LG Air Conditioning
97 fault codes documented
Error 01 - Indoor air sensor open or short circuit
The indoor unit's air sensor has detected an open or short circuit, meaning it's not functioning correctly.
Error 02 - Inlet pipe sensor open or short circuit
The inlet pipe sensor in the indoor unit has an open or short circuit, indicating a malfunction.
Error 03 - Communication error between indoor unit and wired remote
There is poor communication between the indoor unit and its wired remote controller.
Error 05 - Communication error between indoor and outdoor units
This code indicates a communication fault between the indoor and outdoor units. It appears approximately 5 minutes after powering up the system.
Error 06 - Outlet pipe sensor open or short circuit
The outlet pipe sensor in the indoor unit is experiencing an open or short circuit, indicating it's not functioning correctly.
Error 07 - Different operation modes selected
This fault occurs when different indoor units within the same system are set to operate in conflicting modes (e.g., one cooling, one heating).
Error 09 - Checksum Error / PCB defect
This indicates a checksum error, usually caused by a defective main PCB or issues with EEPROM connections.
Error 10 - Indoor fan motor issue
This code relates to a problem with the indoor fan motor. Refer to fault code 67 for specific troubleshooting steps.
2 flashes, 1 beep - IPM Fault (Compressor Over current)
This code indicates a problem with the compressor, specifically an over-current issue detected by the IPM (Intelligent Power Module). The outdoor unit is likely malfunctioning.
2 flashes, 2 beeps - CT 2 (Max. Current) reached
This fault means the current measured by Current Transformer 2 has reached its maximum limit of 14A. This could indicate an issue with the compressor or electrical system drawing too much power.
2 flashes, 3 beeps - DC Link Low Voltage
This code signifies that the DC Link voltage has dropped too low, to 140V or below. This can affect the performance and stability of the inverter system.
2 flashes, 4 beeps - Low / High Pressure Switch Activated
This indicates that either the low or high-pressure switch has been activated, meaning the system pressure is outside of its normal operating range. This could be due to refrigerant issues or airflow problems.
2 flashes, 5 beeps - AC Low / AC High Voltage
This error code means the AC input voltage to the unit is abnormal, either too low or too high. This could be a problem with the building's electrical supply or internal power components.
2 flashes, 6 beeps - DC Compressor Position Fault
This code indicates an issue with the position detection of the DC compressor. The system cannot accurately determine the compressor's rotational position.
2 flashes, 7 beeps - PSC Fault (Reactor)
This code relates to a fault with the PSC (Power Smoothing Circuit) or the reactor component. This is part of the inverter's power conditioning system.
2 flashes, 8 beeps - DC Link High Voltage
This error indicates that the DC Link voltage within the inverter system has become too high. This can be caused by issues with the power supply or internal components.
2 flashes, 9 beeps - Compressor Over Current
This fault code signifies that the inverter compressor's input current has exceeded 30A. This is a protection mechanism to prevent damage to the compressor.
3 flashes, 2 beeps - Discharge Pipe Temperature High (Inverter)
This error indicates that the discharge pipe temperature for the inverter compressor has exceeded 105°C. This often points to a refrigerant issue or restricted airflow.
3 flashes, 3 beeps - Discharge Pipe Temperature High (Conventional)
This fault code indicates that the discharge pipe temperature for a conventional compressor has exceeded 105°C. Similar to the inverter version, this usually relates to refrigerant or airflow problems.
3 flashes, 9 beeps - Communication Error Between PFC and INV PCBs
This code indicates a loss of communication between the PFC (Power Factor Correction) board and the INV (Inverter) PCB. This prevents the different parts of the system from working together correctly.
4 flashes - CT Circuit Malfunction
This error code points to a malfunction within the Current Transformer (CT) circuit. This circuit is responsible for measuring electrical current, and a fault here can disrupt system operation.
4 flashes, 1 beep - D-pipe Sensor INV. (Open/Short)
This indicates an issue with the discharge pipe sensor on the inverter model. The sensor is either disconnected (open) or has a short circuit, preventing accurate temperature readings.
4 flashes, 4 beeps - Air Sensor (Open/Short)
This code signifies a fault with the air sensor, which is either disconnected (open) or short-circuited. This sensor monitors the ambient air temperature.
4 flashes, 5 beeps - Cond. Pipe Sensor (Open/Short)
This error indicates a problem with the condenser pipe sensor. The sensor is either not connected (open) or has a short circuit, affecting temperature monitoring.
