Check for a rebuild kit for the water pump and find out if the internal check valve is a user serviceable part some art some are not.
Rv hot water bypass valve leaking.
Go whole hog and replace the pump itself.
To do this you need to add some air into the water heater because if there is no air in the water heater to compress when the water gets hot the valve will leak.
The lever of the valve should point in the direction that you want the water to flow.
If your rv has a bypass valve these two pipes will be connected directly to each other using a third pipe.
Before any of that of course the first thing i do is after draining the water from the system and water heater is put the water heater in the bypass mode.
Don t open the drain plug on the water heater while it s hot when you re winterizing or sanitizing the water system.
You may or may not already have a hot water heater bypass valve but it is important to make sure if you do or not.
Turn it off and let it cool down before you open it.
Install hot water heater bypass valve.
I ve run out of things to check.
You need to winterize the water heater also.
Troubleshooting problems with your.
Drain and close the bypass valve or you ll need up to 10 more gallons of antifreeze.
Flushing the water heater storage holding tank several times.
Hot water pressure very lot water is hot.
If a leak on your water heater is suspected after doing all the steps above the power and water valve must be switched off.
Check amazon or rv water filter store for options.
Nothing like taking cold showers.
After putting it in the bypass mode i noticed that the pump pulled all of the antifreeze out of the bottle before shutting off so i checked to see if any of the faucets were in the open.
Cold water comes in at the bottom and hot water comes out of the top of the heater.
Add your own 1 way check valve to the water line on the inlet side of the pump.
The rv water system due to check values in the water system is a sealed system unlike a home water system that is open.