Samsung Air Conditioning

The condenser temperature sensor, located in the outdoor unit, is reporting an error. This sensor monitors the refrigerant temperature in the outdoor coil. This outdoor sensor error will cause the unit to turn off.

A communication error has occurred between the indoor and outdoor inverter MAIN MICOM components for at least one minute. This prevents proper system operation and displays 'Communication error'.

A communication error has occurred after the system completed a 'tracking' procedure. This might relate to unit pairing or initial setup processes and indicates an internal communication issue.

This error indicates a communication failure between the main microcontroller (MAIN MICOM) and the inverter microcontroller (INVERTER MICOM) within the outdoor unit. This prevents proper operation and will cause the system to stop.

The air conditioner is unable to initiate or continue cooling operation due to an internal system check or a conflict in settings. This is a self-diagnostic error.

An unspecified current sensor error has been detected, which may affect the system's ability to monitor current draw and operate safely.

The system has detected that the indoor unit's evaporator coil is freezing, which often leads to reduced airflow and poor performance. This causes the compressor to stop and triggers an outdoor unit protection control error.

The system has detected that two or more indoor units have been assigned the same address. This causes a communication error and prevents proper operation.

Multiple indoor units within the system are configured with the same communication address, causing conflicts.

The indoor unit's room temperature sensor is either short-circuited or has an open circuit, preventing accurate temperature readings.

The indoor unit's room temperature sensor (E121), evaporator inlet sensor (E122), or evaporator outlet sensor (E123) is reporting a short circuit or an open circuit. This means the sensor is not functioning correctly.

The indoor unit's Evaporator Inlet (EVA IN) temperature sensor has a short circuit or an open circuit.

The indoor unit's Evaporator Outlet (EVA OUT) temperature sensor has a short circuit or an open circuit.

The float switch has detected a high water level in the drain pan, indicating a potential blockage or issue with the drainage system.

The indoor unit's fan is not operating correctly or has encountered an error.

An error has occurred with the EEPROM (memory) option settings, which may prevent proper unit operation.

An outdoor unit has been connected that does not support the Wind-Free function, causing a compatibility error.

The temperature fuse in the terminal box has disconnected, indicating a potential overheating condition or electrical fault.

There is a communication error between the indoor and outdoor units, either during initial setup (pre-tracking) or because the actual number of indoor units differs from the outdoor unit's quantity setting.

The indoor and outdoor units have lost communication for at least one minute, leading to an E202 error code and stopping operation. The wired remote controller displays 'Communication error'.

This error indicates a problem with the communication connection or power supply between your indoor and outdoor air conditioning units. It can prevent the system from operating correctly.

These codes indicate a problem with one of the temperature or pressure sensors in the outdoor unit. E221 relates to the outdoor unit temperature sensor, E231 to the condenser (COND.) sensor, E251 to the discharge sensor, and E320 to the OLP sensor.

This error indicates that freezing conditions have been detected in the outdoor unit while the compressor is stopped. This could be due to issues with airflow or the electronic expansion valve (EEV).

This error signifies that the outdoor unit's overload protection has activated while the compressor is stopped, likely due to issues with the fan, electronic expansion valve (EEV), or temperature sensors.

The high-pressure switch has an error or its connector is open, indicating a potential issue with refrigerant pressure.

This error indicates that the compressor's discharge temperature in the outdoor unit has reached a protective limit, possibly due to low refrigerant, a blocked valve, or a faulty temperature sensor.

This error suggests a blockage within the refrigerant piping system, which can severely impede the flow of refrigerant and prevent the unit from cooling or heating effectively.

This error indicates a disconnection in the 3-phase power supply cable to the outdoor unit or a blown fuse on the EMI (Electromagnetic Interference) control board. A similar 'Terminal Block Thermal FUSE error' is also indicated.

The 3-phase power supply to the outdoor unit has a reverse phase (incorrect phase sequence) or an open phase (one or more phases missing).

This is not a product fault but a protection feature. The air conditioner will not operate in heating mode when the outdoor temperature is above 30°C to protect the unit and ensure efficient operation.

This is a product protection feature. The air conditioner will not operate in cooling mode when the outdoor temperature is -5°C or colder to protect the unit and ensure efficient operation.

