Dishwasher will run through the wash cycle but when it comes to the Rinse, will not advance. Moving the knob manually will allow rinse to continue but the Heat Delay light will come on (I suspect this is from the water sitting and losing temperature until we move the knob).
Is this from a bad a timer or something else? Unit has heat/steam so the heating element appears fine. I've read timers usually dont go bad so before I plunk down $144 plus S&H I wanted to get expert opinion.

Thanks in advance,
John