Fault Diagnosis - Daikin FTS50BVMB Operation Manual

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 CANSEL button repeatedly until a continuous beep is produced.
• The code indication changes in the sequence shown below, and notifies with along beep.
CODE
00
U0
SYSTEM
U2
U4
A1
A5
INDOOR UNIT A6
C4
C9
EA
E5
E6
E7
E8
F3
H6
OUTDOOR
UNIT
H8
H9
J3
J6
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 CANSEL button down for 5 seconds. The code display also
cancel itself if the button is not pressed for 1 minute.
22
O N
C
ON/OFF
TEMP
POWERFUL
MODE FAN SWING
ON CANCEL
OFF
TIMER
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
FAULTY COMPRESSOR START UP
DC FAN MOTOR FAULT
OPERATION HALT DUE TO DETECTION OF INPUT OVER CURRENT
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
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
OUTPUT OVERCURRENT
FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
" "
indication flashes on the
TIMER CANSEL button
It cancels the timer setting.
MEANING
NORMAL
FAN MOTOR FAULT
OL STARTED
CT ABNORMALITY