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Old 05-07-2018, 11:39 AM   #1
Senior Member
Winnebago Owners Club
Join Date: Aug 2017
Location: Middle Arizona
Posts: 274
Water Heater Leak?

Today I have noticed some water dripping from the external door of my water heater. Upon opening it, there is a puddle of water in the "lip" that extends below the water heater unit to the coach wall.

The drain plug appears wet at the bottom but I cannot see the water coming from there.

When the water heater is off, there is no water. Only when on and water running through the system.

I am sure someone has seen this and has the solution for it. Nothing is new, and this forum is the best on helping others to fix stuff they have already fixed. I cannot say enough how this forum has supported me in my RV full time experiment.
Thanks in advance.
Turn the Key and Smile
2015 Winnebago Vista 31KE
Tuned, Swayed, Sumo'd
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Old 05-07-2018, 11:56 AM   #2
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The way to check is to wipe all of the water off, and use talcum powder, (I have in a pinch used a dry deodorant). and see where it seeps out. The other possibility is to use compressed air and soapy water to bubble test.
Use new Teflon tape and reseal the plug first.
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Old 05-07-2018, 02:30 PM   #3
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Atwood uses a 1/2" NYLON Plug. Has tapered threads so it tightens when installed
Use a 6 point socket and tighten it just a little bit........head can snap off on plugs that are OLD. 15/16" or 7/8" socket---depends on vintage/vendor
NEW ones come 2 to pack

Suburban uses a anode rod/drain plug. Tapered threads also.....teflon tape OK to help seal
3/4" drain .....6 point socket 1 1/6"

Now if T&P Relief Valve is dripping (weeping) it is most likely due to loss of Air Pocket.
Air Pocket is by design in top of tanks
Air can be compressed...water can NOT
Water 'Swells' when heated.......no air pocket to control pressure increases the T&P will leak

Over time Air Pocket can be absorbed into the water

*Turn water supply OFF
*Open faucet hotside to relive pressure---leave open
*Pop T&P Open via lever.....let it Snap Closed WHEN water stops running out
*Close faucet
*Open water supply

**CAUTION: When popping T&P Open water may be HOT

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Old 05-08-2018, 10:37 AM   #4
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Winnebago Owners Club
Join Date: Aug 2017
Location: Middle Arizona
Posts: 274
Fixed or Repaired Post

So now i have a post for "what have you fixed or repaired lately".

Thanks for the inputs... this will be my task for later today... when the sun is on the other side of the bus. In Arizona you do things on the side without the sun!

I will revert when I get through this one.

Again, this place is the best !!!!!!
Turn the Key and Smile
2015 Winnebago Vista 31KE
Tuned, Swayed, Sumo'd
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heat, heater, leak, water, water heater

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