madmandy wrote: I have filled the water tank but when I flick the switch by the sink nothing? I think the battery is ok when the engines running the fridge goes cold when its on the battery setting
Just popped in to say that the fridge runs off the main battery and the water pump runs off the leisure battery, so the fridge going cold does not actually prove anything re the water pump.
When we had a LeisureDrive it had a gold coloured control panel (the "Zig" panel) and this had a switch and a fuse especially for the water pump. Does yours have this panel ? If so the fault could be there. (switch or fuse).
madmandy wrote: how do you check to see if the battery is fully functional
You get a cheap multimeter (Maplins etc at around £10). You locate your leisure battery and measure it's DC voltage. At rest it should be between 12.6 Volts and 12.9 Volts. To check the charging circuit, fire up the engine, rev it up a bit, let it tick over for 5 minutes and then, with the engine still running, measure the leisure battery voltage again. It should read between 13.6 to 14 Volts if the charging circuit is working.
As said ^^^, the actual pump is in the cupboard on the floor.