LG Split Ac Error Code List PDF free download, Lg Dual Inverter Ac Error Code List, Lg Ac Error Code List Ch, Lg Inverter Ac Error Code List Ch 05, 10, Lg Air Conditioner Error Codes Ch.
LG Split Ac Error Code List PDF
Dear Readers, We Are Providing A Pdf Of The Lg Split Ac Error Code List To You All. A Particularly Prosperous Multinational Conglomerate Firm Is Lg Corp. In Busan, South Korea, On January 5, 1947, Lg Corporation Was Established. Koo In-hwoi Started The Business, Which Has Its Corporate Headquarters In Seoul, South Korea.
As Of December 2021, The Lg Corporation Employed 2,59,915 People. Popular Divisions Of The Business Include Lg Electronics, Lg Uplus, Lg Chem, Lg Cns, And Many More. To Comprehend The Faults If You Are Using An Lg Air Conditioner, You Need Read The Lg Split Ac Error Code List Pdf.
Indoor Unit Faults
| Error Code | Possible 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 |
Outdoor Unit Faults
| Error Code | Possible 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 |
LED Error Codes
| Error Code | Description | LED 01G/M (Red) | LED 01G/M (Red) | Possible Cause |
|---|---|---|---|---|
| 21 | DC Link Peak (IPM Fault) | 2 times 3 | 1 times 3 | Over Rated Current |
| 22 | CT 2 (Max CT) | 2 times 3 | Input Over Current | |
| 23 | DC Link Low Volt. DC Link High Volt. | 3 times 3 | DC Link Volt is below 140Vdc DC Link Volt is above 420Vdc | |
| 25 | Low Voltage/Over Voltage | 5 times 3 | Abnormal AC Volt Input | |
| 26 | DC Compressor Position Error | 6 times 3 | Compressor Starting Fall Error | |
| 27 | PSC/PFC Fault Error | 7 times 3 | Over Inverter PCB input current | |
| 29 | COMP Over Current | 9 times 3 | Over Inverter Compressor Current | |
| 32 | D-Pipe High | 3 times 3 | 2 times 3 | D-Pipe Temp. High |
| 35 | Low Pressure Error | 5 times 3 | Excessive decrease of Low Pressure | |
| 39 | Communication Error | 9 times 3 | Communication Error Between PFC Micom and INV Micom | |
| 40 | CT Sensor (Open/Short) | 4 times 3 | 0 | CT Circuit Malfunction |
| 41 | INV. D-Pipe Th Error | 1 times 3 | Open/Short | |
| 43 | High Pressure Sensor Error | 3 times 3 | ||
| 44 | Outdoor Air Th Error | 4 times 3 | ||
| 45 | Cond. Mid-Pipe Th Error | 5 times 3 | ||
| 46 | Suction Pipe Th Error | 6 times 3 | ||
| 48 | Cond. Out-Pipe Th Error | 8 times 3 | ||
| 51 | Capacity Over | 5 times 3 | 1 times 3 | Over combination |
| 53 | Signal Error (Indoor <-> Outdoor) | 3 times 3 | Communication Poorly | |
| 54 | 3-Phase Wrong wiring | 4 times 3 | 3-Phase Wrong Wring of Outdoor Unit (Reverse Phase/Omission of Phase) | |
| 60 | EEPROM Check Sum Error | 6 times 3 | 0 | Check Sum Mismatching |
| 61 | Cond. Pipe Th High | 1 times 3 | Cond. Temp. High | |
| 62 | Heat sink Th High | 2 times 3 | Heatsink Temp. High | |
| 65 | Heat sink Th Error | 5 times 3 | Open/Short | |
| 67 | Outdoor BLDC Fan Lock | 7 times 3 | Outdoor Fan is not operation | |
| 73 | PFC Fault Error(SAN) | 7 times 3 | 3 times 3 | Over Current of Outdoor Unit PFC |
Error Codes with Possible Causes
| Error Code | Description | Possible Cause | Check point and normal condition |
|---|---|---|---|
| 1 | Indoor air sensor | • Open / Short • Soldered poorly • Internal circuit error | Normal resistor: 10KS2/ at 25°C (Unplugged) Normal voltage : 2.5Vdc / at 25°C (plugged) |
| 2 | Indoor inlet pipe sensor | • Open / Short • Soldered poorly | Normal resistor: 5K£2/ at 25°C (Unplugged) Normal voltage : 2.5Vdc / at 25°C (plugged) |
| 6 | Indoor outlet pipe sensor | • Internal circuit error | – |
| 3 | Communication | • Open / Short | • Connection of wire |
| 3 | Wired R/C | • Wrong connection | • Main PCB Volt. DC 12V • Noise interference |
