Chosen Solution
Our LG dishwasher- Inverter Direct Drive- recently started having its control panels lights flickering/fritzing when turned on, will make iradic beeping noises and will do this when the dishwasher is running. The dishwasher turns off mid cycle when this happens as well
Update (03/30/2019) Thanks for the response! I’ve taken off the front door and the control panel- I’ve don’t see what looks like a control board
. The front control panel doesn’t seem to have anything significant standing out to me as damage
Breata Jessen from your video (thanks for posting it) it looks like a bad control board. Your DW under normal circumstances would at least give you an error code etc., but your display goes all haywire. Time to look at the control board. This part ==» LG DW Disassembly of the manual should help you getting there. Check your board
for obvious damage etc., and let us know what you find. You can always post some pictures with your question so we can try and help you further. Adding images to an existing question Update (03/30/2019) Breata Jessen you find the control board in the base assembly. K251 in the attached drawing. part number is EBR79609805 (or EBR79609803)since the manufacturer substituted part EBR79609803 with this part EBR79609805
Hello, This is moisture getting into the control panel. This is a known LG issue, if it happens again call LG Customer Service even out of warranty and speak to a supervisor. They will install and ship a new control board with better moisture barrier.
I work on these things every day for a living and I can tell you with 100% certainty that to resolve the issue you have to replace the control panel/user interface. Replacing the main PCB does nothing. According to LG this is caused from moisture getting in the control panel. I’m not sure if I buy that due to the fact that the electronic board(s) under the buttons are all covered with a 1/8” thick clear rubber coating to prevent moisture from getting to the panel. I normally just order the control panel assembly. It’s much easier to change than trying to change out the little boards underneath the user interface. It’s also cheaper. On this model, LDF5545ST, the part number from the dishwasher control panel assembly is: AGL 75172601. Basically you take the bolts out of the top part of the door and the panel assembly will come right out. Make sure the power is off when you do. Most of them there is only one plug.
I had mine replaced and then about a year later it started doing it again,I opened it back up and found a loose connection on one of the plugs. I pushed the plug back in place and it’s working again.
I’ve found that running the dishwasher on a short “turbo” cycle gets my dishes clean and avoids the hours long cleaning process. After the cycle I immediately open the door to let the steam out. Occasionally I will use the “normal” cycle but still open the door to let the steam escape when finished.
I took off the control panel and looked at the backside of all the mode select push buttons. I noticed that the power button connection had three points where it was soldered to the control panel. One of the connections appeared to look kinda rusty. I took a soldering iron and carefully heated up the old rusty solder, wiping it away with a toothpick. Then, I refilled the joint with some fresh electronics solder. I don’t have much soldering experience at all, so it wasn’t pretty. But it was easy enough. And now it has fixed the issue. I am thinking of taking some hot glue or silicone and covering the solder points to protect them from the moisture.
The control panel (panel containing the buttons and lights) seems to be very susceptible to moisture, steam especially….clearly a design failure. I removed the six screws holding the control panel in place and unplugged the multi-wire plug from the back of the board to free it from the machine. I let it dry face down in the sunlight for a day, laid it in front of a heater vent at night, etc. to really dry it out well. Before replacing it, I stretched a long piece of plastic food wrap across the opening where the panel is placed, snaked the wire and plug under the wrap, plugged in the panel, installed it with the 6 screws, then trimmed off all of the excess plastic wrap from around the edges carefully with a razor blade. This prevents moisture from getting to the board. Lastly, I open the door as soon as the “END” light is illuminated. I switched to the “Turbo” cycle (59 minutes) to use the dish washer for the shortest period possible thus minimizing panel exposure to steam. This seems to fix the issues!
