Another bit of the jigsaw! Not familiar with the shower but if it operates the same pump it might be worth disconnecting the shower switch to rule that out.Could it be something to do with the cold water shower switch?
No need to remove but you can remove the fuse and open the tap/taps then drain the tank. Some of us have fitted switches in series with the tap so that the tap can be left “switched on” with the tap valve open to allow the system to be drained and safe from freezing. I also fitted a relay to reduce the chance of burnt out contacts in the tap.All sorted. Problem with the shower switch. Don’t know why I didn’t think of that before!!! Thank you for the moral support and wise words ArunAlec. One final question - to preserve the life of the pump would you recommend removing it over winter?
The VW California Club is the worlds largest resource for all owners and enthusiasts of VW California campervans.