ErrorCodeDoctor
Daikin Air Conditioner M1 error code
The M1 error means your Daikin air conditioner system detected a fault with the central remote controller PCB. Contact a qualified technician to inspect and replace the central remote controller PCB.
Common causes
- Defective central remote controller PCB
How to fix it
-
1
Contact a qualified technician to inspect and replace the central remote controller 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
M1 error — frequently asked questions
What does the M1 error mean on a Daikin air conditioner?
The central remote controller PCB has a fault
What causes the M1 error?
The M1 error is usually caused by: Defective central remote controller PCB.
Can I fix the M1 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 M1 error?
Fixing the M1 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 M1 error?
We'd recommend addressing the M1 error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.