Hi Otherclive,
Thanks for responding. It's a 1993 Abi celebration 450. I have photographed the pump and attaching it below. The pump works as it sucks up all the water from a water source. (I will look into the Aquaroll container) But nothing comes out of the taps. Any idea why? Thank you in advance.
It doesn’t have to be Aquaroll 20 litre cheap drinking container would be okay. If the van has a water heater that tends to fill first, before the water system fills up.
Firstly check you are getting no leakage under the van where there should be a drain outlet. The valve on this could be open. To obviate against air pockets on start up I used to sink the pump into the water container then connect the hose from the pump to the caravan inlet.
Secondly if there are no leaks start to fill with all taps closed then open the most remote cold ones first. Then the hot taps. Often toilet sink and shower. You should hear air then water. Close them and open kitchen sink tap cold. Then hot. Hot (it will be cold in temperature ) won’t come through from the water heater till it’s full.
Then repeat until water comes from the cold and hot taps.
That’s how I did it but others will have their own approach.