Daikin Aircon Light Blinking? What It Means And How To Solve It

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Daikin aircon blinking light
If your Daikin Aircon is blinking, it usually indicates a malfunction or a fault that needs attention. Daikin aircon units are known for their reliability, but like any complex machine, they can experience issues from time to time. Understanding why the light is blinking can help you identify the problem and possibly solve it without calling a technician. In this guide, we'll go over the potential reasons why the light on your Daikin air conditioner might be blinking and what you can do to fix the problem.
1. Understanding the Blinking Light
Daikin aircon typically has two main types of lights that may blink: the Power (ON) light and the Operation light. The power light blinking usually signals a general issue, while the operation light can blink in different patterns, each indicating a specific problem.
Different blinking patterns:
Flashing light in a steady pattern (such as every few seconds) – This typically indicates a power or control board issue.

Rapid blinking – This could indicate a refrigerant leak, sensor issue, or a major mechanical fault.

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... One long blink followed by a shorter one – This can point to a communication error between the indoor and outdoor units or a faulty electrical component.

2. Common Causes of a Blinking Light on Daikin Air Con
Here are some common causes and potential fixes:
a. Dirty Air Filters
One of the most common reasons for a blinking light is dirty or clogged air filters. When the filters are covered in dirt and debris, the airflow through the air conditioner is reduced, which can lead to overheating or operational issues. View more
Solution:
Turn off the aircon.

Open the front panel and remove the filters.

Clean the filters with a soft brush or vacuum cleaner. If they are too dirty, wash them with lukewarm water (avoid using harsh chemicals).

Reinstall the filters and restart the aircon.

b. Refrigerant Leak or Low Refrigerant Levels
If the refrigerant level is too low, the AC won’t be able to cool the air properly. This can cause the unit to overheat and result in a blinking light, particularly a rapid blinking of the operation light.
Solution:
This is a more serious issue and requires a professional technician. They will check for leaks, repair them, and refill the refrigerant.

c. Electrical Problems
A blinking light may be an indication of an electrical fault, such as a malfunctioning circuit or control board. Electrical issues can be caused by power surges, wiring problems, or a short circuit.
Solution:
Check if the unit is properly plugged in and that the power supply is stable.

If there is a power surge or a fuse has blown, replace the fuse or check the circuit breaker.

If you suspect a more complex electrical fault, it is best to contact a certified technician for inspection.

d. Faulty Thermistor or Temperature Sensor
The temperature sensor (thermistor) is responsible for detecting the air temperature inside the unit. If the thermistor is faulty, it may send incorrect signals to the control board, causing the light to blink.
Solution:
A technician will need to inspect and replace the faulty thermistor or sensor. This is not something you can easily do yourself, as it requires access to the internal components of the unit.

e. Blocked Outdoor Unit
The outdoor unit is responsible for expelling heat, and if it is blocked by debris (leaves, dirt, etc.), it could lead to overheating, which in turn could cause the blinking light to appear.
Solution:
Inspect the outdoor unit for any blockages. Clear away leaves, dirt, or other debris that might be obstructing airflow.

Ensure that the area around the outdoor unit is clean and free of obstacles, allowing for proper ventilation.

f. Internal Malfunction or Fault
Sometimes, a blinking light simply indicates an internal malfunction or an issue with the control board, which is the brain of the air conditioning unit.
Solution:
In these cases, the issue may require a professional technician to diagnose and repair the problem. The technician will check the control board and other internal components for any damage or faults.

3. How to Reset Your Daikin Air Conditioner
If you've checked for basic issues like dirty filters or blockages and the blinking light persists, a reset may help clear the error. Here's how to reset your Daikin aircon:
Turn off the unit using the remote control or the power button.

Unplug the unit from the power socket (or turn off the circuit breaker).

Wait for at least 10 minutes to allow the system to fully reset.

Plug the unit back in and turn it on again.

If the light continues to blink after resetting, it’s time to consult a professional technician.
4. When to Call a Technician
If you've gone through these troubleshooting steps and the blinking light persists, it might be time to call a Daikin-certified technician. They will have the expertise and tools to diagnose and repair the problem correctly.
Conclusion
A blinking light on your Daikin Aircon usually indicates a malfunction that requires attention. By following these troubleshooting steps—cleaning the filters, inspecting the refrigerant levels, checking for electrical issues, or resetting the system—you can often resolve the issue without needing professional help. However, if the problem persists, don't hesitate to reach out to a qualified technician to avoid causing further damage to your unit.

Contact information:
Call: +65 90235452 (or) Whats App us: https://wa.me/6590235452
Mail ID: info@coolcare.com.sg

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