Daikin is one of the most popular aircon brands in Singapore. Many homeowners use these aircons for their great features. However, there is an issue the users face often with the Daikin aircon – it turns on and off by itself. There are many reasons that can cause this issue. Let’s find out the causes of Daikin aircon’s turning on and off by itself and discover its solution.
Common Reasons Your Daikin Aircon Turns On and Off Automatically
There can be many reasons for your Daikin aircon’s turning on and off automatically. Below are the most common ones:
1. Dirty Air Filter
A clogged air filter can reduce the airflow coming out of the aircon. When this happens, your aircon may overheat and shut down to protect itself. Once it cools after having some rest, it starts again. This cycle repeats and can make it seem like the unit has a mind of its own.
What to do: Clean or replace your air filter every 2–4 weeks. In countries like Singapore, filters get dirty faster due to humidity and dust.
2. Faulty Thermostat
Your aircon’s thermostat controls when the system turns on and off. If it gives wrong temperature readings, your unit might shut off too early or turn on when it’s not needed.
What to do: Try changing the batteries or moving the thermostat away from sunlight or heat sources. If that doesn’t work, you may need a technician to check the wiring.
3. Incorrect Temperature Setting
Sometimes, the temperature setting is too close to the room’s actual temperature. This causes the system to reach the target quickly and turn off, then come back on when the temperature rises slightly.
What to do: Set your aircon a few degrees lower than the current room temperature. A substantial difference helps it run smoothly without constant stops.
4. Timer or Sleep Mode Activated
Most Daikin air conditioners have built-in timers or sleep mode settings. You may also check whether the night mode is activated. These features are helpful, but if activated accidentally, they can cause the unit to turn off and on at fixed intervals.
What to do: Check your remote control. Look for symbols like “clock,” “timer,” or “sleep.” Turn off the timer if it is activated. Disable any active modes and reset the timer.
5. Remote Control Malfunction
A faulty or stuck button on the remote can cause signal interference. This might send commands to the aircon without you knowing.
What to do: Check your remote for any stuck buttons. Replace the batteries or test it with another compatible remote, if you have one.
6. Dirty Condenser Coils
Your outdoor unit needs clean coils to work properly. If the coils are covered in dirt, the system may overheat and turn off.
What to do: Have the outdoor unit cleaned regularly. In Singapore, outdoor units face rain, dirt, and fallen leaves that can block airflow.
7. Refrigerant Leak
A refrigerant leak can cause the aircon to cool unevenly or shut down randomly. You might also hear hissing sounds or notice weaker airflow.
What to do: This is a job for a licensed technician. If you suspect a gas leak, switch off the system and arrange for an inspection.
8. Faulty Circuit Board or Electrical Issues
Aircon circuit board can be a reason for this problem. If there is a fault in the circuit board, relay switches, or internal wiring, your aircon might turn on and off unexpectedly.
What to do: Do not attempt to fix this yourself. Get a professional aircon technician to examine the PCB board.
How to Fix It: DIY Steps Before Calling a Technician
Here are a few things you can try before booking a repair service if your Daikin aircon turns on and off automatically:
- Switch off the unit and unplug it for a few minutes. Then plug it back in and restart.
- Check and clean the air filter.
- Ensure there is no timer or sleep mode turned on.
- Reset the thermostat or remote.
- Ensure all windows and doors are closed for better cooling performance.
If the problem continues after trying these steps, it’s time to call for servicing.
Importance of Regular Maintenance: Preventive Maintenance
As a preventive measure, you can book regular maintenance to ensure better air quality and longevity of the AC unit.
Regular servicing helps:
- Prevent sudden breakdowns
- Improve cooling efficiency
- Extend the lifespan of your aircon
- Reduce electricity bills
It’s a good idea to have a general servicing your unit every 3–4 months, especially if you use it daily.
When to Replace Your Aircon
If your unit is more than 8–10 years old and needs frequent repairs, replacing it might be more cost-effective. New Daikin models are more energy-efficient and quieter.
Signs you may need a new unit:
- Unusual noises
- High electricity bills
- Inconsistent cooling
- Water leakage
Ask a technician for advice before making a decision.
FAQ
Why is my Daikin aircon turning off after a few minutes?
This could be due to a dirty filter, incorrect temperature setting, or a faulty sensor. Try cleaning the filter and adjusting the temperature before calling a technician.
Can power supply issues cause my aircon to turn off and on?
Yes. Unstable voltage or loose wiring may interrupt the power flow. This is best checked by a licensed electrician.
How do I reset my Daikin aircon?
Turn off the unit, unplug it for a few minutes, and then turn it back on. You can also try using the reset function on the remote if available.
Is it safe to keep using the aircon when this happens?
If your aircon is cycling on and off often, it may overheat or wear out faster. It’s best to turn it off and call for a check-up.
