LG Art Cool™ Mirror High-Efficiency Single Zone Systems Common Error Codes
Applicable Systems
This document details common error codes for the following LG Art Cool™ Mirror High-Efficiency Single Zone Systems:
- LA180HSV System (Indoor Units: LAN180HSV, Outdoor Units: LAU180HSV)
- LA240HSV System (Indoor Units: LAN240HSV, Outdoor Units: LAU240HSV)
Indoor Unit Error Codes
The indoor unit features indicator lights, including POWER, PLASMA, and PREHEATING. The location of these light-emitting diodes (LEDs) is shown, with LED1 and LED2 indicating status.
| Error Code | Description | No. of Times Indoor Unit LEDs Blink (LED1 - Plasma LED) | No. of Times Indoor Unit LEDs Blink (LED2 - Power LED) |
|---|---|---|---|
| 1 | Indoor unit return air thermistor is disconnected or is shorted out. | 1X | -- |
| 2 | Indoor unit inlet pipe thermistor is disconnected or is shorted out. | 2X | -- |
| 5 | Communication failure from indoor unit to outdoor unit. | 5X | -- |
| 6 | Indoor unit outlet pipe thermistor has disconnected or has shorted out. | 6X | -- |
| 9 | Indoor unit electrically erasable programmable read-only memory (EEPROM) error. | 9X | -- |
| 10 | Indoor unit fan has locked up (fan motor operation failure). | -- | 1X |
| 12 | Indoor unit middle pipe thermistor is disconnected or is shorted out. | 1X | 1X |
| 21 | Direct current (DC) peak error / internal power module (IPM) fault; compressor DC voltage was too high. | 2X | 2X |
| 22 | Current transformer2 (CT2) error; alternating current (AC) input is too high. | 2X | 1X |
| 23 | DC link voltage is too low. | 2X | 2X |
| 25 | Voltage to the system is too low or too high. | 3X | 2X |
| 26 | Inverter compressor has seized up or is not providing rotation. | 2X | 5X |
| 27 | Prospective short circuit (PSC) fault error; current to inverter compressor between AC and DC converter circuit is too high. | 2X | 6X |
| 28 | Inverter compressor DC voltage is too high. | 2X | 7X |
| 29 | Inverter compressor amperage is too high. | 2X | 8X |
| 31 | Current to the current transformer (CT) thermistor is too low. | 3X | 9X |
| 32 | Inverter compressor discharge pipe temperature is too high. | 2X | 1X |
| 40 | Current transformer (CT) thermistor is disconnected or is shorted out. | 3X | 2X |
| 41 | Inverter compressor discharge pipe thermistor is disconnected or is shorted out. | 4X | -- |
| 44 | Outdoor unit inlet air thermistor is disconnected or is shorted out. | 4X | 1X |
| 45 | Middle thermistor of outdoor unit condenser coil is disconnected or is shorted out. | 4X | 4X |
| 46 | Outdoor unit suction line thermistor is disconnected or is shorted out. | 4X | 5X |
| 48 | Outdoor unit coil outlet (liquid line) thermistor is disconnected or is shorted out. | 4X | 6X |
| 53 | Communication failure from outdoor unit to indoor unit. | 5X | 8X |
| 60 | Outdoor unit printed circuit board (PCB) EEPROM check sum error. | 6X | 3X |
| 61 | Outdoor unit condenser coil temperature is too high. | 6X | 1X |
| 62 | Outdoor unit inverter compressor PCB heat sink temperature is too high. | 6X | 2X |
| 63 | Condenser coil pipe thermistor temperature is too low. | 6X | 3X |
| 65 | Heat sink thermistor has disconnected or has shorted out. | 6X | 5X |
| 67 | Outdoor brushless direct current (BLDC) fan motor lock error. | 6X | 7X |
Outdoor Unit Error Codes
To access the outdoor unit's Printed Circuit Board (PCB) LEDs (LED1 - Red, LED2 - Green), remove the top cover and then the lid to the PCB box. The location of these LEDs is indicated.
| Error Code | Description | No. of Times Outdoor Unit PCB LEDs Blink (LED1 - Red) | No. of Times Outdoor Unit PCB LEDs Blink (LED2 - Green) |
|---|---|---|---|
| 21 | Direct current (DC) peak error / internal power module (IPM) fault; compressor DC voltage was too high. | 2X | 1X |
| 22 | Current transformer2 (CT2) error; alternating current (AC) input is too high. | 2X | 2X |
| 23 | DC link voltage is too low. | 2X | 3X |
| 25 | Voltage to the system is too low or too high. | 2X | 5X |
| 26 | Inverter compressor has seized up or is not providing rotation. | 2X | 6X |
| 27 | Prospective short circuit (PSC) fault error; current to inverter compressor between AC and DC converter circuit is too high. | 2X | 7X |
| 28 | Inverter compressor DC voltage is too high. | 2X | 8X |
| 29 | Inverter compressor amperage is too high. | 2X | 9X |
| 31 | Current to the current transformer (CT) thermistor is too low. | 3X | 1X |
| 32 | Inverter compressor discharge pipe temperature is too high. | 3X | 2X |
| 40 | Current transformer (CT) thermistor is disconnected or is shorted out. | 4X | -- |
| 41 | Inverter compressor discharge pipe thermistor is disconnected or is shorted out. | 4X | 1X |
| 44 | Outdoor unit inlet air thermistor is disconnected or is shorted out. | 4X | 4X |
| 45 | Middle thermistor of outdoor unit condenser coil is disconnected or is shorted out. | 4X | 4X |
| 46 | Outdoor unit suction line thermistor is disconnected or is shorted out. | 4X | 5X |
| 48 | Outdoor unit coil outlet (liquid line) thermistor is disconnected or is shorted out. | 4X | 6X |
| 53 | Communication failure from outdoor unit to indoor unit. | 5X | 8X |
| 60 | Outdoor unit printed circuit board (PCB) EEPROM check sum error. | 6X | 3X |
| 61 | Outdoor unit condenser coil temperature is too high. | 6X | 1X |
| 62 | Outdoor unit inverter compressor PCB heat sink temperature is too high. | 6X | 2X |
| 63 | Condenser coil pipe thermistor temperature is too low. | 6X | 3X |
| 65 | Heat sink thermistor has disconnected or has shorted out. | 6X | 5X |
| 67 | Outdoor brushless direct current (BLDC) fan motor lock error. | 6X | 7X |
Troubleshooting Resources
For detailed troubleshooting of individual error codes, refer to the Service Manuals available at www.lg-dfs.com.
LG Electronics U.S.A. - Commercial Air Conditioning. For continual product development, LG reserves the right to change specifications without notice. LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG Life's Good" is a registered trademark of LG Corp.
