Error No. 104 - LG Multi V5 Service Manual

ERROR CODES

Error No. 104

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
104
Communication
error between
Master: 1041 master outdoor
unit and slave
Slave 1: 1042
outdoor units.
Slave 2: 1043
Is the communication
cable installed correctly?
Is (are) the slave
outdoor unit(s) DIP switch
setting(s) correct?
Is the main PCB power on?
Replace main PCB.
Check if shielded wiring is
Check if GND wire is connect-
ed to the chassis.
Confirm whether wiring
A and B are connected prop-
182
Master unit displays outdoor unit number that
has not been transmitting; slave unit displays
its own error number.
No
Yes
No
Yes
No
Yes
No
used.
Yes
No
Yes
No
erly.
Due to our policy of continuous product innovation, some specifications may change without notification.
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Details
1. Power wiring / communication cable
2. Outdoor unit main PCB is defective.
Connect communication cable.
Check the DIP switch settings and change if
necessary.
Connect power wiring.
1. Push the reset button (a communication error
may have occurred).
2. If the main cause is noise, change to a shield-
ed communication wire.
Connect GND wire with chassis. (If not connect-
ed, a communication error may have occurred.)
Connect A and B properly. (When connecting
the communication lines for the outdoor unit(s),
do not mix communication line A with B.)
Causes
connections are loose. (Connections have
disconnected or have shorted out).