I have a whirlpool dishwasher model DU1055XTPQ3. It’s controls are all touch pad. I have noticed that a few of the led lights are very dim. Also sometimes when it is running some of the lights start blinking and other lights come on that should not be on such as the delayed start time lights. I noticed the other night while the machine was in wash cycle that the 4 and 6 hour delay time lights were both on and the wash cycle light would blink and then go off for a minute or two and either come back on solid or go back to blinking or off again.
Could this be a bad touch pad or bad control module?
It seems as though the machine is functioning correctly although I think it is drying the dishes even though I do not select dry.
It could be either, from your description it sounds more like a control board problem but I would try to narrow it down somewhat.
I would check the keypad as shown in the tech sheet with a meter.
Also clean the connector.
Check the wires that go from under the unit up to the control board.
If the above is all OK then I would go with the control board.
RIBBON CABLE CLEANING
Unplug the unit
Open it up
Remove the ribbon cable from the keypad to the control board at the control board.
Clean the edge connector.
If it is the type where there is not a connector just the insulation is removed, it can be cleaned with a pencil eraser. Do not use an ink eraser as it is too abrasive.
Check the tracks in the ribbon cable for hairline cracks. A magnifying glass helps here.
Would not hurt to clean the connector on the board. Use electronics contact cleaner or isopropyl alcohol and a tooth brush. Be gentle and do not reconnect till all the solvent evaporates.
Reconnect everything and give it a try.