Error Codes and Troubleshooting for LG Air Conditioners
This page contains a list of all the LG air conditioner malfunction error codes and their potential causes. You can determine the state and problem with the air conditioner or air conditioning system by looking up the error code. LG indoor and outdoor air conditioner fault codes.
LG Air Conditioner Indoor Unit Error Codes
| Error Code | Probable Cause |
|---|---|
| 1 | Indoor unit room temperature sensor error |
| 2 | Indoor unit inlet pipe sensor error |
| 4 | Float switch error (optional) |
| 5 | Communication error between indoor unit and outdoor units |
| 6 | Indoor unit outlet pipe sensor error |
| 9 | Indoor unit EPROM error |
| 10 | Indoor unit BLDC motor fan lock |
| 12 | Indoor unit middle pipe sensor error |
LG Air Conditioner Outdoor Unit Error Codes
| Error Code | Probable Cause |
|---|---|
| 21 | DC Peak (IPM Fault); Compressor DC voltage was too high |
| 22 | Current Transformed (CT2) error; Alternating current (AC) input too high |
| 23 | DC Link Low Volt |
| 25 | AC Low/High Volt |
| 26 | DC Comp Position Error (not providing rotation), Locking |
| 27 | PSC Fault; Current to inverter compressor between AC and DC converter circuit too high |
| 28 | Inverter compressor DC voltage is too high |
| 29 | Inverter compressor amperage is too high |
| 31 | Current-to-current transformer (CT) thermistor is too low |
| 32 | Inverter Compressor Discharge Pipe (D-Pipe) Overheat |
| 40 | CT Sensor Error; Thermistor is disconnected or shorted out |
| 41 | D-Pipe Sensor INV is disconnected or shorted out |
| 44 | Outdoor Air Sensor is disconnected or shorted out |
| 45 | Middle thermistor of outdoor unit condenser coil is disconnected or shorted out |
| 46 | Outdoor unit suction line thermistor is disconnected or shorted out |
| 48 | Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out |
| 53 | Communication failure from outdoor unit to indoor unit |
| 60 | Outdoor unit printed circuit board (PCB) EPROM check sum error |
| 61 | Outdoor unit condenser coil temperature is too high |
| 62 | Outdoor unit inverter compressor PCB heat sink temperature is too high |
| 63 | Condenser coil pipe thermistor temperature is too low |
| 65 | Heat sink thermistor has disconnected or has shorted out |
| 67 | Outdoor brushless direct current (BLDC) fan motor lock error |
Common LG Air Conditioner Problems
| Problem | Probable Cause | Solution |
|---|---|---|
Air Conditioner Fan Won’t Run | Faulty fan blades or fan motor. | Replace the faulty components as necessary. |
| Portable Air Conditioner has Low Cooling Performance | Weak unit cooling capacity for the size of the room. | Increase the number of units in the room. |
| Air Conditioner is Dripping Water | Poor installation of a window aircon unit. | Re-install the unit to tilt outward. |
| Air Conditioner Unit Won’t Power On | Tripped breaker; Failed compressor or capacitor. | Contact a technician to diagnose and fix the issue. |
My LG Air Conditioner Fan Isn’t Running
It’s time to replace the fan motor if the air conditioner is operating but neither the fan nor the fan motor are. It is crucial to get the AC serviced right away by a repair agency because the motor should have been changed much earlier than it ceased working.
Although LG air conditioners are quite robust, after prolonged usage, the fan and fan motor may still have issues. The fan of an air conditioner will wear down far more quickly if you leave it running constantly. Frequent air conditioner maintenance on should identify the worn motor and repair it before it totally breaks down.
My LG Portable Air Conditioner Cooling Performance is Low
Convenience is the design of portable air conditioners. They are not as cool, though, as tiny split air conditioners or window models. The size of your portable air conditioner is the issue if it is blowing cold air but is not cooling the space enough.
Move your air conditioner to a smaller place where it can operate efficiently, or think about adding another portable air conditioner to the room. This will enable you to maintain a pleasant temperature in the space and maximize the cooling power of your LG air conditioners.
My LG Window Air Conditioner is Dripping Water
Poor installation is frequently the cause of dripping water from a window air conditioner. When an air conditioner is installed improperly, it tilts inward rather than outward, and the water collection tank tends to leak within rather than outdoors.
Put your air conditioner back in place. If you choose a qualified air conditioning professional to handle the installation, you can be sure that the unit will be put correctly and won’t leak water all over your flooring. You won’t have to deal with the inconvenience of constantly emptying the condensation to enjoy that cozy, refreshing feeling.
How Do I Reset My LG Air Conditioner
Turn off the air conditioner and disconnect the power cable to reset your LG air conditioner. After unplugging the device for a minimum of 15 seconds, replace the plug. After you reset your device by pressing the power button, your LG air conditioner ought to start up and function normally once more.
Other Air Conditioner Brand Error Codes
