Question about RTO Atwood Water Heater - 6 Gal LP

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G4-7 atwood water heater lights great, heats water but when it cycles the pilot goes out no hot water

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Sounds like the burner flame may be too strong (jumping out from burner tube) . Some people think the louder the better, but that is not correct. When burner shuts down like that, it has a tendency to snuff out pilot as well. Adjust your air shutter at burner so that the flame is a nice blue, or with just a hint of orange/yellow at the tip. Whatever setting that keeps the flame solid from burner tube, and not a big gap between tube and flame. Signs of soot (black) up the cover, or side of trailer means it's running too rich, and you've gone too far thus needs more air. Keeping the flame blue but still right out of the burner, actually heats better, is quieter, and should eliminate that pilot getting snuffed out. Pilot should also be a nice blue flame as well. There may be a problem with positioning of the burner tube as well, but doubtful if it has been running well in that position before. Let me know what happens.

Posted on May 13, 2010

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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.

Jun 21, 2011 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Hi, I have an old Atwood gas water heater (model j81 I think) this is a manual unit which we have to light the pilot light on. It will light and we can heat water for a short time only before it goes out...


That is not a model number that sounds familiar. Should be a tag on side of water heater behind cover, outside. If it has the little arm adjustment for temperature on top of gas valve, simply move it over a little to the left to increase water temperature, and try it until temperature is what you are happy with.
I'm assuming when you say it goes out completely that the pilot remains on and water heater re-lights when called for? If you adjust that temperature lever over, and water still doesn't get hot, you need to replace gas control, as thermostat is built in to it.

Dec 07, 2010 | RTO Water Heaters

2 Answers

The pilot on My atwood water heater will not stay lit after I release the knob. I have replaced the thermocouple and have a nice blue flame.


Did you make sure the connection between the thermocouple and the control is tight and that the tip of the thermocouple is in the flame?

Jun 28, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

I have atwood pilot relight model gc6aa-8 pilot will light but after tank heats up & there is no call for hot water,pilot is out and very hard sometimes impossible to relight.


So are you saying that the first initial lighting of the pilot, without turning to on, works o.k., good flame etc, ? If not sure, try lighting pilot only, and leave setting at pilot only, and see if it's a good flame, and get back to me.

May 25, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

The pilot light & will stay lit. untill the burner cycles on/off


MAKE SURE THE BURNER TUBE AND ORIFICES ARE CLEAN. MAKE SURE YOU HAVE THE PROPER LP PRESSURE.

Oct 05, 2009 | RTO Atwood Water Heater - 6 Gal LP

2 Answers

After a few minutes of burner heating the water, gas shuts off.


A couple of things to check:

If possible, remove the pilot gas assembly and clean the gas jet and thermocouple - they can get carboned up and stop working properly. Make sure the pilot flame and deflector is aimed properly and making the thermocouple glow red hot. If the problem persists, you may want to replace the thermocouple and also check the propane regulator.

Apr 20, 2009 | RTO Atwood Water Heater - 6 Gal LP

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