Aircon Not Turning On
When your aircon refuses to start, the cause can range from a dead remote control battery to a serious electrical fault. Start with the simplest checks first.
Common Causes
Power Supply Issues
After a brownout or power interruption — common in many areas of the Philippines — the aircon may not restart automatically. Voltage fluctuations can trip internal protection circuits or blow fuses.
Remote Control Problems
Dead batteries or a malfunctioning remote are the most common reason an aircon appears dead. The unit itself may be fine. Try the manual button on the unit's body to confirm.
Thermostat or Control Board
The thermostat may have locked the unit if the room temperature matches the set point. Alternatively, a brownout may have corrupted the control board settings, requiring a reset.
Tripped Circuit Breaker or Blown Fuse
A power surge during brownout recovery is a frequent cause of tripped breakers in Philippine homes. The fuse inside the unit or at the dedicated wall outlet may also have blown.
DIY Fixes — Step by Step
- 1
Replace the remote control batteries
This is the most common fix. Replace with fresh AA batteries and ensure they are inserted with correct polarity. Point the remote directly at the unit receiver (usually below the display panel) from within 5 meters.
- 2
Check the circuit breaker
Go to your electrical panel and look for a tripped breaker (it will be in the middle position between ON and OFF). Switch it fully OFF then back ON. Wait 3 minutes before trying to start the aircon.
- 3
Perform a hard reset
Turn off the unit with the remote. Unplug it from the wall socket or switch off the dedicated breaker. Wait 5 minutes. Restore power. This clears any corrupted control board states from brownout events.
- 4
Try the manual ON button
All aircon units have a manual test button on the indoor unit body — usually under the front panel. Press it to start the unit. If the unit starts manually but not via remote, the remote or receiver needs replacement.
When to Call a Professional
- The breaker trips again immediately after reset
- You smell burning plastic from the unit or electrical panel
- The unit powers on but shuts off within seconds (protection circuit lockout)
- The display shows error codes (note down the code and report it)
- The power cable or plug shows signs of burning or damage
Estimated Repair Costs (Philippines)
Remote control replacement: ₱300–₱800. Fuse replacement: ₱200–₱500. Control board repair: ₱1,500–₱5,000.
Related Problems
Need Professional Help?
Book a certified aircon technician in Metro Manila and major Philippine cities.