Daikin · Simple Self Diagnosis by Malfunction Code | Daikin
The unit has detected an incorrect phase sequence in the power supply or an open phase, which can damage the system.
Click steps to track your progress.
Turn off the power to the unit at the breaker.
Verify the electrical connections and ensure they are correct for your region.
Restore power and check if the error clears.
If the error persists, consult a qualified electrician or HVAC technician.