F&P DD603
*Top drawer error code F4
*Hangs up part way through any cycle - i.e. a 38 minute cycle hangs at 25 minutes like clockwork every time
*Switched to new controller module, same issues with not difference
*Not leak related, ran with bottom drawer out observing no leaks and dry flood pan
*Machine will run through the full diagnostic 5 (or is it 7) minute test mode without a problem
*Machine will run through 12 minute rinse without a problem

Is this the heat element needing replacing? (with a blown sensor)

Is there anything else I should try first before tearing into it to get to the heat sensor?

Thanks and best!

Chris