4 flashes, 6 beeps - Suction Pipe Sensor (Open/Short)
This fault indicates an issue with the suction pipe sensor, which is either disconnected (open) or short-circuited. This sensor monitors refrigerant temperature in the suction line.
4 flashes, 7 beeps - D-pipe Sensor Cons. (Open/Short)
This fault code signifies an issue with the discharge pipe sensor on a conventional (non-inverter) compressor. The sensor is either disconnected (open) or short-circuited.
4 flashes, 8 beeps - Dual Sensor Unplugged
This code indicates that both the discharge pipe and air sensors are disconnected or have faulty connections. The system cannot get readings from these critical temperature points.
5 flashes, 1 beep - Over Capacity
This fault code indicates that the system is operating under an overload condition, often referred to as 'Over Load Combination'. This means the unit is trying to do more than its designed capacity.
5 flashes, 2 beeps - Communication Error (Main micom ↔ Sub micom)
This error signifies a communication breakdown between the main microcontroller (micom) and a sub-micom within the system. This prevents proper data exchange and control.
5 flashes, 3 beeps - Communication Error (Indoor ↔ Outdoor)
This fault indicates a loss of communication between the indoor unit and the outdoor unit. This prevents the system from operating correctly.
5 flashes, 4 beeps - Outdoor 3-Phase Power Supply Reverse Phase / Missing Phase
This error means the 3-phase power supply to the outdoor unit is incorrect, either with the phases reversed or one phase missing. This can cause damage to the compressor and motor.
6 flashes - EEPROM Check Sum Mismatch
This fault indicates that the data stored in the EEPROM (memory chip) has become corrupted or does not match the expected values. This can affect system settings and operation.
6 flashes, 1 beep - Condenser Pipe Sensor Temperature High
This indicates that the temperature sensor on the condenser pipe is reading a temperature that is too high. This can be due to poor airflow or refrigerant issues.
6 flashes, 2 beeps - Heat Sink Sensor Temperature High
This code means the temperature sensor on the heat sink of the inverter has detected a temperature that is too high. This indicates a potential overheating issue within the inverter.
6 flashes, 3 beeps - Condenser Pipe Sensor Temperature Low
This fault code indicates that the condenser pipe sensor is reading a temperature that is too low. This could be due to refrigerant issues or sensor malfunction.
6 flashes, 5 beeps - Heat Sink Sensor (Open/Short)
This indicates a fault with the heat sink sensor, which is either disconnected (open) or short-circuited. This sensor monitors the temperature of the inverter's heat sink.
Error 67 - Outdoor fan motor not rotating
This code indicates that the outdoor fan motor is not detected as rotating, which could be due to a mechanical or electrical failure.
Error 73 - System overload or component failure
This error code indicates potential issues such as system overload, damage to components, abnormal input voltage, or a faulty inverter PCB.
Error 105 - Communication error between main and fan PCBs
This fault indicates a communication breakdown between the main outdoor unit PCB and the fan PCB.
Encendedor se apaga y reintenta encender el quemador (secadora a gas)
Si el aire no se purga completamente de la línea de gas, el encendedor puede apagarse antes de que el gas encienda el quemador principal. La secadora intentará encender el gas de nuevo después de aproximadamente dos minutos.
No warm air emitted — Waiting for heating or defrosting mode
When starting in Heating Mode, the unit may not immediately emit warm air. This can be normal as the system warms up or if the outdoor unit is in a defrosting cycle.
Air conditioner does not work — Power supply or remote issue
The air conditioner is not functioning. This could be due to a lack of power, a tripped circuit breaker, or an issue with the remote control's batteries.
Anti Bacterial light glows — Anti Bacterial option selected
This light indicates that the Anti Bacterial option has been selected. This option uses high temperature during the cycle to reduce bacteria.
Unit beeps twice and lamp blinks 4 times — Auto Restart disabled
This specific audible and visual signal confirms that the Auto Restart function has been turned off. The unit will not automatically resume previous settings after a power interruption.
Beeper light on — Audible signals are active
The Beeper light indicates that audible signals, such as button presses and cycle completion alerts, are active. The volume can be adjusted or turned off.
Beeps twice, lamp blinks twice 4 times — Auto Restart function disabled
This audible and visual cue confirms that the Auto Restart function has been turned off. The air conditioner will not resume its previous settings after a power outage.
Burning smell and strange sounds — Potential electrical issue
A burning smell or unusual noises coming from the unit indicate a serious problem, possibly related to electrical components. Immediate action is required.
