We have compiled some of the most common error codes for Samsung ACs:
Error Codes and Descriptions
Below is an updated table containing the error codes and their details, causes, and possible solutions:
| Error Code | Description | Possible Causes and Solutions |
|---|---|---|
| E101, E102 | Communication Error (Indoor – Outdoor) | – Check communication cable connections. – Ensure no nearby electromagnetic interference. – Inspect cables and replace if necessary. |
| E121 | Room Temperature Sensor Error | – Verify sensor location and replace if necessary. |
| E122 | Indoor Pipe Temperature Sensor Error | – Inspect and replace indoor pipe temperature sensors. |
| E154 | Fan Error (Indoor) | – Check the fan’s condition and its connection. – Replace the fan if needed. |
| E162 | EEPROM Error (Indoor) | – Contact a technician to replace or reprogram the EEPROM. |
| E163 | Option Error | – Verify system configuration and make corrections as per the user manual. |
| E203 | Communication Timeout (Main Micom and Inverter Micom) | – Check connections and replace faulty components if necessary. |
| E221 | Outdoor Temperature Sensor Error (OUT-TH – Outdoor Temp) | – Inspect connections and replace the sensor if required. |
| E231 | Condenser Temperature Sensor Error (CON-TH – Condenser Temp) | – Check and replace the affected sensor. |
| E251 | Discharge Temperature Sensor Error (DIS-TH – Discharge Temp) | – Inspect connections and replace the sensor if needed. |
| E416 | Overheating of Discharge Temperature Sensor | – Check air circulation and ensure proper system functioning. |
| E422 | EEV or Valve Closure Error – Self-diagnosis | – Inspect the valve and its connections. Replace if required. |
| E440 | Prohibition Condition Error (Heating) | – Review heating mode settings and adjust as necessary. |
| E441 | Prohibition Condition Error (Cooling) | – Review cooling mode settings and adjust as necessary. |
| E458 | Fan Error (Outdoor) | – Check the outdoor unit fan and its connections. |
| E461 | Compressor Start Error | – Inspect the compressor start system and perform necessary repairs. |
| E462 | AC Input Current Limit Error | – Check AC input current limit and adjust as needed. |
| E464 | IPM Overcurrent Error (O.C) | – Inspect the IPM power module and replace it if required. |
| E465 | Compressor Voltage/Current Limit Error | – Verify voltage/current limits of the compressor and adjust if needed. |
| E466 | DC-Link Voltage Low/High Error | – Review the DC-Link voltage and make adjustments as necessary. |
| E467 | Missing Compressor Cable Error | – Inspect compressor cable connections and repair if required. |
| E468 | Current Sensor Error | – Inspect and replace the current sensor as needed. |
| E469 | DC-Link Voltage Sensor Error | – Inspect and replace the DC-Link voltage sensor as needed. |
| E470 | EEPROM Data Error (No data) | – Verify EEPROM data presence and replace it if required. |
| E471 | EEPROM Data Error (Main Micom and Inverter Micom) | – Check EEPROM data in the Main Micom and Inverter Micom. Replace EEPROM if necessary. |
| E474 | Heat Sink Sensor Error | – Inspect and replace the heat sink sensor as needed. |
| E483 | Overvoltage Protection Error | – Check voltage conditions and make necessary adjustments. |
| E484 | PFC Overload Error | – Review PFC load conditions and adjust if necessary. |
| E485 | Input Current Sensor Error | – Inspect and replace the input current sensor as needed. |
| E488 | AC Input Voltage Sensor Error | – Inspect and replace the AC input voltage sensor as needed. |
| E500 | Heat Sink Overheating Error | – Verify air circulation to the heat sink and make adjustments if necessary. |
| E554 | Gas Leak Error | – Inspect the system for refrigerant leaks and repair as needed. |
How to Identify an Error Code in Samsung Split Air Conditioners?
- Error Display on the Indoor Unit:
- If the indoor unit has a display, the error code will appear directly on it. For example, it may show something like “E101” or “E122.”
- Blinking Lights on the Indoor Unit:
- In some models, the error is indicated through a series of blinking LED lights. Refer to the user manual to decode the blinking pattern.
- Using a Remote Control:
- Many Samsung models allow error code detection through the remote control. Follow these steps:
- Turn off the unit using the remote control.
- Press and hold the “Mode” button (or another specific button mentioned in your manual) until the error code appears on the remote control display.
- Many Samsung models allow error code detection through the remote control. Follow these steps:
- Smart Diagnosis:
- For Wi-Fi-enabled models, the Samsung app can provide the error code and a brief description.
What to Do When an Error Code Appears?
If your Samsung air conditioner displays an error code:
- Refer to the User Manual:
- Check the manual for a description of the error and initial troubleshooting steps.
- Perform Basic Inspections:
- Ensure that power is connected and no fuses have blown.
