LG VRF Error Codes – Multi V
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 unit control board, and on the main screen of the LG Monitoring View (LGMV) Diagnostic Software.
- If two or more errors occur simultaneously, the lower error code number is displayed first.
- After error is resolved, the error code does not display.
Error Display;
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, Error No. 105 on master unit on compressor 1.
Error Code Nomenclature Definitions;
- MICOM: Non-volatile memory chip where unit setup information is stored.
- EPROM: Non-volatile memory chip where device identification, size, and factory defined default component operating parameters are stored.
| Error Codes | Description |
|---|---|
| 01 | Indoor unit return air or optional remote wall temperature sensor communications error |
| 02 | Indoor unit inlet pipe temperature sensor communication error |
| 03 | Communication error between zone controller and indoor unit |
| 04 | Condensate float switch error |
| 05 | Communication error between outdoor unit and indoor unit |
| 06 | Indoor unit outlet pipe temperature sensor error |
| 07 | Indoor units are not operating in the same mode |
| 09 | Indoor unit EPROM error |
| 10 | Indoor unit BLDC fan motor communications error |
| 211 | Master outdoor unit inverter compressor PCB error |
| 212 | Slave1 outdoor unit inverter compressor PCB error |
| 213 | Slave2 outdoor unit inverter compressor PCB error |
| 221 | Master outdoor unit inverter board input overcurrent (RMS) error |
| 222 | Slave1 outdoor unit inverter board input overcurrent (RMS) error |
| 223 | Slave2 outdoor unit inverter board input overcurrent (RMS) error |
| 231 | Low DC voltage sensed at the master outdoor unit inverter compressor DC link |
| 232 | Low voltage to the slave1 outdoor unit inverter compressor DC link |
| 233 | Low voltage to the slave2 outdoor unit inverter compressor DC link |
| 241 | Master outdoor unit high pressure switch error |
| 242 | Slave1 outdoor unit high pressure switch error |
| 243 | Slave2 outdoor unit high pressure switch error |
| 251 | Input voltage to the master outdoor unit is too high or too low |
| 252 | Input voltage to the slave1 outdoor unit is too high or too low |
| 253 | Input voltage to the slave2 outdoor unit is too high or too low |
| 261 | Master outdoor unit inverter compressor operation error |
| 262 | Slave1 outdoor unit inverter compressor operation error |
| 263 | Slave2 outdoor unit inverter compressor operation error |
| 281 | Master outdoor unit inverter DC link high voltage error |
| 282 | Slave1 outdoor unit inverter DC link high voltage error |
Error Code: 283
Description: Slave2 outdoor unit inverter DC link high voltage error
Error Code: 291
Description: Master outdoor unit inverter compressor overcurrent error
Error Code: 292
Description: Slave1 outdoor unit inverter compressor overcurrent error
Error Code: 293
Description: Slave2 outdoor unit inverter compressor overcurrent error
Error Code: 321
Description: Excessive increase in master outdoor unit inverter com- pressor1 gas discharge temperature
Error Code: 322
Description: Excessive increase in slave1 outdoor unit inverter com- pressor1 gas discharge temperature
Error Code: 323
Description: Excessive increase in slave2 outdoor unit inverter com- pressor1 gas discharge temperature
Error Code: 331
Description: Excessive increase in master outdoor unit inverter com- pressor2 gas discharge temperature
Error Code: 332
Description: Excessive increase in slave1 outdoor unit inverter com- pressor2 gas discharge temperature
Error Code: 333
Description: Excessive increase in slave2 outdoor unit inverter com- pressor2 gas discharge temperature
Error Code: 341
Description: Master outdoor unit compressor high pressure safety tripped
Error Code: 342
Description: Slave1 outdoor unit compressor high pressure safety tripped
Error Code: 343
Description: Slave2 outdoor unit compressor high pressure safety tripped
Error Code: 351
