Air conditioners display error codes to indicate a fault or problem with the system. Samsung air conditioners have various error codes that can pop up during operation. Understanding and properly troubleshooting these codes is important for resolving issues and keeping your AC running optimally.
In this article, we will provide a detailed overview of the most common Samsung air conditioner error codes, what they mean, their likely causes, and tips for troubleshooting them.
What are Samsung AC Error Codes?
Samsung AC error codes are a series of letters, numbers or a combination of both that appear on the AC display when a malfunction occurs. Some examples include:
- E1, E2, E3 – Indicates an issue with the compressor
- CH02, CH10 – Issues with the outdoor unit
- F1, F2, F3 – Indoor fan errors
These codes help identify the specific problem so it can be corrected. While some may indicate routine maintenance needs, most point to faults that require troubleshooting and repairs.
Understanding and properly diagnosing Samsung AC error codes is key for resolving operating problems quickly.
Most Common Samsung AC Error Codes
Here are some of the most common Samsung AC error codes and how to troubleshoot them:
CL – Auto Clean Indicator
- Meaning: The AC needs cleaning due to odour buildup in the indoor unit.
- Cause: Dirt, mould or mildew in the air filters or coils.
- Solution: Run the Auto Clean cycle and clean or replace filters.
DF – Automatic Deforst
- Meaning: The outdoor unit has detected frost buildup on the coil and is entering defrost mode to melt the frost.
- Cause: Low outdoor temperatures and humidity can cause frost to form on the outdoor coil, reducing performance. The defrost cycle helps clear this frost buildup.
- Solution: No action is needed. The AC will automatically defrost as needed to clear frost from the outdoor coil. Allow the defrost cycle to complete so the AC can resume normal cooling operation.
CF – Filter Reset/Cleaning Required
- Meaning: The air filter is dirty and needs to be cleaned or replaced.
- Cause: Clogged, dirty air filter preventing proper airflow.
- Solution: Clean or replace the air filter.
E4 – Forced Defrost Mode
- Meaning: The AC is undergoing a forced defrost cycle.
- Cause: Low refrigerant, faulty heating components, incorrect sensor readings.
- Solution: Contact a technician to diagnose and service the AC.
E3 – Indoor Fan Malfunction
- Meaning: Issue with the indoor fan motor/blade.
- Cause: Faulty fan motor, loose/broken fan blade.
- Solution: Replace the fan motor or blade.
E5/E6 – Indoor/Outdoor Heat Exchanger Sensor Fault
- Meaning: The respective heat exchanger sensor is defective.
- Cause: Bad sensor that needs replacing.
- Solution: Replace the faulty indoor or outdoor heat exchanger sensor.
E7 – Open/Short Heater Temperature Sensor
- Meaning: The heater temperature sensor has detected an open or short circuit. This sensor monitors the temperature of the indoor unit heater.
- Cause: Faulty, damaged, or disconnected heater temperature sensor. This could be due to electrical issues or physical damage to the sensor or connections.
- Solution: Have a technician inspect the heater temperature sensor and wiring connections. The sensor may need to be replaced if faulty. Check for any damage to wires or loose connections.
C2 – Indoor Pipe Sensor Fault
- Meaning: The indoor pipe (coil) sensor is defective.
- Cause: Faulty pipe sensor.
- Solution: Replace the indoor coil pipe sensor.
E101 – Failed Communication with Indoor Unit
- Meaning: Communication error between indoor unit components.
- Cause: Loose wiring connections and electrical issues.
- Solution: Inspect wiring and connections. It may require a technician.
E102 – Failed Communication Outdoors
- Meaning: There is a communication failure between the indoor and outdoor units. They are unable to transmit signals.
- Cause: Faulty or disconnected communication cable between indoor and outdoor units. Electrical noise interference. Defective outdoor PCB board.
- Solution: Check the communication cable connection between the indoor and outdoor units. Look for loose wiring or damage to the cable. Check for proper cable shielding. Inspect the wiring inside the outdoor unit and replace the PCB if faulty.
EL – Overheated Electrical Heater
- Meaning: The electric heater in the indoor unit has overheated. This is a safety measure to prevent damage.
- Cause: Clogged filter reducing airflow over the heater, fan failure, defective heater temperature limiter, or faulty heater assembly.
- Solution: Clean or replace the air filter if clogged. Check fan operation and heater temperature limiter. An authorized technician may need to inspect and replace the heater assembly if faulty.
E201 – Communication Failure Between Indoor & Outdoor Units
- Meaning: There is no communication between the indoor and outdoor units.
- Cause: Wiring/electrical connection problem.
- Solution: Inspect connections and wiring between units. It may require a technician.
E1/21 – Room Temperature Sensor Fault
- Meaning: The room temperature sensor in the indoor unit is defective or has failed.
- Cause: Faulty, damaged, or disconnected room temperature sensor. This could be due to electrical issues or physical damage.
- Solution: Have a technician inspect the room temperature sensor and wiring connections. The sensor may need to be replaced if faulty. Check for any damage to wires or loose connections.
E1/22 – Heat Exchanger Temperature Sensor Fault
- Meaning: The heat exchanger temperature sensor in the indoor unit is defective or has failed.
- Cause: Faulty, damaged, or disconnected heat exchanger temperature sensor. This could be due to electrical issues or physical damage.
- Solution: Have a technician inspect the heat exchanger temperature sensor and wiring connections. The sensor may need to be replaced if faulty. Check for any damage to wires or loose connections.
E1/54 – Bad Capacitor or Fan Motor
- Meaning: There is an issue with the capacitor or fan motor in the indoor unit.
- Cause: Failed capacitor leading to fan motor issues. Defective fan motor windings.
- Solution: An authorized technician needs to inspect the capacitor and fan motor. The capacitor may need to be replaced if it has failed. The fan motor may also need to be replaced if defective.
E1/63 – Bad EEPROM
- Meaning: There is an issue with the indoor unit’s EEPROM (memory chip).
- Cause: The EEPROM may be improperly coded or defective, causing issues reading/writing data.
- Solution: An authorized technician will need to inspect the EEPROM and likely replace it if faulty. The EEPROM contains important data for operating the AC system.
- Meaning: There is a problem with the outdoor unit condenser temperature sensor. It is not providing the expected feedback.
- Cause: The sensor may be faulty, damaged, or disconnected. This could be due to electrical issues or physical damage to the sensor or wiring.
- Solution: Have a technician inspect the condenser temperature sensor and wiring connections. The sensor may need to be replaced if found to be defective. Check wiring for any loose connections.
– Thoroughly inspect the entire AC unit for any loose, damaged or disconnected wiring. Electrical issues are a common cause of communication errors.
– Check for obstruction of coils and fans. Dirty filters or blockage prevents proper airflow and operation.
– Ensure the outdoor unit is not overexposed to sun or heat. Overheating can cause sensor errors.
– Confirm proper voltage is present at the electrical panel and components. Low voltage also triggers sensor issues.
– Reset the AC power and try running it again after troubleshooting. Error codes may clear after resetting.
– Contact a certified Samsung technician for diagnosis and repairs when in doubt. Most sensor or compressor errors require a pro.
Following Samsung’s troubleshooting steps for a given error code can help isolate the issue. But for complex electrical or compressor problems, professional air conditioner service may be necessary. Being familiar with the error codes makes the issues easier to identify.
Credit: Anisla Tech