Fault Diagnosis - Daikin D-Series Service Manual

Instruction

Fault diagnosis

FAULT DIAGNOSIS BY REMOTE CONTROLLER
In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes.
1. When the TIMER CANCEL button is held down for 5 seconds, a "
temperature display section.
2. Press the TIMER CANCEL button repeatedly until a continuous beep is produced.
• The code indication changes in the sequence shown below, and notifies with along beep.
SYSTEM
INDOOR UNIT
OUTDOOR
UNIT
NOTE
1. A short beep and two consecutive beeps indicate non-corresponding codes.
2. To cancel the code display, hold the TIMER CANCEL button down for 5 seconds. The code display also
cancel itself if the button is not pressed for 1 minute.
162
CODE
00
U0
U2
U4 FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
A1
A5 HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR
A6
C4
C9
EA
E5
E6
E7
E8 OPERATION HALT DUE TO DETECTION OF INPUT OVER CURRENT
F3
F6
H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
H8
H9
J3
J6
L4 HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
L5
P4 FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
O N
C
HOME LEAVE
ON/OFF
TEMP
POWERFUL
MODE FAN SWING
SILENT SENSOR
TIMER CANCEL button
ON CANCEL
It cancels the timer setting.
OFF
TIMER
MEANING
NORMAL
REFRIGERANT SHORTAGE
DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
INDOOR PCB DEFECTIVENESS
FAN MOTOR FAULT
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
FAULTY SUCTION AIR TEMPERATURE SENSOR
COOLING-HEATING SWITCHING ERROR
OL STARTED
FAULTY COMPRESSOR START UP
DC FAN MOTOR FAULT
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
HIGH PRESSURE CONTROL (IN COOLING)
CT ABNORMALITY
FAULTY SUCTION AIR TEMPERATURE SENSOR
FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
OUTPUT OVERCURRENT
" indication flashes on the
System Configuration
SiBE12-522