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26
Fault diagnosis by remote controller
• In case the air conditioner is malfunctioning, you can check the error code via the remote
controller before consulting with service personnel and informing them of the malfunction
code.
1.
When
is held down for about
5 seconds, “
” blinks in the temperature
display section.
2.
Press
repeatedly until a long beep is
produced.
• The code indication changes as shown below, and notifi es you with a long beep.
CODE
MEANING
SYSTEM
00
NORMAL
UA
INDOOR-OUTDOOR UNIT COMBINATION FAULT
U0
REFRIGERANT SHORTAGE
U2
DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE
U4
FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT)
INDOOR
UNIT
A1
INDOOR PCB DEFECTIVENESS
A5
FREEZE-UP PROTECTOR
A6
FAN MOTOR FAULT
C4
FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
C9
FAULTY SUCTION AIR TEMPERATURE SENSOR
OUTDOOR
UNIT
E1
CIRCUIT BOARD FAULT
E5
OL STARTED
E6
FAULTY COMPRESSOR START UP
E7
DC FAN MOTOR FAULT
E8
OVERCURRENT INPUT
F3
HIGH TEMPERATURE DISCHARGE PIPE CONTROL
F6
HIGH PRESSURE CONTROL (IN COOLING)
F8
OPERATION HALT DUE TO COMPRESSOR INTERNAL TEMPERATURE ABNORMALITY
H0
SENSOR FAULT
H6
OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
H8
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
L5
OUTPUT OVERCURRENT
P4
FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR
NOTE
• A short beep indicates non-corresponding codes.
• To cancel the code display, hold
down for about 5 seconds. The code display also clears if no button is pressed for 1 minute.
When the Need Arises
When the Need Arises
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