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10-19-2014, 07:24 AM
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#1
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2 Rivet Member
2005 19' Safari
2007 23' Safari SE
Onekama
, Michigan
Join Date: Nov 2012
Posts: 59
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Water Heater, one and done
We have an Attwood hot water heater, LP only. It worked great until this last outing. It ignites as it is suppose to once and not again. It will heat the water, not excessively, shut off and and not relight. It will then require turning off, waiting for awhile, then turning back on. ???
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10-19-2014, 08:18 AM
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#2
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Overland Adventurer
1991 34' Excella
2009 34' Panamerica
Telluride
, Colorado
Join Date: May 2012
Posts: 2,476
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Try unplugging the electrical connector a few times. Those connections can oxidize resulting in poor performance. A little smear of light grease on all the connections helps. If not this check your high limit switches, then unfortunately the circuit board itself. If yours is old enough not to have a fuse on the board, then it's highly probable the board is shot..... The unfused design had a weak trace.
Best luck
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10-19-2014, 02:40 PM
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#3
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2 Rivet Member
2005 19' Safari
2007 23' Safari SE
Onekama
, Michigan
Join Date: Nov 2012
Posts: 59
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Thanks for the reply and advise. I have cleaned the clean appearing connections with a wire brush. Brush cleaned the igniter. The control board appears to have a fuse. It's a 2005 model. After more intensive experimentation, the water will heat but not a complete 6 gallons. In running the water after it has run and shut itself off, I'll get about 2-3 quarts of hot water, then all cold. Again, then I have to shut it off and wait a considerable amount of time and retry. If it has been off long enough, when I turn it back on it will relight. But it will not on it's own.
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10-19-2014, 02:53 PM
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#4
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Rivet Master
2014 27' FB Eddie Bauer
Chelsea
, Michigan
Join Date: May 2010
Posts: 1,792
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In my humble opinion, I would not mess around with a propane device unless you have a lot of experience with them. I would take it to Woodland RV just north of GR.
Best of luck!
1,
__________________
Bob Martel
WBCCI# 5766
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10-19-2014, 04:07 PM
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#5
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Overland Adventurer
1991 34' Excella
2009 34' Panamerica
Telluride
, Colorado
Join Date: May 2012
Posts: 2,476
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Ok sounds like the hi limit switches are bad. These are $11 at any rv dealer, it's a quarter turn replacement type deal! This is a normal user friendly repair.... The 2 quarter sized thingies under the black foam....
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10-21-2014, 07:45 AM
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#6
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Rivet Master
1995 30' Excella
Bowie
, Maryland
Join Date: Apr 2005
Posts: 2,345
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Yep, start with the thermostat and ECO. They're cheap and easy to replace, and do sometimes fail.
__________________
1995 Airstream Classic 30' Excella 1000
2014 Ram 2500 Crew Cab with Cummins 6.7L Diesel
Sold but not forgotten: 1991 Airstream B190
Sold: 2006 F-250 6.0L Powerstroke Supercab
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10-24-2014, 03:13 PM
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#7
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2 Rivet Member
2005 19' Safari
2007 23' Safari SE
Onekama
, Michigan
Join Date: Nov 2012
Posts: 59
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One and done
Replaced the E.C.O. and Thermostat. Absolutely, no difference. I get one gallon of hot water and the rest luke warm. This after running about 45 minutes. The flame is robust and I would have thought I would get more hot hot water, but there was also cold water replacing at the same time. Which would ordinarly tell the heater to restart. It does not. Now what the Circuit Board?
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10-24-2014, 08:22 PM
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#8
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Rivet Master
1974 Argosy 26
Morrill
, Nebraska
Join Date: Nov 2009
Posts: 6,014
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Are you sure the water heater is not in bypass mode ?
Will it relight on it's own after you run out of hot water?
Is there a thermostat on your particular model? Big red knob on the gas valve.
Sounds to me like the high temp limit. But more like a thermostat. Since you have an electronic controller. It could also be the culprit.
Sent from my iPod touch using Airstream Forums
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10-24-2014, 09:05 PM
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#9
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Overland Adventurer
1991 34' Excella
2009 34' Panamerica
Telluride
, Colorado
Join Date: May 2012
Posts: 2,476
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It does sound like it might be in bypass mode, then again could be the circuit board. It's free to check the bypass valve, $140 for the replacement board. They can fail quickly.
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10-25-2014, 06:47 AM
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#10
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2 Rivet Member
2005 19' Safari
2007 23' Safari SE
Onekama
, Michigan
Join Date: Nov 2012
Posts: 59
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I have been humbled and my ignorance/stupidity exposed. At the same time I'm very happy to say thanks everyone for staying with me on this and convincing me to check the position of the by-pass valves. It was in particial by-pass mode. That probably makes me sound even dumber. Right now I don't care. For the small price of the ECO and T-stat that I replaced, I'll consider it preventive maintenance.
Thanks again. Now, I can put it away till February.
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10-25-2014, 08:46 AM
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#11
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Overland Adventurer
1991 34' Excella
2009 34' Panamerica
Telluride
, Colorado
Join Date: May 2012
Posts: 2,476
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Nah....
Just remember all this next spring!
Happy winter, it's 95 in Phoenix today, hot hot hot!
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10-25-2014, 08:50 AM
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#12
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Rivet Master
1974 Argosy 26
Morrill
, Nebraska
Join Date: Nov 2009
Posts: 6,014
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We have all been there in one way or another. Glad you were successful.
Sent from my iPod touch using Airstream Forums
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