ErrorCodeDoctor
Daikin Air Conditioner E6 error code
The E6 error means your Daikin air conditioner detected that the standard (non-inverter) compressor motor has an overcurrent or is mechanically locked. This can be caused by a defective compressor, a defective control PCB, or the stop valve not being opened. Check that all refrigerant stop valves on the outdoor unit are fully open. If they are open contact a qualified technician urgently.
Common causes
- Defective compressor
- Defective control PCB
- Stop valve on the refrigerant piping is not opened
How to fix it
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1
Check that all refrigerant stop valves on the outdoor unit are fully open
-
2
If stop valves are open contact a qualified technician urgently to inspect the compressor and control 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
E6 error — frequently asked questions
What does the E6 error mean on a Daikin air conditioner?
The standard compressor motor has an overcurrent or is locked
What causes the E6 error?
The E6 error is usually caused by: Defective compressor; Defective control PCB; Stop valve on the refrigerant piping is not opened.
Can I fix the E6 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 E6 error?
Fixing the E6 error on a Daikin air conditioner typically costs $300–$1500, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the E6 error?
We'd recommend addressing the E6 error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.