Couple of fuse box locations one next to the battery with two wing but style screws onto and one passenger side of the gear selector trim it’s a panel under the cigar lighter cubby hole, hate to be pessimistic but don’t think you’ll be lucky enough for it to be a fuse, if you open the bonnet and start the van pop the air con on and see if the cooling fan starts to run, sometimes when gas pressure is low the fan will initially run at least tells you you have a electrical circuit, by all means check all the fuses but hard to diagnose without checking the gas pressures or without looking on vcds for potential faults,