - Reliance Natural Gas Water Heater Control

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Will pilot lit then burner and after it does this with just pilot on is that when it goes out. If this is what is happening ,pilot going out,then I would first change thermocouple. The thermocouple is usually on the bottom left hand side of gas valve.It will look like copper wire about as thick as a pencil lead. Remove burner cover and trace thermocouple line to where it mounts on pilot light assy.Thermocouple should be held in place by friction.Remove thermocouple from gas valve by lossenjng retaing nut,reach in burner compartment and grasp thermocouple at base.using small amount of force pull thermocouple from pilot assy and remove.You can get anew one at most hardware stores. Try to get one close to the length you have. A little longer ok. shorter no.Reinstall being careful when you tighten thermocouple nut as it is made of brass and valve body is made of aluminum.Very easy to cross thread or overtighten and strip threads. Make sure thermocouple is properly plased by pilot. Light piloy and hopefully this will tke care of it for you. THANKS

Posted on Nov 14, 2010


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