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LG Black Stainless Steel Series Top Control Dishwasher with QuadWash™ and EasyRack™ Plus

  • LDT7797BD

  • Black Stainless Steel

Key Features

  • QuadWash™ System
  • SmartThinQ™ Technology
  • LoDecibel™ Operation (44 dB)
  • Tub Light
  • 3rd Rack
  • Glide Rail

J.D. Power Award Winner

“Highest in Customer Satisfaction with Dishwashers”

Four Reasons to Buy an LG Dishwasher

Four Reasons to Buy an LG Dishwasher


Put Enhanced Cleaning in Motion

Achieve maximum cleaning throughout the entire cycle with LG QuadWash™. With four spray arms instead of two, QuadWash™ also includes Multi-Motion arms that rotate back and forth while spinning. The high pressure jets power-clean dishes from multiple angles.

Think you have to check on the dishes? Think Again

LG smart dishwashers come with SmartThinQ™ technology built-in, so you can get smartphone notifications when a cycle is complete. That means less waiting and more time to yourself. You can even check on the cycle status with voice commands using the Google Assistant, so you don’t have to lift a finger.

Count On It

When you buy a dishwasher, you want something reliable that you can count on. Because the Direct Drive Motor uses fewer moving parts and operates more efficiently, LG confidently backs the motor with a 10-year warranty.

Easy Loading & Maximum Flexibility

The newly-enhanced EasyRack™ Plus system provides outstanding flexibility and convenience, adjusting to just about any load of dishes to help ensure optimal cleaning performance. Easy to adjust on-the-fly, this racking system can shift to handle any challenge your dishes can serve up.

  • Height Adjustable 3rd Rack

    The height adjustable 3rd rack gives you more space for hard-to-fit items.

  • Smooth Operator

    Even your hardest dish loads glide in and out smoothly with the help of LG’s Glide Rail.

Quiet Operation

LG's technological advances, like the Inverter DirectDrive motor and the advanced self-cleaning filtration system, were designed with quiet in mind. At 44dB, this dishwasher is among the quietest dishwashers in its class.

Handle Design Towel Bar Handle
Wi-Fi Compatible Yes
SmartThinQ™ Yes
Total Place Settings 15
Upper Rack Dish Height Limit 7.1"
Lower Rack Dish Height Limit 12.5"
Cutlery Baskets Yes
Cup Rack Yes
Stemware Holders Yes
Fold Down Tines Yes (Half Fold on Upper & Lower)
BPA-Free Nylon Coated Racks and Tines Yes
Rack Handle Yes (Upper/Lower)
Glide Rail Yes (Upper)
EasyRack™ Plus System Yes
Height Adjustable Upper Rack Yes (One Touch; 3 Level)
Height-Adjustable 3rd Rack Yes
Control Panel Location Top
Electronic Controls Hidden SmoothTouch™ Controls with LED Display
SignaLight™ Cycle Indicator Lights 3
Time Remaining Indicator Yes (LED)
Tub Material NeveRust™ Stainless Steel
Tub Light Yes
Handle Matching Commercial Handle
Available Colors Matte Black Stainless Steel, Black Stainless Steel, Stainless Steel
Scratch-Resistant Yes (Black Stainless Steel Model Only)
Fingerprint Resistant Yes (Black Stainless Steel Model Only)
QuadWash™ Yes
Inverter Direct Drive Motor Yes
LoDecibel™ Quiet Operation 44 dB
Number of Wash Cycles 9 (Auto, Heavy, Delicate, Normal, Turbo, Download Cycle, Machine Clean, Rinse, Express)
Number of Options 8 (Dual Zone, Half Load, Energy Saver, High Temp, Extra Dry, Delay Start, Control Lock, Night Dry)
No. of Spray Arms 3 (Top, Upper, Lower)
SenseClean™ Wash System Yes
Vario Wash Yes
Detergent and Rinse-Aid Dispenser Yes
Hybrid Condensing Drying System Yes
End of Cycle Indicator Beeper + END Indication on Display
Hidden Water Heater Yes
Safety Float Switch (Leaks) Yes
Soil (Turbidity) Sensor Yes
Tub Insulation (Damping Sheet) Yes
Sound Absorbing Material (felt), Base) Yes
BPA-Free Nylon Coated Racks and Tines Yes
Anti-Bacterial Treatment (Sump, Inner / Outer filter, Drain pump case, Drain hose) Yes
Balanced Door Yes
Multi-Level (5) Water Direction Yes (Top Nozzle (Down), Upper Nozzle (Up/Down), Lower Nozzle (Up/Down)
3-Stage Filtration System Yes
Wi-Fi Yes
SmartDiagnosis™ System Yes
ENERGY STAR® Qualified Yes
CEE Tier 1
Energy Use (kWh/Year) 258 kWh
Water Factor (WF) 2.8
Product Dimensions (in) (W x H x D) 23.75" x 33.6" x 24.6"
Product Weight (lbs) 81.6 lbs
Depth with Door Closed with Handle (in) 27 1/8"
Depth with Door Open (in) 50.5"
Clearances (W x H x D) 24" x 33.5" x 24"
Carton Dimensions (in) (W x H x D) 28" x 34.7" x 29.6"
Shipping Weight with Carton (lbs) 94.8 lbs
Labor 1 Year
Parts 1 Year
Control Board and Rack Parts 5 Years
Direct Drive Motor 10 Years
Stainless Steel Door Liner or Tub Lifetime
UPC 048231022200

