If your Daikin air conditioner suddenly stops cooling, starts blinking, or the outdoor unit refuses to turn on, a quick reset may fix the problem. Many homeowners prefer trying a simple DIY reset before booking a technician—especially when their Daikin aircon Singapore system experiences minor faults.
In this guide, how to reset a Daikin aircon safely, what issues a reset can solve, and when you should contact a professional.
Why You May Need to Reset Your Daikin Aircon
Daikin units are reliable, but like all electronics, they may freeze, glitch, or trigger error codes. A reset helps clear temporary faults like:
- The aircon suddenly stops cooling
- The system becomes unresponsive
- Remote control not reacting
- Daikin aircon light blinking without cooling
- Airflow suddenly weak
- Outdoor unit stops working
- Indoor unit stuck in one mode
A reset will refresh the system and restore normal operation—similar to restarting a smartphone.
Signs Your Daikin Aircon Needs a Reset
You may need to reset your Daikin aircon if:
- Daikin aircon not cooling even when the temperature is set low
- Blowing warm air instead of cold
- Daikin aircon light blinking continuously
- Outdoor unit not working or fan not spinning
- Remote control not responding
- The aircon turns on and off by itself
- Error code appears on the display
If you see blinking lights, always note the pattern—this can help identify error codes later.
How to Reset Your Daikin Aircon (Quick Step-by-Step Guide)
This part gives you three simple ways to reset your Daikin aircon. It helps beginners follow easy steps to try and fix the problem on their own.
Method 1: Reset Using the Remote Control
- Switch off the aircon using the remote.
- Remove the batteries from the remote.
- Wait for 10 seconds.
- Insert the batteries again.
- Turn on the aircon and test cooling.
This helps when the issue is related to remote control glitches.
Method 2: Full System Reset (Power Reset) — Most Effective
This is the recommended method for most Daikin issues.
- Turn off the aircon from the remote.
- Locate your circuit breaker or aircon power switch.
- Switch off the aircon power completely.
- Wait for 30 seconds (to discharge stored electricity).
- Switch the power back on.
- Turn on the aircon and allow it to run for a few minutes.
This resets the indoor and outdoor units together.
Method 3: Reset Daikin WiFi Models (iSmile Eco / iSmile Eco+)
If you use a WiFi-enabled Daikin aircon:
- Hold the WiFi reset button on the indoor unit (usually near filters).
- Wait for the LED to blink.
- Reconnect the aircon to the Daikin mobile app if required.
Use this only when your WiFi connection fails or the remote app cannot control the aircon.
When a Reset Works — And When It Doesn’t
✔ Reset works for:
- Minor electronic glitches
- Temporary PCB communication faults
- Daikin aircon light blinking due to minor sensor errors
- System freeze or slow response
- App/WiFi pairing issues
✘ Reset does NOT fix:
- Gas leak
- Dirty coils or choke
- Faulty compressor
- Damaged indoor PCB or outdoor PCB
- Blocked drainage pipe causing water leaking
- Faulty fan motor
If your Daikin aircon goes back to blinking after reset, there is a real problem that needs technician support.
Common Daikin Problems Reset Cannot Solve
Here are issues that require professional diagnosis:
• Daikin aircon not cooling
Usually caused by:
- Low gas
- Dirty indoor/outdoor coil
- Blocked filters
- Faulty sensor
• Daikin aircon light blinking non-stop
Possible reasons:
- PCB fault
- Fan motor problem
- Refrigerant issues
- Thermistor problem
• Daikin outdoor unit not working
May be due to:
- Faulty capacitor
- Compressor overload
- Burnt PCB
- Fan motor failure
If the outdoor fan is not spinning or the compressor is silent, a reset will not help.
Safety Tips Before Resetting Your Daikin Aircon
- Avoid touching internal components
- Do not reset the unit repeatedly
- Never open the indoor or outdoor casing yourself
- Turn off the main power before handling switches
- If burning smell or sparks appear — stop immediately
If unsure, always call an experienced technician.
Conclusion
Resetting your Daikin aircon is a quick and simple method to solve minor issues like blinking lights or temporary communication faults. However, problems such as Daikin aircon not cooling, outdoor unit not working, or repeated blinking require professional inspection.
If your aircon still behaves abnormally after a reset, don’t worry—LetsCool Aircon is always ready to assist.