The system has detected an error with the operation or speed of the outdoor unit's Fan 1.

These codes indicate a problem with the outdoor unit's fan, which is essential for dissipating heat and proper operation of the air conditioner.

This error indicates that the inverter compressor in the outdoor unit is not operating correctly or has failed.

These codes indicate that the compressor in the outdoor unit is having trouble starting or maintaining proper rotation, which is vital for the refrigeration cycle.

The system has stopped operation because it detected an excessive current draw, triggering a full current control protection.

These errors relate to issues with the electrical current. E462 typically signifies an under-current condition, while E484 points to an over-current in the Power Factor Correction (PFC) circuit.

This error indicates that the OLP (Overload Protection) has detected overheating, causing the compressor to stop. This often relates to issues with refrigerant flow or cooling of components.

This error indicates that the Intelligent Power Module (IPM) has detected an excessive electrical current, which triggers a protective shutdown to prevent damage to components.

This error suggests a problem with the compressor's operating voltage limits, possibly indicating an abnormal compressor function or an issue with the inverter control board.

This error indicates a problem with the DC Link voltage, specifically either an over-current condition or a low-voltage condition within the power circuit. This affects the inverter's ability to supply stable power.

These codes indicate problems related to the power supply, DC Link voltage levels (either too low or too high), or a fault with the AC input voltage sensor. This can prevent the unit from operating correctly.

This error indicates that the compressor is rotating abnormally or that one of its wires is disconnected.

This error indicates a problem with the current sensor, which monitors the electrical current within the air conditioning system. This can be due to data corruption or an issue with the control board.

The DC-Link voltage sensor has a short circuit or is open, or the DC LINK value is not within its normal range (280~320V).

There is an error when the outdoor unit tries to read or write data from its EEPROM (Electrically Erasable Programmable Read-Only Memory), possibly due to missing option data.

This error typically refers to an Over Temperature Protection fault, meaning a component has become too hot and the system has shut down to prevent damage. This might be related to internal firmware or sensor issues.

This error indicates a malfunction with the temperature sensor associated with the IPM (Intelligent Power Module) or PFCM (Power Factor Correction Module) in the outdoor unit, critical for power management.

These errors indicate either a problem with the temperature sensor for the Inverter Power Module (IPM) or Power Factor Correction Module (PFCM), or that the IPM itself is overheating in the outdoor unit's inverter compressor.

The system has detected an error with the operation or speed of the inverter unit's Fan 2.

The system's hardware has detected an excessive voltage on the DC Link circuit.

The Power Factor Correction (PFC) circuit in the outdoor unit has detected an overload or overcurrent condition.

The input current sensor for Inverter 1 has a short circuit or is open, detecting a problem even when the unit is stopped.

The sensor that measures the input voltage to the inverter has detected an error.

This error indicates that the Intelligent Power Module (IPM) for the outdoor unit's inverter compressor has overheated. This could be due to poor component assembly or restricted airflow.

This error indicates that the 'installation smart install mode' was not successfully completed after the air conditioner installation. The unit will not work until this mode is completed successfully. This is not a malfunction but an indication of an incomplete setup.

This error indicates that the system has detected a refrigerant gas leak. This is a serious issue that can impact cooling/heating performance and potentially harm the environment.

This error indicates an inconsistency in the capacity settings or model information between the outdoor and indoor units, which can prevent proper operation.

There is an error with the option settings on the DPM (Distributed Power Module) remote controller.

The Inverter EEPROM (memory) has a checksum error, indicating potential data corruption or an issue with the stored configuration.

This error indicates a problem with the EEPROM (Electrically Erasable Programmable Read-Only Memory) component or its option settings. The EEPROM stores important configuration data for the unit.

This error indicates a problem with the unit's internal memory (EEPROM) or an inconsistency between the indoor and outdoor unit model settings. E556 specifically refers to a capacity inconsistency between units.

The EEPROM (Electrically Erasable Programmable Read-Only Memory) circuit, which stores critical settings and operating data, has failed. This is an internal component error.

This indicates that the float switch in the condensate drain pan has been activated, signaling that the drain pan is full of water and there's a risk of overflow.

This error means the float switch has detected that the condensate drain pan is full of water, likely due to a clog in the drain line. This mechanism prevents water overflow.

