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GaryByer Posted on Aug 22, 2012
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Main burner comes on and one second later both main burner and pilot go off. Is this a lack of air - if so what do I do? A 2yr old 40 gal gas heater. [email protected]

Rheem Model # GG30T06AVJ00 It worked fine till gas co. worked on gas meter. then this problem started. Even the pilot will go out after one minute without the main burner being turned on as well. How I get more fresh air to the burner? The pilot burns with a blue flame while it is lit.

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Gene Haynes

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  • Water Heaters Master 5,391 Answers
  • Posted on Aug 23, 2012
Gene Haynes
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Joined: May 07, 2012
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What water heater do you have??
What Brand and model number, and what type of gas control valve?

You might have air in the gas line.
Copy following link to help troubleshoot by gas control valve:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

2 Related Answers

motor1258

Mike Butler

  • 6674 Answers
  • Posted on Nov 08, 2010

SOURCE: I have a 1999 Atwood

Look real close up where pilot tube is attached at fitting at burner end, and you will find a small pinhole on side of fitting. Use a paper clip, or similar, and poke it in that hole and work it around a bit to clean out any debris, or small spider web that may have collected in there. That's basically your intake air for your pilot, and when plugged it will cause a yellow weak pilot flame. Best option is to blow compressed air into that hole if available. That should get pilot burning blue again. Then,when cool, Clean off thermocouple end that sits above pilot flame as well with fine steel wool, or a small wire brush to allow it to sense flame better as it probably has gathered some soot on it now. Once that's all good, try lighting heater again, and see if that doesn't cure it. Be sure to adjust air shutter on burner so that flame is nice and blue, with just a little hint of yellow at tip. You want best/bluest flame, but not so much that it roars like a lion and jumps off the burner. Quiet but blue as well. If pilot was yellow and weak, and burner was roaring, it will draw flame from pilot , away from thermocouple, thus thermocouple cools too much and shuts down gas.

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Bill Johnson

  • 306 Answers
  • Posted on Jul 14, 2009

SOURCE: I have a 6 gal Atwood hot water heater. I can

Kenny did you change the thermo coupler?

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Related Questions:

4helpful
2answers

U can light the pilot lite,turn 2 ON it will stay lit 4 a couple of minutes then go out? If u turn the knob 2 low,med. It goes out pretty much immediately?I changed the thermocouple,blew the lines ou

Is the thermocouple secure, routed properly, no kinks, no sharp bends? Is the end of the unit properly aligned so the hottest part of the pilot flame is hitting the unit. Did you hold pilot switch in the light position for at least 30 seconds, before you set the gas valve to on? If all above OK, try this. Light the pilot using barbeque lighter once it lights keep the lighter on the t-couple for 30 seconds, then set the valve to ON and keep the lighter where it is. Once the main burner lights, remove the lighter. If the burner and pilot go off, your gas valve is bad.
0helpful
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Junkers manual gas hot water

What are you expecting to happen?

I assume the water heater and water inside it is cold (otherwise you would not be lighting it). You light the pilot. The main burner comes on and the pilot lights it. The main burner should stay on until the tank is hot, When the tank gets hot the main burner should shut off but the pilot stay on. If you draw hot water, cold water will run in and cool the tank. If yu do nothing the tank will eventually just cools off. then the main burner should come back on to reheat the tank.
0helpful
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Pilot will light after 30 seconds when you try to move knob to on position the pilot goes out and heater won't ignite.

You need to replace the thermocouple.
When you light the pilot it is supose to heat the thermocouple.
the thermocouple produces a small electric current which allows the gas valve to open and keep the pilot going. and allowing the main burner to come on.
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Burner lites but goes out after 2 or 3 min.

the white rodgers gas control needs to be replaced;
the way it works is: the thermocouple opens the pilot gas circuit and, holds it open
when it heats up by creating a magnetic field in the gas control then: when you turn
the knob on the gas control to "on" a valve inside the gas valve opens the main gas circuit and, electricity supplied by your RV keeps it open.
the main gas coil inside the gas valve is defective and, can not hold the main gas circuit to the burner open anymore.
4helpful
2answers

Pilot light keeps going out

Either the pilot light orfice is dirty, and you will need to pull it out and clean it, or the thermocouple is bad. If the pilot goes out as soon as you let the button go then it is most likely the thermocouple. If the pilot stays lit for a few days or hours then you will need to clean the pilot orfice, heres how:
1 turn off the gas supply
2 unhook the main burner gas line from the thermostat, this is the line that goes to the burner
3 unhook the pilot supply line it is usually next to the main burner line
4 unhook the thermocouple from the thermostat
5 remove the burner assembly
6 take the orfice out of the pilot line and clean it out by blowing thru it, use an air compressor if needed.
7 reassemble and light pilot
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The pilot light blows out every time the main burner shuts off. It will light, the main burner comes on, everything seems ok until the main burner shuts off, then the pilot light goes off also as if the...

it's the thermocoupler ( about $20 ) that is bad replace it. if that doesnt do it it is the box with the on/off/ pilot button ( about $175 ) I found a complete unit at www.americanrvcompany.com for $275 plus shipping ($300 total) and that is how i fixed the exact problem with mine.
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Rheem/GE power vent water heater, pilot lites, but not the main

I would check to see if the switch on the blower pressure sensor is closing...When T-stat calls for flame, the circuit starts the blower, then the blower pressure sensor switch closes to allow the main gas valve to be powered.
0helpful
1answer

Water heater pilot light

it also sounds as though the pilot injector could be blocked so when the boiler comes on it extinguishes the pilot & then when the burner goes off boiler shuts down, or also the pilot rate maynot be set right, so when the main burner kicks in it robs the pilot of the gas it requires.
It could be that, or there is lack of ventilation for the boiler, so you get flame lift off when the boiler fires?
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