Daikin
No Power / Dead Indoor Unit
Daikin air conditioner does not power on at all; no lights or display on indoor unit
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Tripped circuit breaker, Blown indoor unit fuse on PCB, Loose power wiring at indoor terminal block, Failed indoor power supply PCB
How to Fix / Troubleshooting
Safety first: Be cautious around mains voltage. Turn off the breaker before removing covers.
User checks:
- Verify that the dedicated Daikin AC breaker is ON and has not tripped. Reset once if tripped; if it trips again, stop and call a technician.
- Confirm that any wall switch controlling the indoor unit is turned on.
- Try operating the unit with both the remote and the manual ON/OFF button on the indoor unit (if present).
Technician tasks:
- Check voltage at the indoor unit terminal block.
- Inspect and replace any blown fuses on the indoor PCB.
- Test and replace the indoor power supply PCB if no low-voltage output is present.
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Repair Difficulty
Medium
3/5
Required Part
Indoor Power Supply PCB
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