GE GFWS3500LWW - Front display has missing LEDs from number. Sometimes washer will not power on, unplug and replug sometimes resets it. Every now and then all the lights on the display flicker.

SOURCE: GE WASHER WON'T GO THROUGH THE DRAIN CYCLE AFTER WASH CYCLE

Most likley it's the drain pump! check the wiing and pump

SOURCE: GE Front Load Washer WSXH208HIWW Door Won't unlock

more info/unplug reset wait 5 min

SOURCE: kitchenaid kudso1dlss3 clean light flashing cannot do a new cycle

I do not have the same model as you, my model is KUD01ILBS6 but I have the same problem. A service tech told me it was a error code and here is how to fix it.

1 open the dishwasher door
2 hit high temp scrub button
3 then hit energy saver dry button
4 do step 2 & 3 again
5 close the door
6 hit the cancel button
7 you can hit cancel button again then try to start your dishwasher

This works for me, you may have to do this every few months because there is a glitch in kitchenaid where if the water temp is not sensed right it will keep the dishwasher from working. It took me 3 service calls to find this out.

SOURCE: ATF6000ES front load washer won't spin during regular cycle.

clogged filter will cause this error code. I have the same washer and the filter located inside the rubber boot attached to the pump was full of junk. there was enough room for water to get thru but not enough for full volume. clean it out and it should work. note : its a pain to get the boot back on so be ready and take it slow. this worked for me.

SOURCE: Washer doesn't run all the way thru cycles. It's

Removed hose connecting to water pump at tub. Removed clog (ink pen, coins, etc). Replaced and ran washer. Ran through all cycles - no leaking, no pausing of cycles. Problem is resolved.