CH04 - Float switch activated or drain pump issue
This code indicates the float switch in the fan coil unit has risen due to high water level. If the unit lacks a drain pump, it means a jumper plug is missing from the drain terminal.
CH05 - Communication error between indoor and outdoor units
This code signifies a communication problem between the indoor and outdoor units, appearing about 5 minutes after the system powers up. The communication signal is a fluctuating DC voltage.
CH07 - Conflicting cooling and heating modes
This code appears on multi-split systems when the main unit is set to one mode (cooling or heating) but a connected slave unit is set to the opposite mode. The first unit turned on acts as the 'master'.
Child Lock LED glows — Child Lock is active
When Child Lock is enabled, the Child Lock indicator light will illuminate. All buttons on the control panel will be locked.
CL - Child Lock Function Selected
The Child Lock function is active, preventing changes to the unit's settings via the remote controller. This is not an error.
Clean Filter flashing — Lint filter needs cleaning
The Clean Filter indicator will flash when the dryer is powered on, and stops flashing once the start/pause button is pressed. It is a reminder to clean the lint filter for optimal performance.
Clean Filter light is on — Lint filter needs cleaning
The 'Clean Filter' indicator light illuminates to remind you to clean the lint filter. A clogged lint filter can reduce drying efficiency and increase drying times.
Clothes are shrinking — Garment care instructions not followed
Some fabrics naturally shrink when washed or dried. Following the garment's specific care instructions is crucial to prevent shrinkage.
Clothes are wrinkled — Delayed removal from dryer
Leaving clothes in the dryer after the cycle has finished can cause wrinkles to form and set.
Damp Dry Beep light glows — Damp Dry Beep option selected
This light indicates the Damp Dry Beep option is active. You will hear a beep when the load is approximately 80% dry, allowing you to remove items that might be fully dry or need ironing.
Door does not close or open properly
If the door and hinge are not aligned in the center when closing, the door may not close or open correctly. This can be an issue after reversing the door swing.
Dry Level lights glow — Dryness level selected
These lights indicate the selected dryness level for Sensor Dry Cycles. You can choose how dry you want the clothes to be.
Dryer does not heat — Gas supply issue
For gas dryers, a lack of heat can occur if the gas supply is shut off or blocked.
Dryer does not start — Fuse blown or circuit breaker tripped
The dryer may tumble but not heat, or not start at all, if a fuse is blown or the circuit breaker has tripped.
Dryer overheating — Potential damage or fire risk
Overheating can occur due to loose electrical connections or if the dryer is connected to an incorrect circuit. Ensure proper wiring and secure connections.
Drying time inconsistent — Heat settings or load sizes vary
Drying time can fluctuate due to inconsistent heat settings, load sizes, fabric types, or the condition of the dryer's exhaust system.
Drying time too long — Underloaded dryer
Drying too few items can sometimes lead to longer drying times because there isn't enough mass for proper tumbling and heat distribution.
Error code displayed — Unit malfunction detected
The air conditioner has detected an error through its self-diagnosis function and is displaying an error code. This indicates a specific issue that needs to be addressed.
Excessive vibration — Noise and vibration may result
If the leveling feet or locknuts are not properly tightened, or if screws are not installed correctly, it can lead to noise and vibration during operation.
Gas dryer not igniting — Gas igniter may go off
If air is not purged from the gas line before ignition, the gas igniter may shut off before the main burner ignites. The system will attempt to re-ignite.
Greasy spots on clothes — Stains from washing process
Greasy spots might be residual stains from the washing process that were not fully removed before drying.
HL - Hard Lock (Controlled by External Source)
This status indicates the unit is being controlled by an external source, such as a dry contact or a central controller, not directly by its remote.
Incorrect electrical connection — Risk of damage, fire, or shock
Connecting the dryer to an incorrect voltage circuit or improper wiring can cause serious injury, fire, or damage to the dryer. Ensure the wiring and grounding conform to local codes and the appliance's requirements.
Incorrect venting — Undesirable drying performance or fire risk
Improperly installed or taped vents, or using the wrong type of ducting, can lead to poor drying performance and create a fire hazard. The dryer must be vented to the outdoors.
Indoor unit discharging mist — Normal condensation in cool air
The air conditioner is discharging mist from the indoor unit. This is a normal phenomenon when the cooled air from the unit causes condensation as the room temperature decreases.
Indoor unit gives off an odor — Absorbed odors or filter needs cleaning
The indoor unit is emitting an odor, which may be due to odors absorbed into the unit over time, such as cigarette smoke. Cleaning the filter is often the solution.
