Question about RTO Atwood Water Heater - 6 Gal LP

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Water heater flame problem

#G6A-7E heater lights just fine and stays lit the problem is at higher altitudes the flame enters the flame tube but exits the end as if to much pressure extends 3 or 4 inches past the end at sea level the flames does not enter the flame tube but backs out past the igniter as if no pressure at all. tube is clean not blocked.

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Check your exhaust, see if its clogged or blocked, clean the flame sensors, I that does not work, then your gas valve is starting to go bad, there is a cap on it if you take the cap off you can turn the gas flow down a little bit,

Posted on Jul 14, 2013

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SOURCE: Atwood Water Heater G6A-7E, electronic

You are correct, there should be no flame after it shuts off. Pull the + wire off at contacts as well and see if flame remains, if it does, the gas valve is faulty (leaking by) and should be replaced.

Posted on Jul 22, 2011

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Hot water heater flame problem


What size is the orifice? Are you using LPG or CNG? What pressure is the regulator set to?

Jul 14, 2013 | RTO Atwood Water Heater - 6 Gal LP

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I have a new Atwood G6A-7 water heater. The pilot lights fine but gas flow, when it turns on, is so strong it will blow the pilot out. Certain times, it sounds and looks like a mini fire ball going


Clean burner tube with proper brush, such as long spring type for bar-b-Q burner tube that are available at most hardware stores, and make sure you have new burner tube aligned properly (straight on) with brass orifice on gas control. Then be sure to adjust air shutter for nice blue flame, with little orange at tip. Do not give so much air that flame roars or jumps off the end of the burner tube. Too many people think more air, less fuel, but actually, when flame roaring and jumping off end of tube, the heat passes through faster and it takes longer to heat the water inside the tank. Like I said, only enough air to have quiet, steady blue flame. If your not giving it enough air, you'll see dark soot on trailer above water heater, which indicates burning too rich, need more air, or perhaps pilot is partially plugged. Pilot flame should also be blue, not yellow/orange. Small air intake hole on side of fitting just before pilot tube can get spider web, or debris in it as well. Use air to blow that out or a piece of wire like a paper-clip to clean inside that hole.

Dec 12, 2012 | Atwood G6A-7 G6A7 Manual Pilot 6 Gallon RV...

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I have an atwood g6a-7e water heater. The thermal fuse is bad. i need to know what temp and coltage the thermal fuse for this heater is. The numbers on the fuse do not mach any thing on the web.


ANy RV dealer should stock that item . You can temporarily by-pass it for use but be aware you have no safety should a flame-up happen due to spider webs etc getting in to burner tube.

Sep 13, 2012 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Rheem 22V50F1 pilot won't stay lit. Changed thermo couple & it lit, ran then went out. Let it sit overnight & it lit, ran then went out. What next? p.s. The unit is 5 years old. Thanks


If pilot lights and flame is robust and clear blue, and pilot goes out later, then some suspects can be excluded: air in gas line, low gas pressure, thermocouple is overtightened (finger-tight + 1/4 turn), thermocouple not positioned correctly in the flame, dirty pilot tube.
If flame is yellowish and small: then clean pilot tube and combustion parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean
Remaining suspects can include: air in gas line, low gas pressure, bad gas control valve, tight house so household vent fans pull air down water heater vent that blows out pilot, hot attic with inadequate ventilation, water dripping down vent.

Open following links to read troubleshoot resources.
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Aug 16, 2011 | Rheem 50 Gallon FVR NATGAS Water Heater...

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Atwood Water Heater G6A-7E, electronic ignition. Should after the water is heated a small flame is still present at the orifice. It is like a pilot flame. I thought that the electronic ignition was to...


You are correct, there should be no flame after it shuts off. Pull the + wire off at contacts as well and see if flame remains, if it does, the gas valve is faulty (leaking by) and should be replaced.

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

1 Answer

It has soot build up and doesnt get hot


the soot build up is evidence of another problem. Your fuel air ration is messed up. Is it possible you are at a higher altitude than the water heater was set for? When a water heater is installed at an altitude higher than 2,000' the manifold pressure on the gas valve has to be turned down. if that isn't done your wh will overfire and burn a rich sooty flame. You would expect to see a yellow flame rather than the ideal blue flame with yellow tips.

If this sounds like your problem then you need a proffessional to service the wh and reset the manifold pressure to the value in the owners manual for the appropriate altitude.

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I have a G6A-7E electronic ignite water heater.


Make sure propane is on and getting to your stove burners ok, first, then try switching it back on. If it fails to ignite, shut switch off and try a couple of times, if still no ignition, get back to me.

May 24, 2010 | RTO Atwood Water Heater - 6 Gal LP

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Have an G6A-8E Atwood water heater. It Starts fine and shuts down after a couple of seconds. I can see the diode in the control board continue to spark after ignition I replaced the igniter.


If it has the little thermal cut-off in power wire to thermostat (has a little plastic jacket over it) try removing it, and connect female spade from power wire, directly to male spade on thermostat, and see what happens. Also, make sure electrode is positioned in flame good for flame sensing properly.

May 21, 2010 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Atwood g6A-7E wont turn off keeps heating water till tmp drips


Some dripping at pressure relief valve is normal, but are you saying it continues to run excessively hot? Does water in trailer feel extra hot?
The ECO, and/or Thermostat, should cut the power/flame before it gets too excessive.

Apr 03, 2010 | RTO Atwood Water Heater - 6 Gal LP

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

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