We have just bought a brand new dishwasher - BEKO DWD4311 - it worked OK for a couple of weeks but now it is mysteriously filling with water when not in use. We purchased a new washing machine at same time - shares the same outlet and that is working fine. We don't think that is water coming back in after a wash as its all good clean water and we don't think its the shared trap as both appliances were not running at the same time when it started happening. Obviously its under guarantee so we can call service but has anyone any ideas what might be causing it... before I call them out and find out its some user error and I get charged for abortive callout. Many thanks in advance!