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LG Multi V5 Service Manual

LG Multi V5
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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.
CHECKING MAIN PCB DC VOLTAGE
IN CASE OF POWER ON
Figure 81: Checking Main PCB DC Voltage (SMPS Voltage).
Checking Main PCB DC Voltage
Red
Black
Figure 82: Multi-Meter (Note the
Probe Color).
Vdc
5.0V
Vdc
12.0V
Vdc
12.0V
Vdc
5.0V
Main
Ext.
Comm
1 2 3 4 5 6
GND1 5V
Main
Ext.
2 1
4 3
6 5
8 7
9
10
1112
1314
1516
1718
1920
2122
2324
2324
2526
2728
GND2
5V
Table 91: Main PCB DC Voltage (SMPS Voltage) Measurements.
Check Mode
Multi-Meter Measured Value
Black Red Normal Abnormal
Main Ext.
5V
DC
GND2
5V 4.5V~5.5V 9Ļ
12V 12V 11.5V~12.5V 9Ļ
Comm.
5V
GND3
5V 4.5V~5.5V 9Ļ
12V 12V 11.5V~12.5V 9Ļ
Use caution when measuring the voltage; GND is separated. There is risk of electric shock, and physical injury or death.
WARNING
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

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LG Multi V5 Specifications

General IconGeneral
Compressor TypeInverter Scroll
RefrigerantR410A
Energy EfficiencyHigh
Heat RecoveryAvailable
Smart DiagnosisYes
TypeVRF (Variable Refrigerant Flow)
ControlCentralized Control
Power Supply380-415V / 3Ph / 50Hz

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