
67
English
INST
ALLA
TION P
A
R
TS
The table below give indication about self diagnostic routine. Some of error code requires activities
exclusively for Authorized Service Center.
Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB LED, both MAIN PCB and
INVERTER PCB.
No.
Error
Code
Meaning
Remarks
1
E108
Error due to repeated address setting(when 2 or
more devices has same address within the network)
Check on repeated indoor unit main
address
2
E121
Error on indoor temperature sensor of indoor
unit(Short or Open)
Indoor unit Room Thermistor Open/
Short
3
E122
Error on EVA IN sensor of indoor unit(Short or Open)
Indoor unit EVA_IN Thermistor Open/
Short
4
E123
Error on EVA OUT sensor of indoor unit(Short or
Open)
Indoor unit EVA_OUT Thermistor Open/
Short
5
E153
Error on float switch (2nd detection)
"Indoor unit Float Switch Open/Short
Drain Pump operation Check"
6
E154
RPM feedback error of indoor unit
Check on indoor unit indoor Fan
operation
7
E162
Outdoor unit EEPROM Read/Write error (H/W)
Check Outdoor EEPROM PBA
8
E163
Outdoor unit EEPROM Read/Write error (Option)
Check Outdoor EEPROM Data
9
E198
Error on thermal fuse of indoor unit (Open)
Thermal Fuse Open Check of indoor unit
Terminal Block
10
E201
"Communication error between indoor and outdoor
unit(Installation number setting error repeated
indoor unit address,indoor unit communication cable
error)"
Check indoor quantity setting in outdoor
11
E202
"Communication error between indoor and outdoor
unit(Communication error on all indoor unit, outdoor
unit communication cable error)"
Check electrical connection and setting
between indoor unit and outdoor unit
12
E205
Communication error on all PBA within the outdoor
unit C-Box,communication cable error
-
13
E206
E206-C002 : Fan PBA communication error,
E206-C003 : INV PBA communication error
-
14
E221
Error on outdoor temperature sensor (Short or Open) Check Outdoor sensor Open / Short
15
E231
Error on outdoor COND OUT sensor (Short or Open)
Check Cond-Out sensor Open / Short
16
E251
Error on discharge temperature sensor of compressor
1 (Short or Open)
Check Discharge sensor Open / Short
17
E320
Error on OLP sensor (Short or Open)
Check OLP sensor Open / Short
18
E346
Error due to operation failure of Fan2
Fan2 error
19
E347
Motor wire of Fan2 is not connected
Fan2 error
Troubleshooting
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