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Error Codes
Number
Cause
The number
of flashes per
second
Timer indicator
Error
Code
1
Indoor EEPROM (Electrically Erasable Programmable
Read-Only Memory) error
1
OFF
E0
2
Indoor and outdoor unit communication malfunction
2
OFF
E1
3
Indoor fan speed malfunction
4
OFF
E3
4
Indoor room temperature sensor error
5
OFF
E4
5
Evaporator coil temperature sensor error
6
OFF
E5
6
Refrigerant leak detection system malfunction
7
OFF
EC
7
Water level alarm malfunction
8
OFF
EE
8
Dual indoor unit (twin model only) communication
malfunction
9
OFF
E8
9
Other twin model malfunction
10
OFF
E9
10
Overload protection
1
ON
F0
11
Outdoor temperature sensor error
2
ON
F1
12
Outdoor condenser pipe sensor error
3
ON
F2
13
Discharge air temperature sensor error
4
ON
F3
14
Outdoor EEPROM (Electrically Erasable Programmable
Read-Only Memory) error
5
ON
F4
15
Outdoor fan speed (DC fan motor only) malfunction
6
ON
F5
16
Inverter module IPM protection
1
Flash
P0
17
High/Low voltage protection
2
Flash
P1
18
Compressor top overheating protection
3
Flash
P2
19
Outdoor low temperature protection
4
Flash
P3
20
Compressor drive error
5
Flash
P4
21
Mode conflict
6
Flash
P5
22
Compressor low-pressure protection
7
Flash
P6
23
Outdoor IGBT sensor error
8
Flash
P7
