If your Daikin aircon light is blinking, it means your unit is trying to tell you something is not right. A faulty aircon can be very uncomfortable in Singapore’s hot weather. If you are a Daikin user, let’s try to understand what causes your aircon’s light to blink and what the solution is. Let’s get started.
What Does a Blinking Light on Daikin Aircon Mean?
Daikin air conditioners use blinking lights to show error codes. These lights help users know what kind of problem the system is facing. The number and type of blinks tell you if it’s a minor issue or something more serious.
Some of the common light indicators on Daikin units include:
| Light Indicator | Blinking Pattern | Meaning |
| Power Light (Green) | Constant | Normal operation |
| Power Light (Green) | Blinking | General fault detected |
| Timer Light (Orange) | Blinking | Indoor unit issue |
| Red Light (Indoor Unit) | Blinks in sequence | Specific system error |
| All Lights Flashing | – | Critical system failure |
Common Reasons Why the Daikin Aircon Light is Blinking
Below are the common reasons for your Daikin aircon’s blinking lights:
1. Dirty Air Filters
Dust builds up on the aircon filter can be reason of the Daikin aircon’s malfunction. A clogged air filter can reduce airflow and cause the system to overheat.
2. Refrigerant Problems
When refrigerant gas is low or leaking in your Daikin system, the aircon cannot cool the room properly. The system will alert you with blinking lights.
3. Faulty Temperature Sensor
If the temperature sensor fails, the Daikin system cannot read the room temperature. This can cause irregular cooling and blinking lights.
4. Blocked Outdoor Unit
The outdoor unit of the aircon needs free space for airflow. If it’s blocked by plants or walls, your Daikin system can overheat and start blinking lights.
5. PCB or Wiring Fault
A damaged circuit board or loose wire can cause the system to stop. It may start to blink to alert you to solve the issue.
Power Light Blinking (Green)
When the green power light on your Daikin aircon starts blinking, it usually signals a system fault. This could be related to the indoor or outdoor unit. The common causes are:
- Dirty air filters
- Faulty sensors
- Electrical issues
What to do:
Turn off the aircon, clean the filters, and restart the system. If the blinking continues, contact a technician.
Timer Light Blinking (Orange)
The orange timer light blinking of your Daikin system indicates an issue with the indoor unit. This could mean:
- The fan is not working properly
- The temperature sensor is malfunctioning
- There’s an internal component issue
What to do:
Use your remote to check for error codes. This will help identify the exact problem. You may need professional repair.
Red Light Blinking (Indoor Unit)
Some Daikin indoor units have a red blinking light. Their specific number of blinks often indicate the exact problems of the system. Common reasons for red light blinking of the Daikin system include:
- Low refrigerant levels
- Thermistor failure
- Communication error between units
What to do:
Count the number of blinks before the pattern repeats. Refer to your aircon manual or call a technician with that information.
All Lights Blinking Together
When all lights of the Daikin system blink at the same time, it signals a major fault. This could happen due to:
- PCB (circuit board) failure
- Power supply issues
- Severe internal damage
What to do:
Turn off the aircon and unplug it. Wait a few minutes before restarting. If the lights keep blinking, do not continue using the unit. Contact a Daikin service provider.
Error Code Display via Remote Control
Some Daikin remotes can show error codes. To find the error code:
- Turn off the aircon.
- Point the remote at the unit.
- Find out Daikin remote symbol for ‘Cancel’. Press and hold this button until it beeps.
- Keep pressing until you hear a long beep – this is your error code.
Once you know the code, you can search it online or contact a technician for help.
What You Can Do Before Calling A Technician
Here are some basic steps you can take before calling a technician:
Switch Off and On: Turn off the power for 5–10 minutes. Then switch it on to see if the blinking stops.
Clean Air Filters: Remove filters and wash them gently with water. Let them dry before placing back.
Check for Obstructions: Make sure the outdoor unit has enough space and is not blocked by plants or walls.
Look Up Error Code: Use your remote control to check the exact error code, if available.
When to Call a Professional If Your Daikin Aircon Keeps Blinking
If the blinking continues or if you notice any strange noise, warm air, or water leakage, call a certified aircon technician in Singapore. They can fix the issue safely and ensure your unit runs properly again.
Frequently Asked Questions (FAQ)
Why is my Daikin aircon blinking red and not cooling?
The blinking red light could mean your aircon has a refrigerant leak, dirty filter, or sensor fault.
Can I reset my Daikin aircon myself in case the light keeps blinking?
Yes. Turn off the power for 5–10 minutes and restart the unit. This helps in minor cases.
Is it safe to keep using the Daikin aircon when the red light is blinking?
No. You should find out the problem first and solve it.
What does the timer light blinking means in Daikin aircon?
A blinking timer light usually means the indoor unit has a problem. Dirty filters or sensor issues are a few reasons for this problem.
