Dometic RV Water Heater Operation and Maintenance

[@JohnJohnson-zz8re]

Great no nonsense tips. Thank you!

[@GreatAmericanRV]

Very welcome thanks for the feedback

[@owlpath4280]

Great overview of a Dometic water heater!

[@GreatAmericanRV]

Thank you for watching, hit that subscribe and follow for more! -Todd

[@lindanarumit4013]

I’m a newbie and you answered my questions! Thank you!

[@GreatAmericanRV]

That’s exactly what our goal is!! Glad we could help, thanks for the feedback!! -Todd

[@USCAVHOOAH]

What do you do when there is too much flame? I have blue flame but it's rolling out of the tube and melting the coating on the wires above the tube? Could it be too much gas going to it? If so, how do I adjust that?

[@GreatAmericanRV]

More than likely you need to check the burner tube. It is a U-shape from where your flame is and out to the grill on the top. It could have a wasps next, spider web, etc built up in there. Run a coat hanger and compressed air through there. The gas is building up and not flowing properly through the exhaust. -Todd.

[@wannabefulltimers]

Nicely explained. Thank you.

[@thehobbyist533]

Hey. This is great info. Thank you. I have a problem with mine that you almost got to but not quite. My water heater heats up with either/both gas and electric and gets plenty hot, but then it fully shuts off and stops heating altogether, and it gives me an error on my computer panel that just says, "check water heater." I assume this is a thermostat problem, but I'm not sure where to go with it, and unfortunately I'm living in an area with no RV repair people. Can you provide any insight or direction?

[@GreatAmericanRV]

Can you get the model number off of the unit itself? From there I'll see what help we can be. -Todd

[@ne8r]

I moved the thermal fuse to the right after having the fuse open on the first use.

[@sharonnah32]

Great info .... The dealership did not give any info on water heater ops Thanks so much!!

[@GreatAmericanRV]

Very welcome!! Thanks for the comment! Hope you subscribed so you don't miss the next video!! -Todd

[@sharonnah32]

@@GreatAmericanRV I sure did subscribe!

[@GreatAmericanRV]

@@sharonnah32 awesome!!!!!!!

[@TheGbab]

I have the Dometic WH-6GEA hot water tank in my rv. The AC cord is just hanging loose. I would like to use electric when I have full hookups, but I'm not sure how to connect the AC. Can you offer any advice please? PS it works fine on propane.

[@GreatAmericanRV]

I would a bit more info. Where are wires located and what color are they? -Todd

[@jimmurpby2208]

What’s the size for the drain plug normal standard use to be 15/16 but the new Domatic heater is bigger drain plug .

[@GreatAmericanRV]

@@jimmurpby2208 the newer ones that have the white cap on the tank 1 1/16”. -Todd

[@jimmurpby2208]

@@GreatAmericanRV wouldn’t that be smaller ?than the 15/16

[@GreatAmericanRV]

@@jimmurpby2208 one and one sixteenth inches. 1 1/16”. That’s bigger.

[@DavidWeddle-m1m]

How can the water temperature be adjusted DOWN?

[@GreatAmericanRV]

@@DavidWeddle-m1m these are not adjustable. Only tankless water heaters. -Todd

[@mangekyou809]

Hello, I have a question "I installed one of this in my camper" is it necessary to connect gas or just the electricity cable?

[@GreatAmericanRV]

You can do just electric if you wish. Just make sure there is no open gas lines on your unit. You would want to cap anything existing. - Todd

[@lutkedog1]

Can i use Vinegar soak to clean the scale from a Aluminum Tank?

[@GreatAmericanRV]

I would suggest staying away from vinegar. The acid could harm the aluminum causing corrosion. Best practice is to just run water through the system with the plug out and purchase a flush rod to stick in the hole to break up any scale. Dometic recommends water only, no chemicals and to perform on a regular basis to avoid buildup. - Todd

[@stevenyara183]

Can somebody tell me the part number for that circuit board

[@GreatAmericanRV]

@@stevenyara183 sure can, can you have the model number for your water heater? It’s going to be on the tag inside the door. I would need that to make sure it’s the right board for your unit. -Todd

[@Rod-db8tt]

Ours runs on gas for a few minutes then slowly dies and flames out. Like it's running out of oxygen. It runs fine if we leave the door open? No issues electric mode.

[@GreatAmericanRV]

When it is running, is it strong? Does it resemble a jet burner blowing through the exhaust tube? -Todd

[@Rod-db8tt]

​@@GreatAmericanRVdoesn't seem strong with intermittent sputtering with door closed. With door open it runs really strong but flame is more yellow than blue.

[@GreatAmericanRV]

@@Rod-db8tt Ok, I would start with the mixture tube that comes right after the gas valve and flows into the combustion chamber. Make sure your system is off first, then run a pipe cleaner or small brush, anything you can fit in that tube and run it around in that 90 degree tube. You would be surprised that even the smallest spider web can cause issues. While you are at it do the same thing to the combustion tube. This one is a little more difficult but try to run something through there and clean it as best you can. One of these two things should take care of it. If not it could be a faulty gas valve (unlikely) or you could have pressure issues coming from your regulator. Hope this does the trick, let me know!! -Todd

[@Rod-db8tt]

​​@@GreatAmericanRVThanks for reply. Ya pretty much done all that. Had gas tube out all clean. Ran my little borescope through exhaust tube and all clear. I eventually bought a new door and did the 3" hole mod with stainless steel vent and screening which did fix it, however it still flamed out once since mod which was highly disappointing. One post on a forum made sense to me that propane exhaust byproduct is heavier than air and snuffing out flame. I just recently researched this issue again to see if any updates from Dometic as I think it is a design flaw.

[@GreatAmericanRV]

@@Rod-db8tt I haven't seen anything on that, thanks for mentioning. Are you having any issues with flow on other LP appliances?

[@bah5310]

Do those have a sacrificial rod in them?

[@GreatAmericanRV]

They do not. Dometic and Atwood build there tanks out aluminum. Therefore they are not necessary according to Dometic.

[@Jturnb]

This was my question also! My element is 3 years old. I took it out and cleaned it. It was covered in stuff