[Cici]

Whirlpool Dishwasher Quiet Partner II DU1100XTPSB used twice/thrice per month no longer starts automatically as soon as the "Start/Resume" button is pressed (doesn't light up). Almost all other lights work, but not the Start/Resume light. Tried the "normal//heated dry" combination 4x, and all the lights lit up. Immediately after that, pressed "Start" and the dishwasher started washing alternating between "Normal" and "Rinse Only" cycles. I could hear the water running then the draining, it lasted for about 20 mins. Thinking that I fixed the machine after that procedure, I put a load in and had the same problem: The Start button does nothing. What's going on and how can I fix it? It seems to be a minor problem since the dishwasher does work, but why doesn't it start normally?

[denman]

Here are your parts
Parts for Whirlpool DU1100XTPSB Dishwasher - AppliancePartsPros.com

See the attachment for the tech sheet.

The usual way to troubleshoot this problem is to check the control panel (keyboard) outputs with a meter (see the tech sheet).
If it checks out OK then replace the control board.
Still a bit of a gamble but your odds are better getting the correct part the first time.


You may also want to try the following
Connector Cleaning / Checking
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. Use electronics contact cleaner or isopropyl alcohol.
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.