Introduction to Aircon Error Code
If you are experiencing an aircon light blinking problem, chances are, your air conditioning unit is telling you that it is experiencing an issue. And most of the time, it will come with an Aircon error code. It is to guide you in the direction of the Aircon troubleshooting procedure. In this article, we will elaborate more on Aircon error code of different brands. We will also let you know the estimated cost of aircon repair after finding out the error code. Do note that the error code that we are elaborating on will only be in Singapore context. It will also be for residential split unit air conditioners only. For other types of Aircon such as portable aircon, VRV system, and chiller units, you may have to seek help from other articles to provide you with the relevant information.
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Well that very much depends on the brand of your Aircon unit. It also depends on whether this is an inverter or non inverter Aircon.
If this is an inverter aircon, the system will provide an error code to assist the technician in troubleshooting. However, if it is a non inverter Aircon. The Aircon technician will have to do a lot more troubleshooting. Nonetheless, the Aircon spare parts required by non inverter Aircon is way less costly than those for an inverter Aircon. Simply put, it is much cheaper to repair non inverter Aircon than inverter Aircon units. Inverter Aircon units will need Aircon spare parts that are a lot more brand and model specific that non inverter Aircon units.
For inverter Aircon units, the Aircon error code can most likely be found in these 3 places.
A) IDU
Indoor display unit. Certain Aircon brands such as MIDEA aircon will display the Aircon error code on the fancoil unit itself. Which means it is incredibly easy to find out the the error code of your Aircon.
B) Outdoor unit
Another way to find out the error code in Singapore is to access the outdoor unit. The error code will most likely be displayed on a panel. Or it can also be reflected based on the pattern of blinking light.
C) Remote control
There are some brands such as Daikin Aircon which allows you to find out the error code via the remote control. This is only when your Aircon starts blinking light. We may have to refer to the brand specific Aircon error code page to know how to find the error code from the Aircon remote control.
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Daikin Aircon Error Code
Daikin Aircon has one of the most consistent Aircon error detection system. You can simply find out the Aircon error code via the remote control.
Mitsubishi Aircon Error Code
There are 2 ways to see the error code. One is based on the number of times the light is blinking in the indoor unit. The other will be based on the red and green light sequence that is blinking in outdoor Aircon PCB board.
Fujitsu Aircon error code
Fujitsu’s error code can be deduced based on the sequence of the 2 types of Aircon light that is blinking. There are the operation light and timer light. So you will have to take a video of the number of times the operation and timer light that is blinking. It will also depends on the model. Different model may reflect different error codes.
Panasonic Aircon error code
Similar to Daikin, you can also use a remote control to deduce the error in a Panasonic aircon.
Mitsubishi Heavy Industries Aircon Error Code
Similar to Fujitsu. It will be dependent on the 2 types of lights that are shown in the fancoil unit. Namely operation and timer light blinking. Refer to the link above for a more comprehensive list of error code for Mitsubishi heavy industries Aircon.
Midea Aircon Error Code
As mentioned in the earlier paragraph, the indoor display unit shows the code directly.
Toshiba Aircon Error Code
For Toshiba Aircon, we recommend that you get the code from the outdoor condenser unit instead. There is a sequence of blinking light that can be found in the outdoor Toshiba Aircon pcb board.
FACING THESE AIRCON PROBLEMS?
Noisy Aircon?
Faulty Aircon Thermistor ?
Aircon Bad Odour?
Malfunctioning Aircon Compressor?
When your aircon unit displays an error code, it indicates a specific issue that requires attention. Professional aircon technicians will first diagnose the error code to determine the necessary repairs. Once identified, they will source the appropriate aircon spare parts in Singapore for replacement. Below, we outline the common spare parts that may need replacing and explain how error codes serve as a troubleshooting guide.
Common Aircon Spare Parts That May Need Replacement
📌 Aircon PCB Board – The printed circuit board (PCB) acts as the control center of your aircon. If faulty, it can cause various operational failures, including power issues and incorrect sensor readings.
📌 Thermistor (Temperature Sensor) – This component monitors room temperature and regulates cooling. A malfunctioning thermistor can lead to erratic temperature control or system shutdowns.
📌 Compressor – The compressor is the heart of the aircon, responsible for refrigerant circulation. If defective, the unit may not cool properly or may produce unusual noises.
📌 Fan Motor – The fan motor ensures proper airflow. A failing motor can result in weak airflow, overheating, or complete system failure.
Understanding Error Codes – A Guide, Not a Definitive Diagnosis
While error codes help pinpoint potential issues, they do not always mean the indicated part is faulty. For example, if the error code suggests a fan motor failure, the problem may not necessarily be the motor itself. Instead, it could be due to a faulty PCB board not supplying sufficient voltage to the motor or wiring issues or a blown capacitor affecting the motor’s operation. Therefore, relying solely on error codes without thorough troubleshooting can lead to unnecessary part replacements. A comprehensive diagnostic check is essential to accurately identify the root cause.
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In Conclusion
If your aircon unit is displaying a blinking light, it is likely signaling an issue that requires attention. Most modern inverter aircon systems are designed to emit an error code when a malfunction occurs, helping technicians diagnose the problem efficiently.
All in all, what to do when your aircon shows a blinking light or error code: check your aircon’s user manual or search online for the meaning of the blinking pattern or error code and try to understand the issue. Some common error codes relate to sensor malfunctions (thermistor failure), compressor issues (overheating, low refrigerant), fan motor problems (blocked airflow, motor failure), and PCB board faults (electrical failures). Or, just Whatsapp us for a free consultation.
Here at Silverback Aircon, we stock a wide range of aircon spare parts, reducing downtime by having the necessary components ready for replacement. Before scheduling a visit, our technicians can guide you through basic troubleshooting to see if the issue can be resolved remotely. Our goal is to diagnose and fix your aircon in a single visit, saving you time and inconvenience. No hidden costs—just honest, professional repairs with warranty-backed solutions.
