My F&P gw709au won't fill up or go through wash cycle. ?

That is fault code 50. Hot water inlet valve fault. The control board monitors the circuit through the hot & cold inlet valves. It will show this error when it gets a bad reading. It could be a faulty hot water inlet valve but it could also be a fault in the control PCB itself. You will need a tech to test & decide which is at fault.

Lincoln Appliance NZ
May 2014