I've a Bosch Model #SHX46B02UC/14 dishwasher. It's about 5 years old and runs once per day on average. For about a week the cycle time runs at near 3 hours. I always run hot water at the sink before running the washer and until now have not had a problem. I'm thinking either the internal heater or maybe the board is not functioning and therefore not getting the water temp up. Am I on the right track? If so, does anyone know the series of buttons I need to press to run a diagnostic? Thanks as always!

I hired someone to fix it. It was the board. $200 installed.