Hi, just prepping for the off. Put some water in for travelling as we're not going too far so not too concerned about weight. Filled hot water heater, Truma Ultrastore,switched it on. Again if we stopped we would have hot/warm water to wash hands. It has tripped the main RCD and keeps doing so. I have checked that there was water in there and there was . Everything else works. Any suggestions?
Thanks
Thanks