Question about RTO Atwood Water Heater - 6 Gal LP

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I own a 31' trailer which has an ATWOOD G6A-8E RV Water Heater, 6 Gal electronic ignition, 2 yrs ago the pressure relief valve would open up and empty the hot water tank completely, it did this several times throughout the season. Last year i only turned on the tank when required and shut off afterwards. This season when i was opening up the trailer and tried to turn on the switch... nothing the red light wouldn?t turn on, but i can hear the clicking sound coming from the tank ???

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Most electronic ignition models only show the red light if there is a problem, (did not ignite) for one reason or another. To start with, make sure your propane is on, and you have a good flame at stove top burner, just to be sure the water heater is getting propane, and all air is bled from the line, which may cause water heater to go into check. (red light) If it does, shut switch off, and retry. Let me know what happens. As far as pressure relief opening and emptying the water heater, and your sure it's not a faulty pressure relief valve, then there's 2 things to start with checking. 1st, does the water seem extremely hot, thus a possible faulty thermostat &/or ECO . Secondly, if the incoming water pressure is too high, that will also cause it to leak bad. Try installing a pressure regulator (usually 40 psi.) at your hose connection. Let me know what you find.

Posted on May 25, 2010

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1 Answer

Need to replace G6A-6E Atwood waterheater, what replacement model can I use?


Why not the same model/size? Atwood 6 gal, works on propane with electronic ignition. Or, you can get the 6 gallon with electronic ignition, and electric element as well provided you are willing to run hydro to water heater as well, if not already there. Check any RV parts site for prices and availability. Some places are out of stock currently. I assume your current tank is leaking?

Sep 29, 2012 | RTO Atwood Water Heater - 6 Gal LP

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I am looking for a troubleshooting procedure for an Atwood G6a-8E RV water heater. Unit has electronic ignition and does not want to ignite.


Very simple, do you have a 12 volt light tester, or multimeter?
First thing to try is to remove the thermal cut-off from circuit and try it. That's the little diode like thing inside the plastic sleeve below pressure relief valve. Remove it from the circuit and hook female spade from end, directly to thermostat where other end was before. If that does it, replace thermal cut-off.
If not, start testing for 12 volts when trying to ignite, from one side of thermostat, then over to ECO, or just go directly to gas control connection. If 12 volts getting to gas control, thermostat and ECO are o.k.
Are you getting spark at electrode?

Aug 27, 2011 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

Water heater fires and runs for 2 or 3 minutes and then cuts off.It tries to refire 2 or three times but wont .Red light inside comes on as if it is out of gas.I changed the T-stat and ECO and it still...


First of all, lets see if water is hot already by releasing pressure relief valve slightly and seeing if water is already hot.BE CAREFUL NOT TO SCALD YOURSELF! Shut water pressure off, first, but be aware it will still be under pressure at first.. Just hold a cup, or something under it and open it up slightly, or at least feel pressure relief valve to see if it feels warm/hot to touch. May just be by-pass not set properly in back of water heater. Let me know if hot from pressure relief at outside on heater.

Dec 23, 2010 | RTO Atwood Water Heater - 6 Gal LP

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I have a 1997 Fleetwood Bounder with an Atwood G6A-8E water heater. My pressure relief valve was leaking heavily, and I think it shorted something out, because now my electric igniter will not light the...


Have you checked your fuses? there should be a removable cover to pull off there will be a fuse in side that powers the self ignite..can you take a pic of the panel and post it or send it to my email?

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Just purchaced a 99 jamboree with an atwood G6a-8e water heater. while on a trip I lit the water heater, and after 30 minutes someone told me water was leaking from the side. I noticed the pressure relief...


It's gas operation only, but has electronic ignition for propane. ( just to confirm, if you look at back of water heater, it would have a metal or black plastic cover and hydro cable going in side or top of it.)
There are usually 3 things that may cause pressure relief to leak. 1) Faulty,corroded pressure relief valve, which usually needs to be replaced if it goes faulty. 2) water temperature is getting too hot, which could indicate a faulty thermostat. 3) If your hooked up to city water, the pressure may be too high, causing excess pressure build up in hot water tank, thus pressure relief opens. If your running off your on board pump, this is probably not the cause, as they are usually set at 40 psi.
Ist, - try pulling lever on relief valve slightly open ( careful it's hot !!) to clean out any calcium that may be logged on seal thus causing leak. If that doesn't do it, and the hot water isn't running out steady and appear to be under extreme pressure while leaking, then I'd change the pressure relief valve. Remember when you do, shut off water to system, and relieve pressure by opening a tap, and pressure relief as well after that. New one shouldn't be too expensive, just make sure you get same thread, 1/2"NPT or 3/4"NPT. Use a little teflon tape, or pipe dope whatever you prefer when re-installing as well as clean threads a little before.
If it really starts gushing out pressure relief when heating or heated, and water seems hotter than normal, it's more than likely a faulty thermostat. I'll wait for your reply on what condition your experiencing before I go in to how to change the thermostat.

Nov 17, 2010 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

I have an Atwood water heater model G6A-8E. When


If this model has a thremo couple you might want to check it. It sounds like that is the problem.

Jun 07, 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

2 Answers

Burner lights but will not shut off. then pressure


CHECK TO MAKE SURE THE WATER TEMP IS AT THE NORMAL OPERATING RANGE. USUALLY AROUND 120-130 DEGREES. IF IT IS, CHANGE OUT THE PRESSURE RELIEF VALVE. IF THE TEMP IS OUT OF SCALE, CHANGE OUT THE ECO AND TSTAT.

Jun 28, 2009 | RTO Atwood Water Heater - 6 Gal LP

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