This model has given no problems from new(4 years). Now suddenly when selected on + cycle wash,the water doesn't flow in,but the machine just makes quiet 'humming' noise. Checked door closed: checked water inlet pipe not 'kinked' and on/off valve still set to on: Checked power plug inserted properly and confirmed power supply ok....selector light has always lit up when switched on...only one wash selector light shows(not all available lights are lit up). Mains water pressure is good. All water spray inlets/outlets have been checked and cleaned thoroughly. Because can't find User Manual immediately to check Fault Finding/Troubleshooter sections; I need to 'source' quickly an online Manual to check out other simple solutions before calling out a Service Engineer. Any help would be greatly appreciated please? THANKS.