As part of the restoration / repair of the interior the water heating system will need to be removed in order that full access may then be made to any rotten wood frame / flooring.
The picture above details the inside of the wardrobe where the water inlet comes through the side panel of the caravan. Again, picture is for reference once i get to replace all the pipework!
The picture above is of the water heater controller which is located / fixed to the outside panel of the wardrobe.
Elddis Whirlwind XL Restoration 