128
MULTI V 5 Outdoor Unit Service Manual
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 Code Description Details
Outdoor Unit
211
Master outdoor unit inverter board IPM fault error;
Inverter driver detects overcurrent; Error code is deter-
mined by overcurrent in any one phase of compressor.
• Detected by the CT sensor on the IGBT PC board.
• Overcurrent in compressor UVW phases.
• Damaged compressor.
• Damaged IPM on inverter board.
• Compressor disconnected.
• Damaged inverter board – input voltage too low. For 208-
230V: On 068 compressors = 143A for a minimum of 3μs;
on 048 compressors = 96A for a minimum of 3μs. For 460V:
On 068 compressors = 80 A for a minimum of 3μs; On 048
compressors = 56A for a minimum of 3μs.
212
Slave1 outdoor unit inverter board IPM fault error;
Inverter driver detects overcurrent; Error code is deter-
mined by overcurrent in any one phase of compressor.
213
Slave2 outdoor unit inverter board IPM fault error;
Inverter driver detects overcurrent; Error code is deter-
mined by overcurrent in any one phase of compressor.
221
Master outdoor unit inverter PCB AC input overcurrent
(RMS) error.
• Overcurrent of outdoor unit inverter board PCB.
• Under voltage.
• Refrigerant flow restriction from defective EEV.
• Refrigerant charge is too high (overcharged).
222
Slave1 outdoor unit inverter PCB AC input overcurrent
(RMS) error.
223
Slave2 outdoor unit inverter PCB AC input overcurrent
(RMS) error.
231
Low DC voltage sensed at the master outdoor unit
inverter compressor DC link.
System shut off because the DC link voltage fell below 50V (for
both 208-230V and 460V units), or exceeded 550V (for 208-
230V units) or 1,000V (for 460V units) for a minimum of 250μs.
• Start diagnosis at the inverter socket on the outdoor unit noise
filter PCB.
• There is a capacitor that is not working properly, or the voltage
at the capacitor is out of range.
•
Disconnected DC link.
• Damaged electrical condenser component (serving capacitor)
on inverter driver board.
232
Low DC voltage sensed at the slave1 outdoor unit
inverter compressor DC link.
233
Low DC voltage sensed at the slave2 outdoor unit
inverter compressor DC link.
241
System has been turned off by the master outdoor unit
high pressure switch.
Master outdoor unit high pressure switch error.
• Check the connection on the outdoor unit PCB.
• Use chart in Troubleshooting section of the manual to check
signal output (V DC) versus actual pressure.
242
System has been turned off by the slave1 outdoor unit
high pressure switch.
Slave1 outdoor unit high pressure switch error.
• Check the connection on the outdoor unit PCB.
• Use chart in Troubleshooting section of the manual to check
signal output (V DC) versus actual pressure.
243
System has been turned off by the slave2 outdoor unit
high pressure switch.
Slave2 outdoor unit high pressure switch error.
• Check the connection on the outdoor unit PCB.
• Use chart in Troubleshooting section of the manual to check
signal output (V DC) versus actual pressure.
251
Input voltage to the master outdoor unit is too high or
too low.
0DVWHURXWGRRUXQLWKDVDQLQSXWYROWDJHRI9RU9
IRU9XQLWVRUDQLQSXWYROWDJHRI9RU9IRU
460V units).
252
Input voltage to the slave1 outdoor unit is too high or
too low.
6ODYHRXWGRRUXQLWKDVDQLQSXWYROWDJHRI9RU9
IRU9XQLWVRUDQLQSXWYROWDJHRI9RU9IRU
460V units).
253
Input voltage to the slave2 outdoor unit is too high or
too low.
6ODYHRXWGRRUXQLWKDVDQLQSXWYROWDJHRI9RU9
IRU9XQLWVRUDQLQSXWYROWDJHRI9RU9IRU
460V units).
2 6 1 Master outdoor unit inverter compressor operation error.
Inverter compressor failed to start.2 6 2 Slave1 outdoor unit inverter compressor operation error.
2 6 3 Slave2 outdoor unit inverter compressor operation error.
2 9 1 Master outdoor unit inverter compressor overcurrent error.
• Outdoor unit inverter compressor current draw is too high.
• Compressor defect and restriction in refrigerant piping are
possible causes.
2 9 2 Slave1 outdoor unit inverter compressor overcurrent error.
2 9 3 Slave2 outdoor unit inverter compressor overcurrent error.
Table 70: Error Codes, continued.
ERROR CODE TABLES
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.
To Next Page
Loading...
Need help?
General
