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LG AC Error Code List PDF Free Download
LG AC Error Code List
The ‘ Smart Diagnosis ‘ functionality is an exciting feature of the latest LG inverter ACs. This feature enables the machine to detect errors in installation and usage.
If there is a problem with the device, it flashes an error code on the indoor unit display or the remote control option.
These codes can help you determine the error and allow the AC mechanic to arrive at the appropriate remedial measure.
LG AC Indoor Unit Error Code List
| Error Code | Description |
| 1 | Indoor unit room temperature sensor error |
| 2 | Indoor unit inlet pipe sensor error |
| 3 | Wired remote control error |
| 4 | Float switch error |
| 5 | Communication errors between the indoor and outdoor units |
| 6 | Indoor unit outlet pipe sensor error |
| 9 | Indoor unit EEPROM error |
| 10 | Indoor unit BLDC fan motor lock |
| 12 | Indoor unit middle pipe sensor error |
LG AC Outdoor Unit Error Code List
| Error Code | Description |
| 21 | DC Peak (IPM) Fault – Compressor DC voltage is too high |
| 22 | CT2 (Max CT) – Alternating current input too high |
| 23 | DC Link Low Voltage |
| 25 | AC Low/High Voltage |
| 26 | DC Comp Position Error (not providing rotation – locking) |
| 27 | The Inverter Compressor Discharge pipe overheat |
| 28 | Inverter Compressor DC voltage is too high |
| 29 | Comp Phase Over-current – Inverter compressor amperage is too high |
| 31 | Current-to-current transformer (CT) thermistor is too low |
| 32 | Exceed the compression ratio limit |
| 34 | High-pressure sensor high |
| 35 | Low-pressure sensor low |
| 36/38 | Refrigerant Leak detection |
| 37 | The outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out |
| 40 | CT sensor error – Thermistor is disconnected or shorted out |
| 41 | Discharge Pipe sensor error – INV is disconnected or shorted out |
| 42 | Low-Pressure sensor error |
| 43 | High-Pressure sensor error |
| 44 | Outdoor air sensor error – Disconnected or shorted out |
| 45 | Condenser middle pipe sensor error – Disconnected or shorted out |
| 46 | Suction pipe sensor error – Disconnected or shorted out |
| 48 | The condenser coil temperature is too high |
| 51 | Excess capacity – Mismatch between IDU and ODU |
| 53 | Communication error – between the IDU and ODU |
| 60 | Outdoor unit printed circuit board (PCB) EEPROM checksum error |
| 61 | The heat sink thermistor has disconnected or shorted out |
| 62 | Heat sink sensor temperature – high |
| 63 | Condenser coil pipe thermistor temperature is low |
| 65 | Heat sink thermistor has disconnected or shorted out |
| 67 | BLDC motor fan lock |
| 72 | Detect 4-way valve transfer failure |
| 93 | Communication error |
LG AC F1, F2, F3
It indicates that the AC is working in the FAN mode, and the number corresponds to the set fan speed. The situation is normal, and the AC does not have any other issues.
LG Air Conditioner P2 or FL Codes
This code indicates that the water collection tank is full. The solution is to empty the tank.
Now, let us discuss the most frequently searched error codes and their respective solutions.
P2 or FL – Water tank full error
Reason – Depending on your AC model, this error code flashes on display to indicate that the drain pan in the outdoor unit is full.
Generally, the drain pan does not need any emptying. The AC unit features a slinger fan mounted above the drain pan. The fan sucks the water and slings it on the condenser to discharge heat. So, water accumulation usually does not occur.
However, you can take remedial action if you observe the following situations.
- P2 or FL code keeps recurring
You can remove the drain port cap and tilt the AC to allow the water to flow out of the drain outlet. If the AC unit is in COOL mode and the error code keeps recurring, it indicates that the humidity in the room is high. But, the unit is functioning correctly.
Setting the fan speed to ‘LOW’ ensures that you do not have to drain the unit frequently. It slows down air circulation and reduces the amount of moisture removed by the unit. However, you should create a controlled environment by shutting down all windows and doors.
If the unit is in the DRY mode, it indicates that it is primarily functioning to remove moisture from the air. So, you have to change the mode to COOL and reduce moisture removal.
| Author | – |
| Language | English |
| No. of Pages | 2 |
| PDF Size | 1 MB |
| Category | PDF of Lists |
| Source/Credits | www.orionair.co.uk |
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