Fujitsu AOYR14LCL Service Instruction page 55

Self - diagnosis function and Checking points
Error Indication
Error
Operation Timer (Protection)
(RED) (GREEN)
0.5 sec 0.5 sec VDD permanence stop
4 times 7 times protection
(Electric air clean)
0.5 sec Reverde-VDD permanence
8 times stop protection
(Electric air clean power
supply circuit abnormal)
0.5 sec 0.5 sec IPM protection
5 times 2 times
0.5 sec CT error
3 times
0.5 sec Compressor location error
5 times
0.5 sec Outdoor fan error
6 times (DC motor)
When the air cleanness monitor trial protection operates 4 times.
> Only clean air permanent stop.
[Diagnosis Point]
The front panel is closed.
The foreign body such as dust doesn't adhere.
The air clean operation signal was detected for 1 minute at the time of air clean mode OFF.
> All stop. Not operate remote controller.
[Diagnosis Point]
Electric air clean defective.
Controller PCB defective.
Abnormal current value of IPM is detected.
> Permanent stop.
[Diagnosis Point]
Heat radiation is blocked (inlet/outlet).
Check if outdoor fan is defetcive (does not rotate).
Controller PCB defective (Refer to after mentioned "IPM diagnosis").
Refrigeration cycle defective (Refer to after mentioned "refrigeration cycle diagnosis").
The current value during the operation after 1 minute from starting up the compressor is 0A.
> permanent stop.
[Diagnosis Point]
Controller PCB defective.
The compressor speed does not synchronze with the control signal. (Including start up failure of the compressor).
> permanent stop.
[Diagnosis Point]
Check if 2-way valve or 3-way valve is left open.
Check the compressor (Winding resistance value, loose lead wire).
Refrigeration cycle defective (Refer to after mentioned "refrigerant cycle diagnosis")
Either the outdoor fan motor abnormal current or location error was detected.
> Permanent stop.
[Diagnosis Point]
Fan motor connector loose/ defective contact.
Fan motor defective.
Controller PCB defective.
Diagnosis Method