Fault Diagnosis - Daikin FTKS20CVMB Service Manual

SiBE04-401

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.
30
System Configuration
HOME LEAVE
POWERFUL
MODE
SILENT
ON
OFF
CODE
00
U0
U2 DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
U4 FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
A1
A5 HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR
A6
C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
C9
EA
E5
E6
E7
E8 OPERATION HALT DUE TO DETECTION OF INPUT OVER CURRENT
F3 HIGH TEMPERATURE DISCHARGE PIPE CONTROL
F6
H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
H8
H9
J3 FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
J6 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
L4 HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
L5
P4 FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
" indication flashes on the
O N
C
ON/OFF
TEMP
FAN SWING
SENSOR
TIMER CANCEL button
CANCEL
It cancels the timer setting.
TIMER
MEANING
NORMAL
REFRIGERANT SHORTAGE
INDOOR PCB DEFECTIVENESS
FAN MOTOR FAULT
FAULTY SUCTION AIR TEMPERATURE SENSOR
COOLING-HEATING SWITCHING ERROR
OL STARTED
FAULTY COMPRESSOR START UP
DC FAN MOTOR FAULT
HIGH PRESSURE CONTROL (IN COOLING)
CT ABNORMALITY
FAULTY SUCTION AIR TEMPERATURE SENSOR
OUTPUT OVERCURRENT
Instruction
C:3P119293-2
87