Fault reported:- machine not filling. The valve solenoid is buzzing, and the water pressure is good. The valve seems to have stuck shut as a Zanussi one would do in the event of an overfill. (the valves look very similar in design). I cleaned a small amount of black sludge from the airbox entrance pipe and released the pressure to the safety diaphragm on the valve. No bad blockages found but I cleared all the hoses just to be sure.
Machine then filled OK and started to wash. So I pumped it out and set it to another cycle to test it again. Filled halfway and the valve ‘locked out’ again. 👿
I am not sure if it’s the airbox at fault; or the valve? BTW, the pressure switch is tee’d off the wash pump to rotor hose – so it’s obviously a high pressure type.