When your Fujitsu air conditioner displays an error code, it’s trying to tell you something is wrong. Instead of guessing, understanding these codes can help you quickly identify and resolve the issue. In this guide, we’ll go over the most common Fujitsu aircon error codes and what they mean.
Why Do Error Codes Appear?
Fujitsu air conditioners come with a built-in self-diagnosis system. When a problem occurs, the unit displays an error code to help users and technicians pinpoint the issue. This feature makes troubleshooting easier and can help prevent further damage to the system.
Common Fujitsu Aircon Error Codes and Their Meanings
Now, let’s go over some of the most frequent error codes and how to fix them.
E0 – Indoor Unit EEPROM Error
This error occurs when there’s an issue with the indoor unit’s memory chip. Restarting the unit may help. However, if the error persists, a technician should inspect the circuit board.
E1 – Communication Error Between Indoor and Outdoor Units
If your aircon shows an E1 error, the indoor and outdoor units aren’t communicating properly. This can be due to a wiring issue or a faulty PCB. Checking the wiring connections can sometimes fix the problem.
E2 – Zero-Crossing Detection Error
An E2 error means the power supply to the unit is unstable. Resetting the unit might help, but if the error continues, an electrician should inspect the power source.
E3 – Indoor Fan Motor Malfunction
When the indoor fan motor fails, the E3 error appears. Cleaning the fan blades and checking for loose wiring may resolve the issue. However, a replacement motor may be needed.
E4 – Indoor Air Thermistor Error
This error happens when the indoor temperature sensor isn’t working correctly. The sensor might be loose or faulty, requiring a replacement.
E5 – Outdoor Unit Malfunction
The E5 error indicates a problem with the outdoor unit, often caused by overheating or a faulty component. Cleaning the outdoor unit and ensuring proper airflow can sometimes resolve this issue.
E6 – High-Pressure Protection
An E6 error means that the aircon’s pressure is too high. This could be due to a blocked air filter, dirty condenser coils, or a refrigerant issue. Cleaning the unit and checking refrigerant levels can help fix this problem.
E7 – Outdoor Fan Motor Malfunction
This error occurs when the outdoor fan motor isn’t working properly. A technician should inspect the motor, wiring, and fan blades to determine the cause.
E8 – Overheating Protection
If your unit overheats, it will display an E8 error. Ensuring good airflow, cleaning the filters, and checking refrigerant levels can help prevent this from happening.
E9 – Water Drainage Error
When the drain pump or water drainage system is blocked, the E9 error appears. Cleaning the drain pipe and checking for clogs should fix this issue.
How to Fix Fujitsu Aircon Error Codes
If you see an error code, here are a few steps to try:
Restart the Aircon – Sometimes, turning the unit off and on can reset the system.
Clean Filters and Coils – Since dust buildup can cause many issues, regular cleaning is important.
Check for Loose Connections – Wiring issues can cause communication errors, so it’s good to inspect them.
Ensure Proper Ventilation – Blocked airflow can lead to overheating and pressure problems.
Contact a Professional – If the problem persists, it’s best to get expert assistance.
Preventing Aircon Issues
To avoid error codes and keep your aircon running smoothly, follow these maintenance tips:
Clean the filters regularly to ensure proper airflow.
Schedule routine servicing to catch issues before they worsen.
Ensure good ventilation around both the indoor and outdoor units to prevent overheating.
Understanding Fujitsu aircon error codes can help you troubleshoot issues before they become major problems. While some errors have simple fixes, others require expert attention. Therefore, if your aircon is displaying an error code and you’re unsure what to do, don’t wait—schedule a service with Lion City Air Conditioner Services today!
