Kitchenaid Dishwasher-No power

[Bluesman]

I replaced a drain pump yesterday. After it running for about 15 minutes we noticed there was no noise coming from it. I went to the kitchen to investigate and noticed there was no power. Further investigation revealed water leaking/trickling on the floor from the drain pump.
I shut off the non-tripped breaker and closed the water shutoff valve. I am guessing the worst but really don't know where to start. I have the service technician book for reference and somewhat able to follow an electrical schematic.

Open to any thoughts.

 

[_teliaz]

Hey, good on you for grabbing the tech manual and being willing to trace the schematic. First thing I'd check is whether the leak from the drain pump reached any live components. If water got into the junction box or control board area, it could've shorted something and triggered a safety shutdown. Even if the breaker didn't trip, the board might have sensed a fault and disabled power internally.

Unplug the unit and pull the kick plate to inspect the wiring harness near the pump and control board. Look for signs of moisture, corrosion or burnt connectors. If you've got a multimeter, test continuity across the thermal fuse on the control board. On many Kitchenaid models, a blown thermal fuse will cut all power to the UI and motor.

Check the float switch too. If water pooled under the tub, the float might've activated and locked out the system. Some models use a flood switch that disables power until the water clears.

Do you recall if the pump gasket was correctly seated when you installed it? A misaligned seal could cause a slow leak that builds up over time. If you've got the model number handy, maybe I can help look up the exact wiring layout and safety features for your unit.

 

[Bluesman]

Thank you Taliaz!
I have yet to go back into it but will today after work. I knew my new drain pump was the root of the leak and I repositioned it and clicked it back in place. Just haven't had time to take it back out until this week.

The Model is: KDPE234GPS0
TYPE No. 582-1
Serial: F91972262

I seen a part on the very bottom with a 2019 date so am assuming it was built then.

I'll report back in about 12 hours or tomorrow morning on what I find after thus evening.

 

[_teliaz]

Thank you for providing the model number. For your specific unit, the thermal fuse is located directly on the main control board, often inside a small plastic holder. I would test its continuity first, since a short from the water leak is a very common reason for it to blow and kill all power. When you're inspecting for moisture, pay close attention to the wiring harness connector going to the new drain pump. Let the forum know what you discover when you open it up!

 

[Bluesman]

Yesterday evening was a bust. A storm blew through and my neighbor needed help clearing away the broken tree debris. DTE crews were working on it after that.
The dishwasher is my focus when I get home today though.

From memory reading up on this, to access the main control board, isn't that located within the door after removing a few torx screws for the panel cover?
Thank you.

 

[_teliaz]

No worries at all! Storm cleanup takes priority. I hope you guys are all doing okay there. You're right about where the control board is. On your model, it's tucked inside the door assembly. You'll need to take out the torx screws around the inner edge to open it up. Just go easy when pulling the panel off since some of the wires can be snug.

 

[Bluesman]

Strange. I responded to this a few days ago but looks like it didn't go through...
It's fixed. I checked the control panel and no fuses were open. I then removed the drain pump and made sure the sealing housing area and O-Ring were cleaned and applied fresh silicon grease and confirmed it was aligned and locked in place. I also blew out and remaining moisture from the plug and connector. I secured the unit and tried to power up but the lights did not come on. It was then I realized I forgot to check the GFCI it was plugged into. I removed the unit and seen it was tripped. I reset it, moved the unit back in place and it powered up. I ran it through a wash cycle keeping a close eye under it where I checked for any leaks. It ran perfectly.

Thank for your help!!

 

[_teliaz]

Great to hear you got it running! Thanks for updating everyone with the solution. The tripped GFCI is a common issue and easy to miss, so don't feel bad. The outlet likely tripped when the leaky pump caused a small ground fault. You handled it well by fixing the leak and checking for damage before looking at the power source. I'm glad your appliance works perfectly again.