In reply to your last note, I usually only use the ECO setting, so before yesterday (see below) had not tried any other setting.
Wed PM Switched on at power point on wall after being off all day, switched POWER switch on got centre (RINSE, FRAGILE, ECO) and right (NORMAL, HEAVY) columns of lights illuminated and 5 seconds later five beeps etc. with no lights. Switched POWER switch off, then after a short pause pushed it on again, I then immediately pushed program switch and set to ECO, then pressed START. The dishwasher seemed to run normally, so I pushed PAUSE, put in a small washing load and then pushed START again. The dishwasher completed a full wash OK. Switched POWER switch off, then opened dishwasher door, allowed to cool and dry for about an hour, then emptied. Then decided to try it again, went through normal start process to set up a RINSE only with no load, this was also successful. Dishwasher was left switched on at the wall overnight.
This morning, switched POWER switch on got centre (RINSE, FRAGILE, ECO) and right (NORMAL, HEAVY) columns of lights illuminated and 5 seconds later five beeps etc. with no lights. Tried to repeat the previous successful run on an ECO wash with no load, but still no success, left wall switch off.
I intend to repeat an ECO run as above after two hours.