Fujitsu AB 14LBAJ Series Service Instruction page 41

For AS*18/ 24LBAJ
For AB*14L - 24L / AU*12L - 18L
The OPERATION, TIMER and SWING lamps operate
as follows according to the error contents.
Error contents
Indoor EEPROM abnormal
(Model No.)
Room temperature thermistor error
(Opened)
Room temperature thermistor error
(Short circuited)
Indoor heat exchanger temperature
thermistor error (Opened)
Indoor heat exchanger temperature
thermistor error (Short
Water drain abnormal
Communication error
(Serial reverse transfer error)
Outdoor communication signal error
(Forward transfer signal error)
Indoor fan error
Outdoor heat exchanger temperature
thermistor error
Outdoor temperature thermistor error
Outdoor discharge pipe temperature
thermistor error
Compressor temperature
Pressure switch error
2-way valve temperature
3-way valve temperature
Connected indoor unit error
IPM error
Compressor rotor location cannot detect
(permanent stop)
Outdoor unit fan motor error
Main CPU-Sub CPU communication error
:
Fast flashing
circuited)
thermistor error
thermistor error
thermistor error
:
Slow flashing
Error display
OPERARION TIMER
(RED) (GREEN)
2 times
2 times
3 times
3 times
4 times
5 times
5 times
6 times
3 times
4 times
5 times
8 times
9 times
10 times
13 times
14 times
:
Off
02-02
Trouble
shooting
SWING
(ORANGE)
9
3
4
6
2
11
10
5
7
8
12
13
21
2 times
3 times 22
23
4 times
14
17
18
5 times
24