Community Forums

brobox · 06-27-2021, 04:50 PM

Quote:

Originally Posted by Nowabeachbum

I had this same problem last month. Your problem is the pump valve has failed. You can replace your water pump or just rebuild your check valve. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Thanks Gary, I learned something new. Does the 4008 fit the 4048? I want to bookmark it.

Nowabeachbum · 06-27-2021, 05:40 PM

Quote:

Originally Posted by brobox

Thanks Gary, I learned something new. Does the 4008 fit the 4048? I want to bookmark it.

Same check valve

seeg · 06-27-2021, 08:55 PM

Well, I installed the check valve and still the fresh water tank filled to overflowing then I couldn’t get the pump to work so DW had about enough. She called our service advisor here at NIRVC in Las Vegas and he was at the coach within 10 minutes on a Sunday. While this may not apply to your coach unless you have a shower miser or whatever it’s called he stated that if the valve was left open (pointed down) it would backfill the tank through the aqua hot. He flipped the valve up and the city connection worked as it should. If you have shower miser make sure it’s turned off. Page 129 of the Cornerstone manual talks about filling the fresh water tank using the shower miser valve. I missed it and I’m a manual reader.

rgebbie · 06-28-2021, 08:03 AM

had the valve out and checked that the level was working and not stripped.
also, the pump does work fine when i tried it to make sure it wasn't the problem. would the pressure check valve cause this filling issue, but still pump water?

Rich

Nowabeachbum · 06-28-2021, 09:11 AM

Quote:

Originally Posted by rgebbie

had the valve out and checked that the level was working and not stripped.

also, the pump does work fine when i tried it to make sure it wasn't the problem. would the pressure check valve cause this filling issue, but still pump water?

Rich

The pump will operate perfectly even when the check valve leaks which is why I didn’t replace the pump and just rebuilt the check valve. I rebuilt the valve while it was still connected. Super easy

HarleySG · 06-29-2021, 10:03 AM

Quote:

Originally Posted by rgebbie

My issue is my tank won't fill period. i pulled the city water /tank water switch today, thinking it was the problem. there is nothing wrong with it, however, with the valve in the correct position, pump on or off, no water goes into the fresh water tank. i have put water in the tank on time in the spring when i de-winterized it. all was fine. then i used the water while flushing the system from the winter, so I tried to re-fill the tank and it won't re-fill.
i have read all the posts here about filling problems, seems to me most are about overfilling even when the valve is on city water.
read the "shark bite" piece, but i don't see how that will help.
looking for some help please.

all the best

rich

Do you have a filter or pressure gauge at the external water source? If so remove them both and try it again. I had a filter inline with the campground water source that once removed, water flowed better into the tank (clogged filter). It was so slow you could hardly tell water was entering the tank.

Cheers!

rgebbie · 07-02-2021, 05:25 AM

So I figured it out today. first I replaced the water pump, that didn't work. Then I remembered I put a new water filter in the big canister, and thought maybe the filter is the wrong filter, so I removed it, and bang! The tank started filling.
Thank you to everyone for your input

Rich