Troubleshooting
Troubleshooting
Fault diagnosis by remote controller
The remote controller can receive relevant error codes from the indoor unit.
1. When [CANCEL] is held down for about 5 seconds," DO" blinks in the
temperature display section.
2. Press [CANCEL] repeatedly until a long beep is produced.
• The code indication changes as shown below, and notifies with a long beep.
CODE
MEANING
00
NORMAL
LIA
INDOOR-OUTDOOR UNIT COMBINATION FAULT
SYSTEM
LIO
REFRIGERANT SHORTAGE
U2
DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
U4
FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
A1
INDOOR PCB DEFECTIVENESS
AS
FREEZE-UP PROTECTOR
INDOOR
A6
FAN MOTOR FAULT
UNIT
C4
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
C9
FAULTY SUCTION AIR TEMPERATURE SENSOR
E1
CIRCUIT BOARD FAULT
ES
OL STARTED
E6
FAULTY COMPRESSOR START UP
E7
DC FAN MOTOR FAULT
EB
OVERCURRENT INPUT
F3
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
F6
HIGH PRESSURE CONTROL (IN COOLING)
FB
OPERATION HALT DUE TO COMPRESSOR INTERNAL TEMPERATURE ABNORMALITY
OUTDOOR
HO
SENSOR FAULT
UNIT
H6
OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
HB
DC CURRENT SENSOR FAULT
H9
FAULTY SUCTION AIR TEMPERATURE SENSOR
J3
FAULTY DISCHARGE PIPE TEMPERATURE SENSOR
J6
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
L3
ELECTRICAL PARTS HEAT FAULT
L4
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
LS
OUTPUT OVERCURRENT
P4
FAULTY INVERTER CIRCUIT HEATSINKTEMPERATURE SENSOR
NOTE
• A short beep indicates non-corresponding codes.
• To cancel the code display, hold down (cANcaJ for about 5 seconds.
The code display also cancels itself if the button is not pressed for 1 minute.
II
DAIKIN INDUSTRIES, LTD.
Head office:
Osaka Umeda Twin Towers South
1-13-1, Umeda, Kita-ku, Osaka, 530-0001, Japan
Tokyo office:
Yaesu Central Tower, Tokyo Midtown Yaesu,
2-2-1, Yaesu, Chuo-ku, Tokyo, 104-0028, Japan
http://www.daikin.com
