Whirlpool dishwasher Model DU1000 CGZ1 FK1603549 Heavy cycle is only cycle that works; other cycles do not light up or start. Repairman told us probably needed to replace touch pad and control panel but that one of these parts isn't available. Said replacing one part without the other would probably not solve the problem. Repairman didn't offer any solution because one of these parts isn't available. What should we do?

SOURCE: whirlpool dishwasher stopped working...

It sounds like the thermal fuse in the control console has blown.
Turn power off to unit.
Remove the outer door panel and then the console.
Remove the black plastic cover from over the circuit board if it has one.
You should see the thermal fuse clipped to the circuit board housing.
If you have an ohm meter, check for continuity across it, it should read closed.
If you don't have a meter, unplug the wires from it and and hook them together.
Turn power back on to unit, hold door switches down and cancel cycle. The washer should drain the water.
If this doesn't work, check your door switches to make sure they are closing properly.

SOURCE: problems with Whirlpool dishwasher model GU1500XTKB0

will these units (silo and jtrip) start back on their own? if so, it is likely they are heating the water.
otherwise it sounds like a logic board, unless there is a defective door switch or sensor issue.
electronics seem to be a recurring problem with whirlpool.
i would ask whirlpool (electorlux) to either buy it back or fix it.
good luck
mark

SOURCE: problems with Whirlpool dishwasher model GU1500XTKB0

have they checked the thernals on the bottom of the tub

SOURCE: Whirlpool dishwasher will not start

There is a small replacable part on the control panel circuit board which is like a fuse. It actually is a temperature fuse and it blows when the environment gets too hot for the circuit board. Unplug the dishwasher and take the door apart so you can see the circuit board. If you trace the power wires one of them leads to a little white module with 2 electrical tabs. Unplug the 2 wires and unsnap the module. You can check it with an ohm meter. IF its good the meter will register almost a short. f it's bad it will be open. The parts place I went to didn't even need a model number and he says he goes through a lot of them.

SOURCE: Touchpad--No Response

See the notes about cycles taking forever. The relay that controls the heating element commonly gets warm enough to melt the solder around the connection, and the internal water heater stops heating. The "2H" indicates how much time the onboard computer thinks it will take to wash the load, based on previous loads, but if the last cycle was longer than 99 minutes, it shows 2 Hours. Repairing the controller board (or replacing it) should solve the problem. This is such a common problem, Bosch should have had a recall, but didn't.