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Troubleshooting
Error Codes
• Inverter Split Type
Number
Cause
Timer
indicator
Error
Code
1
Indoor EEPROM (Electrically Erasable
Programmable Read-Only Memory) error
1 O
E0
2 Indoor and outdoor unit communication malfunction 2 O
E 1
3 Indoor fan speed malfunction 4 O
E3
4 Indoor room temperature sensor error 5 O
E4
5 Evaporator coil temperature sensor error 6 O
E5
6 Refrigerant leak detection system malfunction 7 O
EC
7 Water level alarm malfunction 8 O
EE
8
Dual indoor unit (twin model only)
communication malfunction
9 O
E8
9 Other twin model malfunction 10 O
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
17
Auto-lifting panel communication error
8 On
F7
18
Auto-lifting panel malfunction
9 On
F8
19
Auto-lifting panel is open
10 On
F9
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
25
Mode conflict
6 Flash
P5
26
Compressor low-pressure protection
7 Flash
P6
Outdoor IGBT sensor error
8 Flash
P7
indicator flashes
Operation