member Lizndel, four green stars [Online] Posted 13 August 2012 by Lizndel Quote | Report Hi Guys,I am the proud and first time owner of a caravan, Abbey 418GTS. It has a Truma water heater. I tried to get it started and did all that the instructions said. It does not seem to work on the Electric and so it has been suggested the element might need replacing. I also tried it on gas and that didn't work but found out the bottle was empty. Have replaced that and have a green light and so hopeflluy in next 20 mins will have hot water. Question: Any idea how much it will cost to replace the element. Thanks Post liked!