Samsung AC Error Code and Solutions 2025

The error codes that come in Samsung’s inverter ACs, then you get upset. If you do not know all these error codes, then a lot of your time goes into it. You have to read this article till the end so that you get complete information about this Samsung AC Error Code and Solutions. If you know the error code then you will be able to solve your problem very quickly.

Samsung air conditioner shows you the error code in two ways, one through the display and one through blinking LED light. Samsung’s air conditioner with a display shows a full error code, but in the light billing display air conditioner, you get confused seeing the light billing, so in this article, I will tell you about both.

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Samsung AC Error Code and Solutions

E101 & E102 Communication Error (Indoor Outdoor)

The error code E101 on Samsung air conditioners indicates a communication error between the indoor and outdoor units. This error occurs when there is a problem with the communication signal between these two units. It can be caused by various factors, including wiring issues, faulty control boards, or electronic component failures.

Solution

Troubleshooting steps include power cycling the unit, checking the wiring for damage, and resetting the AC. If the error persists, it is recommended to seek professional assistance from a certified technician or Samsung customer support.

E121 ROOM Temperature sensor error

The error code E121 on a Samsung air conditioning unit indicates a problem with the room temperature sensor. This sensor is responsible for measuring the temperature in the room and relaying the information to the AC unit. When the sensor malfunctions or encounters an error, it can lead to issues with the AC’s performance.

Solution

To troubleshoot, you can try resetting the AC unit, checking the sensor wiring for loose connections, cleaning the sensor to remove any debris, and if necessary, replacing the sensor.

E122 INDOOR MID, INDOOR IN PIPE- temperature sensor error

The error code E122 on a Samsung air conditioner refers to an issue with the indoor mid sensor or the indoor in-pipe temperature sensor. This error indicates that there is a problem with the temperature-sensing mechanism in your air conditioner.

Solution

To address this issue, follow these troubleshooting steps. First, turn off the AC and disconnect it from the power source. Allow a few minutes for the system to reset. Check for any obstructions or blockages around the indoor unit or air vents that may be interfering with the sensor’s readings. Clean or replace the filters to ensure proper airflow, as dirty filters can impact temperature accuracy.

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E154 Fan Error (Indoor)

The error code E154 on a Samsung air conditioner indicates a “Fan Error” in the indoor unit. This error typically occurs when there is a problem with the indoor fan motor or its related components. The fan motor is responsible for circulating air within the indoor unit and throughout the room.

Solution

To troubleshoot the issue, start by turning off the air conditioner and checking for any obstructions that may be blocking the fan blades. If no obstructions are found, manually rotate the fan to ensure it moves freely. Next, reset the unit by unplugging it and powering it back on. If the error persists, it is recommended to contact a professional technician or Samsung customer support for further assistance.

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E162 EEPROM Error (Indoor)

The error code E162 on a Samsung air conditioner indicates an EEPROM (Electrically Erasable Programmable Read-Only Memory) error, specifically for the indoor unit. The EEPROM is a component that stores important data and settings for the air conditioner.
When this error occurs, it typically means that there is an issue with the EEPROM or its communication with other components of the air conditioner. The exact cause of the error can vary, but it may be due to a faulty EEPROM chip, a loose connection, or a malfunctioning control board.

Solution

To troubleshoot, try powering off and on the unit, resetting it, and checking connections. If the error persists, it’s advisable to seek professional assistance from an HVAC technician or Samsung customer support.

E203 Time out Comm. (Inv Micom Main Micom)

The error code E203 on a Samsung air conditioner typically indicates a communication timeout issue between the Inverter Micom (Inv Micom) and the Main Micom. This error suggests a problem with the communication signal between these two components of the air conditioner.

Solution

To troubleshoot, turn off the air conditioner, wait for a few minutes, and then power it back on. If the error persists, seek professional help from Samsung customer support or an HVAC technician.

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E221 OUT-TH(Outdoor Temperature) Sensor Error

The error code E221 on a Samsung air conditioner indicates an issue with the OUT-TH (Outdoor Temperature) sensor. This sensor is responsible for measuring the temperature outside the air conditioning unit.

