Error No. 237 - LG Multi V5 Service Manual

ERROR CODES

Error No. 237

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
WARNING
troubleshooting of the Multi V product.
Error No. Description
Communication
error between
237 outdoor unit PCB
and indoor unit
PCB.
Is the outdoor unit powered?
Has the auto address-
ing procedure been per-
Is the communication cable
connected correctly?
communication module oper-
See also Error Code No. 05: Indoor Unit PCB Communication Error between Outdoor Unit and Indoor Unit, and Error Code No. 238: Outdoor Unit
PCB Communication Error Between Indoor Unit and Outdoor Unit.
206
Indoor unit communications PCB is not receiv-
ing signal from outdoor unit communications
PCB for more than 3 minutes. Check RS-485
communications for issues.
Yes
formed?
Yes
Is the outdoor unit
ating properly?
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.
Details
1. Check if the outdoor unit has been powered
2. Check communication cable.
3. Check outdoor unit communication mod-
No
Turn on power to the outdoor unit.
No
Perform the auto addressing procedure.
Verify that it was successful with no errors.
1. Check the communication cable between
outdoor unit and indoor unit. Reconnect
communication cable.
No
2. Check if communication cable / con-
nections are properly installed and / or
damaged. Replace communication cable
/ connections if necessary.
No
Check if outdoor unit communication
module installation and connections are
correct; if not reconnect and / or reinstall.
Causes
and if auto addressing has occurred.
ule.