| 4 | Drain pump/Float switch | • Float switch Open. (Normal: short) | • The connection of wire(Drain pump/ Float switch) • Drain pump power input. (220V) • Drain tube installation. • Indoor unit installation. (Inclination) |
| апр.53 | Communication (Indoor – Outdoor) | • Communication poorly | • Power input AC 220V. (Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misconnected. • The GND1,2 is not connected at main GND. • The communication line is shorted at GND. • Transmission circuit of outdoor PCB is abnormal. • Transmission circuit of indoor PCB is abnormal. |
| 21 | DC Peak | • Instant over current • Over Rated current • Poor insulation of IPM | • An instant over current in the U,V,W phase – Comp lock – The abnormal connection of U,V,W • Over load condition – Overcharging of refrigerant – Pipe length. • Poor insulation of compressor |
| 22 | Max. C/T | Over current (14A) | Malfunction of compressor Blocking of pipe Low voltage input Refrigerant, pipe length, blocked |
| 40 | CfT Internal circuit | Initial current error | Malfunction of current detection circuit. (Open / Short) The voltage of “C01N” Is 4.0Vdc(25A). |
| 23 | DC Link | • DC link volt, is 140Vdc. | • Check the power source. |
| 23 | Low voltage. | – | • Check the components. |
| 28 | DC Link High voltage | • DC link volt, is 420Vdc T | – |
| 24 | Press S/W Open | • Low / High press | • Check the connection of “CN_Press”. • Check the components. |
| 25 | Input voltage | • Abnormal Input voltage | • Check the power source. • Check the components. |
| 26 | DC Compressor Position | • Compressor position detect error | • Check the connection of comp wire “U,V,W” • Malfunction of compressor • Check the component of “IPM”, detection parts. |
| 27 | PSC Fault | • Over current at “IGBT” | • Check the component of “IGBT”. • Check the components. |
| 32 | D-pipe (Inverter) temp, high (105°C t) | • Discharge sensor (Inverter) temp, high | • Check the discharge pipe sensor for INV. • Check the install condition for over load. • Check the leakage of refrigerant. • Check the SVC V/V open. |
| 33 | D-pipe (Constant) temp, high (105°C I) | • Discharge sensor (Cons.) temp, high | • Check the discharge pipe sensor for Cons. • Check the install condition for over load. • Check the leakage of refrigerant. • Check the SVC V/V open. |
| 41 | D-pipe sensor (Inverter) | • Open / Short • Soldered poorly • Internal circuit error | • Normal resistor: 200K£2 / at 25°C (Unplugged) • Normal voltage : 4.5Vdc / at 25°C (plugged) |
| 44 | Air sensor | – | • Normal resistor: 10K£2 / at 25°C (Unplugged) • Normal voltage : 2.5Vdc / at 25°C (plugged) |
| 45 | Condenser Pipe sensor | – | • Normal resistor: 5K£2 / at 25°C (Unplugged) |
| 46 | Suction Pipe sensor | – | • Normal voltage : 2.5Vdc / at 25°C (plugged) |
| 47 | D-pipe sensor (Constant) | – | • Normal resistor: 200K£2 / at 25°C (Unplugged) • Normal voltage : 4.5Vdc / at 25°C (plugged) |
| 65 | Heat sink sensor | – | • Normal resistor: 10K£2 / at 25°C (Unplugged) • Normal voltage : 2.5Vdc / at 25°C (plugged) |
| 51 | Over capacity | • Over capacity | • Check the indoor unit capacity. • Check the combination table. |
| 60 | EEPROM Check sum | • Check sum error | • Check the PCB ASM P/No. • Check the poor soldering. |
| 61 | Condenser pipe sensor temp, high | • Condenser pipe sensor detected high temp.(65°C) | • Check the load condition. • Check the sensor of Condenser pipe sensor. |
| 62 | Heat sink sensor temp, high | • Heat sink sensor detected high temp.(85°C) | • Check the fan is locked. • Check the sensor of heat sink. |