Description: Master outdoor unit low side pressure transducer sens- es pressure below allowable limits
Error Code: 352
Description: Slave1 outdoor unit low side pressure transducer sens- es pressure below allowable limits
Error Code: 353
Description: Slave1 outdoor unit low side pressure transducer sens- es pressure below allowable limits
Error Code: 361
Description: Master outdoor unit fell below low condenser (compression) ratio limit
Error Code: 362
Description: Slave1 outdoor unit fell below low condenser (compression) ratio limit
Error Code: 363
Description: Slave2 outdoor unit fell below low condenser (com- pression) ratio limit
Error Code: 401
Description: Master outdoor unit inverter compressor current trans- ducer (CT) sensor error
Error Code: 402
Description: Slave1 outdoor unit inverter compressor current trans- ducer (CT) sensor error
Error Code: 403
Description: Slave2 outdoor unit inverter compressor current trans- ducer (CT) sensor error
Error Code: 411
Description: Master outdoor unit inverter compressor1 discharge pipe temperature sensor error
Error Code: 412
Description: Slave1 outdoor unit inverter compressor1 discharge pipe temperature sensor error
Error Code: 413
Description: Slave2 outdoor unit inverter compressor1 discharge pipe temperature sensor error.
Error Code: 421
Description: Master outdoor unit low pressure transducer error
Error Code: 422
Description: Slave1 outdoor unit low pressure transducer error
Error Code: 423
Description: Slave2 outdoor unit low pressure transducer error
Error Code: 431
Description: Master outdoor unit high pressure transducer error
Error Code: 432
Description: Slave1 outdoor unit high pressure transducer error
Error Code: 433
Description: Slave2 outdoor unit high pressure transducer error
Error Code: 441
Description: Master outdoor unit ambient temperature sensor error
Error Code: 442
Description: Slave1 outdoor unit ambient temperature sensor error
Error Code: 443
Description: Slave2 outdoor unit ambient temperature sensor error
Error Code: 451
Description: Master outdoor unit heat exchanger pipe temperature sensor (front side, TH_HEX2) error
Error Code: 452
Description: Slave1 outdoor unit heat exchanger pipe temperature sensor (front side, TH_HEX2) error
Error Code: 453
Description: Slave2 outdoor unit heat exchanger pipe temperature sensor (front side, TH_HEX2) error
Error Code: 461
Description: Master outdoor unit suction pipe temperature sensor error
Error Code: 462
Description: Slave1 outdoor unit suction pipe temperature sensor error
Error Code: 463
Description: Slave2 outdoor unit suction pipe temperature sensor error
Error Code: 471
Description: Master outdoor unit inverter compressor2 discharge temperature sensor error
Error Code: 472
Description: Slave1 outdoor unit inverter compressor2 discharge temperature sensor error
Error Code: 473
Description: Slave2 outdoor unit inverter compressor2 discharge temperature sensor error
Error Code: 491
Description: Master outdoor unit IPM temperature sensor error
Error Code: 492
Description: Slave1 outdoor unit IPM temperature sensor error
Error Code: 493
Description: Slave2 outdoor unit IPM temperature sensor error
Error Code: 501
Description: Master outdoor unit three-phase power is not connected properly
Error Code: 502
Description: Slave1 outdoor unit three-phase power is not connected properly
Error Code: 503
Description: Slave2 outdoor unit three-phase power is not connected properly
Error Code: 511
Description: Combination ratio is out of range
Error Code: 512
Description: Total indoor unit capacity exceeds allowable heat recovery unit branch capacity
Error Code: 521
Description: Communication error between master outdoor unit inverter PCB and main PCB
Error Code: 522
Description: Communication error between slave1 outdoor unit inverter PCB and main PCB
Error Code: 523
Description: Communication error between slave2 outdoor unit inverter PCB and main PCB
Error Code: 531
Description: Communication error between outdoor unit main PCB and indoor unit(s) PCB
Error Code: 541
