19
Indoor Unit Diagnostic Guide
Table 11—Indoor Unit Error Display
Operation Lamp
Timer Lamp
Display
LED Status
☆
1 time
X
E0
Indoor unit EEPROM error
☆
2
times
X
E1
Communication malfunction between indoor and outdoor units
☆
4 times
X
E3
Indoor fan speed has been out of control
☆
5 times
X
E4
Indoor room temperature sensor T1 open circuit or short circuit
☆
6 times
X
E5
Evaporator coil temperature sensor T2 open circuit or short circuit
☆
7 times
X
EC
Refrigerant leakage detection
☆
8 times
X
EE
Water-level alarm malfunction
☆
1 time
O
F0
Current overload protection
☆
2 times
O
F1
Open circuit or short circuit of outdoor ambient temperature sensor T4
☆
3 times
O
F2
Open circuit or short circuit of condenser coil temperature sensor T3
☆
4 times
O
F3
Open circuit or short circuit of Compressor discharge temperature sensor T5
☆
5 times
O
F4
Outdoor unit EEPROM error
☆
6 times
O
F5
Outdoor fan speed has been out of control
☆
7 times
O
F6
T2B sensor error
☆
8 times
O
F7
Lifting-panel communication error
☆
9 times
O
F8
Lifting-panel malfunction
☆
10 times
O
F9
Lifting-panel is not closed
☆
1 time
☆
P0
IPM malfunction
☆
2 times
☆
P1
Over voltage or over low voltage protection
☆
3 times
☆
P2
High temperature protection of compressor top
☆
4 times
☆
P3
Outdoor low temperature protection
☆
5 times
☆
P4
Inverter compressor drive error
☆
6 times
☆
P5
Mode conflict
☆
7 times
☆
P6
Compressor low-pressure protection
☆
8 times
☆
P7
Outdoor IGBT temperature sensor error
O (light) X (off)
☆ (
flash
)