This error indicates an issue with the heat exchanger inlet or outlet temperature sensors in the indoor unit. These sensors monitor refrigerant temperatures within the heat exchanger.

The air conditioner is unable to initiate or continue heating operation due to an internal system check or a conflict in settings. This is a self-diagnostic error.

This self-diagnostic error indicates either a blockage in the high-pressure side of the system or a complete loss of refrigerant. This will prevent the unit from operating.

The indoor unit's fan motor is experiencing an error, which can lead to insufficient airflow and poor cooling or heating performance. This error indicates a problem with the indoor fan's operation.

This indicates a problem with the fan motor located in the indoor air conditioning unit, which circulates air within your room. The fan might not be spinning at the correct speed or has stopped.

This error indicates a problem with the fan motor inside the indoor unit. The fan is crucial for circulating air and proper operation.

This error signals a problem with the temperature sensors that monitor the heat exchanger coils inside the indoor unit. These sensors are crucial for efficient operation.

This indicates an issue with the temperature sensor located inside your indoor air conditioning unit, which is responsible for measuring the room's temperature. It may be due to a faulty connection or a sensor malfunction.

The indoor unit's float sensor has detected an issue, likely indicating a high water level in the drain pan. This is a self-diagnostic error and will cause the unit to turn off.

The indoor unit's evaporator (Eva In) pipe sensor is either open (disconnected) or short-circuited (faulty). This impacts the system's ability to monitor refrigerant temperatures and stops operation.

The indoor unit's room temperature sensor has an open or short circuit, meaning it cannot correctly read the room temperature. This is an indoor sensor error and will cause the unit to turn off.

The indoor pipe sensor, also known as the evaporator inlet sensor, has an open or short circuit. This prevents the unit from monitoring refrigerant temperature correctly and will cause the unit to turn off.

The wired remote controller displays a communication error, indicating a problem with how the indoor unit is communicating with other parts of the system. This error will cause the system to turn off.

The outdoor unit is not receiving a response from one of the indoor units at its assigned address. This indicates a communication breakdown and stops the system from operating.

This error indicates a problem with the temperature sensors on the outdoor unit, such as the outdoor ambient, condenser, or discharge temperature sensors. These are vital for the unit's operating logic.

This error indicates that there might be a blockage in the outdoor unit's valve, leading to unusually high pressure within the system. This can affect cooling or heating performance.

This error suggests a blockage in the outdoor valve, which can lead to high pressure in the refrigerant system and impair the unit's performance.

The outdoor unit fan motor is not operating correctly, which can lead to overheating and system performance issues. This is a self-diagnostic error and will cause the unit to turn off.

The inverter's emission temperature sensor is faulty or incorrectly connected. This leads to an 'Outdoor sensor error' message and prevents proper system operation.

The sensor that measures the outdoor ambient temperature is reporting an error, possibly due to an open or short circuit. This is an outdoor sensor error and will cause the unit to stop operating.

The outdoor unit, specifically a 3-phase product, is not receiving power. This prevents the entire air conditioning system from operating and requires an initial diagnosis of the power supply.

The inverter has detected an abnormal total current or PFC (Power Factor Correction) overcurrent condition. This triggers an outdoor unit protection control error, stopping operation.

The outdoor unit has detected an overload condition, causing the compressor to stop as a protective measure. This indicates the system is under excessive strain and is an outdoor unit protection control error.

This error means there's a problem with the temperature sensor inside the indoor unit that measures the room temperature. It could be an electrical open circuit or a short circuit.

A fault has been detected with outdoor fan 1, triggering a self-diagnostic error and preventing normal operation of the air conditioner.

A thermal fuse has opened, which is a safety mechanism designed to protect the unit from overheating. This indicates that a component has reached an unsafe temperature, causing a system shutdown.

The inverter compressor in the outdoor unit failed to start correctly, triggering a protection control error. This prevents the system from cooling or heating.

This error indicates a problem with the emission (or discharge) temperature sensor in the inverter system, which monitors the temperature of the refrigerant leaving the compressor. This outdoor sensor error will cause the unit to turn off.

The inverter system has detected an excessive total current or an overcurrent in the Power Factor Correction (PFC) circuit, triggering a protection shutdown. The unit will turn off.