Operation Manual

32
Troubleshooting
 FAULT DIAGNOSIS BY REMOTE CONTROLLER
In the ARC447A3, the temperature display sections on the main unit indicate corresponding codes.
1. Hold the timer cancel button down for 5 seconds, with the remote controller set toward the indoor unit.
CANCEL button
It cancels the timer setting.
2. The temperature display on the remote controller changes to the error code display and
a long beep noties this indication change.
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)
U7 CIRCUIT BOARD TRANSMISSION FAULT
INDOOR UNIT
AH STREAMER FAULT
A1 INDOOR PCB DEFECTIVENESS
A5 HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR
A6 FAN MOTOR FAULT
C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
C7 FRONT PANEL OPEN/CLOSE FAULT
C9 FAULTY SUCTION AIR TEMPERATURE SENSOR
OUTDOOR UNIT
EA COOLING-HEATING SWITCHING FAULT
E1 CIRCUIT BOARD FAULT
E5 OL STARTED
E6 FAULTY COMPRESSOR START UP
E7 DC FAN MOTOR FAULT
E8 OVERCURRENT INPUT
FA EJECTION PRESSURE FAULT
F3 HIGH TEMPERATURE DISCHARGE PIPE CONTROL
F6 HIGH PRESSURE CONTROL (IN COOLING)
H0 SENSOR FAULT
H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR
H8 CT ABNORMALITY
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
• To cancel indication of error code, hold the timer cancel button down for 5 seconds.
The code display also cancels itself if the button is not pressed for 1 minute.
01_EN_3P226009-1A.indd 32 10/29/2012 2:12:14 PM