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1998 U270 Fill problem

I am having trouble filling my water tank on my 1998 U270.

Here is the situation:

I had a leak on a fitting on the hot water heater. I removed the water tank and replaced the fitting.

I just put tank back in and tried to fill it, but it will not fill.

The fill valve under the sink is open. I have tried it both ways to be safe.

My water pump will run if I try it.

The house battery is dead, but I am plugged into shore power.

I do not think this model has an electric fill valve, I have looked , but can't find one.

Any advice?

Re: 1998 U270 Fill problem

Reply #1 –
Look under the lavatory, there is a ball valve you have to turn 90 degrees to fill tank.

Re: 1998 U270 Fill problem

Reply #2 –
Yes, I tried that and nothing flows in the tank.

I just blew some air in the fill port and it sounds like that is making it into the tank.

Re: 1998 U270 Fill problem

Reply #3 –
Did you give it time to fill the water heater?

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: 1998 U270 Fill problem

Reply #4 –
Yes, the hot water heater filled all the way.

Re: 1998 U270 Fill problem

Reply #5 –
It doesn't help you today but consider a direct fill for your coach. That takes the Scenic water route out of the equation.  Fills faster and the DW in our case can clean,shower or whatever with the water while the tank fills.

  I also took the water restriction fitting off which can leak.  Or I suppose it could plug.  Really small Orifice in that thing.
Robert and Susan
 1995 36' 280 WTBI 8.3 3060r
 1200 watts on the roof, 720 Ah of lithium's
 Build # 4637. Motorcade # 17599
        FMCA  # 451505
        18  Wrangler JLUR

Re: 1998 U270 Fill problem

Reply #6 –
Fill ball valve in bath cabinet has two flexible hoses. Could you have crimped or smashed one of them.

We also removed these hoses and put in a direct fill to top of freshwater tank.  Also, now easier to add little bleach to each water fill.

Re: 1998 U270 Fill problem

Reply #7 –
I had the check valve stop letting water by so I couldn't fill the tank.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: 1998 U270 Fill problem

Reply #8 –
Where is the check valve located?

Re: 1998 U270 Fill problem

Reply #9 –
Where you connect the hose in the wet bay.

But, if that is the problem, easy to diagnose.  Turn off water pump.  Connect hose and turn on shore water (yes, with pressure reducer as always).  If you have regular water pressure at the faucets, water is getting in through the check valve.

The check valve's job is to allow shore water in, but not allow water out when no shore water.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: 1998 U270 Fill problem

Reply #10 –
Ok, then my check valve should be good.

Re: 1998 U270 Fill problem

Reply #11 –
Is there some damage to the pump that would not allow it to fill?

Re: 1998 U270 Fill problem

Reply #12 –
In simple terms, when you open the manual fil valve it by passes the water pump.  Likewise if you open the fill valve and run the pump you will never have pressure to cut off the water pump when you are drawing from the on-board water tank.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: 1998 U270 Fill problem

Reply #13 –
Quote from: neal.sprouse –
I removed the water tank and replaced the fitting.
I just put tank back in and tried to fill it, but it will not fill.
When a new system "problem" suddenly appears, the first place to look is where you last worked on the system.

When you put the tank back in, are you SURE that all water lines were reconnected to the tank properly?  Perhaps you forgot to open one of the valves on the lines going to the tank?  I'm not familiar with the plumbing on your '98 model coach, but on our coach each of the water lines connected to the tank has a separate shutoff valve.

Go back and recheck your installation work to see if you missed anything.

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: 1998 U270 Fill problem

Reply #14 –
What Chuck said. Why? 'Cause it has happened to this dumbass. I thought I put"it" back right.....WRONG!!!!
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: 1998 U270 Fill problem

Reply #15 –
I plan to recheck everything again later today.

There is no slack on the tubing heading into the tank based on the pump connections so I don't think it possible to hook them up wrong. But you never know.

 

Re: 1998 U270 Fill problem

Reply #16 –
I figured it out.

The fill circuit is plumbed in with the shower cold side.

I had turned that off at the manifold so as not to rewinterize everything.

For future reference for the next person who searches:

My 1998 U270 had the water tank fill flow off the cold side of the shower line on the manifold.

That means if the cold side of the shower line is turned off at the manifold, the water tank will not fill.