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10. Troubleshooting
Indoor unit error code explanation:
10.1
For
FSFMIF-90AE2 FSFIF-121AE2
Indoor EEPROM malfunction
Communication malfunction between indoor and outdoor units
Indoor fan speed has been out of control
Open or short circuit of T1 temperature sensor
Open or short circuit of T2 temperature sensor
Overcurrent protection (For some units)
Open or short circuit of T4 temperature sensor
Open or short circuit of T3 temperature sensor
Open or short circuit of T5 temperature sensor
Outdoor EEPROM malfunction (For some units)
Outdoor fan speed is out of control
Open or short circuit of T2B temperature sensor (For free-match indoor units)
IPM module malfunction
Over voltage or over low voltage protection
Too low ambient temperature protection
Inverter compressor drive protection
Mode conflict
Low pressure protection of compressor
For :
FSFMIF-70AE2
Open or short circuit of T1 temperature sensor
Open or short circuit of T2 temperature sensor
Communication malfunction between indoor and outdoor units.
Outdoor fan malfunction
Indoor EEPROM malfunction
IPM module protection
Open or short circuit of T3 or T4 temperature sensor or Outdoor unit
EEPROM parameter error
Voltage protection
Inverter compressor drive protection
Indoor fan speed has been out of control.
Mode conflict
)
FSFMIF-180AE2
Malfunction
X(off) ☆(flash at 2Hz)
O (on)
Malfunction
O(light) X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)
-29-
Timer Lamp
X
X
X
X
X
O
O
O
O
O
O
O
☆
☆
☆
☆
☆
☆
Running
Timer lamp
lamp
☆
X
X
X
X
☆
X
☆
☆
☆
☆
X
☆
☆
☆
☆
☆
◎
O
☆
X
☆
Operation Lamp
(flashes)
1
2
4
5
6
1
2
3
4
5
6
7
1
2
4
5
6
7
Defrosting lamp
X
☆
X
O
X
☆
☆
O
X
☆
O
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