| май.53 | Title Communication (Indoor – Outdoor) | • Communication poorly | • Power input AC 220V. (Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misconnected. • The communication line is shorted at GND. • Transmission circuit of outdoor PCB is abnormal. • Transmission circuit of indoor PCB is abnormal. |
| 21 | DC PEAK (IPM Fault) | • Instant over current • Over Rated current • Poor insulation of IPM | • An instant over current in the U,V,W phase – Comp lock – The abnormal connection of U,V,W • Overload condition – Overcharging of refrigerant Pipe length. Outdoor Fan is stop • Poor insulation of compressor |
| Error Code | Possible Cause | Indicator | Operating State |
|---|---|---|---|
| 2 | Outdoor TH. is short or open. | The operating LED will be blinking twice. | Keep operating state. |
| 4 | Temp. of Heat sink is over 95°C. Heat sink TH. is short or open. | The operating LED will be blinking 4 times. | Restart compressor when Heat sink Temp is 85°C below. |
| 5 | Communication error (serial communication). | The operating LED will be blinking 5 times. | The operation is off (enable to restart by remote controller). |
| 6 | DC peak error. | The operating LED will be blinking 6 times. | Compressor will be turned off immediately (not enable to restart by remote controller) |
| 7 | Running current is overloaded. | The operating LED will be blinking 7 times. | Compressor will be turned off immediately (not enable to restart by remote controller) |
| 9 | Outdoor fan lock error (BLDC fan model) | The operating LED will be blinking 9 times. | The operation is off (enable to restart by remote controller). |
| 10 | D-PIPE TH is short or open. | The operating LED will be blinking 10 times. | Compressor will be turned off immediately (restart compressor when D-PIPE TH. is recovered) |
| Error Code | Possible Cause | Check/Repair | Shop Parts |
|---|---|---|---|
| 1 | Temperature sensor failure | Unplug the air conditioner and check the wire harness connections on the electronic control board. Examine the electronic control board for damage. Check for a pinched or broken wire in the temperature sensor wire harness. Replace the temperature sensor if it’s defective. | Temperature sensor, Wire harness, Electronic control board |
| E2 | Failure in the indoor temperature sensor | Unplug the air conditioner and check the wire harness connections on the electronic control board. Examine the electronic control board for damage. Check for a pinched or broken wire in the indoor temperature sensor wire harness. Replace the indoor temperature sensor if it’s defective. | Indoor temperature sensor, Wire harness, Electronic control board |
| E3 | Abnormal operation protection error | Indoor temperature sensor, Wire harness, Electronic control board | |
| E3 | Clean or replace filters if dirty. Unplug the window air conditioner and check all components for visible damage. Check fan blades for damage or obstructions and replace any damaged fan blades. Check all wire harness connections. Replace any damaged wire harnesses. | Filter, Fan blade, Fan motor, Wire harness | |
| E4 (Portable A/C only) | The air conditioner is in the defrost mode | After the air conditioner exits defrost mode and resume normal operation, check the unit to see if it’s cooling properly. If so, then the E4 code is normal. If the portable air conditioner frequently goes into the defrost mode and isn’t cooling properly, check the air filters and clean or replace filters if dirty. | Filter |
| P2 or FL (Portable A/C only) | The water collection tank is full | Empty the water collection tank. If the P2 or FL code appears when the tank is empty, replace the float switch or sensor in the collection tank. | Collection tank float switch or sensor |
Error Codes with Description
