Error No. 145 - 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
145
Communication
error between
Master: 1451 outdoor unit main
PCB and external
Slave 1: 1452
PCB.
Slave 2: 1453
Is the yellow communica-
tion LED of the external PCB
Is the communication cable
connected correctly?
Is the main PCB function-
ing normally?
Replace external PCB.
If the signal between the main PCB and the external PCB is normal, the communication LED on the external PCB blinks.
Details
Cycle controller of outdoor unit PCB is not
receiving signal from the external PCB.
No
on?
Yes
No
Yes
No
Yes
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ERROR CODES
1. Power wiring and / or communication cables
is / are not connected.
2. Outdoor cycle controller / external PCB is /
are defective.
Re-connect power wiring.
Re-connect communication cable.
Replace main PCB.

Error No. 145

Causes
191