Solution

To troubleshoot, power off the unit, check the sensor for damage or debris, clean it gently if necessary, inspect the sensor wiring for loose or damaged connections, and reset the air conditioner. If the error persists, contact Samsung customer support or a professional technician.

E231 CON-TH(Cond Temperature) Sensor Error

Error code E231 commonly indicates a problem with the CON-TH (Condensation Temperature) sensor. This sensor is responsible for measuring the temperature of the condenser coil in the outdoor unit.

Solution

To troubleshoot, power off the unit, check the sensor wiring for secure connections, clean the sensor, and restart the air conditioner. If the error persists, seek assistance from a professional technician or Samsung customer support.

E251 DIS-TH(Discharge Temperature) Sensor Error

This error indicates a problem with the temperature sensor responsible for monitoring the discharge temperature of the air conditioner. When this error occurs, it usually means that the sensor is faulty, damaged, or experiencing a communication issue. The sensor may be providing inaccurate temperature readings, or it may not be transmitting any data at all.

Solution

To resolve this error, you can try powering off the unit, checking the sensor connections, cleaning the sensor, and restarting the air conditioner. If the error persists, it is advisable to contact a qualified technician.

E416 DIS-TH(Discharge Temperature) Over Error

The error code E416 on a Samsung air conditioner refers to a “DIS-TH” error, which stands for “Discharge Temperature Over.” This error indicates that the discharge temperature of the air conditioner has exceeded the acceptable limit.

Solution

To address the error, turn off the air conditioner, check for obstructions and refrigerant leaks, inspect the compressor, and contact a professional technician if necessary.

E422 EEV or Valve Close error-Self diagnosis

This error typically occurs when there is a problem with the electronic expansion valve or its associated components. The electronic expansion valve is responsible for regulating the flow of refrigerant through the air conditioning system. It controls the amount of refrigerant entering the evaporator coil, which affects the cooling capacity of the unit.

Solution

To troubleshoot, try turning off the air conditioner, checking for visible issues like loose connections or obstructions, and performing a power reset. If the error persists, it is advisable to seek professional assistance from a technician.

E440 Prohibit Operation Condition Error (Heating)

The E440 error code on a Samsung air conditioner indicates a “Prohibit Operation Condition Error (Heating).” It occurs when the unit detects an issue preventing it from operating in heating mode. Possible causes include temperature limits, sensor problems, airflow obstructions, or technical malfunctions.

Solution

To resolve the error, ensure the room temperature is within the acceptable range, check for obstructions, and restart the unit. If the problem persists, contact Samsung customer support.

E441 Prohibit Operation Condition Error (Cooling)

The error code E441 on a Samsung air conditioner indicates a “Prohibit Operation Condition Error (Cooling).” This error usually occurs when the air conditioner’s cooling function is disabled due to certain conditions or faults.

Solution

To troubleshoot this error, follow these steps check temperature settings, Clean or replace air filters, Remove obstructions from intake and outlet vents, Verify the power supply, and Reset the unit.
If the error persists, contact Samsung customer support or an HVAC technician.

E458 Fan Error(Outdoor)

The error code E458 on a Samsung air conditioner indicates a “Fan Error (Outdoor)” problem. This error typically occurs when there is an issue with the outdoor fan motor or its related components.

Solution

To troubleshoot, check for obstructions, power cycle the unit, inspect the fan motor for damage, and examine the capacitor. If the issue persists, contact a professional technician.

E461 Compressor Starting Error

The error code E461 on a Samsung air conditioner refers to a “Compressor Starting Error.” This error indicates a problem with the compressor, which is responsible for cooling the air in the unit. When the compressor fails to start properly, it can result in inadequate cooling or no cooling at all.

Solution

To resolve this issue, try unplugging the unit, checking and securing wiring connections, cleaning the air filters, and ensuring an adequate power supply. If the problem persists, it is advisable to contact a professional HVAC technician.

