Foamed up and flooded the base. (Under the cavity). If you get the E4 again I'd suggest tipping it backwards about 45 degrees to drain the base. Put a large towel on the floor, lots of water!! Lying it on it's side can upset the water management system.
If you're using 3 in 1 tablets do not put rinse aid into the machine as this can cause overfoaming. Don't put soda crystals, bleach or washing up liquid in it as this also causes overfoaming.
Unplug your appliance before working on it.
Lloyd, January 2007