ErrorCodeDoctor
Daikin Air Conditioner A6 error code
The A6 error means your Daikin air conditioner detected a fault with the indoor unit fan motor. This can be caused by broken wiring, a short circuit in the fan motor harness, disconnected connectors, a defective fan motor, or a defective indoor unit PCB. Contact a qualified technician to inspect and replace the fan motor or PCB.
Common causes
- Fan motor wiring is broken or has a short circuit
- Fan motor harness connector is disconnected
- Fan motor has failed
- Indoor unit PCB has malfunctioned
How to fix it
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1
Contact a qualified technician to inspect the fan motor harness, connectors, and PCB
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
A6 error — frequently asked questions
What does the A6 error mean on a Daikin air conditioner?
The indoor unit fan motor has a fault
What causes the A6 error?
The A6 error is usually caused by: Fan motor wiring is broken or has a short circuit; Fan motor harness connector is disconnected; Fan motor has failed; Indoor unit PCB has malfunctioned.
Can I fix the A6 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 A6 error?
Fixing the A6 error on a Daikin air conditioner typically costs $150–$400, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the A6 error?
We'd recommend addressing the A6 error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.