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Page 12
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
1O
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
9O
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
5On
F4
15 Outdoor Fan speed (DC Fan Motor only) malfunction 6 On
F5
16 T2B Sensor error 7 On
F6
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
27 Outdoor IGBT Sensor error 8 Flash
P7
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