BEKO DWD5410W DISHWASHER PROGRAMMES NOT WORKING?

MY DISHWASHER ONLY WARMS UP ON SETTINGS 4 AND 5 SETTINGS 2 AND 3 LEAVE MY DISHIES WET THROUGH AND IM FAIRLY SURE IT THE DRYING PART THAT MUST BE FAULTY OR COULD THIS BE SOMETHING MORE SERIOUS LIKE THE MAIN CONTROL BOARD (PCB) AS I HAVN'T HAD MUCH EXPERIENCE WITH WORKING ON DISHWASHERS I HAVE NOT OPENED UP MY MACHINE YET! BUT ANY HELP OR TESTS I COULD DO TO IDENTIFY THE PROBLEM WILL BE GRATEFULLY RECIEVED.