[PLC0174]

My Whirlpool dishwasher model DU100XTPSB the start button has stopped working every button lights up and i can still hold down the drain button and it will drain. But when i push the start button nothing? Please help!!

[denman]

Your model number seems to be short a couple digits, the following is fo a XTPB3.

Here are your parts
Replacement parts for WHIRLPOOL DU1100XTPB3 UNDERCOUNTER DISHWASHER | AppliancePartsPros.com

Here is the tech sheet, see the attachment.

Could be the start button is shot.
Check the keypad with a meter.

Try the diagnostics.

You may 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.
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.