Samsung AC Error Codes: Complete List and Troubleshooting
Find the complete list of Samsung Air Conditioner error codes and troubleshooting tips for common AC issues. Learn how to fix cooling problems and get expert Samsung AC repair services in Bhubaneswar and Odisha.
Samsung air conditioners are known for their performance and durability, but like any electronic appliance, they may occasionally show error codes to indicate malfunctions. These error codes are essential for identifying and addressing issues quickly, saving time and effort in fixing the problems. Below is a list of Samsung AC error codes, along with their possible causes and solutions.
**1. E1 – Indoor Unit Sensor Error
Cause: This error indicates a malfunction with the indoor unit’s temperature sensor, which is crucial for regulating the air conditioner’s cooling or heating functions.
Solution: Inspect the sensor for dirt or damage. If cleaning doesn’t fix the issue, it may need to be replaced by a technician.
**2. E2 – Outdoor Unit Sensor Error
Cause: The E2 error code points to a malfunction in the outdoor unit’s temperature sensor. This could affect the system’s ability to cool or heat the space effectively.
Solution: Check for any visible damage to the sensor. If the issue persists, the sensor may need to be replaced by a technician.
**3. E3 – Communication Error Between Indoor and Outdoor Units
Cause: The E3 code signifies a failure in communication between the indoor and outdoor units, usually due to wiring issues or faulty connections.
Solution: Check the wiring between the indoor and outdoor units. If the connections appear intact, the control board may need to be replaced or repaired by a professional.
**4. E4 – High Pressure Protection
Cause: This error is triggered when the system detects high refrigerant pressure, which could be caused by a blocked filter, poor airflow, or an overcharge of refrigerant.
Solution: Clean the air filters and ensure there are no blockages in the system. If the error persists, consult a technician to check the refrigerant levels and adjust them if necessary.
**5. E5 – Low Pressure Protection
Cause: The E5 error code indicates that the refrigerant pressure is too low, typically due to a refrigerant leak or insufficient refrigerant levels.
Solution: If you suspect low refrigerant, call a professional technician to check for leaks and recharge the refrigerant.
**6. E6 – Outdoor Unit Communication Error
Cause: This error occurs when the outdoor unit is unable to communicate with the main control system, usually due to a fault in the outdoor unit’s circuit board or communication wiring.
Solution: Inspect the wiring between the outdoor unit and the control system. If the wiring appears intact, a technician will need to inspect the circuit board for issues.
**7. E7 – Overcurrent Protection
Cause: E7 occurs when an overcurrent is detected in the system, possibly caused by a short circuit or malfunctioning electrical components.
Solution: Check the circuit breaker and ensure the AC is receiving stable power. If the error continues, consult an electrician or technician to inspect the unit’s internal electrical components.
**8. F0 – Indoor Unit Malfunction
Cause: The F0 error code indicates a general malfunction in the indoor unit, often related to issues with the fan motor or the control board.
Solution: Turn off the unit and inspect the fan and control board for visible damage. If you cannot find a solution, call a technician to check for internal issues.
**9. F1 – Indoor Unit Circuit Board Error
Cause: This error points to a malfunction with the indoor unit’s circuit board, which controls the AC’s operation.
Solution: A faulty circuit board may need to be replaced. You can check the circuit board for visible damage, but it is often best to have a technician handle this repair.
**10. F3 – Outdoor Temperature Sensor Error
Cause: The F3 error code signals a malfunction with the outdoor unit’s temperature sensor, which is essential for the AC’s cooling and heating functions.
Solution: Inspect the outdoor temperature sensor for damage or dirt. If cleaning doesn’t resolve the issue, you may need to replace the sensor.
**11. F4 – Faulty Humidity Sensor
Cause: The F4 code indicates a malfunction with the humidity sensor, which regulates moisture levels in the air. This can affect the system’s cooling and dehumidifying abilities.
Solution: Clean the humidity sensor or replace it if damaged.
**12. U0 – General Unit Error
Cause: This error occurs when there is an unspecified issue with the air conditioning unit. It can result from a variety of internal problems, including sensor malfunctions or electrical failures.
Solution: Try resetting the unit by turning it off and unplugging it for a few minutes. If the error continues, contact a technician to diagnose and repair the problem.
**13. U1 – High Voltage Protection
Cause: The U1 error code is triggered when the AC detects a high voltage, which could damage sensitive components like the compressor and control board.
Solution: Check your home’s power supply and ensure it is stable. If high voltage continues to be an issue, consider installing a surge protector or voltage stabilizer to protect your AC from electrical fluctuations.
**14. U2 – Low Voltage Protection
Cause: This error indicates that the AC is receiving low voltage, which can prevent the unit from working efficiently.
Solution: Ensure that the AC is receiving a stable and sufficient power supply. If voltage issues persist, using a voltage stabilizer may be necessary.
**15. U3 – Internal Communication Error
Cause: U3 signifies a communication error within the internal components of the air conditioner, often related to the control board or other electrical systems.
Solution: A technician will need to inspect the system’s internal wiring and components to identify and resolve the communication error.
Explore the complete list of Samsung Air Conditioner error codes and troubleshooting solutions for common AC issues. Get expert advice on fixing cooling problems and find reliable Samsung AC repair services in Bhubaneswar and Odisha.