E462 AC Input I_Limit Trip Error

The error code E462 on a Samsung air conditioner indicates an AC input current limit trip error. This error typically occurs when the input current exceeds the specified limit.

Solution

To resolve this issue, start by powering off the air conditioner and checking the power supply for stability and proper specifications. Reduce the load on the circuit by disconnecting other appliances. Inspect the wiring connections and ensure they are secure. Additionally, clean or replace the air filters to improve airflow and efficiency. If the error persists, it is advisable to seek professional assistance from an HVAC technician.

E464 IPM Over Current(O.C) Error

The error code E464 on a Samsung air conditioner refers to an IPM (Intelligent Power Module) Over Current (O.C) error. This error indicates that there is an excessive current flowing through the IPM, which is a component responsible for controlling the compressor motor.

Solution

To resolve the issue, first, power off the unit and wait for a few minutes. Check for any visible issues like loose connections or damaged wires. Then, power on the air conditioner and observe its operation. If the error persists, it’s recommended to contact a professional technician.

E465 Comp V_limit/I_limit Error

The error code “E465 Comp V_limit/I_limit Error” for a Samsung air conditioner typically indicates a problem with the compressor voltage or current limits. This error is usually triggered when the voltage or current supplied to the compressor exceeds the predefined limits.

Solution

To troubleshoot, you should power off the unit, check the electrical connections, measure the voltage and current supplied to the compressor, and reset the error code if possible. If the problem persists, it is recommended to seek help from an authorized service centre or HVAC technician.

E466 DC-Link Voltage Under/Over Error

The error code E466 on a Samsung air conditioner indicates a DC-Link Voltage Under/Over Error. This error typically occurs when there is a problem with the DC power supply voltage in the system.

Solution

To troubleshoot, power off the unit, check the power supply for stability, and reset the air conditioner. If the error persists, contact Samsung customer support or a qualified technician

E467 Comp Wire Missing Error

The error code E467 on a Samsung air conditioner indicates a communication wire missing error. This error typically occurs when there is a problem with the wiring connections between different components of the air conditioner system.

Solution

To resolve this issue, you should check and secure all wiring connections, inspect for any damaged wires, and reset the air conditioner.

E468 Current Sensor Error

The error code E468 on a Samsung air conditioner refers to a “Current Sensor Error.” This error indicates a problem with the current sensor in the air conditioner unit. The current sensor is responsible for measuring the electrical current flowing through the system.

Solution

To troubleshoot, turn off the power, check wiring connections, and reset the unit. If the error persists, contact a professional or Samsung customer support.

E469 DC-Link Voltage Sensor Error

The error code E469 on a Samsung air conditioner refers to a DC-Link Voltage Sensor Error. This error indicates a problem with the DC voltage sensing circuit in the air conditioner unit. The DC-Link voltage sensor is responsible for monitoring the voltage levels in the DC power supply circuit.

Solution

Troubleshooting steps include power cycling, checking wiring connections, inspecting the sensor for damage, and contacting a qualified technician.

E470 EEPROM Data Error (no data)

The error code “E470 EEPROM Data Error (no data)” in Samsung air conditioners indicates a problem with the EEPROM (Electrically Erasable Programmable Read-Only Memory) data. This error typically occurs when there is no data or a communication issue with the EEPROM.

Solution

To troubleshoot, power off the unit, reset it after a few minutes, and check the wiring for any loose or damaged connections.

E471 EEPROM Data Error (Main Micom Inv Micom)

The error code E471 on Samsung air conditioners refers to an EEPROM (Electrically Erasable Programmable Read-Only Memory) data error between the main Micom (Microcomputer) and the Inverter Micom. The Micom is the control unit responsible for managing the operation of the air conditioner.

Solution

Try power cycling the unit by unplugging it for a few minutes. If the error persists, contact a professional technician.

E474 & E500 Heatsink Sensor Error

The error code “E474” on a Samsung air conditioner refers to a “Heatsink Sensor Error.” This error indicates a problem with the sensor that measures the temperature of the heatsink, which is responsible for cooling the air conditioner’s internal components.

