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Old 02-13-2015, 07:51 PM   #1
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Atwood Water Heater Gas Valve Solenoid Tip

My neighbor has a 2 year old SOB trailer with a Atwood 10 gal water heater (similar to ours, but no mixing valve). He's been running it on propane all winter since we are paying .79-.89 a gal. for propane!!! Anyhow it quit all of a sudden yesterday and he asked for my help. After going through all the normal common areas that usually plague this heater, I found that one of the solenoids on the gas valve was open internally. Both valves must function for gas to flow for safety reasons. I went to looking for a set of solenoids and found that Atwood water heater doesn't service just the solenoids.....only a gas valve assy. for $100+. Ouch! Long story short, after doing some research, I found that Atwood Hydro-flame furnace does service the solenoids separately. They are listed as White Rodgers Valve Coil part #41-1738. You must install new female wire terminals to use these solenoids, otherwise they are the same. Cost is $20. per solenoid. Our local RV parts house here in little Hemet, CA stock 6 since they are somewhat problematic. Hope this helps someone down the line! Click on photos to enlarge. rockin'
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Old 02-13-2015, 08:27 PM   #2
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That's great information! Years ago I ran into the same problem and had to rewind one of the two copper coils! It would have been a whole lot easier to just replace the coil.
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Old 02-13-2015, 10:18 PM   #3
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Thanks for the heads up!
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Old 02-14-2015, 09:37 AM   #4
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Tommy, how did you isolate the issue to the solenoid (s).
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Old 02-14-2015, 01:45 PM   #5
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Quote:
Originally Posted by chief02 View Post
Tommy, how did you isolate the issue to the solenoid (s).
Dumb luck....just kiddin'! When running on propane you should have B+ to both gas valve solenoids which I did. I could feel the solenoid click so thought all was OK. Wrong....one solenoid was open and not functioning. They are so close to one another it's hard to tell. Used a DVOM to check for resistance in each solenoid. One was open (bad) and one was good. Like I said earlier, both solenoids must be energized to allow gas flow. After installing the new solenoid and terminals, I dry tested it before reinstalling it on the heater. Simple as that. rockin'
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