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| Code | Possible Cause |
|---|---|
| Ch | Prohibit starting during operation of the Crack case heater |
| E108 | Error due to repeated communication address |
| E121 | Error on room temperature sensor of indoor unit (Short or Open) |
| E122 | Error on EVA IN sensor of indoor unit (Short or Open) |
| E123 | Error on EVA OUT sensor of indoor unit (Short or Open) |
| E124 | Communication error sends from indoor unit |
| E128 | Indoor unit EVA IN sensor breakaway |
| E129 | Indoor unit EVA OUT sensor breakaway |
| E131 | Indoor unit heater sensor error |
| E151 | Indoor unit EEV open failure(When 2* detection) |
| E152 | Indoor unit EEV close failure(When 2“ detection) |
| E153 | Indoor unit floating S/V error(When 2“ detection) |
| E154 | Indoor unit fan error |
| E162 | Outdoor unit EEPROM error |
| E198 | Error on thermal fuse of indoor unit (Open) |
| E201 | Communication error between indoor unit and outdoor unit (Pre tracking failure or when actual number of indoor units are different from the indoor unit quantity setting on the outdoor unit) Error due to communication tracking failure after initial power supply (The error occurs with the failure regardless of the number of devices) |
| E202 | Communication error between indoor and outdoor unit (When not received in every room after completing the tracking) |
| E203 | Communication error between outdoor unit inv – main micom (For PF #4~#6 controller, error will be determined from the time when compressor turns on) |
| E221 | Error on outdoor temperature sensor (Short or Open) |
| E231 | Error on outdoor COND OUT sensor (Short or Open) |
| E241 | COND OUT sensor breakaway |
| E251 | Digital comp.1 discharge temperature sensor(Short or Open) |
| E256 | Fixed comp.1 discharge temperature sensor(Short or Open) |
| E257 | Fixed comp.2 discharge temperature sensor(Short or Open) |
| E258 | Fixed comp.3 discharge temperature sensor(Short or Open) |
| E262 | Fixed compl Discharge temperature sensor breakaway |
| E263 | Fixed comp2 Discharge temperature sensor breakaway |
| E264 | Fixed comp3 Discharge temperature sensor breakaway |
| E265 | Digital compl Sump temperature sensor breakaway. Fixed compl Sump temperature sensor breakaway |
| E267 | Fixed comp2 Sump temperature sensor breakaway |
| E268 | Fixed comp3 Sump temperature sensor breakaway |
| E269 | Suction temperature sensor breakaway |
| E271 | Comp.1 Sump temperature sensor(Short or Open) |
| E291 | High pressure sensor(Short or Open) |
| E296 | Low pressure sensor(Short or Open) |
| E307 | Oil balance sensorl (Short or Open) |
| E308 | Suction sensor(Short or Open) |
| E311 | Double pipe sensor(Short or Open) |
| E320 | Error on OLP sensor (Short or Open) |
| E403 | Compressor down due to freeze protection control |
| E404 | System stop due to overload protection control |
| E407 | Comp, down by high pressure |
| E410 | Comp, down by low pressure |
| E413 | Comp, down by the sump protection control |
| E416 | Comp, down by the discharge temperature sensor |
| E422 | Blockage detected on high pressure pipe |
| E425 | Reverse phase or open phase |
| E428 | Comp down by compression ratio control |
| E431 | Equal oil valve 1 self diagnosis |
| E440 | Heating operation restricted at outdoor temperature overheating value (default: 30 °C) |
| E441 | Cooling operation restricted at outdoor temperature below cool value (default 0°Q |
| E442 | Forbid an operation during heat mode with refrigerant charging operation when outdoor temperature is over 15°C |
| E443 | Start prohibition by refrigerant pressure error |
| E452 | Instant power off error |
| E453 | Fan motor hifi temperature error |
| E454 | Fan motor RPM error |
| E455 | Fan motor IPM high temperature error |
| E456 | Fan motor over current error |
| E457 | Fan motor reverse rotation error |
| E458 | Fan speed error |
| E461 | Error due to operation failure of inverter compressor |
| E461 | CTJow current |
| E462 | System stop due to full current control |
| E463 | System stop due to OLP temperature control |
| E464 | System stop due to DC Peak |
| E465 | Compressor overload prevention |
| E466 | DC-Link voltage under/over error |
| E467 | Error due to abnormal rotation of the compressor or unconnected wire of compressor |
| E468 | Error on current sensor (Short or Open) |
| E469 | Error on DC-Link voltage sensor (Short or Open) |
| E470 | Outdoor unit EEPROM Read/Write error (Option) |
| E471 | Outdoor unit EEPROM Read/Write error (H/W) |
| E472 | AC Line Zero Cross Signal out |
| E473 | Comp Lock error |
| E474 | Error on IPM Heat Sink sensor of inverter 1 (Short or Open) |
| E475 | Error of inverter fan 2 |
| E484 | PFC Overload (Over current) Error |
| E485 | Error on input current sensor of inverter 1 (Short or Open) |
| E500 | IPM over heat error on inverter 1 |
| E508 | Smart install is not installed |
| E554 | Gas leak detected |
| E556 | Error due to mismatching capacity of indoor and outdoor unit |
| E557 | DPM remote controller option error |
| E560 | Switch option setting error(rvot applied) |
| E590 | Inverter EEPROM Checksum error |
| E660 | Error of inverter Boot Code |
| P701 | Indoor unit floating S/V error(When 1“ detection) |
| P702 | Indoor unit EEV close failure(When 1“ detection) |
| P703 | Indoor unit EEV open failure(When 1“ detection) |
Final Thoughts:
Samsung AC error codes are designed to help you troubleshoot common issues quickly. While many problems can be addressed through basic maintenance or simple fixes, some require professional attention. For issues related to refrigerant, sensors, or circuit boards, it’s always best to contact a certified technician to prevent further damage and ensure your air conditioner operates at peak performance. Regular servicing and attention to error codes can help maintain your Samsung AC’s longevity and efficiency.
