We have had a 774B for a couple of months and all is going well until last week when all the cold water tank was emptied on a frosty night. No problem thought I warm it up, close the valve fill the tank. the only problem is the valve is nowhere to be seen! I have read the hymer manual and the safety valve is mentioned but not where it is. I have looked all around the boiler but cannot find one. Does anyone have any ideas where else to look. I have even looked in the garage but cant see it. The water leaves the van from a narrow pipe up in the rear nearside wheel arch. Any ideas gratefull accepted.
many thanks
Joe
many thanks
Joe