The E18 occurs when there is a draining problem. This may be due to a blocked drain pump or a clog in the system. Try cleaning the drain filter and make sure there are no problems with the drain pump.
Be sure that the outlet, to which the drain hose is connected, is not blocked or clogged. It is advisable to tilt the washing machine toward the pump when draining.
Not unlikely, poor draining has occurred due to a motor overload. If that is the case, switch off the unit and disconnect it from the mains. Remove all load that is still in it. Unjam the agitator, if necessary, and reset the system.