Troubleshooting by Remote Controller
SiUS281117
Service Diagnosis
103
2.3
Error Codes and Description
Error code
Contents of Error
Page
Referred
Indoor Unit
A0
Error of External Protection Device
A1
Indoor Unit PCB Abnormality
A3
Drain Water Level System Abnormality
A6
Indoor Unit Fan Motor Abnormality
A7
Swing Flap Motor Abnormality / Lock
A8
Abnormal Power Supply Voltage
A9
Electronic Expansion Valve Coil Abnormality
AF
Drain System Abnormality
AJ
Capacity Setting Abnormality
C1
Transmission Error between Indoor Unit PCB and Fan PCB
C4
Heat Exchanger (Liquid pipe) Thermistor Abnormality
C5
Heat Exchanger (Gas Pipe) Thermistor Abnormality
C6
Combination Error between Indoor Unit PCB and Fan PCB
C9
Suction Air Thermistor Abnormality
CC
Humidity Sensor System Abnormality
CJ
Room Temperature Thermistor in Remote Controller Abnormality
Outdoor Unit
E1
Outdoor Unit PCB Abnormality
E3
High Pressure Abnormality
E4
Actuation of Low Pressure Sensor
E5
Inverter Compressor Motor Lock
E7
Outdoor Unit Fan Motor Abnormality
E9
Electronic Expansion Valve Coil Abnormality
F3
Discharge Pipe Temperature Control Error
F6
Refrigerant Overcharged
H3
High Pressure Switch Abnormality
H7
Outdoor Unit Fan Motor Signal Abnormality
H9
Outdoor Air Thermistor Abnormality
J3
Discharge Pipe Thermistor Abnormality
J5
Suction Pipe Thermistor Abnormality
J6
Outdoor Unit Heat Exchanger Thermistor Abnormality
JA
High Pressure Sensor Abnormality
JC
Low Pressure Sensor Abnormality
L1
Outdoor Unit PCB Abnormality
L4
Radiation Fin Temperature Rise
L5
Momentary Overcurrent of Inverter Compressor
L8
Electronic Thermal (Time Lag)
L9
Inverter Startup Error
LC
Transmission Error (between Control and Inverter PCB)
P4
Radiation Fin Thermistor Abnormality
System
U0
Refrigerant Shortage
U2
Power Supply Voltage Abnormality
U3
Check Operation not Executed
U4
Transmission Error (between Indoor Units and Outdoor Units)
U5
Transmission Error (between Remote Controller and Indoor Unit)
U8
Transmission Error (between Main and Sub Remote Controllers)
UE
Transmission Error (between Centralized Remote Controller and Indoor Unit)
UF
System is not Set yet
The system operates for error codes indicated in black squares, however, be sure to check and repair.