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2.2 Indoor unit malfunction
For Console
NO.
1
Open or short circuit of T1 temperature sensor
2
Open or short circuit of T2 temperature sensor
Communication malfunction between indoor and outdoor
3
units.
4
Outdoor fan speed has been out of control
5
Indoor EEPROM malfunction
6
IPM module protection
Open or short circuit of T3 or T4 temperature sensor or
7
Outdoor unit EEPROM parameter error
8
Over voltage or over low voltage protection
9
Top temperature protection of compressor
10
Inverter compressor drive protection
11
Indoor fan Speed has been out of control.
For 12K & 24K units (excluding console):
NO.
Malfunction
Open or short circuit of T1 temperature
1
sensor
Open or short circuit of T2 temperature
2
sensor
Communication malfunction between indoor
3
and outdoor units.
4
Full-water malfunction
5
Indoor EEPROM malfunction
6
IPM module protection
Open or short circuit of T3 or T4 temperature
7
sensor or outdoor EEPROM is malfunction
8
Outdoor fan is out of control
9
Refrigerant Leakage Detection
Communication malfunction between main
10
PCB and up-down panel PCB
11
Up-down panel malfunction
12
Indoor fan speed is out of control
13
Outdoor unit voltage protection
14
Compressor top temperature protection
15
Outdoor unit over-current protection
16
Inverter compressor drive error
Electrical Control System
Malfunction
O(light) X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)
Running
lamp
☆
X
X
X
☆
☆
☆
☆
O
☆
X
☆
☆
☆
☆
☆
O(light) X(off) ☆(flash at 2.5Hz) ◎(flash at 0.5Hz)
Running lamp
Timer lamp
X
☆
X
X
X
☆
X
☆
☆
☆
X
☆
☆
☆
☆
☆
O
☆
☆
◎
O
☆
Timer
Defrosting
lamp
lamp
X
X
X
☆
☆
X
X
X
X
☆
X
X
O
X
O
☆
X
☆
X
☆
☆
☆
O
O
O
X
X
O
☆
☆
◎
X
Troubleshooting
Defrosting lamp
X
☆
X
O
X
☆
☆
O
X
X
☆
Alarm
Display(nixie
lamp
tube)
X
E0
X
E1
X
E2
E3
☆
X
E4
O
E5
X
E6
X
E7
EC
☆
☆
F0
☆
F1
X
F5
O
P0
X
P1
X
P2
X
P4
119
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