Error Code Tables - LG MULTI V S ARUN038GSS4 Installation Manual

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 S product.
Error Codes
• Indicate different types of unit failures, assist in self-diagnosis and to track the frequency
of occurrence.
• Error codes are shown on the LED of indoor units, wired remote controller, the outdoor
Software.
•
• After error is resolved, the error code does not display.
2 1 1 c 1 1
Unit
Error No.
Table 46: Indoor Unit Error Codes.
Error Code
Indoor unit return air or optional remote wall tempera-
0 1 -
ture sensor communications error.
Indoor unit inlet pipe temperature sensor communica-
0 2 -
tion error.
- Communication error between zone controller and
0 3
indoor unit.
0 4 - Indoor unit drain pump error.
- Communication error between outdoor unit and indoor
0 5
unit.
0 6 - Indoor unit outlet pipe temperature sensor error.
0 9 -
1 0 - Indoor unit BLDC fan motor communications error.
2 1 1
For detailed information on how to troubleshoot each error, see the Multi V S Service Manual on www.lg-vrf.com.
Repeats
Error No. of Unit
Compressor Error
inverter compressor PCB error.
Due to our policy of continuous product innovation, some specifications may change without notification.
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ERROR CODE TABLES

The first, second, and third number on the LED
indicates error number; the fourth number on
LED indicates outdoor unit number.
Examples: 211 = Error No. 21 on master unit,
213 = Error No. 21 on slave2 unit, 21051 = Error
No. 105 on master unit.
•
setup information is stored.
•
device identification, size, and factory defined
default component operating parameters are
stored.
Indoor unit air temperature sensor has disconnected or short
circuited. (Check the wiring, connection at the CN Room socket
on the indoor unit PCB, then check the thermistor.)
Indoor unit inlet pipe temperature sensor has disconnected or
short circuited. (Check the connection at the CN-PIPE/IN socket
on the indoor unit PCB, then check the thermistor.)
Indoor unit PCB has not received communications signal from
zone controller.
Drain pump and/or flow switch is/are malfunctioning. Also check
drain line for obstructions.
• Indoor unit has not received communications signal from out-
door unit.
• Check indoor unit to outdoor unit communication cable connec-
tions for issues.
Indoor unit outlet pipe temperature sensor has disconnected or
short circuited. (Check the connection at the CN-PIPE/OUT sock-
et on the indoor unit PCB, then check the thermistor.)
• Communication error between the indoor unit PCB board and its
the indoor unit PCB board. Check connection between the two.)
•
main PCB.
•
•
voltage check charts in the product service manual.
• The system has detected the fan motor is not spinning.
• On new installs, verify installation manual and paperwork were
removed from fan discharge shroud before unit was installed.
•
• Outdoor unit inverter compressor PCB error.
• Under voltage
•
• Refrigerant charge is too high (overcharge).
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