Lg Neo Plasma Air Conditioner User Manual
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There are the lists of possible LG air conditioner problems. Here you can find the error codes, their meaning, LED lights explanations and possible solutions of the breakdowns you may experience with your air conditioner.
For each of the LG models the lists of error codes are formed separately because they can mean completely different issues. After finding the problem like data communication fault or heat pump fan not spinning, you can make a decision on the way to fix the situation. In any case, if you find out that your item needs serious repair, do not do it by yourself if you do not have a necessary qualification level.
Lg A-12AH Series Air Conditioner Fault Codes
| INDOOR UNIT FAULTS | FASCIA LED’S RED | FASCIA LED’S GREEN | CONTENTS | CASE OF ERROR |
|---|---|---|---|---|
| CHOI or Cl | None | 1 Flash | Indoor Air Sensor (Open/Short) | Open or Short Circuit |
| CH02 or C2 | 2 Flash | Inlet Pipe Sensor | ||
| CH03 or C3 | 3 Flash | Communication (Indoor Wired R/Control) | Data Communication Fault | |
| CH04 or C4 | 4 Flash | Drain Pump / Float Switch | Float Switch Open Circuit (High Level Water Alarm) | |
| CH05 or C5 | 5 Flash | Communication Error (Indoor Outdoor) | Data Communication Fault | |
| CH06 or C6 | 6 Flash | Outlet Pipe Sensor | Open or Short Circuit | |
| CH07 or C7 | 7 Flash | Different Operation Mode | Indoor Unit is Set in Different Cool/Heat Operation Mode | |
| CH09 or C9 | 9 Flash | EEPROM Check Sum | Check Sum Mis-matching | |
| CHlOor CA | 1 Flash | None | BLDC Fan Motor Lock | Fan Motor not Operating |
| HL | High Limit (Float Switch) or Hard Lock | Same as CH 04 (Float Switch Open Circuit) or Unit under Central Control |
Lg ARNU283BGA2 Air Conditioner Fault Codes
| Error code | Contents | LED01G (Red) | LED02G (Green) | Case of Error | Outdoor Status |
|---|---|---|---|---|---|
| 21 | IPM Fault (Compressor Over current) | 2 times | 1 time | Compressor malfunction. IPM Fault | Off |
| 22 | CT 2 (Max. Current) | 2 times | Current is 14A t | ||
| 23 | DC Link Low Volt. | 3 times | DC Link volt. Is 140V i | ||
| 24 | Low / High Pressure | 4 times | Low / High press switch OPEN | ||
| 25 | AC Low / AC High Volts. | 5 times | Abnormal AC volt. Input. | ||
| 26 | DC Compressor Position | 6 times | |||
| 27 | PSC Fault (Reactor) | 7 times | |||
| 28 | DC Link High Volts | 8 times | Off | ||
| 29 | COMP Over Current | 9 times | Inverter Compressor input current is over 30A | ||
| 32 | Discharge Pipe Temp. High (INV) | 3 times | 2 times | D-Pipe Temp (Inv.) >105°C | |
| 33 | Discharge Pipe Temp. High (Cons.) | 3 times | D-Pipe Temp (Const) >105°C | ||
| 39 | Communication Error | 9 times | Communication Error Between PFC and INV PCB s | ||
| 40 | CT Circuit | 4 times | CT Circuit malfunction | ||
| 41 | DPipe sensor INV. (Open/Short) | 1 time | Open / Short circuit. | ||
| 44 | Air sensor (Open/Short) | 4 times | |||
| 45 | Cond. Pipe Sensor (Open/Short) | 5 times | |||
| 46 | Suction Pipe Sensor (Open'Short) | 6 times | |||
| 47 | D-pipe Sensor Cons. (Open/Short) | 7 times | |||
| 48 | DPipe & Air Sensor (Open) | 8 times | Dual Sensor unplugged | ||
| 51 | Over Capacity | 5 times | 1 times | Over Load Combination | |
| 52 | Communication Error | 2 times | Poor/Loss of Communication | ||
| 53 | Communication Error (Indoor *-* Outdoor) | 3 times | |||
| 54 | Outdoor 3-Phase Power Supply Reverse Phase / Missinq Phase | 4 times | Incorrect Wiring | ||
| 60 | EEPROM Check Sum | 6 times | Check Sum Mis-Match | ||
| 61 | Cond. Pipe Sensor Temp. High | 1 time | Cond. Temp. High | ||
| 62 | Heat Sink Sensor Temp. High | 2 times | Heat Sink Temp. High | ||
| 63 | Cond. Pipe Sensor Temp. Low | 3 times | Cond. Temp. Low | ||
| 65 | Heat Sink Sensor (Open/Short) | 5 times | Open / Short circuit | ||
| 67 | Outdoor BLDC Fan Lock | 7 times | Fan Motor/Circuit Problem | ||
