Aircon power light blinking is a common aircon problem that users face often. There are several reasons for this problems and many of these causes are simple to solve. Let’s explain the common reasons for the aircon power light blinks, what it means, and what you can do to fix it. You will also learn when to call a professional aircon technician to solve it. Let’s get started.
What Does the Blinking Power Light Mean?
Blinking power light is a warning signal. It indicates that the system has detected a problem. Some modern air conditioners even use blinking lights as part of an error code system. The number of blinks can help identify the issue.
Each aircon brand is different. For example, a blinking power light in a Daikin aircon may mean something different from a blinking light in a Mitsubishi or Panasonic unit. However, the blinking usually points to one of the following problems:
- Dirty filters
- Faulty sensors
- Blocked drainage
- Low refrigerant gas
- Faulty PCB (printed circuit board)
- Electrical problems
Let’s go through each of these common causes.
Common Reasons Why Your Aircon Power Light is Blinking
1. Dirty Air Filters
One of the most common reasons for blinking lights is a dirty filter. Singapore’s dusty environment and constant aircon use can cause dust to build up quickly. A clogged filter blocks airflow. This makes the system work harder and can lead to overheating. When that happens, the aircon sends out a warning – often through blinking lights.
Solution:
Turn off your aircon. Open the front panel and remove the filter. Clean the aircon filter gently with water and let it dry fully before putting it back. Try to clean your filter once every 2–4 weeks, especially if you use the aircon daily.
2. Sensor Problems
Aircon thermostat sensor tells the aircon how cold the room is. If the sensor is faulty or out of place, the system may not work properly. This can cause the power light to blink.
Solution:
You can try resetting the aircon by turning it off and back on after a few minutes. But if the problem remains, you need a help of a professional technician to replace the sensor.
3. Blocked Drainage Pipe
Singapore’s humidity causes aircons to remove a lot of moisture from the air. This water is drained out through a pipe. If the drainage pipe is clogged, water can back up into the unit. This may trigger a blinking light to warn you to clean the aircon drainage system.
Solution:
Check for water dripping from the indoor unit or strange gurgling sounds. If you suspect a blocked drain, call a technician. Clearing the drain requires proper tools and knowledge.
4. Low Refrigerant Gas
The refrigerant gas is what cools the air. There are several reasons for aircon gas leakage. If your aircon has a gas leak or the gas level is low, it won’t cool properly. This can cause the power light to blink.
Solution:
Only licensed professionals in Singapore can top up or check gas levels. If your aircon isn’t cooling well and the light is blinking, you should call a professional technician.
5. Faulty PCB (Control Board)
The PCB controls how your aircon works. If it is damaged, the unit may behave oddly. This includes blinking lights, failure to cool, or the aircon will not turn on at all.
Solution:
Replacing a PCB is a job for a certified aircon technician.
6. Electrical Issues
Sometimes, voltage fluctuations or electrical faults in your home can cause the aircon to malfunction. This may lead to blinking lights as a warning.
Solution:
Try switching off the aircon from the main power for a few minutes, then restart it. If the light still blinks, take help from a technician.
When to Call a Technician if Aircon Light Blinks?
You need to call a technician if the problem persists after trying simple solutions like cleaning the filter or restarting the unit do not work. In Singapore, there are many certified aircon servicing companies. Choose one with good reviews and NEA-licensed technicians.
Here are some aircon signs that you should not ignore:
- Blinking continues even after cleaning the filter
- Strange noises from the unit
- Water leaking from the indoor unit
- Aircon is not cooling properly
- Bad smell coming from the aircon
These signs mean the problem may be serious. Trying to fix it on your own may make things worse.
Preventing the Power Light from Blinking
Regular servicing is the best way to prevent this problem. It’s recommended that you take general servicing every 3 to 4 months.
Benefits of regular aircon servicing:
- Better cooling performance
- Longer lifespan of the unit
- Lower electricity bills
- Cleaner air inside your home
- Fewer breakdowns and blinking light problems
Many service companies in Singapore offer aircon maintenance packages. These are affordable and give you peace of mind.
Final Thoughts
A blinking power light on your aircon is a warning. It’s not something you should ignore. There can be several reasons for the problem. If the problem is not solved after trying a few common solutions, call a technician and stay cool and comfortable.
