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Old 01-04-2013, 08:18 AM
pautler pautler is offline
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Default Kitchen Aid seems to have problem with control board or keypad
Model Number: KUDI01TJBL0   Brand: Kitchen Aid   Age: More than 10 years   

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I have a Kitchen Aid KUDI01TJBL0 dishwasher (2001 model, I think)

All of the buttons/lights seem to work fine, but the 'Start' button doesn't do anything. The "Cancel/Drain" button DOES work, and will run the machine through a 2min drain cycle.

I opened things up and used my meter to test the following: thermal fuse, door handle latch switch, the water fill float switch, the fill valve, and the ribbon cable coming from the keypad. I didn't test the ribbon cable super thoroughly, but I put my my meter across the pins for the various buttons (using 'diode mode'), especially the 'start' button, and they all seemed to behave properly.

I was thinking it was a problem with the electronic control board, so I ordered part 8564543 from APP.

The new board arrived (although I'm not sure if it's really 'new' - it looked like it might have been used/refurbished). After restoring power to the machine, I found that some of the buttons didn't seem to work, but others did, and I was able to get the machine to start. It ran for a while, and almost seemed to get stuck in a bit of a 'loop' and then it stopped. The "Heavy" light was flashing and the water did not drain out. Pushing other buttons on the keypad would only result in other lights flashing. I was not able to cancel/drain the machine, or get the flashing lights to turn off. I turned off the breaker (for quite a while...10+ minutes) but as soon as I restore power to the machine it would turn on for a few seconds and then stop with the "Heavy" light flashing. I repeated this many times, each time turning the power off for longer.

Finally I turned the power off, removed the 'new' control board and put my old one back in, and restored power. I used the cancel/drain button to empty the water, and then I was able to run the machine through 1 complete cycle successfully!... but then it went right back into the original state (all buttons & lights seeming to work fine, including the cancel/drain button, but NOT the 'start' button.)

I swapped the two control boards back and forth a couple times, and was never able to get the machine to run through a cycle again. The original control board consistently results in all the lights/buttons working except for the 'start' button, and the 'new' control board tries to run the machine as soon as power is turned on, and then stops with the 'heavy' light flashing.

Sooooo, I'm thinking that either my original control board and the 'new' control board I received both have problems (albeit it different problems) or it's actually my console/keypad that is the problem. Or maybe something totally different?

Any help or advice would be GREATLY appreciated! I'm thinking I should try to test my console/keypad more thoroughly - testing every single pin/button combination on the ribbon cable, with polarities in both directions, to test the diodes - but I haven't found a great chart that tells me all of the mappings between buttons and pins.

Thank you!

-Joe


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