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 > Atwood water heater won't stay on.

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Paul1944

Blanchard, OK

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Posted: 09/13/20 05:04pm Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

"Model is GC6A-8E
Flame is more orange than blue.
There is a wire with what looks like a resistor in it, what is that for?"


8E has separate controls for electric & gas
ELECTRIC:
120VAC comes from a Circuit Breaker to on/off switch (backside of WH Tank) then thru set of T-stats to element (also backside of WH Tank)

GAS:
12VDC comes from Fused source to 'thermal cut out' (fuse in clear tubing----it blows at 190*F if flame blowback occurs and stops ALL DC to water heater. One shot device --replace if bad)
From thermal fuse DC goes to/thru TT-stat then to circuit board
Circuit Board then sends DC to ECO/Gas Valve AND spark electrode


Posted earlier
When flame lights off......is flame BLUE and quiet (very slight roar)?
IF NO (YOU stated more ORANGE then Blue)
Might need to adjust air shutter ---typically only needs to be roughly 1/4 open
Might need to clean orifice (soak in alcohol/air dry), clean burner tube (small bottle brush)


On second check I find that model # is G6A-8E, no C. I tried everything suggested and still no luck keeping it running, since the red "DCI-FLT" comes on immediately when I turn on the switch I'm beginning to suspect I have a bad circuit board. What do you think?


Paul & Margie

enblethen

Moses Lake, WA

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Posted: 09/13/20 05:53pm Link  |  Quote  |  Print  |  Notify Moderator

Look at your furnace. Many use the same circuit board. If yours is the same, swap it with the water heater. If it works, you know it is the circuit board.
Recommend Dinosaur Electronics version. available on Amazon


Bud
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BFL13

Victoria, BC

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Posted: 09/13/20 06:33pm Link  |  Quote  |  Print  |  Notify Moderator

I have had lots of WH problems, solved by help here. Nevertheless, I am having trouble following this thread to be able to suggest anything useful.

1. Is the red light, the red light inside the RV that always comes on as soon as you turn on the WH (with gas) and then goes out when the flame starts?

2. When it runs for a few minutes, does that red light go out at first as it should, but comes back on when the furnace quits?

3. After the 10 minutes or so when it comes back on, does the red light go out again?

4. After that, how long does it run?

5. If it has water in it, then the real question is whether that water is already hot from being on electric mode prior. That would perhaps explain why it goes out for 10-15 minutes, giving it time to cool again before it cycles. Not sure about that---the water will stay hot a long time unless it gets used and replaced with cold water refill

Just very confusing (but I am easily confused so no worries [emoticon] )


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on Ford E350-460-7.5 Gas EFI
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2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
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Old-Biscuit

Verde Valley

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Posted: 09/13/20 07:46pm Link  |  Quote  |  Print  |  Notify Moderator

G6A-8E is a GAS Only Atwood

2 things can cause Red Fault Light
* Flame failure
*ECO tripping OR bad connections on terminals/spade connections

Check continuity thru ECO
Check IF RED wire has 12VDC on it FROM circuit Breaker when switch is on
Could very well be bad circuit board 'Valve Track' circuit


Is it time for your medication or mine?


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Off the road still Debt Free Jan. '14

JimK-NY

NY

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Posted: 09/13/20 10:20pm Link  |  Quote  |  Print  |  Notify Moderator

I would first check all the connectors. Atwood uses spade connectors that often do not work well. Secondly I would replace the detector assembly. They are inexpensive and often fail after a few years of use.

Gjac

Milford, CT

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Posted: 09/14/20 05:57am Link  |  Quote  |  Print  |  Notify Moderator

Attwood has a good troubleshooting guide on line and tell you how to test the board. If it is not a potted board I would just remove it and look at the backside and see if there are any burned areas on the solder tracks or any burned components. 2017 is fairly new, but boards do fail howeverI would remove and clean all connections first.

pasusan

Northernmost PA

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Posted: 09/14/20 07:27am Link  |  Quote  |  Print  |  Notify Moderator

Paul1944 wrote:

since the red "DCI-FLT" comes on immediately when I turn on the switch I'm beginning to suspect I have a bad circuit board. What do you think?
Unless I missed it - nobody seems to be responding to this. It is perfectly and completely normal for that light to come on immediately. That shows you've turned on the switch and there isn't a fun flame yet - it takes a few seconds to light.

As far as your flame going out after it lights - that is what your problem is.


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Old-Biscuit

Verde Valley

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Posted: 09/14/20 10:28am Link  |  Quote  |  Print  |  Notify Moderator

Suburban uses the Fault Light ON when switch is turned ON then it goes out when trial for ignition occurs then will come back on IF flame fails

Atwood??????
Fault light is triggered by a fault...flame failure or ECO

Fault Light Should NOT come on when 1st turning switch on



See pg 21 for testing 'Power Track', 'Lamp Test', 'Valve Track'
Atwood Service Manual

BFL13

Victoria, BC

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Posted: 09/14/20 11:12am Link  |  Quote  |  Print  |  Notify Moderator

My gas only Atwood red light comes on first then goes out when the flame catches (you can hear that) and stays out

When I was having troubles getting it to light, the red light stayed on or would come back on after going out.

If the OP answers my earlier questions, that might help.

Paul1944

Blanchard, OK

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Posted: 09/15/20 01:13pm Link  |  Quote  |  Print  |  Notify Moderator

BFL13 wrote:

My gas only Atwood red light comes on first then goes out when the flame catches (you can hear that) and stays out

When I was having troubles getting it to light, the red light stayed on or would come back on after going out.

If the OP answers my earlier questions, that might help.
,

The red light comes on ONLY when the main switch is initially turned on. As soon as the WH ignites, the red light goes off and never comes back on again. After shut down for about 10-15 minutes the WH ignites again, the red light does NOT come on, runs for about a minute or so then shuts down again. This is a gas only WH, no electric.

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