Error Codes

To self diagnose any underline issue with your Daikin product refer to the given set of error codes.

Fault diagnosis by remote controller

The remote controller can receive relevant error codes from the indoor unit.

When Press Cancel is held down for about 5 seconds, "00" blinks in the temperature display section.
Press Press Cancel repeatedly until a long beep is produced.
  • The code indication changes as shown below, and notifies with a long beep.
SYSTEMCODEMEANING
00NORMAL
UAINDOOR-OUTDOOR UNIT COMBINATION FAULT
U0REFRIGERANT SHORTAGE
U2DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
U4FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
INDOOR UNITA1INDOOR PCB DEFECTIVENESS
A5FREEZE-UP PROTECTOR
A6FAN MOTOR FAULT
C4FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
C9FAULTY SUCTION AIR TEMPERATURE SENSOR
OUTDOOR UNITE1CIRCUIT BOARD FAULT
E5OL STARTED
E6FAULTY COMPRESSOR START UP
E7DC FAN MOTOR FAULT
E8OVERCURRENT INPUT
F3HIGH TEMPERATURE DISCHARGE PIPE CONTROL
F6HIGH PRESSURE CONTROL (IN COOLING)
H0SENSOR FAULT
H6OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
H8DC CURRENT SENSOR FAULT
H9FAULTY SUCTION AIR TEMPERATURE SENSOR
J3FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
J6FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
L3ELECTRICAL PARTS HEAT FAULT
L4HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
L5OUTPUT OVERCURRENT
P4FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
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