The Dream Sleeper Mini campervan and Beta 2S Self-Contained Campervan come with a sink, tap and thus have running water (cold). If you think the tap doesn't work - even though you filled the tank, here are the steps to check and/or fix the issue.

If your freshwater tank is full but you're having trouble getting water from the tap, there may be an air bubble in the waterline. To resolve this, place your hand over the end of the tap where the water usually flows out, then use the tap as if you're pumping water. Repeat this a few times while keeping your hand over the tap opening. This should help release the air bubble.

Once done, remove your hand and try the tap again. You should see the water flowing normally, and the issue will be resolved.

Specific tips for the Beta 2S Self-Contained Campervan... If the electric pump of the water tap isn't working, please check if you have re-connected the electric pump's cable when you refilled the freshwater tank.