ErrorCodeDoctor
Daikin Air Conditioner L0 error code
The L0 error means your Daikin air conditioner detected a fault in the inverter system. This can be caused by a shortage of power supply capacity, a defective power transistor, or a defective outdoor unit PCB. Contact a qualified technician.
Common causes
- Shortage of power supply capacity
- Defective power transistor
- Defective outdoor unit PCB
How to fix it
-
1
Contact a qualified technician to inspect the inverter system and power supply capacity
Related Daikin Air Conditioner error codes
A0
An external protection device connected to the indoor unit has been activated
A1
A fault was detected in the indoor unit PCB (control board)
A3
The drain level control system has detected an abnormality — drain may be clogged
A5
Freeze-up protection (cooling) or high pressure control (heating) has activated — check the air filter
L0 error — frequently asked questions
What does the L0 error mean on a Daikin air conditioner?
The inverter system has a fault — possible power supply capacity shortage
What causes the L0 error?
The L0 error is usually caused by: Shortage of power supply capacity; Defective power transistor; Defective outdoor unit PCB.
Can I fix the L0 error myself?
This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.
How much does it cost to fix the L0 error?
Fixing the L0 error on a Daikin air conditioner typically costs $150–$500, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the L0 error?
We'd recommend addressing the L0 error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.