LG
Dishwasher

Model #LDS4821ST Official LG dishwasher

Here are the diagrams and repair parts for LG LDS4821ST dishwasher, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Installation guideOwner’s manual

Showing 10 of 105 parts

Dishwasher Diverter Motor Seal#M031

Sump assembly parts Diagram

Dishwasher diverter motor seal

Part #3920ED4009B
BEST SELLER
This item is not returnable
In Stock
$6.49 | 
13% OFF 
Phone Price: $7.49
Dishwasher Noise Filter#A160

Exploded view parts 2 Diagram

Dishwasher noise filter

Part #6201EC1006L
BEST SELLER
In Stock
$33.45 | 
13% OFF 
Phone Price: $38.45
Washer Wash Pump Motor (replaces 4681EA2001S, 4681EA2002D)#M050

Sump assembly parts Diagram

Dishwasher wash pump motor

Part #4681EA2002H
Replaced by #4681EA2002H
?
Manufacturer substitution
This part replaces 4681EA2002H. Substitute parts can look different from the original.
BEST SELLER
In Stock
$71.78 | 
7% OFF 
Phone Price: $76.78
Dishwasher Door Cable (replaces 4933DD3001A)#F013

Tub assembly parts Diagram

Connector

Part #4933DD3001A
Replaced by #4933DD3001B
?
Manufacturer substitution
This part replaces 4933DD3001A. Substitute parts can look different from the original.
BEST SELLER
In Stock
$10.53 | 
16% OFF 
Phone Price: $12.53
Dishwasher Diverter Motor (replaces 4681ED3001B)#M026

Sump assembly parts Diagram

In Stock
$31.22 | 
14% OFF 
Phone Price: $36.22
Dishwasher Dishrack Roller, Lower (replaces 4581DD9002B)#A142

Rack assembly parts Diagram

Dishwasher dishrack roller, lower (replaces 4581dd9002b)

Part #4581DD3003B
BEST SELLER
This item is not returnable
In Stock
$4.88 | 
17% OFF 
Phone Price: $5.88
Dishwasher Circulation Pump Mesh Filter (replaces ADQ32598201)#M110

Sump assembly parts Diagram

In Stock
$77.88 | 
6% OFF 
Phone Price: $82.88
Dishwasher Drain Hose#A130

Exploded view parts 2 Diagram

Dishwasher drain hose

Part #AEM69493803

The manufacturer no longer makes this part, and there's no substitute part

Dishwasher Dishrack Roller Assembly, Upper#A152

Rack assembly parts Diagram

Dishwasher dishrack roller assembly, upper

Part #4581DD3002A
BEST SELLER
This item is not returnable
In Stock
$6.27 | 
14% OFF 
Phone Price: $7.27
Dishwasher Dishrack, Upper (replaces 3750ED1005A, 3750ED1005E, 3751DD1002A, 3751DD1005B, AHB32983725, AHB32983734, AHB32983762)#A151

Rack assembly parts Diagram

Dishwasher rack

Part #MGR47998501
Replaced by #AHB32983761
?
Manufacturer substitution
This part replaces MGR47998501. Substitute parts can look different from the original.
In Stock
$241.82 | 
$10.00 OFF 
Phone Price: $251.82

Symptoms common to all dishwashers

Choose a symptom to see related dishwasher repairs.

Main cause: damaged rack height adjuster
Main causes: water supply problem, stuck overfill float, clogged water inlet valve screen, water inlet valve failure
Main causes: improper loading, low water temperature, improper detergent dosage, detergent dispenser failure, spray arm or pump problems
Main causes: damaged or stuck spray arm, leaking door seal, damaged door hinge, leaky heating element water seal, cracked water supply line
Main causes: broken door latch, tripped circuit breaker, broken heating element, faulty vent fan, sensor failure, control system problem
Main causes: light switch beside the sink turned off, lack of power, bad dishwasher door switch, control system failure, wiring problem
Main causes: clogged kitchen sink drain, clogged drain hose, drain check valve damaged, drain pump failure, control system problem
Main causes: broken door spring, damaged or broken door hinge
Main causes: glass or popcorn kernel stuck in the chopper blade, drain line vibrating against the cabinet, debris in wash pump or drain pump

Repair guides common to all dishwashers

These step-by-step repair guides will help you safely fix what’s broken on your dishwasher.

How to replace a dishwasher door latch assembly

If the dishwasher door doesn't click shut, a broken door latch is a likely cause. Follow these instructions to replace it yourself.

Repair difficulty
Time required
 30 minutes or less
How to replace a dishwasher user interface control

The user interface control houses the selection buttons and display. If it fails, you can't select the cycle and settings. Follow these instructions to replace it yourself.

Repair difficulty
Time required
 30 minutes or less
How to replace a dishwasher thermal fuse

A completely dead control panel often indicates that the thermal fuse on the electronic control board is blown; follow these steps to replace a blown thermal fuse in your dishwasher.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all dishwashers

Use the advice and tips in these articles and videos to get the most out of your dishwasher.

November 13, 2022

7 Tips to Get Your Dishwasher Ready for the Holidays

7 Tips to Get Your Dishwasher Ready for the Holidays

Find professional tips that can help you get your dishwasher ready for the holidays.

December 23, 2021

How to reset a Whirlpool dishwasher

How to reset a Whirlpool dishwasher

Learn how to reset a Whirlpool dishwasher when its control freezes up.

August 17, 2021

How to read a wiring schematic video

How to read a wiring schematic video

Learn how to decipher symbols so you can buy the right part for your problem.