Description: Master outdoor unit power error
Error Code: 542
Description: Slave1 outdoor unit power error
Error Code: 543
Description: Slave2 outdoor unit power error
Error Code: 571
Description: Master outdoor unit main PCB and inverter PCB communication error
Error Code: 572
Description: Slave1 outdoor unit main PCB and inverter PCB communication error
Error Code: 573
Description: Slave2 outdoor unit main PCB and inverter PCB communication error
Error Code: 591
Description: Outdoor unit series installation error
Error Code: 601
Description: Master outdoor unit inverter PCB EPROM error
Error Code: 602
Description: Slave1 outdoor unit inverter PCB EPROM error
Error Code: 603
Description: Slave2 outdoor unit inverter PCB EPROM error
Error Code: 621
Description: High temperature at the master outdoor unit inverter heatsink
Error Code: 622
Description: High temperature at the slave1 outdoor unit inverter heatsink
Error Code: 623
Description: High temperature at the slave2 outdoor unit inverter heatsink
Error Code: 651
Description: Master outdoor unit inverter heatsink temperature sensor error
Error Code: 652
Description: Slave1 outdoor unit inverter heatsink temperature sensor error
Error Code: 653
Description: Slave2 outdoor unit inverter heatsink temperature sensor error
Error Code: 671
Description: Master outdoor unit fan has locked up
Error Code: 672
Description: Slave1 outdoor unit fan has locked up
Error Code: 673
Description: Slave2 outdoor unit fan has locked up
Error Code: 711
Description: Master outdoor unit converter CT sensor error
Error Code: 712
Description: Slave1 outdoor unit converter CT sensor error
Error Code: 713
Description: Slave2 outdoor unit converter CT sensor error
Error Code: 751
Description: Master outdoor unit fan CT sensor error
Error Code: 752
Description: Slave1 outdoor unit fan CT sensor error
Error Code: 753
Description: Slave2 outdoor unit fan CT sensor error
Error Code: 761
Description: Master outdoor unit fan DC link high voltage error
Error Code: 762
Description: Slave1 outdoor unit fan DC link high voltage error
Error Code: 763
Description: Slave2 outdoor unit fan DC link high voltage error
Error Code: 771
Description: Master outdoor unit fan overcurrent error
Error Code: 772
Description: Slave1 outdoor unit fan overcurrent error
Error Code: 773
Description: Slave2 outdoor unit fan overcurrent error
Error Code: 791
Description: Master outdoor unit fan operation failure error
Error Code: 792
Description: Slave1 outdoor unit fan operation failure error
Error Code: 793
Description: Slave2 outdoor unit fan operation failure error
Error Code: 861
Description: Master outdoor unit main PCB onboard EPROM error
Error Code: 862
Description: Slave1 outdoor unit main PCB onboard EPROM error
Error Code: 863
Description: Slave2 outdoor unit main PCB onboard EPROM error
Error Code: 871
Description: Master outdoor unit fan PCB EPROM error
Error Code: 872
Description: Slave1 outdoor unit fan PCB EPROM error
Error Code: 873
Description: Slave2 outdoor unit fan PCB EPROM error
Error Code: 1041
Description: Communication error between master outdoor unit and slave outdoor units
Error Code: 1042
Description: Communication error between slave1 outdoor unit and master and slave2 outdoor units
Error Code: 1043
Description: Communication error between slave2 outdoor unit and master and slave1 outdoor units
Error Code: 1051
Description: Master outdoor unit fan PCB to compressor PCB communication error
Error Code: 1052
Description: Slave1 outdoor unit fan PCB to compressor PCB communication error
Error Code: 1053
Description: Slave2 outdoor unit fan PCB to compressor PCB communication error
Error Code: 1061
Description: Master outdoor unit fan IPM error
Error Code: 1062
Description: Slave1 outdoor unit fan IPM error
Error Code: 1063
Description: Slave2 outdoor unit fan IPM error
Error Code: 1071
Description: Master outdoor unit fan DC link low voltage error
Error Code: 1072
Description: Slave1 outdoor unit fan DC link low voltage error
Error Code: 1073
