Atwood Water Heater Not Heating, Won't Light With Wiring And Diagnostics - Donald McAdams




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Mike Willems: Ok I think your right about the dirty connection. Today I was messing around with the plug that plugs into the board. I moved it in and out abit and It actually tried to spark. So tonight I'm going to get some electrical cleaner and clean all of the connections. If that doesn't work I'm going to try buying a new plug for it if I can.

Mike Willems: Ok my issue is the water heater is getting power 12.85 to the tstat but not to the eco. Is it just the thermostat or the main switch. This heater has never worked since I bought the trailer but a week ago it actually fired up. But now it won't fire up again. Not sure why it worked the one time and now nothing at all again.

Scott R: Very informative video, but my problem is element not shutting off. Atwood GC6AA-10E that I always run on 110VAC and never on gas. The heating element does not shut off and it was scalding hot. I replaced both the Tstat and ECO, but still have the same problem. From what I understand there is nothing but a relay and element in the back of the unit inside the RV. Am I correct in assuming the board is the only thing left that is bad? Any opinion? Thanks.

helene lewis: I am not home right now but will check oven hood vent when I get there. Thank you so much for your quick response.

helene lewis: Hi Don, Perhaps you can help answer a question for us. We recently purchased a 2002 Trail lite R Vision B+ and have no idea where the remote switch is located in the camper for the hot water heater. Can you direct me to who or where I might find out this info or perhaps you can help. It is an atwood hot water heater with electric ignition. Thank you

o1mtech: I'm hoping that you can help with an electrical question. My older water heater, the one you have on the right, with three wires coming from the main electrical board, went bad and I couldn't find an exact replacement unit, so I had to settle for the newer unit, the one you have shown on the left. This new unit comes with 4 wires, while my older one had 3. The dilemma I have is which wires go where. The unit has 4 wires, Orange, Dark Green, Dark Blue and white.
The camper has 3 wires, Dark Brown, Light Blue and Light Green.

Is it possible to hook this up correctly?

Bob Langlois: Hi Donald, this is great. I was using it to help diagnose my water heater this past weekend while at the camp site. The water heater worked great on LP all season, mostly when camper was connected to AC power. This weekend we were on battery but it would not fire. The board ticks, the igniter sparks, but the gas does not seem to flow and it goes into lockout mode. I tried resetting multiple times, cleaned the connectors, checked for blockages in J-tube, etc...nothing.

I was able to borrow a Fluke meter and checking the voltage at the ECO red wires both side I only get about 6-7V. I tried to check the gas valve Ohms, but cannot tell where you put the black probe on the valves. Another note, is that my batteries were not fully charged, but everything else in the camper worked fine. I've since tried it while plugged in at home as well. No change.What do you think? thanks!

Tankless water heater Aurora: Thanks for the ideas you have shared here.

Ed Soniat: You don't discuss when it lights (good spark and flame) but then shuts down in a few seconds. Something like a thermocouple failure or control board failure.

Richard Messer: Don Your videos have helped me several time. But I am stumped on this one. My Atwood gas water heater works but will not always automatically start when the water temp gets low. last week it worked fine. This week not so much. When I arrived at a new destination It would not fire at all I wiggled the plug on the board took it off and sprayed it with an electrical spray plug it back in and It seems to work now. However about once a day it will not re-ignite on its own and I will have a red light on the switch. I will turn it off and back on and get ignition. I am getting good hot water. When it ignites. I have checked everything you mentioned in this video to check and all seem to work. What do you suggest?

Alain Godbout: I'm having issues with my water heater. We have hot water for about 5 seconds and then it becomes lukewarm to cold. The bypass valves is in the right position.

Michael Goulding: Great clear video on how to troubleshoot a Atwood water heater. Saved me hundreds of dollars on repairing mine. Just had to replace the ECO sensor, which cost about $13. Thank you so much!

David Coward: Can An Atwood elec./lp water heater be used without LP hookup?

Peter B.: Hi . Do you have a video from the 110v+propane water heater hookup ?

brp0u12: 2000 coachman Atwood LP gas only heater lights burns good but water is not getting hot hardly even warm nice video can you help .

chuck may: my hwt will light but, it has smoked up my camper outside. the light comes on till it lights then it goes off.. it wont Howell when on it seems like it does 1/2 of the gas.i can move the adjuster it does do nothing. help please

Joe Rod: can you please elaborate more around 10 minutes 30 seconds I cannot tell what you are hooking meter to to test gas valves please help. Thank you my hot water heater works on electric and when I turn it to gas it tries to ignite but never lights I have checked propane as well as clean tubes I'm thinking it may be the gas valve and need to check but not sure where you are putting the meter any help would be appreciated thank you

james duncan: no power from wire from circuit board to ECO .

Larry Lawnmower: So what is the fix if you do hear the ignite clicking but you are not getting power to the valve? Is it the circuit board?
Rating:
Atwood water heater not heating, won't light with wiring and diagnostics - Donald McAdams 5 out of 5

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Mike Willems: Ok I think your right about the dirty connection. Today I was messing around with the plug that plugs into the board. I moved it in and out abit and It actually tried to spark. So tonight I'm going to get some electrical cleaner and clean all of the connections. If that doesn't work I'm going to try buying a new plug for it if I can.
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Atwood water heater not heating, won't light with wiring and diagnostics - Donald McAdams