ErrorCodeDoctor
Daikin Air Conditioner MC error code
The MC error means your Daikin air conditioner system detected a duplicate address setting in the centralized control equipment. Each controller must have a unique address. Contact a qualified technician to correct the address duplication.
Common causes
- Address duplication in the central remote controller settings
How to fix it
-
1
Contact a qualified technician to identify and correct the duplicate address setting in the centralized control equipment
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
MC error — frequently asked questions
What does the MC error mean on a Daikin air conditioner?
A duplicate address was detected in the centralized control equipment
What causes the MC error?
The MC error is usually caused by: Address duplication in the central remote controller settings.
Can I fix the MC 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 MC error?
Fixing the MC error on a Daikin air conditioner typically costs $80–$200, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the MC error?
We'd recommend addressing the MC error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.