Solution

To resolve it, try power cycling the unit, checking the sensor connection, cleaning the sensor, and restarting the air conditioner. If the error persists, contact a technician.

E483 Over Voltage Protection Error

The error code E483 on a Samsung air conditioner indicates an “Over Voltage Protection Error.” This error occurs when the voltage supplied to the air conditioner exceeds the permissible range.

Solution

To troubleshoot, power off the unit, check the power supply and ensure stable voltage. Wait and restart the air conditioner. If the error persists, contact customer support or an HVAC technician.

E484 PFC Over Load Error

When the E484 ERROR PFC circuitry is overloaded, it can cause the air conditioner to shut down or display an error code. This error may be caused by various factors, including power supply issues, faulty components, or electrical abnormalities.

Solution

Ensure that the power supply to the air conditioner is stable and within the required voltage range. Fluctuations or insufficient voltage can cause the PFC overload error. If the power supply is unstable, consider using a voltage stabilizer or contacting an electrician to address the power issue.

E485 Input Current Sensor Error

The error code “E485 Input Current Sensor Error” on a Samsung air conditioner indicates a problem with the input current sensor. This sensor is responsible for monitoring the electrical current flowing into the unit. When it detects an issue with the input current, such as an abnormal or inconsistent reading, it triggers this error code.

Solution

Ensure that the air conditioner is receiving a stable power supply. Check the power outlet, circuit breaker, and power cord for any signs of damage or loose connections. If there is an issue, address it accordingly.

E488 AC Input Voltage Sensor Error

The error code E488 on a Samsung air conditioner refers to an AC Input Voltage Sensor Error. This error indicates a problem with the voltage sensor that measures the input voltage from the power supply.

Solution

Ensure that the power supply to the air conditioner is stable and within the required voltage range. Make sure there are no voltage fluctuations or power surges that could be causing the sensor error.

E554 Gas Leak Error

The error code E554 on a Samsung air conditioner indicates a gas leak. This error is specifically related to a problem with the refrigerant gas in the system. When the air conditioner detects a gas leak, it triggers the E554 error code to alert the user about the issue.

Solution

Contact a professional technician or Samsung customer service to report the issue and schedule a repair. Avoid using the air conditioner until the gas leak is resolved to prevent safety risks and further damage.

Samsung Air Conditioner Light Blinking Display Error Code

Samsung Air Conditioner Light Blinking Display Error Code

FAQs: Samsung AC Error Code and Solutions

1. What should I do if my Samsung air conditioner displays an error code?

When you encounter an error code on your Samsung air conditioner, the first step is to refer to the user manual or the manufacturer’s website to identify the specific error code. Once you have the error code, you can determine the appropriate troubleshooting steps to resolve the issue. If you are unable to find a solution, contacting Samsung customer support or a professional HVAC technician is recommended.

2. How do I reset the error code on my Samsung air conditioner?

To reset the error code on a Samsung air conditioner, follow these general steps:
1. Turn off the air conditioner and unplug it from the power source.
2. Wait for approximately 10 minutes to allow the system to reset.
3. Plug the air conditioner back in and turn it on.
4. Check if the error code has cleared. If not, you may need to perform additional troubleshooting steps 5, or contact Samsung customer support.

Conclusion

Remember, these are general steps, and the specific solution may vary depending on the error code and the model of your Samsung air conditioner. It’s always recommended to refer to the manufacturer’s documentation and seek professional assistance when necessary.

I hope this article about the Samsung AC Error Code and Solutions helped you to find issues regarding your AC. If you still have any questions or confusion in your mind, then you can ask me in the comment section, and I will answer your question.

Jitendro Dubey

Jitendro Dubey is an Electrical Engineer. He has completed his engineering from a private college in West Bengal. He is currently doing an IT job at TCS Kolkata. His favourite topics are laptops and electronic gadgets. To earn some extra money he started content writing in this website.

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