What People Are Saying

Rated 1 out of 5 by from Used 3 Times and It Failed. Washed dishes 3 times before it failed with a "LE" error code on Thanksgiving day with a full load of dishes. The "LE" error code indicates that the motor has failed. It has been nearly 3 weeks and the dishwasher has not been repaired because the service center is still waiting for parts that are on backorder. I asked LG and Home Depot to replace the dishwasher but they both refused.
Date published: 2017-12-12
Rated 3 out of 5 by from Questionable Value for the Money Not working how it was designed. Dishes are wet at the end of the cycle. Found detergent pod partially left in compartment after wash. Unable to access buttons once door is shut.
Date published: 2017-12-03
Rated 4 out of 5 by from Beautiful Looking piece to compliment my Kitchen Unit looks great in the kitchen and runs silent. Was a little confusing at first to get use to but only cause it is a dishwasher of the future. With so many settings and ways to control it it becomes very use full once your used to it.
Date published: 2017-11-20
Rated 5 out of 5 by from Great features! My son bought this dishwasher for me. I have 9 grandchildren living with me ages 1 to 18 and almost everyone has to take turns filling and emptying the new appliance. This is our third dishwasher in 13 months. Already we see a HUGE difference in the quality of this machine compared to our others. It washes so fast! Tst one took over two hours to complete the cycle. The washing options are so appreciated depending on the type of load we are washing. Its especially nice that the controls are not assessable to our two toddlers. The third top rack is a real hit. I notice each kid has their own opinion as to what kitchen tools should go on that rack. Of course, I know whats best! I have never had such a state of the art dishwasher and I have every confidence that we will be using it for YEARS not months.
Date published: 2017-11-09
Rated 5 out of 5 by from And I thought or last dishwasher was great First off, and foremost, this washer gets our glasses cleaner than any washer I've used. I'm even cycling through the glasses to get them all spotless. Second, this dishwasher is more customizable (fold down splines, etc.) than our last — and it was very customizable. Third, it has a third shallow rack at the top that's perfect for spatulas and whatnot. Finally, it is Wi-Fi connected. It allows for custom cycles to be downloaded (which we have yet to try), and it alerts me on my phone (and Apple watch) when it's done cleaning the dishes.
Date published: 2017-11-06
Rated 5 out of 5 by from I can not hear it running ! I'm excited. So incredibly quiet, I wonder if it's running. Dishes/glasses actually dry. Stainless steel interior added plus. Adjustable racks are a must for anyone, and being able to clean either top or bottom is great idea (did not realize this prior to purchase) LED light comes on the door is open, yes I love this feature. While I have only had this appliance 2 months I find that I do use all the features. Being able to control the how I want to wash what's inside adds to the energy efficiency and did I say: IT IS QUIET.
Date published: 2017-11-03
Rated 4 out of 5 by from Excellent dishwasher! A very well-designed and well-made product overall. The lights in the tub area and the cutlery tray at the top are genius. The unit is very, very quiet. I would have given it five stars, except for this one design flaw: The wireless feature only works on older 2.4Ghz wireless. It does not support modern 5Ghz wireless. On a top-of-the-line and top-dollar product, LG should have spent the extra two bucks to make it work with both 2.4Ghz and 5Ghz wireless. Other than that, it's great!
Date published: 2017-11-02
Rated 5 out of 5 by from my new dishwasher my new dishwasher is my new best friend and I thank LG, the dishwasher God
Date published: 2017-11-02
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We're here to support you with our product.

