Daikin Aircon Error Codes And How To Fix Them

By Author: Coolcare
Total Articles: 4
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Daikin air conditioners are known for their reliability and advanced features, but like any electrical appliance, they can occasionally run into issues. When problems occur, Daikin air conditioners usually display error codes to help users or technicians identify the issue quickly. Understanding these error codes and how to fix them can save you time and money on repairs. Below is a comprehensive guide on common Daikin air conditioner error codes and how to fix them.
Daikin Aircon
1. E1 Error Code - Indoor Sensor Error
Cause:
The E1 error typically indicates an issue with the indoor temperature sensor. This sensor monitors the temperature inside the room and sends data to the AC control system. If the sensor malfunctions or the wiring becomes loose, the E1 error will appear.
How to Fix:
Check the Sensor: Inspect the sensor for visible damage. If it's dirty, clean it carefully with a soft cloth.
Inspect the Wiring: Ensure all the wires are properly connected. If the connection is loose or damaged, it may need to be repaired or replaced.
Replace the Sensor: If the sensor is faulty, ...
... it will need to be replaced. In this case, it's best to call a professional technician. View more
2. E2 Error Code - Outdoor Unit Temperature Sensor Error
Cause:
The E2 error typically points to a problem with the outdoor unit's temperature sensor. This sensor monitors the temperature of the refrigerant and the surrounding air. A failure here can affect the overall functioning of the air conditioner.
How to Fix:
Clean the Outdoor Unit: Make sure that the outdoor unit is not obstructed by dirt, debris, or leaves. A blocked unit can cause the temperature sensor to malfunction.
Check the Sensor: Inspect the sensor for signs of damage or wear. If needed, clean it gently or replace it.
Check for Wiring Issues: Ensure that the wiring connecting the sensor to the control board is secure and free from corrosion.
3. E3 Error Code - Room Temperature Sensor Fault
Cause:
The E3 error code usually appears when there is a problem with the room temperature sensor, which is critical for the air conditioner’s temperature regulation.
How to Fix:
Inspect the Sensor and Wiring: Check for any visible issues with the room temperature sensor and its wiring. Loose connections or damaged wires are common culprits.
Reset the Air Conditioner: Unplug the unit for a few minutes and plug it back in to reset the system. If the error persists, the sensor may need replacement.
Call a Technician: If you’re unable to resolve the issue, it’s best to call a technician to diagnose and replace the sensor if needed.
4. E4 Error Code - Overcurrent Protection
Cause:
The E4 error is triggered when the AC detects an overcurrent situation. This can be due to issues like a faulty compressor or problems with the electrical system.
How to Fix:
Turn Off and Reset the Unit: First, turn off the AC and unplug it from the electrical socket. Wait for a few minutes and then plug it back in to reset the unit.
Inspect the Compressor: The compressor could be malfunctioning. If it's not working properly, you might need a professional to inspect and possibly replace the compressor.
Check the Electrical Supply: Ensure that your power supply is stable and that no overloading or short circuits are causing issues.
5. E5 Error Code - Reverse Phase Protection
Cause:
This error code indicates that there is a problem with the power supply phase. Daikin air conditioners are designed to work with three-phase power systems, and if the phases are reversed, the system will trigger the E5 error to protect the internal components.
How to Fix:
Check Power Supply: Verify that the power supply is correctly connected and that all three phases are functioning properly.
Consult an Electrician: If the power phases are reversed, you’ll need to consult a licensed electrician to correct the wiring.
6. E6 Error Code - Communication Error Between Indoor and Outdoor Units
Cause:
The E6 error code indicates that the AC is unable to establish proper communication between the indoor and outdoor units. This could be due to faulty wiring or issues with the control board.
How to Fix:
Check the Wiring: Inspect all connections between the indoor and outdoor units. Look for any loose or disconnected wires and re-secure them.
Reset the System: Turn off the air conditioner, wait a few minutes, and turn it back on. This can sometimes help the system reset and resolve communication errors.
Check for System Updates: In some cases, a firmware update might be needed to resolve communication issues. Contact Daikin support for assistance.
7. E7 Error Code - Faulty Inverter Board
Cause:
The E7 error typically signals a fault with the inverter board, which controls the speed of the compressor and helps regulate the unit’s efficiency.
How to Fix:
Turn Off the Unit: Switch off the air conditioner immediately to prevent further damage to the inverter board.
Inspect the Inverter Board: If you're comfortable with electronics, you can inspect the inverter board for visible signs of damage, such as burnt components.
Replace the Inverter Board: In most cases, if the inverter board is faulty, it will need to be replaced. Contact a professional technician for this repair.
8. E9 Error Code - Refrigerant Leak
Cause:
An E9 error generally indicates a refrigerant leak or insufficient refrigerant levels in the system. This can lead to inefficient cooling and potential long-term damage if not addressed.
How to Fix:
Inspect for Leaks: Check the system for signs of a refrigerant leak. If you notice a hissing sound or frost accumulation, there may be a leak.
Call a Technician: A refrigerant leak requires professional repair. A technician will need to locate and seal the leak, and then recharge the refrigerant to the appropriate level.
9. E10 Error Code - Drainage Error
Cause:
The E10 error typically appears when there’s an issue with the drainage system of the air conditioner. It could be caused by a clogged or blocked drainage pipe, preventing the unit from draining condensate effectively.
How to Fix:
Clear the Drainage Pipe: Check the drainage pipe for any blockages and clear it if necessary.
Inspect the Condensate Pump: If the unit uses a condensate pump, ensure it’s working properly. If the pump is faulty, it will need to be replaced.
Conclusion
Dealing with error codes on your Daikin AC can be a stressful experience, but knowing what these codes mean and how to address them can help make the process much smoother. While some issues, like dirty filters or clogged drain lines, can be addressed by the user, others—such as refrigerant leaks, electrical issues, and faulty sensors—may require professional intervention. Always exercise caution, and when in doubt, contact a certified technician to ensure your AC is properly repaired and maintained. Regular maintenance, such as cleaning filters and checking for debris around the outdoor unit, can also prevent many common issues from arising in the first place.
Contact information:
Call: +65 90235452 (or) WhatsApp us: https://wa.me/6590235452

11 Mandai Estate,
Singapore -729908.
Mail ID: info@coolcare.com.sg

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