| Error Code | Function Name | Description |
|---|---|---|
| 01 h | Read Coil Status | Run/Stop(status), Lock(status), Swing(status), Alarm, Filter Sign(status), Mode Lock(status), Wind Flow Lock(status) |
| 03h | Read Holding Registers | Operation Mode(status), Fan Speed(status), Room Temperature, Error Code, Set Room Temperature(status), Set Lower Temperature(status), Set Upper Temperature(status), User Mode(status) |
| 05h | Force Single Coil | Run/Stop(setting), Lock(setting), Swing(setting), Filter Sign Reset, Mode Lock(setting), Wind Flow Lock(setting) |
| 06h | Preset Single Registers | Operation Mode(setting), Fan Speed(setting), Set Room Temperature(setting), Set Lower Temperature(setting), Set Upper Temperature(setting), User Mode(setting) |
Other Error Codes
| Error Code | Possible Cause | Solution |
|---|---|---|
| Code appears in the display. F1,F2 or F3 | Air conditioner is in FAN mode and the number shown is the set fan speed. | This is normal. The air conditioner is working properly. |
| FL | The water collection tank is full. | Empty the water collection tank. |
| CH01 | Short or open circuit in the indoor air thermistor. | Unplug the air conditioner and contact your authorized LG service center. |
LG Split AC Error Code List PDF Overview
- 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, the 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.
- P2 or FL code without the water draining out
The unit requires repair service if the water does not drain out on tilting the AC. You can summon the AC mechanic to do the job.
- P2 or FL code does not clear after draining the water.
You need to reset the AC unit. First, unplug the AC and keep it unplugged for about ten seconds. Then, plug the unit again and start the AC. The unit should reset. If the P2 or FL code persists, it requires repair service.
- P2 or FL code displays, and the unit does not shut off.
The AC needs a repair service. You can contact the LG mechanic by raising a request.
LG AC CH 34 – Safety Issue
The CH 34 error code does not indicate any defect with the AC but is designed to protect the appliance from overheating. This code is displayed when the unit’s Safety Relay causes it to shut down because of abnormally high pressure in the sealed system.
You can reduce the risk of the ODU overheating by doing the following.
- Protect the ODU from direct sunlight by installing an awning over the unit. It can also prevent the ODU from adverse weather conditions.
- Cleaning the condenser coils regularly helps maintain proper airflow.
- You need not shut off the AC when away from home. A better option is to raise the temperature to a higher setting to allow the AC to maintain better humidity control and cooling. In addition, it lessens the strain on the unit when you set a lower temperature for cooling.
- E1 or CH02 – Auto Stop Protection Error
Reason – A short or open circuit in the indoor pipe sensor results in an Auto-Stop Protection Error.
Solution – Note the error and summon the LG AC mechanic to repair the AC.
- E2 or CH01 – Auto Stop Protection Error
Reason – It is similar to the E1 or CH02 error.
Solution – Your AC requires repair service. Note the error code and call the LG AC service personnel.
- E3 or CH03 – No refrigerant
Reason – If the AC unit does not detect any refrigerant, it displays the E3 or CH03 error code.
Solution – You have to summon the LG AC service person to get the AC repaired.
- E4 – Defrost Mode
E4 is not an error code but an indication that your AC unit has entered the Defrost mode. When the AC unit detects ice on the evaporator located behind the grille, it can happen. The AC resumes normal operations after it completes defrosting.
