Daikin AC error Codes Indoor

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Daikin Fault Codes

Indoor Fault Codes

Fault Code Definition Supposed Causes Split Skyair VRV Package

A0

External protection active

External protection wired to T1-T2 active

A1

Failure of indoor PCB

Defect of PCB or noise

A3

High water level

Float switch open circuit

A5

HP control in heating or freeze protection in cooling

Poor airflow, short circuit, EEV, refrigerant charge, indoor coil sensor incorrect value

A6

Fan motor failure

Locked, over current, over load

A7

Failure of louvre motor

Louvre motor/indoor PCB failed

A8

Failure of power supply

Over current of AC input, defect of supply

A9

EEV failure

Defect of EEV motor, indoor PCB

AF

High water level

Float switch open circuit while thermo off

AH

Failure of dust collector

Defect of dust collecting element, PCB

AJ

Capacity setting error

Capacity setting adaptor missing

C1

Communication failure. Between main-sub PCB

Failure of communication fan motor control driver

C4

Indoor coil sensor

Open/short circuit

C5

Suction pipe sensor

Open/short circuit

C6

Failure of fan motor driver

Defect of fan motor sensor, control driver

C7

Front panel driving motor fault

Defect of limit switch, front panel driving motor

C9

Return air sensor fault

Return air sensor open/short circuit

CA

Discharge air sensor fault

Discharge air sensor open/short circuit

CC

Failure of humidity sensor

Failed humidity sensor

CJ

Failure of remote sensor

Defect of remote controller sensor

 

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