- Confirm that filters are clean and airflow is not obstructed.
- Avoid Opening the Unit Yourself:
- Some errors require specialized tools and knowledge. Opening the unit without proper training may void the warranty or cause further damage.
- Contact an Authorized Technician:
- If the error persists after basic troubleshooting, call a certified Samsung technician for professional assistance.
| Error Codes | Meaning | Probable Cause | Troubleshooting |
|---|---|---|---|
| CL | Auto-clean indicator | Indoor unit producing odors | Execute the “Auto-Clean” command to remove the odor. |
| FQ | Filter cleaning/reset reminder | Dirty filter | Clean/replace the dirty filter in your indoor unit. |
| DF | Auto defrost | Air conditioner is defrosting | Wait for the auto defrost process to complete. |
| E3 | Indoor fan motor malfunction | Faulty indoor fan or circuit board | Replace the faulty indoor fan or circuit board. |
| E4 | Forced defrost | Low refrigerant level, defective pump, broken temperature sensor, or pressure fluctuation | Contact the nearest Samsung service center. |
| E5 | Indoor heat exchanger sensor open/short-circuited | Faulty indoor heat exchanger sensor | Replace the indoor heat exchanger sensor. |
| E6 | Outdoor heat exchanger sensor open/short-circuited | Faulty outdoor heat exchanger sensor | Replace the outdoor heat exchanger temperature sensor. |
| E7 | Heater temperature sensor open/short-circuited | Faulty heater temperature sensor | Replace the heater temperature sensor. |
| C2 | Indoor pipe sensor failure | Faulty indoor pipe sensor | Replace the indoor pipe sensor. |
| E101 | Communication failure (indoor unit) | Loose or faulty power connections around the indoor unit | Check and fix loose or faulty power connections. |
| E102 | Communication failure (outdoor unit) | Loose or faulty power connections around the outdoor unit | Check and fix loose or faulty power connections. |
| EL | Electric heater overheating | Power overload | Replace the heater temperature sensor or PCB. |
| E201 | Communication failure (between indoor and outdoor units) | Loose connections or defective PCB | Check for loose connections indoors and outdoors; if none, replace the main PCB. |
| E1/21 | Room temperature sensor failure | Faulty room temperature sensor | Contact the nearest Samsung service center. |
| E1/22 | Heat exchanger temperature sensor failure | Malfunctioning heat exchanger temperature sensor | Contact the nearest Samsung service center. |
| E1/54 | Faulty capacitor or fan motor | – | Replace the capacitor or fan motor. |
| E1/63 | Faulty EEPROM | – | Replace the EEPROM. |
Error Codes for Multi-System AC Samsung
| Error Code | Description | Possible Causes and Solutions |
|---|---|---|
| E1-01 | Communication Error (unable to receive data) | – Check the communication cable connection. – Inspect cable connections on other indoor units or the indoor PCB. |
| E1-02 | Communication Error (outdoor unit cannot communicate) | – Check cable connections on another indoor unit or the indoor PCB. |
| E1-21 | Room Temperature Sensor Error | – Inspect the room temperature sensor and the connection to the indoor PCB. |
| E1-22 | Indoor Heat Exchanger Temperature Sensor Error | – Inspect the indoor heat exchanger sensor and its connection to the indoor PCB. |
| E1-23 | Outdoor Heat Exchanger Temperature Sensor Error | – Inspect the outdoor heat exchanger sensor and its connection to the indoor PCB. |
| E1-28 | Indoor Heat Exchanger Temperature Sensor Detached | – Inspect the indoor heat exchanger sensor. |
| E1-29 | Outdoor Heat Exchanger Temperature Sensor Detached | – Inspect the outdoor heat exchanger sensor. |
| E1-30 | Both Indoor and Outdoor Heat Exchanger Sensors Detached | – Inspect the indoor and outdoor heat exchanger sensors. |
| E1-54 | Indoor Fan Motor Malfunction | – Inspect the fan motor and wiring in the indoor unit. |
| E1-61 | More than two indoor units in cooling and heating mode simultaneously | – Verify the operation mode of other indoor units. |
| E1-62 | EEPROM Error (Indoor) | – Consult a technician to replace or reprogram the indoor unit’s EEPROM. |
| E1-63 | Option Code Configuration Error | – Verify and adjust the option code as needed. |
| E1-85 | Incorrect Wiring | – Check cable connections between the indoor and outdoor units. |
| E2-01 | Incorrect Number of Paired Indoor Units | – Inspect cable connections between the indoor and outdoor units. |
| E2-51 | Compressor Discharge Sensor Error (Short/Open Circuit) | – Inspect the compressor discharge sensor in the outdoor unit. |
| E5-59 | Outdoor Unit Error | – Consult a technician for diagnosis and repair of the outdoor unit. |