- E5 – Water tank Full
E5 indicates a full water collection tank. Next, you can remove the drain cap and automatically allow the water to drain away. Once the water drains off, you can fix the cap and restart the AC.
- HI or LO – Temperature indication
If your unit displays HI or LO, there is no need to panic. It is not a product error. HI, or LO indicates indoor temperature. If the indoor temperature is 36 degrees Celsius or more, it indicates HI. If the temperature is 10 degrees Celsius or below, it shows LO. You can reduce or increase the set temperature accordingly.
- SP/CP/PO Codes – Function Codes
Reasons – These codes can appear on the AC display or the remote when you set it to ‘Power Cooling.’ The names can change depending on the model. For example, some models call it Super Cool Power, Ice Cool Power, Turbo-Z, etc.
Solution – The Power Cooling function discharges colder air than the normal cooling mode to cool the room quicker. This mode can be used in the Cooling Mode alone, not the Dry or Air Purification Mode. In addition, the unit sets the wind speed and temperature automatically. So when you encounter such codes on your LG AC unit or remote, you need not worry.
- ON – Function Code
Reason – When you set the Air Purification Mode in sole operation on the AC, it displays the ON code on the screen and the dust and air freshness levels.
Solution – The LG unit features a diffuser to produce ions and remove cigarette smoke and fine dust. The ACs also feature PM1.0 dust sensors to detect dust particles. When the Air Purification mode is in sole operation, it displays the ON code, a color indicator, and the size/level of dust particles.
The Blue color indicates good air purification levels, and the diffuser does not need to function. Green indicates that the air purification is satisfactory, and there is no need for the diffuser. Yellow and Red indicate bad/very-bad pollution levels, and the diffuser switches on.
You can clean the PM1.0 sensor by opening the sensor cover and using a wet earbud to wipe the lens. Finally, use a dry earbud to remove the moisture. Close the sensor cover.
- CH05 or CH53 – Communication Error Code
Reason – The lack of communication between the IDU and ODU results in flashing the CH05 or CH53 error codes. The reasons could be disconnection of the communication cable, short circuits, circuit faults in the IDU or ODU, T-phase line disconnection, auto addressing is not done, and insufficient distance between the power and communication cable.
Solution – You cannot resolve this issue by yourself. You have to book an AC service request and summon the LG service personnel.
- CA or CH10 – Faulty discharge thermistor error
Reason – When the discharge temperature is more than 130 degrees Celsius, your AC flashes this CA code.
Solution – You should call the AC service personnel to remediate the problem.
- CH38 – Low Refrigerant Detection
Reason – Your AC flashes the CH38 error code if it detects low levels of refrigerant. The objective is to protect the appliance.
Solution – If the appliance flashes this code immediately after installing/re-installing the device, the technician should ensure that the refrigerant levels are sufficient. If the code flashes after using the appliance for a sufficiently long period, the reason could also be electrical instability. Under such circumstances, you can unplug the device and turn it on after five minutes. If the error persists, the refrigeration levels can be low. The solution is to refill the refrigerant. You need a qualified technician to perform this operation.
- CO – Communication Error
Reason – A communication error between the control board and the display causes the CO error to flash on the remote.
Solution – You will need the help of a qualified AC technician to resolve this error.
- CH12 – Indoor Pipe Temperature sensor error
Reason – Your LG AC displays a CH12 error code when the indoor pipe temperature measures a temperature out of range. It is a protective measure.
Solution – A qualified AC technician, can handle this matter. You can note down the code and switch off the AC.
- CH32 – High discharge temperature
Reason – A high discharge temperature can trigger the CH32 error code on your AC. The reason could also be that the AC is low on refrigerant.
Solution – Call the AC mechanic to investigate the problem.
- CH44 – Sensor Error
Reason – If the outdoor unit sensor gets disconnected or shorted, the AC can display a CH44 error code.
Solution – You have to summon the AC service personnel to resolve the issue.
