Champstar Posted June 15, 2007 Share Posted June 15, 2007 Hi Having had my new motorhome for almost a year one thing bugs me about the electric loo flush. Sometimes it works wonderfully other hardly a trickle..is this a common problem? At my recent habitation service I pointd this out and the system was checked and found ok but said that it just had to be primed. Excuse me for being stupid what does this actually mean? many thanks from a new user :$ Link to comment Share on other sites More sharing options...
michele Posted June 15, 2007 Share Posted June 15, 2007 I assume it means pressing it to allow the water to flow upwards Someone will put me right soon...Any help for this person guys! ;-) Link to comment Share on other sites More sharing options...
Champstar Posted June 15, 2007 Author Share Posted June 15, 2007 I kinda geussed that but is that just it as even after a good flush an hour later there is just a trickle....I can get it back if i run the bathroom taps for a minute or so. Is this a common occurrence or it a problem that I should be taking care off. Link to comment Share on other sites More sharing options...
michele Posted June 15, 2007 Share Posted June 15, 2007 Come on you lot don't let the forum down help this guy . I dont know enough about it ... can't see why though if you keep pumping it like a boat toilet that it isn't primed and behave itself. Link to comment Share on other sites More sharing options...
Brian Kirby Posted June 15, 2007 Share Posted June 15, 2007 Well, he hasn't said whether the supply to the loo is from its own tank, or from the main tank via his service water pump. If the latter, my guess is that he either hasn't fully expelled the air in his water system when filling; possibly, if he has Truma Combi heater, on the hot side. However, if it is from the main pump, I don't understand the stated need to prime, since the main water pump will be self-priming. An alternative is that the non-return valve on the water system is letting water flow back into the main tank. However, if this is the case, I'd also expect there to be a certain amount of spluttering from the taps when operated. More info required! Link to comment Share on other sites More sharing options...
michele Posted June 15, 2007 Share Posted June 15, 2007 Ok Come on Champstar, help us out ;-) Link to comment Share on other sites More sharing options...
tezza Posted June 15, 2007 Share Posted June 15, 2007 Champstar I have had roughly the same problem for the past 9 months, when I press the flush button all I had was a bump bump bump of the pump desperatley trying to get water to the bowl and then only a trickle appeared, after a while of pressing it got a lot better but then the next time of use it was back to the start. Took it to my dealer and was told "that's normal, or it needs priming, or the pipe is kinked", actually i have just had the toilet solonoid changed and hey presto it works like a good un, only trouble is now it will use a lot more water, still at least it works. My water comes from the main fresh water tank, and my van is an Ace Napoli Tezza Link to comment Share on other sites More sharing options...
Champstar Posted June 15, 2007 Author Share Posted June 15, 2007 The water comes from the main tank and there is no spluttering of taps unless to fill the trauma water boiler...again does this also happen alot..I would think that once it is filled it should fill automatically when running the hot taps...or am I a complete idiot. It was my dream to have a motorhome from a young age and now that we have one it is great but I do feel a little bit stupid asking silly questions. Link to comment Share on other sites More sharing options...
michele Posted June 15, 2007 Share Posted June 15, 2007 Dont worry it's not silly and I you certainly are not the only one to feel stupid... If you don't ask you don't get to know DO YOU. :D Link to comment Share on other sites More sharing options...
spartan3956 Posted June 16, 2007 Share Posted June 16, 2007 I had the same problem if you disconnect the pipe after the non return valve you will see a restrictor in the pipe mine was orange with a small hole in the middle i took it out and the flush was great. Pete Link to comment Share on other sites More sharing options...
Brian Kirby Posted June 16, 2007 Share Posted June 16, 2007 Champstar - 2007-06-15 9:58 PM The water comes from the main tank and there is no spluttering of taps unless to fill the trauma water boiler...again does this also happen alot..I would think that once it is filled it should fill automatically when running the hot taps...or am I a complete idiot. It was my dream to have a motorhome from a young age and now that we have one it is great but I do feel a little bit stupid asking silly questions. I don't think you are adequately purging the air from your Truma. You have to get 12 litres of water into it, and so 12 litres plus of air out! Start with all the cold taps (don't forget the shower and the toilet flush) and run water until the flow is steady and bubble free. Then move on to the hot taps. This can take a while, with quite a bit of spluttering along the way - its that 12 litres of air! (Don't forget to open all the hot taps, including the shower!)Then, when you think you've got it, put the water heating on, and let it heat up fully. Then open the hot taps again, and you'll probably get some more spluttering before the water flow is hot and steady. When you get there, give the cold another squirt to make sure. Then, top up the cold water tank, because you'll have dropped the level a bit, and drain out the waste tank and toilet cassette (you didn't put any chemicals in at this stage, did you?!). Keep the water tank reasonably filled, and try to avoid letting the level drop to the point at which the pump feed is sucking air. After your first day's run you may need to blow out a bit more air that has bubbled around while driving. After that, it should all settle down nicely. Some vans are much easier to purge than others. If, despite all this, you find the air is slowly creeping back, say overnight, then it will almost certainly be the non-return valve that has picked up a bit of loose limescale. If it is incorporated with a submerged pump, you may well have to replace the pump to get rid of the problem. Link to comment Share on other sites More sharing options...
Champstar Posted June 17, 2007 Author Share Posted June 17, 2007 Thanks for your help I will try this next time I am out in the van..definately sounds like my problem. Cheers Link to comment Share on other sites More sharing options...
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