Good afternoon everyone. We have a Hymer Blue Evolution (2021). Whenever we turn on the taps, there is a short delay before water starts to come out from underneath the van. I read through the post from 5 years ago about one of the valves being open and was hopeful. Unfortunately they are all closed. The water is coming out along the nearside of the van. There is a metal gutter with rubber plugs all along the side and the water is coming from there.
I have checked the area around the boiler and there is no sign of water leakage from there. Nor from the area by the two drain valves. I have also checked the shower head tap is connected properly and no water is coming from there. When I open the two drain valves water comes from a different place. The same is true when I open the fresh water tank drain. There is no water in the toilet cassette compartment either.
Does anyone have any suggestions as to what I can check next?