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Old 04-21-2014, 07:07 PM   #1
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Mystery leak

Everytime I lite the hot water heater I get a small leak from somewhere that goes away. Maybe a quarter cup of water on the floor. Just wipe it up and it wont come back until I turn off the hwh and then lite it again. Oddiest thing. Has anyone else have this happen?

I am worried I got a bigger problem down the road.
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Old 04-21-2014, 07:18 PM   #2
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Outside under the water heater, or inside the RV somewhere ?
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Old 04-21-2014, 07:29 PM   #3
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Need more informaion. As Skip said, inside or out, what kind of water heater? Age might help as well.
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Old 04-21-2014, 07:41 PM   #4
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2014 Gulfstream 19bhc. The wh is under a bunk bed. The water trails from the corner of that bunk to the middle of the floor.

I usually lite it in the afternoon to do some diner dishes and take a shower. Then I shut it off until the next evening. There isn't a problem when it is heating back up, after the shower or dishes. Only when it is first lite and heating up after it has been sitting overnight.
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Old 04-21-2014, 07:46 PM   #5
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Sounds like a fitting leak under expansion, once the fitting is up to temp , it seals up.
No dealer close by ? Warranty issue ?

EDIT: Is the heater in an outside location near the bunk?

OK, on a re-read of your post I see you said that.
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Old 04-21-2014, 07:48 PM   #6
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I was thinking the pressure relief valve, but not knowing where the leak is, it's anybodies guess.
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Old 04-21-2014, 08:03 PM   #7
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I think is could be condensation. Probably running out of the fire chamber and on the floor. This happens when you have cold water and high humidity. Don't be so tight and just leave the heater on. They only come on a few times a day. This may cure your problem. Then it may only make water on the first heat up.
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Old 04-21-2014, 11:05 PM   #8
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Pull the cover off, pull up a chair then light the hw tank... Could be the pressure relief valve is weeping (normal) but not draining properly, or just a loose fitting...
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Old 04-23-2014, 06:58 AM   #9
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I lite it last night and went inside and waited for the water. Nothing. I walked around outside to see if it drained somewhere else. Nothing.


I really love the problems that cost nothing and fix themselves. Now if I had a wife that worked like that.

I took the advice and left the heater running now. I figured I must have had a loose connector somewhere from the cold winter and the heat was resealing it. Really have no idea.
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Old 04-23-2014, 12:28 PM   #10
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You could wrap the exposed water pipe and fittings in paper towel, and check regularly for wet towel ; narrow down the exact section that way.
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Old 04-23-2014, 12:36 PM   #11
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I'm guessing pressure relief valve. I had a similar problem with ours. I used a socket extension and placed it on the face of the valve. Tapped it with a hammer and the leak stopped. Must have re-seated the seal in the valve.
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Old 04-23-2014, 04:47 PM   #12
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Quote:
Originally Posted by Steve N Sal View Post
I'm guessing pressure relief valve. I had a similar problem with ours. I used a socket extension and placed it on the face of the valve. Tapped it with a hammer and the leak stopped. Must have re-seated the seal in the valve.
Flipping the lever on the valve will normally accomplish the same thing and what is for, to re-seat and flush the valve seat.
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