Brand:
LG
Category: Dishwasher
Document Type: Parts/Service
Language: EN
Parts/Service for LDS5540ST/WW/BB
Uploaded: Nov. 21, 2025, 6:08 p.m.
The manual provides detailed instructions on the features and technical explanations of LG dishwashers, including a Vario Spray System, Slim Direct Motor™, and Hybrid Drying System. It also outlines various wash cycles like Power Scrub, Normal, Delicate, Quick, Rinse Only, and Dual Wash, along with cycle options such as Extra Dry, Extra Rinse, Delay Start, and Child Lock. The control panels for different series (LDS5540/LDS5560, LDS5040/LDS4921) are detailed, including how to cancel cycles and use the Smart Diagnosis feature. The manual also includes troubleshooting methods based on error messages and symptoms, installation instructions, and exploded views of various parts of the dishwasher.
Troubleshooting and error codes
| Trouble Diagnosis | Symptom | Cause | Solution |
|---|---|---|---|
| No power | No power at all | Power cord not plugged in. The circuit breaker is tripped or the fuse is blown. |
Plug in the power cord. Reset the circuit breaker or replace the fuse. |
| Display is off | Control panel is locked. | Release child lock. | |
| Main PCB is not supplied with power. | Check the power supply to the main PCB. | ||
| Does not start | Door is not closed properly. | Close the door. | Ensure the door is fully closed and latched. |
| Delay Start is set. | Cancel or wait for the set time. | Press the Cancel/Power button to cancel the Delay Start. | |
| Does not wash | Water supply is turned off. | Turn on the water supply. | Open the faucet connected to the dishwasher. |
| Inlet hose is kinked or clogged. | Straighten or clean the inlet hose. | Check for any obstructions or kinks in the water inlet hose. | |
| Water inlet valve is faulty. | Replace the water inlet valve. | ||
| Main PCB is faulty. | Inspect and replace the main PCB if it is determined to be faulty. | ||
| Does not drain | Drain hose is kinked or clogged. | Straighten or clean the drain hose. | Ensure the drain hose is not kinked and is free of obstructions. |
| Drain pump is clogged or faulty. | Clean or replace the drain pump. | Inspect the drain pump for debris and replace if faulty. | |
| Noisy | Dishes are not loaded properly. | Rearrange the dishes. | Ensure dishes are placed correctly and do not obstruct the spray arms. |
| Spray arm is hitting dishes. | Adjust the position of the dishes. | Make sure the spray arms can rotate freely. | |
| Motor or pump is faulty. | Diagnose and replace the faulty component. | ||
| Leaks | Door seal is damaged. | Replace the door seal. | Inspect the door seal for any damage and replace if necessary. |
| Hose connections are loose. | Tighten the hose connections. | Check all hose connections for leaks and tighten them. |