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Old 04-20-2016, 08:47 PM   #1
wls
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No hot water

I hooked the water up to the rig, got all the rv antifreeze out, thru the cold and hot lines. So I flipped the switch on (suburban on-demand) and no hot water, gas turned on, have gas back to the cook stove so I figured it made it to the water heater. When I turned the switch to the on position, very faint light came on for a millisecond. Let the water run for quite some time, and numerous times. No sound of trying to light, no flashing light, talking about the little red light by the on/off switch. Oh I have a good flow of water coming out of the faucets. Any ideas? Thanks
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Old 04-20-2016, 08:51 PM   #2
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You still have the valves in bypass.
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Old 04-20-2016, 09:10 PM   #3
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Here is how I got them.
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Old 04-20-2016, 09:15 PM   #4
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sorry for the side view, but if I turn the one on the blue and red in the center of pic, inline, (they go to the water heater) it will dump the water thru a hose that dumps to the ground. I have to get the pics off my phone, but theres 2 lines that hang below the heater.
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Old 04-20-2016, 09:18 PM   #5
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Here is the 2 hoses hanging, and where they come out of the heater
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Old 04-20-2016, 10:01 PM   #6
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No hot water

How do you know the tank is full?

Did you check the reset buttons on the water heater.


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Old 04-20-2016, 10:23 PM   #7
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Quote:
Originally Posted by wls View Post
Here is how I got them.
Those 3 valves appear incorrect for non by-pass. There is a pictorial at the bottom of your photo showing manifold bypass valve positions. Have you positioned the valves to the correct position for non by-pass?
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Old 04-20-2016, 10:36 PM   #8
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Those 3 valves are incorrect for non-winterization. They are in by-pass.


And this is why I say to open pressure relief valve in order to fill water heater tank, turning on a hot water tap tells you nothing, as you'll still get water out of it if bypass valves are incorrect or forgotten about.
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Old 04-20-2016, 10:41 PM   #9
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If you are in bypass mode then you never filled the hot water tank. Now if you tried lighting it, you may have burned out the heater element.
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Old 04-20-2016, 10:57 PM   #10
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The OP said he had an ON DEMAND water heater but it appears he may not have one. I recently posted on another one of this OP's questions and he indicated at that time also he had an on demand system.
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