Error messages on a EuroTech EDW154E dishwasher??

Eurotech Dishwashers are notorious for the E1 and E4 faults. The problem is with the solenoid they use for filling the dishwasher. The problem is something called the "Venturi Effect". The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe. The fluid velocity must increase through the constriction to satisfy the equation of continuity. while its pressure must decrease due to conservation of energy. The gain in kinetic energy is balanced by a drop in pressure or a pressure gradient force. I know, a lot of big words. To put it simply, the orifice within the solenoid is smaller than the inlets and outlets. Even more simply put: Not enough water is getting into the dishwasher. It's a design flaw and I'm not certain there are many ways around it. Just make certain that you have a good water feed to the dishwasher (no kinks, valve on completley etc.). One thing you may try is reducing the feed pressure (i.e. slightly turn down the water valve supply to the dishwasher). Doing so may diminish the venturi effect by equalizing inlet pressure. It's worth a try.

I have had the same errors here is a list of the codes that i found in the owners manual. This is all i know maybe it will help you some.

E1 Fill fault. Check that the main water supply is turned on. If it is, call a service technician.
E2 Wash and heating fault. Call a service technician.
E4 Water fill fault. Call a service technician.
E5 Drain fault. Make sure that nothing is blocking the drain and that the outlet hose isn’t kinked. If
that is not the case, call a service technician
E6 Low water fault. Check that none of the dishes have overturned and collected water. If this is
not the case, call a service technician.
E7 Alternating spray arm fault. Call a service technician.