Troubleshooting
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
E 1
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
F 1
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 T2b sensor error 7 On
F6
17
18
19
20
Inverter module IPM protection 1 Flash
P0
21
High/Low voltage protection 2 Flash
P 1
22
Compressor top overheating protection 3 Flash
P2
23
Outdoor low temperature protection 4 Flash
P3
24
Compressor drive error 5 Flash
P4
Mode conflict 6 Flash
P5
Compressor low-pressure protection 7 Flash
P6
Outdoor IGBT sensor error 8 Flash
P7
Page 13
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