Troubleshooting Guide
52 TROUBLESHOOTING
Problem Possible Cause Solutions
Dishwasher chimes if 
panel is touched during 
operation.
Bumping into or touching the control 
panel during operation may result in a 
disabled button sound. Only the Power, 
Start, and Control Lock buttons are 
enabled during operation to prevent 
cycle settings from being changed 
inadvertently.
 • Button sounds can be turned off by 
pressing and holding Half Load for three 
seconds.
 • The end of cycle chime and safety alert 
sounds will still sound.
Dishwasher did not nish 
cycle.
Door was opened during cycle.
 • If the door is opened during a cycle, 
the Start key must be pressed within 4 
minutes or the machine turns off and all 
settings are lost.
Leaking in front of unit
Dishwasher not leveled properly.
 • Verify the unit is level from side to side 
and from front to back. See leveling 
instructions in the Installation section.
Wrong detergent used.
 • If excessive sudsing is causing the leak, 
allow the foam to subside for 24 hours 
then clean the inside of the tub with milk.
Your home appliance 
and smartphone is not 
connected to the Wi-Fi 
network.
The password for the Wi-Fi that you are 
trying to connect to is incorrect.
 • Find the Wi-Fi network connected 
to yoursmartphone and remove it, 
then registeryour appliance on LG 
SmartThinQ.
Mobile data for your smartphone is 
turned on.
 • Turn off the Mobile data of your 
smartphone and register the appliance 
using the Wi-Finetwork.
The wireless network name (SSID) is 
set incorrectly.
 • The wireless network name (SSID) 
shouldbe a combination of English 
letters andnumbers. (Do not use special 
characters.)
The router frequency is not 2.4 GHz.
 • Only a 2.4 GHz router frequency 
issupported. Set the wireless router 
to2.4 GHz and connect the appliance 
tothe wireless router. To check the 
routerfrequency, check with your 
Internet serviceprovider or the router 
manufacturer.
The distance between the appliance 
and the router is too far.
 • If the distance between the appliance 
andthe router is too far, the signal may 
be weakand the connection may not be 
conguredcorrectly. Move the location 
of the router sothat it is closer to the 
appliance.
P1, P2, P3, or P4 appears 
in display.
The Download cycle is selected.
 • This is not an error code. This code 
indicates the current Download cycle.
n:#, U:#, d:#, t# appearsin 
display. 
(# = a number)
Test mode is selected.
 • This is not an error code. This code 
is used when testing the dishwasher. 
Power the unit off and on and the code 
will disappear.
L0, L1, L2, L3 or L4 
appears in display.
Rinse Aid Level setting mode is 
selected.
 • This is not an error code. This code 
indicates the current rinse aid level. For 
more information, refer to the Adding 
Cleaning Agents section.
CL appears in display. Control Lock is activated.
 • This is not an error code. This code 
indicates that the control lock is 
activated. Press and hold Half Load and 
Energy Saver simultaneously for three 
seconds.







