tricity bendix DH086 stops after initial filling

Ok ive read a fair bit about this dishwasher from searching so i just need to confirm it buggered before i replace it as it 9 year old.
Ive cleaned out the blue tubes and to be honest they wernt that bad anyway.

Machine fills ok and u hear the pressure build up in the spraying arms as it does. It then stops spraying as normal to fill with the extra water for a few seconds it needs. It then stops. I assume this is where it normally heats the water as it heats it as its going along. Is it a timer fault (in the bin it goes) or something more simple im missed when reading all about it. No smell of burning from the heater at all or strange noises. Im fully able to use a avo meter should u suggest i test something

many thanks for your help on this matter as heven forbid i have to wash any more pots as its beneath her to do it lol