LG MULTI V S ARUN038GSS4 - ERROR CODE TABLES; Indoor Unit Error Codes

67
Troubleshooting
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.
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
XQLWFRQWUROERDUGDQGRQWKHPDLQVFUHHQRIWKH/*0RQLWRULQJ9LHZ/*09'LDJQRVWLF
Software.
• ,IWZRRUPRUHHUURUVRFFXUVLPXOWDQHRXVO\WKHORZHUHUURUFRGHQXPEHULVGLVSOD\HG¿UVW
• After error is resolved, the error code does not display.
(UURU'LVSOD\
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.
(UURU&RGH1RPHQFODWXUH'HILQLWLRQV
• 0,&201RQYRODWLOHPHPRU\FKLSZKHUHXQLW
setup information is stored.
• (35201RQYRODWLOHPHPRU\FKLSZKHUH
device identification, size, and factory defined
default component operating parameters are
stored.
ERROR CODE TABLES
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.
2 1 1 c 1 1
Repeats
Compressor Error
Error No.
Unit
Error No. of Unit
([DPSOH
Error Code 'HVFULSWLRQ 'HWDLOV
Indoor Unit
01-
Indoor unit return air or optional remote wall tempera-
ture sensor communications error.
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.)
02-
Indoor unit inlet pipe temperature sensor communica-
tion error.
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.)
03-
Communication error between zone controller and
indoor unit.
Indoor unit PCB has not received communications signal from
zone controller.
0 4 - Indoor unit drain pump error.
Drain pump and/or flow switch is/are malfunctioning. Also check
drain line for obstructions.
05-
Communication error between outdoor unit and indoor
unit.
• Indoor unit has not received communications signal from out-
door unit.
• Check indoor unit to outdoor unit communication cable connec-
tions for issues.
0 6 - Indoor unit outlet pipe temperature sensor error.
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.)
09-,QGRRUXQLW(3520HUURU
• Communication error between the indoor unit PCB board and its
RSWLRQFDUG7KHRSWLRQFDUGLVDERXWƍ[ƍDQGLVSOXJJHGLQWR
the indoor unit PCB board. Check connection between the two.)
• &RPPXQLFDWLRQHUURUEHWZHHQ(3520FKLSVRQLQGRRUXQLW
main PCB.
• ,QGRRUXQLW(3520GDWDLVQRWDYDLODEOH
1 0 - Indoor unit BLDC fan motor communications error.
• )DQPRWRUKDVEHHQUHPRYHGRULVGHIHFWLYH8VHWKH2+0DQG
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.
• &KHFNWKHZLULQJSOXJDQGFRQQHFWLRQDWVRFNHWV&102725
DQG&102725LIXVHG
Outdoor Unit
2110DVWHURXWGRRUXQLWinverter compressor PCB error.
• Outdoor unit inverter compressor PCB error.
• Under voltage
• 5HIULJHUDQWÀRZUHVWULFWLRQIURPGHIHFWLYH/(9
• Refrigerant charge is too high (overcharge).
Table 46: Indoor Unit Error Codes.
For detailed information on how to troubleshoot each error, see the Multi V S Service Manual on www.lg-vrf.com.