Fujitsu AOY9LSAC Service Manual

Self-diagnosis function table (Flashing LED Display)
Applicable model : ASY9LSACW, ASY12LSACW
* Detailed Trouble Display (secondary level) can be indicated by pressing Test Operation button.
Error Operation Timer Error Operation Timer
Serial Signal Normal 1 sec Serial reverse signal error 0.1sec 0.5sec Normal Serial Reverse Signal can not be
Error blinking at operation start up blinking 2 times received more than 10 seconds
>>Releases when it becomes normal
Signal reverse signal error 0.1sec 0.5sec Normal Serial Reverse Signal can not be
during operation blinking 3 times received more than 7 sec (after receiving
effective reverse transfer signal)
>>Releases when it becomes normal
Serial forward signal error 0.1sec 0.5 sec Normal Serial Forward Signal can not be
at operation start up blinking 4 times received more than 10 sec
>>Releases when it becomes normal
Serial forward signal error 0.1sec 0.5sec Normal Serial Forward Signal can not be
during operation blinking 5 times received more than 10 sec ( after receiving
effective forward transfer signal)
>>Releases when it becomes normal
Indoor unit 0.5sec 0.1sec Indoor Temperature 0.1sec 0.5sec Thermister detection value is open when
Thermister 2 times blinking Thermister Open blinking 2 times AC plug is inserted
error
>>Releases when value becomes normal
Pipe Thermister 0.1sec 0.5sec Thermister detection value is open or short
Open or Short blinking 3 times when AC plug is inserted
>>Releases when value becomes normal
Outdoor unit 0.5sec 0.1sec Discharge Thermister 0.1sec 0.5sec Thermistor detection value is open or short
Thermister 3 times blinking Open or Short blinking 2 times
error
>>Outdoor unit stops
Releases when it becomes normal
Heat Exchanger 0.1sec 0.5sec Thermistor detection value is open
Thermister Open blinking 3 times
>>Outdoor unit stops
Releases when it becomes normal
Outdoor Temperature 0.1sec 0.5sec Thermistor detection value is open or short
Thermistor Open or Short blinking 4 times
>>Outdoor unit stops
Releases when it becomes normal
Indoor unit 0.5sec 0.1sec Forced Automatic SW 0.1sec 0.5sec Forced Auto SW is ON for more than
control error 4 times blinking welded blinking 2 times 10 seconds continuously
>>Error is indicated while it is ON
Normal Operation other than error indition
Main Relay welded 0.1sec 0.5sec Serial Reverse Signal is received 1 min.
blinking 3 times after Main relay becomes OFF
>>Error is indicated while serial reverse
signal is input on normal operation
Normal operation except error indication
Power interruption error 0.1sec 0.5sec 50/60Hz is not detected after 2 seconds of
blinking 4 times power ON.
>>Error is indicated and unit is stopped
Trouble Display (primary) Detailed Trouble Display (by Test Button)
Detailed Error Item
IndoorIndoor Indoor Outroor Outdoor Outdoor IndoorIndoor
ERROR CONTENTS
5
2004.10.07

Fujitsu AOY9LSAC Specifications

General

Brand	Fujitsu
Model	AOY9LSAC
Category	Air Conditioner
Language	English