Lamp blinks twice, 4 times — Auto Restart function disabled
This blinking pattern indicates that the Auto Restart function has been successfully disabled. The unit will not automatically restore previous settings after a power failure.
Lint on clothes — Foreign material in load
Small items like tissues or paper left in pockets can break apart and create excess lint.
Loose connection — Heating failure or fire risk
If screws are not tightened properly, or if the wire is not connected securely to the terminal block, it can cause connection errors. This may result in product damage, heating failure, or even fire.
Clicking, creaking, flowing, or blowing sounds — Normal operation
Certain sounds like clicking, creaking, flowing, or blowing are normal during operation. These are usually due to the movement of internal parts or the flow of refrigerant.
Dryer is not level — Laundry may not tumble properly and sensors may malfunction
If the dryer is not level, the laundry may not tumble correctly. This can also cause the internal sensors to not detect humidity accurately.
Conexión de cable incorrecta al bloque terminal
Si el cable de alimentación no se conecta al tornillo del mismo color en el bloque terminal, esto puede causar una corriente excesiva, daños al producto o un fallo en la calefacción.
Ruido y vibración si las tuercas de nivelación no están aseguradas
Si las tuercas de las patas niveladoras del pedestal no están bien aseguradas, la secadora o lavadora puede experimentar ruido y vibración excesiva durante su funcionamiento.
Dificultad para aplicar burletes por objetos extraños
Si la superficie superior de la secadora o lavadora tiene objetos extraños, será difícil adherir correctamente los burletes. Esto puede afectar la instalación de accesorios apilables.
Ruidos y vibraciones por tornillos mal instalados en el pedestal
Si los tornillos que fijan el electrodoméstico al pedestal no se instalan correctamente, esto puede causar ruidos inusuales y vibraciones durante el funcionamiento.
Po - Jet Cool Mode Selected
The Jet Cool mode is activated, which rapidly cools the room. This is a normal operating mode, not an error.
Poor drying performance or lint buildup
The drying performance can be affected by issues with the exhaust vent system. Lint buildup, incorrect vent material, or improper installation can lead to longer drying times or ineffective drying.
Sensor drying time may change suddenly
When using sensor drying, the dryer automatically detects the laundry's moisture and determines the necessary operating time. The time may suddenly increase or decrease during the cycle because the sensor is detecting the moisture level. This is normal and not a sign of malfunction.
Vibración excesiva después de la instalación, ajuste las patas niveladoras
Después de la instalación inicial, puede experimentar vibración excesiva durante el primer ciclo de funcionamiento. Esto generalmente se puede solucionar ajustando las patas niveladoras.
Single beep tone — Child Lock enabled or disabled
A single beep tone is heard when the Child Lock feature is activated or deactivated. This confirms the action taken on the control panel.
Start/Pause button active — Dryer is running or paused
Pressing the Start/Pause button initiates the drying cycle or pauses it if it is already running. The button will indicate its active state when the dryer is operating.
Static in clothes — Synthetic or blended fabrics
Certain fabrics, such as synthetics and permanent press blends, are more prone to developing static electricity.
Temp Control lights glow — Temperature setting selected
These lights indicate the selected temperature setting for manual cycles. Temperature modifiers cannot be used with Sensor Dry Cycles.
Uneven drying or sensor not detecting moisture correctly
If the dryer is not level, the clothes may not tumble properly, and the internal sensors may not detect moisture correctly. This can lead to uneven drying.
WARNING: Improper exhaust installation can void warranty
Correct installation of the exhaust system is crucial for the dryer's performance and safety. Failure to install the exhaust system correctly will void the appliance's warranty.
Explosion Hazard warning displayed — Flammable materials present
This warning indicates that flammable materials or vapors, such as gasoline, are too close to the dryer. These items should be kept away from the appliance.
Fire Hazard warning displayed — Items with oil residue present
This warning indicates that items with oil residue, such as cooking oils, are being dried or are about to be dried. Washing may not fully remove oil, and drying such items can pose a fire risk.
Water leaking from indoor unit — Condensation or blockage
Water is leaking from the indoor unit, even when humidity levels are not high. This could be due to condensation issues or a blockage in the drainage system.
Water leaking from outdoor unit — Normal condensation during heating
Water is leaking from the outdoor unit. This is a normal occurrence due to condensed water forming on the heat exchanger during heating operations.
Wrinkle Care light glows — Wrinkle Care option selected
This light indicates that the Wrinkle Care option has been selected. This option helps to prevent wrinkles by periodically tumbling the laundry for up to three hours after the cycle ends.