Went through the online info I could find.....
Ensured drain lines were clear. Bench tested the existing pump - worked but noisy. Reinstalled and nd error again.
Replaced pump with new. Ran a short cycle and seemed to work. When I washed a load it came back with an nd error when it hit the rinse part of the cycle after the water pumped out of the washer - could hear it draining.
Double checked everything and all seemed OK.
Found if I manually drained the waste water in the drain lines machine will startup but quits when at the rinse cycle. Didn't touch the machine and after some 10 to 15 minutes the nd error flashes up again. Also noticed - the machine is very slow "to think" as it starts up or goes to the next step in the cycle.
Does this point to the main control panel as the problem?? Not really interested in throwing more parts into it unless this is the correct next repair step.
Can't seem to find any information online.
Many thanks for your help.