hi, been out to a dishwasher ADP5966 for an F4 fault, it had drained ok, I took off the pump and checked for blockages, none. When I put it back onto a rinse it aborted after a few minutes washing with F6. Is it likely the optical sensor is at fault?
f4, check the black grid under the filters, make sure it’s not clogged with crud.
f6, flow meter, unplug it, clean and tighten the plug and put it back on. works 99.9{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of the time.