| 73 | PFC Fault Error (S/W) | 7 times | 3 times | Inverter PCB input current is over 48A (Peak) for 2ms | |
| 105 | Comms. Error (Main board Fan board) | 6 times | 5 times | Poor/Loss of Communication |
Lg Art Cool Gallery Series Air Conditioner Fault Codes
Neo Plasma Air Conditioner Manual
| Error code | Contents | Case of error | Indoor Status |
|---|---|---|---|
| 1 | Air sensor (open/short) | Open / Short circuit | Off |
| 2 | Inlet pipe sensor | ||
| 3 | Communication(lndoor«-»Wired R/Control) | Communication Poorly | |
| 4 | Drain pump / Float switch | Float switch Open circuit (High level water alarm) | |
| 5 | Communication(Indoor «-* Outdoor) | Communication Poorly | |
| 6 | Outlet pipe sensor | Open / Short circuit | |
| 7 | Different operation mode | Indoor units set in different operation modes | |
| 9 | Checksum Error | Defective PCB or EEPROM Connections | |
| 10 | BLDC Motor Fan Lock (Indoor) | Fan Motor or PCB Defective | |
| HL | Hard Lock (Controlled by External Source) | Controlled by Dry Contact or Central Controller | |
| CL | Child Lock Function selected | Not an error, press Timer & Min buttons simultaneously for 3 seconds to toggle On/Off | On |
| Po | Jet Cool Mode selected | Not an error, press Jet Cool button to toggle On/Off |
Neo Plasma Air Conditioner Manual
Lg Air LP1200DXR Conditioner Fault Codes
| Error Code | Flashing Lights | Fault | Display Indoor | Outdoor | Indoor operation |
|---|---|---|---|---|---|
| C1 or CH1 | 1 | Indoor temperature sensor open or closed circuit | 0 | ON | |
| C2 or CH2 | 2 | 0 | 0 | ||
| C4 Or CH4 | 4 | Heat sink temperature sensor open or closed circuit | 0 | 0 | |
| C5 or CH5 | 5 | Communication between indoor and outdoor units | 0 | 0 | OFF |
| C6 or CH6 | 6 | Excessive current at inverter DC power circuit (can be indoor pipe outlet sensor, or outdoor condenser sensor on some models) | 0 | 0 | SHUT DOWN |
| C7 or CH7 | 7 | Excessive compressor current | 0 | 0 | |
| C8 or CH8 | 8 | Indoor fan not rotating | 0 | OFF | |
| C9 or CH9 | 9 | Outdoor fan not rotating | 0 | 0 | |
| CA | 10 | 1. Discharge temp more than 130 °c | 0 | 0 | ON |
| 2. Faulty discharge thermistor | |||||
| CC | 2+ 1 | EEPROM error | 0 | ON | |
| CD | 3+ 1 | Inverter module error | 0 | ||
| Po | System in Power Mode - not a fault | 0 | |||
| Lo | System in test mode - not a fault | 0 |
Lg Air LW1813ER Conditioner Fault Codes
| Error | Solution |
|---|---|
| Er 01 | - short-circuited air temperature sensor or open circuit; |
| Er 02 | - the evaporator temperature sensor is short-circuited or an open in the circuit; |
| Er 03 | - bad connection between the control panel and the wired indoor unit; |
| Er 04 | - error of float level sensor of condensate or pump (drain pump); |
| Er 05 | - an error of connection of external with the internal block; |
| Er 06 | - short-circuit of outdoor unit temperature sensor or open circuit; |
| Er 07 | - inclusion of internal blocks of the multisystem for different operating modes; |
| HL | - error similar to 04, the float sensor is open; |
| CL | - child lock is set, press Timer & Min Buttons for 3 seconds; |
| Po | - jet cool mode is set, for exiting press jet cool button |
Lg Air Conditioner User Manual
Lg multi V PLUS Air Conditioner Fault Codes
Neo Plasma Air Conditioner
| Error | Solution |
|---|---|
| P1 or H8 | - Water reservoir is full. Unplug unit. Drain tank according to instructions found in user manual. Plug unit back in and power on. |
| E1 or F1 | - Ambient room temperature error. |
| E2 or F2 | - Evaporator sensor error. |
| E4 | - Display panel communication error. |
| F4 | - Outdoor temperature sensor error. |
| F0 | - Refrigerant sensor error. |
| E5 | - Overcurrent protection error. For all above errors, power unit off for 30 minutes and then restart. |
| H3 | - Compressor overload protection error. |
| E8 | - Overload malfunction error. |