Description: Slave2 outdoor unit fan DC link low voltage error
Error Code: 1131
Description: Master outdoor unit liquid pipe temperature sensor error
Error Code: 1132
Description: Slave1 outdoor unit liquid pipe temperature sensor error
Error Code: 1133
Description: Slave2 outdoor unit liquid pipe temperature sensor error
Error Code: 1141
Description: Master outdoor unit subcooling inlet temperature sensor error
Error Code: 1142
Description: Slave1 outdoor unit subcooling inlet temperature sensor error
Error Code: 1143
Description: Slave2 outdoor unit subcooling inlet temperature sensor error
Error Code: 1151
Description: Master outdoor unit subcooling outlet temperature sensor error
Error Code: 1152
Description: Slave1 outdoor unit subcooling outlet temperature sensor error
Error Code: 1153
Description: Slave2 outdoor unit subcooling outlet temperature sensor error
Error Code: 1161
Description: Master outdoor unit oil level sensor error
Error Code: 1162
Description: Slave1 outdoor unit oil level sensor error
Error Code: 1163
Description: Slave2 outdoor unit oil level sensor error
Error Code: 1451
Description: Communication error between master outdoor unit main board and external board
Error Code: 1452
Description: Communication error between slave1 outdoor unit main board and external board
Error Code: 1453
Description: Communication error between slave2 outdoor unit main board and external board
Error Code: 1511
Description: Master outdoor unit operation mode conversion error
Error Code: 1512
Description: Slave1 outdoor unit operation mode conversion error
Error Code: 1513
Description: Slave2 outdoor unit operation mode conversion error
Error Code: 1531
Description: Master outdoor unit upper heat exchanger temperature sensor error
Error Code: 1532
Description: Slave1 outdoor unit upper heat exchanger temperature sensor error
Error Code: 1533
Description: Slave2 outdoor unit upper heat exchanger temperature sensor error
Error Code: 1541
Description: Master outdoor unit lower heat exchanger temperature sensor error
Error Code: 1542
Description: Slave1 outdoor unit lower heat exchanger temperature sensor error
Error Code: 1543
Description: Slave2 outdoor unit lower heat exchanger tempera- ture sensor error
Error Code: 1821
Description: Communication error between master outdoor unit external board main and sub MICOMs
Error Code: 1822
Description: Communication error between slave1 outdoor unit external board main and sub MICOMs
Error Code: 1823
Description: Communication error between slave2 outdoor unit external board main and sub MICOMs
Error Code: 1931
Description: Excessive increase in master outdoor unit fan heatsink temperature
Error Code: 1932
Description: Excessive increase in slave1 outdoor unit fan heat- sink temperature
Error Code: 1933
Description: Excessive increase in slave2 outdoor unit fan heat- sink temperature
Error Code: 1941
Description: Master outdoor unit fan heatsink temperature sensor error
Error Code: 1942
Description: Slave1 outdoor unit fan heatsink temperature sensor error
Error Code: 1943
Description: Slave2 outdoor unit fan heatsink temperature sensor error
Error Code: 2001
Description: Valve addressing error
Error Code: 2011
Description: Heat recovery unit liquid sensor error.
Error Code: 2021
Description: Heat recovery unit subcooling pipe inlet sensor error
Error Code: 2031
Description: Heat recovery unit subcooling pipe outlet sensor error
Error Code: 2041
Description: Communication error between outdoor unit and heat recovery unit
Error Code: 2051
Description: Communication error between heat recovery unit and the 485 modem
Error Code: 2061
Description: Duplicate address error of the heat recovery unit
Error Code: 51
Description: Capacity of indoor units connected to the heat recovery unit exceeds allowable limits
Note: To use open line 485 communication (9,600 bps communication), you need to use a product that is compatible with all of the “Generation 4” versions of the indoor units, heat recovery units, outdoor units, and accessories.
