FIXED LG Dishwasher LDT7797BD error code HE and control panel has no lights

[nerfjames]

Model Number

LDT7797BD

Brand

LG

Age

1-5 years

I recently picked up a used LG LDT7797BD Dishwasher in hopes to fix it up and get it working. I knew at the time of purchase that it would display the HE error code and not complete the heat portion of the cycle. I did not do a ton of homework before getting the dishwasher, because I assumed I would be able to put in a new heating element and most likely fix the problem. But unfortunately I discovered that my model LDT7797BD doesn't use a traditional heating element. So now I'm at a bit of a loss as to what I should attempt first to fix the problem. From what I've read on this forum, it sounds like there could be some sort of heating element in the Casing Assembly? Would that be the best place to start?

Also, another odd issue the unit is having (that apparently the previous owner did not have) is that none of the lights are working on the control panel. The buttons work, the unit will chime & start, but no lights are displayed at all on the control panel. The interior lights inside the dishwasher work fine. I do not know if these two problems could be related.

Thank you in advance.

 

[Jake]

I don't have any tech data information on this model.

The closest I have is for this model, which uses the exact same Heating Element (aka Casing Assembly) yours does:

LDF5545ST LG Dishwasher "HE" error display

Hi. I have an LDF5545ST that's been giving me the HE error on the display. I turned it off, reset the breaker, turned it back on but still every time I run it I get the HE error. I fear that the heater element is gone but to replace it looks like a pretty un-fun job. Is there anything else I...

www.applianceblog.com

Here's the Heating Element (aka Casing Assembly) for your model:
ABT72989206 Casing Assembly,pump


Yes, sounds like you have 2 problems.

Here's the control panel assembly for your model: AGM75469910

Jake

 

[nerfjames]

Just wanted to report back that the ABT72989206 Casing Assembly,pump did in fact repair the HE error code problem. I have not attempted to fix the control panel yet. Thank you.

 

[Jake]

Excellent James, glad to hear the new Casing Assembly fixed the HE error code problem.

Thanks for the update!

Jake