Neff S5943X2GB/31 slimline dishwasher.
Customer complained of dishes still dirty and her pipework in house banging. Checked water pressure to tap ok. Machine slow to fill and valve pulses on and off causing the copper pipe to vibrate. Wash pump kicks in but at very low pressure. Manually filled machine and the wash pump works fine. Do you think this is a solenoid fault and or pressure switch.?