Hello, glad to find this site. We currently have a 2012 Cyclone 4014 and I am having a hard time figuring out a water problem. We are pretty much full timers working on the road and bought this unit in June of last year. After dealer checked all the systems and we got to where we were headed and set up I noticed the fresh water drain was open, so I shut it. A week later water at 10 at night someone wakes me to tell me that water is ROLLING out from under the trailer, so much so that the park owners were freaking out and even spent the next day diagnosing the problem while I was at work. He told me the 4 way valve was leaking letting water go to the holding tank, so he had capped it off, and I could no longer use the holding tank until the 4 way was fixed. I had let it be since we could run on city water until 2 weeks ago I decided I was going to fix a few things on the trailer. Called Anderson Brass to ask them about this 4 way, super nice folks BTW, told me they had NEVER had this 4 way leak and sent me a brand new one and asked me to send the old one in for analysis. Put the new 4 way on and no problems, until Friday. My heated water hose was splitting and trying to leak. Nice warm day I'll fill my holding tank and run on the pump. Switched the new 4 way to holding tank and it immediately started pouring out of the underbelly so switched to NORMAL on 4 way valve to run the pump. Everything worked great until we woke up the next morning to find water flooding out into the living room/kitchen and standing water in basement. Switched back to city got a different heated hose run for 3 hours last night before a knock on the door again telling me water was ROLLING out again. I'm ready to tear my hair out. Shut water off last night to cap off the holding tank side of 4 way valve like we did the first time and now my hose is froze and we have NO water. Sorry needed to vent a little. I have read about the water pump problems on here. If the check valve is letting water back into my holding tank is it going back thru the 4 way valve? If not why does capping off the holding tank side of 4 way valve keep the ROLLING water from happening? I'm going to call a service place this week to come out and fix it and I'd like to know which pump to switch to and where to put check valves to no longer have this problem. Thanks, Kevin