[jeep_man]

I have a Whirlpool dishwasher in my shop, model number 7DU1100. The problem is that the normal light flashes continually and the user is unable to use the dishwasher.

I am not one to tell the customer that its simply the board and it needs to be replaced. I like to understand it and know for sure. I sold them the dishwasher 4 years ago and I can attest that they probably only used it less than a dozen times in that period.
Does anybody have any knowledge of these machines? Is there a way to get this to go into diagnostic mode? I tried pushing the Sani Rinse and alternating with the heated dry and this did not send it to diagnostics.

Thank you
jeep_man

[talaniman]

The blinking normal light is the diagnostic mode and means the keypad/controller are defective. The simplest explanation is the best. It surely cannot achieve any other diagnostic function until this condition is remedied.

[drtom4444]

Many of these dishwashers were made with defective and/or weak capacitors made in Taiwan that have leaked, swelled up and shorted/opened. This is due to them using a stolen formula for Japanese capacitors filling fluids where they failed to steal the final step in the process. That is why many products made in the last 20-30 years since 1989 have failed. Here are some manuals: https://dl.dropboxusercontent.com/u/...ishwashers.zip
Look on YouTube to see which capacitors need replacing on your model. I fix TVs like Coby TVs which have power supplies that have failed from these bad capacitors, too. Make sure you use a polarized capacitor if the original is polarized. Use the same type, but you can use a higher voltage for more durability.

[jeep_man]

Excellent . Thank you very much!

[WallyHelps]

...
Make sure you use a polarized capacitor if the original is polarized. Use the same type, but you can use a higher voltage for more durability.

Don't go too much higher on the voltage, as electrolytic capacitors like to operate reasonably close to their rated voltage.
WallyH