Error No. 206 C - LG Multi V5 Service Manual

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
Duplicate address
error of the heat
Heat Recovery Unit recovery unit (2A
Series).
1. Check if the rotary switch settings on each heat recovery unit PCB are set correctly. If not, set the rotary switches again, verifying that the
settings are different on the different heat recovery units.
2. Reset the outdoor unit and the power of the heat recovery unit so that the updated rotary switch settings are applied / saved to the sys-
tem.
3. After Step No. 2 is complete, perform auto addressing again.
4. If the error occurs again even after auto addressing is complete, replace the corresponding heat recovery PCB.
• Error Code 206C only occurs on heat recovery units with a 485 modem (2A Series heat recovery units; 9,600 bps communication).
• Refer to the outdoor unit installation manual for heat recovery unit rotary switch address settings.
485 Modem on 2A Series Heat Recovery Units
Details
The heat recovery unit address is duplicated for
485 communication (2A Series Heat Recovery
Units).
• The 2A Series heat recovery unit applies only
to heat recovery systems communicating at a
baud rate of 9,600 bps.
• The 485 modem is the communications style on
the bus that is 1e outdoor unit to many indoor
units.
Due to our policy of continuous product innovation, some specifications may change without notification.
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ERROR CODES

Error No. 206 C

Causes
1. A heat recovery unit address is duplicated
for 485 communication.
2. There are two heat recovery units with
one or more HEX addresses that are the
same.
3. Adjust the HEX address dial found on the
heat recovery units (error of the rotary
switch address settings on the heat recov-
ery unit).
4. The power wiring and / or the communica-
tion cable connection of the heat recovery
unit is defective.
5. The heat recovery unit PCB is defective.
205