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Ramster · 09-27-2016, 07:15 PM

I have good pressure on the cold side all over. No leak on tank

BFlinn181 · 09-27-2016, 07:22 PM

Quote:

Originally Posted by Ramster

I have good pressure on the cold side all over. No leak on tank

If this is the case, then that pressure should flow into the tank. It's not, or you'd get water coming out of the T/P relief valve. Take the 'cold in' fitting off the tank and make sure water flow is strong when not hooked to the tank. You most likely have a one way valve preventing back flow into the cold water line that is blocked up. This clogged valve may be preventing water from entering the tank at an adequate flow.

Ramster · 09-27-2016, 07:56 PM

Quote:

Originally Posted by BFlinn181

If this is the case, then that pressure should flow i.ento the tank. It's not, or you'd get water coming out of the T/P relief valve. Take the 'cold in' fitting off the tank and make sure water flow is strong when not hooked to the tank. You most likely have a one way valve preventing back flow into the cold water line that is blocked up. This clogged valve may be preventing water from entering the tank at an adequate flow.

Thanks for getting back soon, the coach does not have a check valve on the cold side. I will do as you say when I take off the cold line in it's the bottom one for mine. Should I put on cold or hot water? Hot I think.

Does it work this way... that when you turn hot water in RV it sends the cold water to the hot water tank replacing the water you are using?

I'll look to see how much water is going into tank by taking off line thanks.

FaithBowls · 09-27-2016, 08:04 PM

Yes it should automatically fill if it's got enough pressure.

BFlinn181 · 09-27-2016, 08:04 PM

The tank is nothing more than a 'wide spot' in the hose connecting the water pump to the hot water faucet. Open the faucet and water gets pushed by the pump through the hose, through the 'wide spot' (water heater tank) and out the faucet. Something is blocking the water flow in the above scenario, either a closed valve, (which you say you've checked) or a blockage in the line. By removing the cold inlet connection, you're checking that water is flowing at least that far.

Some folks report hot water issues when both hot and cold valves have been left open, like at an outside shower, and the shower head shut off closed. With both valves open, water can 'bypass' the rest of the system and flow from one side to the other without pressurizing the rest of the system.

FaithBowls · 09-27-2016, 10:09 PM

Good explanation BFlinn

Old-Biscuit · 09-28-2016, 12:13 AM

Answer one question and you will clear up a lot of confusion

With water supply ON........does water flow out of T&P Relief Valve???

Simple question......but answer will be very enlightening

IF YES ......water flows out then COLD inlet to water heater WORKS and CHECK VALVE in HOT out is BAD. Remove it/replace it/verify it is in correctly

IF NO......then COLD inlet is problem

SO YES or NO???

Ramster · 09-28-2016, 09:27 AM

the fix was this...After you guys helped me and narrowed it down to water not going to the tank, I had a feeling why, I live on a hill and I could not use the slide out to get to the lines they have wedged in between the wall and the slide out. I thought that was it. I just had to drive to a level spot and open the slide out and hot water came out right away, the line was pinched when I last closed the living room slide out. Well thanks guys for all the help. You were right the water was not going to tank.