I have a GE ZBD5900D01SS Monogram dishwasher. The wash cycle will not complete. Sometimes the "fast wash" cycle will complete, but the "normal wash" will stop sometime before the rinse cycle. Neither the "fast wash" or "normal wash" cycles will proceed past the initial rinse if I turn on the temperature "boost" or "sanitize" options. I thus suspect something is wrong with the heating element circuitry. The heating element itself has continuity, as does the overlimit thermostat (which is down by the pump). There must be a temperature sensor somewhere, in addition to the thermostat, to permit the different water temperature options. There is a probe-like thing that is affixed to the inside of the door next to the control board, and is attached to the control board with a short (6 inch?) wire, perhaps a thermistor... not sure if this is it.

What else should I check? Is there any way to run a diagnostic on the control board to see whether it is functioning properly? I don't want to order a new control board ($300) until I've checked everything else.

When the cycle stops, the dishwasher beeps and then all the lights on the control panel go out.

Thanks for any help!

Is there any blinking lights, these blinking lights will be the fault code.

There is no mini-manual anywhere to be found, unfortunately.

Have you looked for the mini manual glued to the backside of the toekick, that is where they are on these models

Yep, I've looked everywhere. I've had all the panels off, etc. testing components. The previous owner must have lost the manual.

The problem seems isolated to the heating system, and since the overlimit thermostat and heating element seem fine, I'm wondering if there is something else to check, or whether a new control panel is the only solution.