Q&A
-Error Code: CH50
Description: Outdoor unit three-phase power is not connected properly.
Details: One or more of R(L1), S(L2), T(L3) input power line connections is / are missing for the outdoor unit.
Causes:
1. Input voltage is not correct R(L1), S(L2), T(L3).
2. Power line connections may not be correct.
3. Main PCB may be damaged.
4. Inverter PCB input current sensor error.
*PLEASE SEND ME ANY COMMENT, SUGGESTION OR CORRECTION YOU MAY HAVE.
Lg multi v error 1501 1
Dear Admin,
I have a very strange problem with my LG multi V 4 AC with error 52 on the outdoor unit slave 3.
I’ve tried swapping all PCB board spare parts including jumper cables, between slave 2 (good condition) and salve 3 (error 25)
The result is still error 52 on the slave 3 unit if all the PCBs and jumper cables are installed in the slave 3 unit. Meanwhile, all the PCBs and jumper cables coming from slave 3 if installed on slave 2 the results are normal
What else should I check? Or what is the possible cause of error 52? I can confirm that none of the PCBs or jumper wires are damaged.
Please help me. Thank alot
Hi,
the error code is 263 in outdoor unit. what could be the cause.
Hello sir
My lg vrf multi v 5 is showing 1501 error code what is the problem creating the system
511 error code combination ratio is out of range please tell me what is the problem is this error meaning
Lg Malti V 4 vrf system erorr code 531 on the outdoor main pcb plz talk as how to solved this code
I’m getting 501 error code but my power supply is intact ( reading for both 3 phase line are equal
CH50 mean
Description: Outdoor unit three-phase power is not connected properly.
Details: One or more of R(L1), S(L2), T(L3) input power line connections is / are missing for the outdoor unit.
Causes:
1. Input voltage is not correct R(L1), S(L2), T(L3).
2. Power line connections may not be correct.
3. Main PCB may be damaged.
4. Inverter PCB input current sensor error.
Suggestion: Please check R, S, T connection (open the bolt – clean – reinstall) maybe have some corrosion. If no corrosion check the phase using phase checker, maybe wrong R-S-T order .
It’s good
send me vrf ac lg code
Error Code: 1042
Description: Communication error between slave1 outdoor unit and master and slave2 outdoor units
How to fix this? must send aircon back to LG center?
Sir hammer outdoor me 621 error code a reha hai kya problem ho sakti hair.
Hi, LG VRF 621 Error Mean:
Inverter PCB Heatsink Temperature High, Heatsink Temperature is Over 90°C. Reasons: 1. Inverter PCBA IPM Connection Condition Abnormal 2. Outdoor Unit Fan Motor Operation Abnormal 3. Outdoor Unit Inverter PCB Assembly Defect 4. Overload Operation (Pipe Clogging/ Covering/EEV Defect/Ref. Overcharge)
Error 511 combination ration is out of range what is the meaning of that
Hi, thanks for asking.
Value of total indoor unit capacity exceeds allowable outdoor unit capacity specifications. Cause: 1. Total indoor unit capacity is more than 130% outdoor unit rated capacity. 2. Wrong transmission cable / piping connections. 3. Control error of slave outdoor unit DIP switches. 4. Defective slave unit PCB power supply. 5. Outdoor unit PCB is defective.
Thermostat showing CH50. Pls help to solve
Hi, Thank you for asking.
Error Code: CH50
Description: Outdoor unit three-phase power is not connected properly.
Details: One or more of R(L1), S(L2), T(L3) input power line connections is / are missing for the outdoor unit.
