ErrorCodeDoctor
Daikin Air Conditioner error codes
Select a Daikin air conditioner error code to see what it means, common causes, and how to fix it.
Error Codes
L6
The inverter detected an instantaneous overcurrent on the AC output
L8
The inverter compressor is drawing excessive current
L9
The inverter compressor failed to start — stop valve may be closed
LA
The power transistor has a fault
LC
A communication fault was detected between the control PCB and the inverter PCB
M1
The central remote controller PCB has a fault
M8
A communication fault was detected between optional centralized controllers
MA
An improper combination of optional centralized controllers was detected
MC
A duplicate address was detected in the centralized control equipment
P1
A power voltage imbalance or inverter PCB fault was detected
P2
The automatic refrigerant charge operation stopped — stop valve may be closed
P3
The switch box thermistor has a fault
P4
The radiation fin temperature sensor has a fault
PJ
An improper combination of inverter and fan driver was detected
U0
A refrigerant shortage was detected
U1
Reverse phase or open phase detected in the power supply
U2
A power supply abnormality or instantaneous power failure was detected
U3
The check operation has not been executed — run it before normal operation
U4
A communication fault was detected between the indoor and outdoor units
U5
A communication fault was detected between the indoor unit and the remote controller