Daikin ROOM AIR CONDITIONERS Installation Manual download pdf (Page 32)

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Fault diagnosis.

Fault diagnosis by remote controller

The remote controller can receive a corresponding error code from the indoor unit.

When 1.

is held down for 5 seconds, a “ ” indication blinks on the temperature display section.

Press 2.

repeatedly until a continuous beep is produced.

The code indication changes as displayed in the following table, and notiﬁ es with a long beep.•

CODE MEANING

SYSTEM

00 NORMAL

U0 REFRIGERANT SHORTAGE

U2 DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE

U4 FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)

INDOOR

UNIT

A1 INDOOR PCB DEFECTIVENESS

A5 HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR

A6 FAN MOTOR FAULT

C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR

C9 FAULTY SUCTION AIR TEMPERATURE SENSOR

OUTDOOR

UNIT

EA COOLING-HEATING SWITCHING ERROR

E5 OL STARTED

E6 FAULTY COMPRESSOR START UP

E7 DC FAN MOTOR FAULT

E8 OVERCURRENT INPUT

F3 HIGH TEMPERATURE DISCHARGE PIPE CONTROL

H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR

H8 DC CURRENT SENSOR FAULT

H9 FAULTY SUCTION AIR TEMPERATURE SENSOR

J3 FAULTY DISCHARGE PIPE TEMPERATURE SENSOR

J6 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR

L4 HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK

L5 OUTPUT OVERCURRENT

P4 FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR

NOTE

A short beep and two consecutive beeps indicate non-corresponding codes.•

To cancel the code display, hold •

for 5 seconds. The code display also cancel itself if the button is not pressed for

1 minute.

TIMER CANCEL button

Cancels the timer setting.

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Daikin ROOM AIR CONDITIONERS Installation Manual Page 32

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