Causes:
1. Input voltage is not correct R(L1), S(L2), T(L3).
2. Power line connections may not be correct.
3. Main PCB may be damaged.
4. Inverter PCB input current sensor error.
Good morning.pls help me LG murlty vrv CH11.
hallow have also got this error in kenya
Please let me know code error 262 in VRF LG
error ch242 Ihave 21 A/C broken .What is the breakdown?
Lg multi v …outdoor error 691 coming what Is the issu..plz answer me
Our Lg Multi V Thermostat Display Showing 53 Error Codes I Already Check Three Phase Volt Also Everthing Ok What Is The Solution.
I have a LG MultiV AURN200LN3,showing error code CH50,any idea what is it.Tried google for clues but seems google is clueless on this one.
Same. Any answers?
Hi, Thank you for asking.
CH50 mean
Description: Outdoor unit three-phase power is not connected properly.
Details: One or more of R(L1), S(L2), T(L3) input power line connections is / are missing for the outdoor unit.
Causes:
1. Input voltage is not correct R(L1), S(L2), T(L3).
2. Power line connections may not be correct.
3. Main PCB may be damaged.
4. Inverter PCB input current sensor error.
lg multi v 111 model no arun 200lt3 If u put indoors on the outdoor wiill run for about 3 minutes cut off then indoors wii start blinking and put error CH 174 on the controller
i have question to ask
Tenho 4 aparelhos apresentando o código ch 242 como devo proceder?
Please Help
I have one equipmente MULTIV LG PLUS II , and I have error code 271.
Please wath is te procedure to fix
Thanks
LG multi V error cosas 2 5 1
Hi i have a problem in multisplit v3 212 error code how can i rectify it
Please explain lg malti v 3rd outdoor error code 731 and 741
Wow, I have had to set up every LG VRF T’stat myself as the owner, because;
1) One must never use BACnet into any VRF System _ values are never the same and corruptions occur. *the Touchscreen Event Log shows a NONE user making changes, which we found was the VRT’s. Why? Who Knows, because their top techs do not.
2) If you have a Touchscreen, you will find a very similar problem, in that what you see and can control on the Touchscreen, again does not match the Thermostat settings, so only use for changing Lock Out and possibly Setpoint.
3) We have instructed our Service Tech’s to perform all Service Work & troubleshooting at the Thermostat, since it is what is actually controlling the local VRF.
4) If local Thermostat Service ERROR Codes show up, have fun trying to figure out what they mean. I could find nothing online. Only info I received was from a Tech’s Software Screenshot.
Educational and help me a lot to find a trouble of aircon tnx.LG
Error CH 1 06 in LG MULTI V PLUS II outdor unit ,what is the cause and solution to that?
In lg vrv5 in odu display it’s showing SUC why it’s showing and what is the solution
Working on multi v plus 11 units,not starting at all even the ceiling concealed units not working though there is power.I can’t access the Ac smart controllers as I don’t have the password,2 outdoor units,master and slave,what could be the problem
Good day, I have problem on multi v out door until. Error code in outdoor C12 and 262., and until is not running… Thanks
My LG Multi V One Indoor Display Showing Error CH53 may I know about CH53
reset breaker put it on
LG casste ac in door unit in not air fllow
Very nice
Lg multi v iv error in odu c 1, 62 ?
Hi . The code is Ch-04 .
Can I rectify the problem myself or
Must I call someone in .
LG aircon unit
Multi V
hello ım from koppel, ınc.
ı want to help you.
ıf the problem ıs ın the ındoor check the draın pump may ıt ıs clogged
or ıf there ıs float swıtch you can also check that one.
but make sure that ur system ıs clean.
Air conditioning
error code ch 04 is Drain PumP Malfungtion,
Lg ductebal unit fan motors.noice problems
Ch 10 error display
l want to lg vrv error code throughlt
Hi the error code is ch.54.1 what could be the cause?
Over unit remote reservation indition is seen so please suggest what could be the problem. Thanks