Silly question for the day!!
On my last trip I had city water for the first time, or at least the first time I have used it. I could not get it to operate and found I was only using the water from the on-board tank??
Would some one please give me a refresher class.
I have a 2001 U320, 40ft and it has two fill valve switches, one outside at the water/sewer panel and one under the sink. My memory says they have to be off. The tank was not being filled by the city supply and neither was I getting city water at the faucets.
Or put more simply, how do I get city water into the coach??
Speedbird 1.
1. There are no silly questions.
2. It sounds like you understand the system perfectly. With shore water hooked up, it should do one of two things: (with fill valve open) fill the tank, or (with fill valve closed) supply water pressure to faucets. Yours is not doing either.
3. SO, there must be another mystery valve, or a blockage somewhere, preventing shore connection from supplying pressure. Do you employ a filter, screen, or pressure regulator on your hose when you connect to shore water? These devices can plug up and slow or completely block the water flow. However, since your water tank has been filling normally when you open the fill valve, this is
not a likely scenario.
4. I'm (temporarily) stumped. While I ponder, hopefully smarter members will chime in with a brilliant solution. :help:
speedbird,
You should have an anti back feed check valve (government required so it is somewhere) between where your hose comes in the coach and where the feed line ties into the pressure side of your water system. Find this check valve and see if it has failed. If it fails the parts can completely shut down your incoming water.
Pamela & Mike
Second silly question was your water pump turned off when you hooked up to city water?
Doesn't matter. As long as fill valve is closed, you can use the pump
and shore pressure to supply the faucets. This is commonly done to help augment low shore pressure for more satisfying shower performance.
If the shore water pressure was lower than the pump wouldn't it use the tank water?
Good point...you may be right...guess we need to hear the answer to your question from speedbird1.
When you are connected to an external water source the accumulator tank is pressurized by the external source. The pump will not come on until the pressure goes below a certain point.
Brian, look in your water manifold/pump bay below the shelf on the right side. In the space where the pump is on the right side wall there is a ball valve (90° lever). It is the shut off for the city water incoming line. If it is off you will get no filling and no internal city water. It gets turned off when I winterize and not turned on until I give myself a dope slap because I always forget that I shut it off.
I ran into the same condition back awhile ago. It happened after connecting to a high pressure city water supply. The anti-siphon check valve came apart internally creating a complete blockage. There are at least a couple different brand replacement valves available. Be sure what you choose has a brass plug retainer. It can be seen at the discharge end of the valve. Ours failed due to a plastic retainer after a years service.
A quick way to test the check valve is to open the fill hose end and see if water continues to flow out of the hose. If there is water in the fresh water tank and water flows out the valve is shot.
OK Guys,
Thanks for the gathering of the brains that helps my tiny one think straight.
1) The water pump was on and the fill valve shut and I was only using on-board water.
2) Roger, the valve is open.
3) Chuck, I feel it is the pressure regulator on the end of my hose. Reason, I filled OK at home using well water (lo pressure). I feel the pressure at the campground may have been high and shut the incoming off as advertised.
I had forgotten that the pressure regulator may close the fill line off completely if the incoming is too high. Maybe if I had closed the mains tap a bit the pressure would have gone down and all would have been well??
Thanks to all.
Speedbird 1
My high pressure regulator on the hose failed closed once.
Rich