207
Error Codes
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
See also Error Code No. 05: Indoor Unit PCB Communication Error between Outdoor Unit and Indoor Unit, and Error Code No. 237: RS-485 Com-
munication Error Between Indoor Unit and Outdoor Unit.
ERROR CODES
Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
troubleshooting of the Multi V product.
WARNING
Error No. 238
Error No. Description Details Causes
238
Communication
error between
outdoor unit PCB
and indoor unit
PCB.
Indoor unit communications PCB is not receiv-
ing signal from outdoor unit communications
PCB for more than 3 minutes. Check outdoor
unit PCB communications for issues.
1. Check if the outdoor unit has been powered
and if auto addressing has occurred.
2. Check communication cable.
3. Check outdoor unit PCB.
Is the outdoor unit powered?
Turn on power to the outdoor unit.
No
Yes
Has the auto address-
ing procedure been per-
formed?
No
Perform the auto addressing procedure.
Verify that it was successful with no errors.
Is the outdoor unit
communication PCB operat-
ing properly?
Yes
No
Check if outdoor unit communication
PCB installation and connections are
correct; if not reconnect and / or reinstall.
1. Check the communication cable between
outdoor unit and indoor unit. Reconnect
communication cable.
2. Check if communication cable / con-
nections are properly installed and / or
damaged. Replace communication cable
/ connections if necessary.
Is the communication cable
connected correctly?
No
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