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Old 06-24-2016, 02:21 PM   #41
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Old 06-24-2016, 02:30 PM   #42
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City water pressure is too low. That is reason it was suggested to use FWT and pump since Tankless hot water doesn't work on less than 2.5 gpm.
Understood, but if city water pressure is lower than the pump pressure the underlying issue is why then does water flow out the hot faucet on city water and not pump? I believe if you discover the reason, you will also fix your hot water problems.

If it takes 2.5 GPM to make HOT water, I suppose the possibility exists it also takes 2.5 GPM to allow flow of any kind through the water heater.

Again, blocked valve, incorrect valve position, kinked line, defective 2.5 GPM flow valve.

Any idea what the water pressure is on city water and what the pressure of the system is when on pump?
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Old 06-24-2016, 02:42 PM   #43
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Looking at the pic, it appears your cold water inlet valve to the water heater is in the off position.
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Old 06-24-2016, 02:44 PM   #44
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Fwt and pump have about double the pressure of city water. Neither is blasting by any means.

This is on my Goshen list.

Just checked outside shower and inside shower. Same.....plenty of pressure on cold....zero flow on hot.
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Old 06-24-2016, 02:46 PM   #45
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Pulled panel. Cannot find any kinked lines.

Probably valve position but it escapes me what to change from settings in picture above.
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Old 06-24-2016, 02:57 PM   #46
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To me... this is the valve that doesn't make sense closed.
Under normal plumbing circumstance of lines being plumbed the way they are in your photo, that valve should be open, not closed. (Parallel to the plumbing line)

It's also hard to see the position of the other valve (bypass) in your photo as the valve handle is directly inline with whatever the black thing is on the wall behind it. It should be closed. (Perpendicular to the plumbing line)
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Old 06-24-2016, 03:01 PM   #47
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To me... this is the valve that doesn't make sense closed.
Under normal plumbing circumstance of lines being plumbed the way they are in your photo, that valve should be open, not closed. (Parallel to the plumbing line)

It's also hard to see the position of the other valve (bypass) in your photo as the valve handle is directly inline with whatever the black thing is on the wall behind it. It should be closed. (Perpendicular to the plumbing line)
I agree with 5picker, this seems to be the cold water inlet line to your water heater perhaps, and it should be open (it's currently closed)

Although a little different, this thread explains the valve positions, where you should get the gist, if this is your cold water inlet line.

NO (OR MINIMAL) HOT WATER (Please read first)
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Old 06-24-2016, 03:08 PM   #48
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wmtire and 5picker...glad you agree with what I described in post 43. Indeed that is the cold water inlet valve to the water heater.
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Old 06-24-2016, 03:09 PM   #49
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To me... this is the valve that doesn't make sense closed.
Under normal plumbing circumstance of lines being plumbed the way they are in your photo, that valve should be open, not closed. (Parallel to the plumbing line)

It's also hard to see the position of the other valve (bypass) in your photo as the valve handle is directly inline with whatever the black thing is on the wall behind it. It should be closed. (Perpendicular to the plumbing line)
X2. Water inlet in the photo is closed. You should have no water to the water heater at all unless the valve is bad or only cracked open.
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Old 06-24-2016, 03:10 PM   #50
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5P, that fixed this issue...now have water coming out. And it's hot.

And it must be FWT water because city water is off at campground faucet.

But that makes no sense to me since i thought that valve was city water on.

And it's hot.

But....dsi/flt kept hitting fault that way. But now seems to be staying on.

FWT already lost 1/3 but I can fill it.

I NEED to figure out why turning on cold city water intake fixed this.


Now. Never ran on FWT before. Two questions:

Does icemaker work ok on FWT? Leave it on?

And...if I turn campground faucet back on to fill fresh water tank, will it overflow or do I need to monitor sensors and turn off campground faucet when it shows full?
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