Fault Diagnosis - Daikin FTXS50G2V1B Operation Manual

Fault diagnosis.

FAULT DIAGNOSIS BY REMOTE CONTROLLER
In the ARC452A 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 "
the temperature display section.
TIMER CANCEL button
It cancels the timer setting.
2. Press the TIMER CANCEL button repeatedly until a continuous beep is produced.
• The code indication changes as shown below, and notifies with a long beep.
CODE
00
UA
SYSTEM U0
U2
U4
A1
A5
INDOOR UNIT A6
C4
C9
EA
E1
E5
E6
E7
E8
F3
F6
H0
OUTDOOR
UNIT
H6
H8
H9
J3
J6
L3
L4
L5
P4
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.
INDOOR-OUTDOOR UNIT COMBINATION FAULT
REFRIGERANT SHORTAGE
DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
INDOOR PCB DEFECTIVENESS
HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
FAULTY SUCTION AIR TEMPERATURE SENSOR
COOLING-HEATING SWITCHING ERROR
CIRCUIT BOARD FAULT
FAULTY COMPRESSOR START UP
DC FAN MOTOR FAULT
OVERCURRENT INPUT
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
HIGH PRESSURE CONTROL (IN COOLING)
OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
DC CURRENT SENSOR FAULT
FAULTY SUCTION AIR TEMPERATURE SENSOR
FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
ELECTRICAL PARTS HEAT FAULT
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
OUTPUT OVERCURRENT
FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
" indication flashes on
MEANING
NORMAL
FAN MOTOR FAULT
OL STARTED
SENSOR FAULT
35