Daikin Mini-Splits & Ductless Systems

24 known error codes

A1 Moderate

Indoor PCB Defective

A3 Easy Fix

Condensate Level Abnormal

A5 Moderate

Freeze-Up / Overheat Protection

A6 Moderate

Indoor Fan Motor Fault

A7 Easy Fix

Swing Flap Motor Fault

C4 Moderate

Heat Exchanger Temperature Sensor Fault

C5 Moderate

Condenser Temperature Sensor Fault

C9 Easy Fix

Room Temperature Sensor Fault

E0 Moderate

Outdoor Unit Protective Device Activated

E1 Moderate

Outdoor PCB Defective

E3 Moderate

High Pressure Fault

E4 Moderate

Low Pressure Fault

E5 Moderate

Compressor Overload Protection

E6 Moderate

Compressor Overcurrent

E7 Easy Fix

Outdoor Fan Motor Fault

F3 Moderate

Discharge Temperature Too High

F6 Moderate

Refrigerant Overcharge

H6 Moderate

Compressor Position Detection Sensor Fault

H8 Moderate

Compressor Current Sensor Fault

J3 Easy Fix

Discharge Pipe Thermistor Fault

L3 Moderate

Electrical Component Temperature Rise

U0 Moderate

Low Refrigerant Detection

U2 Easy Fix

Power Supply Voltage Abnormal

U4 Moderate

Communication Error Between Indoor and Outdoor Units