39
8. Troubleshooting
8.1 Indoor Unit Error Display
Operation lamp
Timer lamp
Display LED STATUS
☆
1 time
X
E0
Indoor unit EEPROM parameter error
☆
2 times
X
E1
Indoor / outdoor units communication error
☆
3 times
X
E2
Zero-crossing signal detection error
☆
4 times
X
E3
Indoor fan speed has been out of control
☆
5 times
X
E4
Open circuit or short circuit of indoor room temperature T1
sensor
☆
6 times
X
E5
Open circuit or short circuit of evaporator coil temperature T2
sensor
☆
7 times
X
EC
Refrigerant Leakage Detection
☆
1 times
O
F0
Overload current protection
☆
2 times
O
F1
Open circuit or short circuit of outdoor ambient T4 temperature
sensor
☆
3 times
O
F2
Open circuit or short circuit of condenser coil temperature T3
sensor
☆
4 times
O
F3
Open circuit or short circuit of compressor discharge T5
temperature sensor
☆
5 times
O
F4
Outdoor unit EEPROM parameter error
☆
6 times
O
F5
Outdoor fan speed has been out of control
☆
1 times
☆
P0
IPM malfunction or IGBT over-strong current protection
☆
2 times
☆
P1
Over voltage or over low voltage protection
☆
5 times
☆
P4
Inverter compressor drive error
O
（
light
）
X
（
off
）
☆（
flash
）
Summary of Contents for FSAI-SU-120AE2
Page 12: ...12 4 2 Wiring Diagram Indoor unit FSAI SU 90AE2 FSAI SU 120AE2 Outdoor unit FSOAI SU 90AE2 ...
Page 13: ...13 Outdoor unit FSOAI SU 120AE2 ...
Page 45: ...45 8 2 6 Refrigerant Leakage Detection diagnosis and solution EC ...
Page 46: ...46 8 2 7 IPM malfunction or IGBT over strong current protection diagnosis and solution P0 ...
Page 47: ...47 8 2 8 Over voltage or too low voltage protection diagnosis and solution P1 ...
Page 48: ...48 8 2 9 High temperature protection of compressor top diagnosis and solution P2 ...
Page 49: ...49 8 2 10 Inverter compressor drive error diagnosis and solution P4 ...
