After weeks of use the water heater would not light up . Having a mess around I found if I sorted out the thermostat with the brown wires the heater would fire up and some times work all day after removeing the short but the next time out with the van the heater would not work from cold .From this I decided the fault was in the thermostats so ordered replacements , these came today bit awkward to fit but glad to say seems to work ok now. broke into the old stats and found contacts corroded inside though think this is lack of use.Photos of old stats and new ones fitted.
swampy