View LDT7797BD Product Support

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Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

We like the tub light feature, but it only stays on a short time after opening the door. Is there a way to manually turn the light on and off?

Asked by: Envarch
There is no manual on switch. ^AC
Answered by: amber
Date published: 2017-12-19

What is error code AE

Asked by: Tomterrific54
Great question, Tom. Head to the following link to troubleshoot this issue so that the error code doesn't continue - ^RW
Answered by: RobLG
Date published: 2017-11-27

Where do you find the wifi password for the dishwasher?

Asked by: KN1977
The Wi-Fi password would be your home network password, unless you are connecting to the dishwasher using an iPhone. For assistance, please reach out to our support team via Twitter @LGUSSupport or
Answered by: Shena
Date published: 2017-11-16

How long is the wash cycle take and is there a quick wash on any LG dishwasher?

Asked by: Terry 123
The LG Top Control Dishwasher with QuadWash™ and EasyRack™ Plus, Model # LDT7797ST has 9 wash cycles (Auto, Heavy, Delicate, Normal, Turbo, Download Cycle, Machine Clean, Rinse, Express), that will vary in duration. The actual running time and cycle time will be shown on the display but may change depending on options chosen, soil level, water temperature, and hardness of water. Therefore, display time and actual running time can be different. The Express cycle is designed for lightly soiled dishes and has the shortest run time (32-103 minutes)...^IFV
Answered by: LGJoel
Date published: 2017-09-06

Does the dishwasher with the front control panel in black stainless steel have a sticker on the front of it? I read that to remove the 10 year warranty sticker from the front of the dishwasher would probably cause scratches on the finish. Model LDF7774BD

Asked by: Seajay
I just took mine off. There is no residue if you just lift it straight off. And there was nothing on the panel. I think some have been worried to try.
Answered by: Country Gurl51
Date published: 2017-08-19

Where can i obtain the wash times for the different wash options. Being Single and not using many dishes i usually just want about a 30minute wash. Does the LDT7797bd offer the 30minute wash?

Asked by: mikl101
The Express cycle in the LG Black Stainless Steel Series Top Control Dishwasher with QuadWash™ and EasyRack™ Plus, Model # LDT7797BD is designed to quickly clean lightly soiled dishes (Time: 33 minutes). It does not have drying. You will find a table for the cycle wash times and water usage for each cycle on page 26 of your owner's manual for this unit. If you need another copy of the owner's manual, you can visit our support page for this dishwasher at and download and print out a PDF copy of one...^IFV
Answered by: LGJoel
Date published: 2017-11-21

How do you unlock the controls? 

Asked by: Scrimshaw 116
We regret the trouble you have experienced with this dishwasher. According to the information listed on page 23 of the owner’s manual, the CONTROL LOCK feature helps prevent settings from being changed during a cycle. Selecting this feature locks all of the buttons, except for the POWER button, on the control panel. This will NOT lock the door. While a cycle is running, press and hold HALF LOAD and ENERGY SAVER simultaneously for 3 seconds to activate or deactivate this feature.
Answered by: NeilE
Date published: 2017-10-31

Can you use CLR to clean the lime and calcium scale off the inside?

Asked by: Jackie2727
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