Question about RTO Atwood Water Heater - 6 Gal LP

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Looking to find replacement ignition board for atwood pn 91226

Board arced burnt out need replacement

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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mrhotandcold
  • 248 Answers

SOURCE: Atwood motorhome furnace will purge, ignite and

problems may be the fan is not tripping in

Posted on Oct 12, 2009

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c7121
  • 160 Answers

SOURCE: Atwood GCH10A-4E won't heat in electric mode. 12v

CHECK THE FUSES AND CIRCUIT BREAKERS IN THE CONVERTER BOX. MAKE SURE THE 110V SWITCH BEHIND THE WATER HEATER IS TURNED ON. IF THERE IS POWER AND "ALL" THE 110V SWITCHES ARE ON, TIME TO OHM OUT THE HEATING ELEMENT, LOCATED UNDER THE BOX BEHIND THE WATER HEATER.
IN ORDER TO HAVE 12V AT THE CIRCUIT BOARD, 112V POWER HAS TO GO THRU THE RELAY. SOUNDS LIKE U HAVE A WIRING PROBLEM SOMWHERE, EITHER AT THE SWITCH OR AT THE WATER HEATER SOMEWHERE.

Posted on Dec 15, 2009

motor1258
  • 6674 Answers

SOURCE: Have an G6A-8E Atwood water heater. It Starts fine...

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.

Posted on May 26, 2010

motor1258
  • 6674 Answers

SOURCE: Water just gets luke warm on propane or electric.

Run it on propane and let water heater go through a heating cycle, and when it shuts off, CAREFULLY , pull the lever on the pressure relief valve slightly and see how hot the water feels there. If it's hot there, then it's more than likely a problem with your by-pass valve(s) at the back of the water heater. Either in the wrong position, or faulty, and allowing hot and cold to mix. If in doubt which one it may be, you may be able to remove by-pass set-up completely, depending on what system you have. What the ultimate goal is would be to attach your incoming cold line directly to bottom fitting of water heater, and outgoing hot line, to the top. Not unusual in some systems for one of the shut-offs in between the 2 lines to stay partially open, and allow cold to mix with hot, thus -warm only. If it's not hot at pressure relief valve, then I suspect a faulty thermostat, but that would mean they both (hydro and gas) would have to be faulty which is unlikely.

Posted on Jun 18, 2010

motor1258
  • 6674 Answers

SOURCE: I have atwood GC6aa-9e, will not fire the ignition tries 3 sets

Have you tried temporarily removing the thermal cut-out from the circuit to see if ignites then? It's the little resistor looking thing inside the plastic sleeve/cover that runs to thermostat. Disconnect it from the thermostat terminal, and from wire that is on the other end, and you should be left with a female spade connector at end of that wire. Connect that directly to thermostat terminal where the other part was connected, and try it. If it works, the thermal cut out is no good and needs to be replaced for safety reasons, in case of flame out of control, it blows and shuts gas valve off.

Posted on Jun 24, 2010

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1 Answer

Atwood water heater g6a8e lights but flame goes out after 5 to 10 seconds. I replaced igniter / thermocouple and it worked for a while but problem is back. So I need to replace circuit board?


Make sure you pull connector off and clean it and contacts on board. Be sure igniter is in flame good too. Does it have the thermal cut off in-line? Its the little resistor looking piece inside the plastic cover. If it does, and still running a few seconds and going out, remove it from the circuit, and connect wire end to where you removed cut out from, thus eliminating it from the circuit, and test it. If that cures it, replace that cut-out, as it is a safety device in case of flame up, it cuts gas off to prevent fire. Just leave it out long enough to test it.

Oct 19, 2013 | Atwood Mobile Products Atwood Water Heater...

1 Answer

Heater has low voltage and will not run


Attach black on meter, or ground clamp on test light to good ground such as cooper line. Test for 12vdc at gas valve when switch turned on and you hear or see ignitor sparking. If no 12vdc, backtrack. Follow red wire from gas valve to (ECO), (both terminals,) then same to thermostat (THERM) . If you get 12vdc on one side, and 6vdc or no voltage on the other, replace it. If you've got 12vdc going to gas valve, and don't feel or hear it "Click" when trying to ignite, try a quick "rap" on valve to see if it's stuck. If valve is opening and you hear gas, but no ignition, clean burner tube good and retry.

Nov 28, 2012 | Atwood Mobile Products Atwood G6A-8E...

1 Answer

I have an Atwood G6A-8E (gas only with DSI switch), the DSI light doesn't come on the and the water heater will not ignite.I have checked the battery, changed the gas.what should I do next?


Check for a bad fuse in panel first, then with a 12 volt test light or multimeter, check for power in to switch, as well as out when in on position if it's easy to get to. If not, turn switch on and test for voltage at brown wire to thermostat terminal, that comes from inside at back of water heater from switch inside. If it has cut-out switch in plastic sleeve attached, be sure to check for power on both ends of that cut-out switch. If power only in but not out, replace it. As I said,that brown wire comes from switch, so if no power to it, check at switch. The other brown wire goes back to connector on ignition board. If power is there, turn switch off, take an eraser on end of a pencil and rub contacts on ignition board/module to clean them off, as well as spray electrical cleaner on contacts of connector to make sure you have a good connection. Check all ground connections as well, and if you have 12 volts at brown wire to connector on ignition board but still no spark, replace ignition board/module.

Sep 14, 2011 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

I have atwood GC6aa-9e, will not fire the ignition tries 3 sets


Have you tried temporarily removing the thermal cut-out from the circuit to see if ignites then? It's the little resistor looking thing inside the plastic sleeve/cover that runs to thermostat. Disconnect it from the thermostat terminal, and from wire that is on the other end, and you should be left with a female spade connector at end of that wire. Connect that directly to thermostat terminal where the other part was connected, and try it. If it works, the thermal cut out is no good and needs to be replaced for safety reasons, in case of flame out of control, it blows and shuts gas valve off.

Jun 06, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

I have a atwood hot water heater GC6AA-10E its o...


Does yours have the little cut-out diode looking thing in the plastic jacket installed between power wire and thermostat? If yes, remove it from the circuit and connect female spade of wire, to male spade of thermostat,(just removing it to by-pass it) and try it now. Let me know what happens.

May 20, 2010 | RTO Atwood Water Heater - 6 Gal LP

1 Answer

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

I have a RV Atwood water heater and it ignites and starts ok but shortly thereafter it shuts off. I wait a minute or two and it restarts but shuts off again. Could it be the circuit board, or the sensor in...


You may have a control board issue, there is no sensor that is IN the water tank your thermostat controller are exterior to the tank under the black foam looking piece which I think is where your trouble lies

Feb 19, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

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