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Even when your air conditioner comes from a high-quality and reputable brand like Daikin, it’s still bound to run into a few issues, especially over time. However, you won’t be left in the dark about what’s wrong with your unit because there will be an indicator to give you a hint—a blinking light. If your Daikin AC’s light is blinking, then that means that there’s a problem with your unit, so here’s everything you need to know about how to troubleshoot it!
Why is the Green Light Flashing on My Daikin Air Conditioner?
The green light on your Daikin air conditioner is flashing because there is an error occurring inside your unit. There’s a wide range of issues that could be affecting your unit, so it’s best to check the error code to figure out what exactly is causing the blinking light. Here are some common issues.
Dirty Air Filter
The air filter of your air conditioner is responsible for catching all the impurities and preventing them from spreading throughout your space. However, when the filter isn’t checked and cleaned as often as it should be, it can become clogged with dirt and contaminants. This can cause a wide variety of problems inside your unit, so make sure to inspect your air filter regularly and clean it as needed.
Follow these steps to clean your Daikin air conditioner’s air filter:
- After powering down your AC, locate and remove the air filter. Feel free to consult your user manual to do this easily.
- Use a vacuum cleaner or a soft brush to remove all the loose particles and debris from the filter.
- Fill your sink or a bowl with enough water to submerge the filter and mix in a few drops of dish soap to create a soapy water solution.
- Leave the air filter to soak in the soapy water for a few minutes.
- Use a soft brush or sponge to gently scrub away the remaining dirt on your filter before rinsing it under some running water.
- Let the air filter dry completely before returning it to your air conditioner.
Malfunctioning Thermostat
There may be a communication error between your air conditioner and the thermostat, which could be preventing your unit from functioning properly. The best way to deal with this situation is to simply reset your thermostat by shutting it down and turning it back on after a few minutes. If this doesn’t resolve the issue, then it may be best to reach out to a professional HVAC technician or electrician.
Refrigerant Issues
In case you didn’t know, refrigerant is a substance that plays a very crucial role in your air conditioner’s cooling process. It helps remove the heat from the air, so any issues with it can trigger an error in your AC unit. Whether you’re dealing with a refrigerant leak or low refrigerant levels, it’s best to let a professional HVAC technician handle this.
Electrical Problems
Any issue with the power or electrical wiring of your air conditioner can also cause the light to keep blinking. Inspect for any faulty or frayed wiring, and make sure that your unit is properly plugged into a working electrical outlet. If none of these things resolves the issue, then have your Daikin air conditioner checked by a professional technician or electrician.
Dead Remote Control Batteries
When the batteries of your remote control are running out, the light on your Daikin air conditioner could start blinking as a way of bringing this to your attention. Just replace the batteries of your remote as soon as you can to fix the light blinking issue.
How to Find Error Code on Daikin Air Conditioner
There are a number of common and uncommon aircon unit problems attributed to the flashing green light, and identifying the correct error code will narrow down the problem to make it easier for you to find the root cause of the issue.
Grab your original Daikin air conditioner remote controller, and see if there are any error codes flashed on the screen. If there is no error code on the LED screen of your remote controller or the indoor unit, then you will need to put your aircon unit on diagnostic mode:
- Press and hold the Cancel button for around 5 seconds or until you hear a beep. The screen should go blank, and a '00' should display on-screen.
- Press the Cancel button again to display the list of error codes of your unit. Scroll through the list using the Cancel button. You should hear a short beep while you scroll.
- Keep pressing the Cancel button until a long beep rings. The error code shown on the screen should indicate the problem with your unit.
- Consult the user manual to decipher the Daikin error code, and follow the troubleshooting steps to fix the aircon issue.
Daikin AC Error Code List
Here are some error codes that your Daikin air conditioner could display:
- AC: Low water level
- AE: No water supply
- AF: Malfunctioning humidifier system
- C0: Malfunctioning sensor system
- E5: Inverter compressor motor overheating
- FH: Abnormal refrigerant temperature
- U0: Refrigerant shortage
- U2: Defect of power supply voltage or power failure
- U4: Disrupted transmission between indoor and outdoor unit
- U5: Disrupted transmission between indoor unit and remote
If you’re looking for a complete list of error codes, read our article Daikin Air Conditioner Error Codes
Daikin air conditioners often use blinking lights and error codes to tell you what the problem is. While some of these issues can be resolved on your own, others are better left to the professionals. For more complicated matters, as well as regular cleaning and maintenance in general, make sure to book an appointment with an aircon servicing company to ensure that your air conditioner is running smoothly!
