Fault Diagnosis - Daikin FTXS20J2V1B Operation Manual

Troubleshooting

Fault diagnosis.

Fault diagnosis by remote controller
In the ARC452A series, the temperature display sections on the
main unit indicate corresponding codes.
1. When
5 seconds, a
temperature display section.
2. Press
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
A6
UNIT
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 2 consecutive beeps indicate non-corresponding codes.
2. To cancel the code display, hold the
cancel itself if the button is not pressed for 1 minute.
42
is held down for
indication flashes on the
" "
repeatedly until a continuous
INDOOR-OUTDOOR UNIT COMBINATION FAULT
DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
FAULTY SUCTION AIR TEMPERATURE SENSOR
COOLING-HEATING SWITCHING ERROR
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
HIGH PRESSURE CONTROL (IN COOLING)
OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
FAULTY SUCTION AIR TEMPERATURE SENSOR
FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
MEANING
NORMAL
REFRIGERANT SHORTAGE
INDOOR PCB DEFECTIVENESS
FAN MOTOR FAULT
CIRCUIT BOARD FAULT
OL STARTED
FAULTY COMPRESSOR START UP
DC FAN MOTOR FAULT
OVERCURRENT INPUT
SENSOR FAULT
DC CURRENT SENSOR FAULT
ELECTRICAL PARTS HEAT FAULT
OUTPUT OVERCURRENT
down for 5 seconds. The code display also