Error Contents - Fujitsu ASY9LSBCW Service Manual

Self-diagnosis function table (Flashing LED Display)
Applicable model : ASY9LSBCW, ASY12LSBCW
* Detailed Trouble Display (secondary level) can be indicated by pressing Test Operation button.
Trouble Display (primary)
Error Operation
Serial signal Normal
error
Indoor unit 0.5sec
thermistor 2 times
error
Outdoor unit 0.5sec
thermistor 3 times
error
Indoor unit 0.5sec
control error 4 times
2005.02.17

ERROR CONTENTS

Detailed Trouble Display (by Test Button)
Timer Error
1 sec Serial reverse signal error
blinking at operation start up
Signal reverse signal error
during operation
Serial forward signal error
at operation start up
Serial forward signal error
during operation
0.1sec Indoor temperature
blinking thermistor open
Pipe thermistor
open or short
0.1sec Discharge thermistor
blinking open or short
Heat exchanger
thermistor open
Outdoor temperature
thermistor open or short
0.1sec Forced automatic SW
blinking welded
Main relay welded
Power interruption error
Operation Timer
0.1sec 0.5sec When a signal is not read continuously for 10 secs
from power relay ON immediately after operation starts
blinking 2 times
>>Cooling 0 code transmission, automatic reset
When a signal is not read for 20 secs thereafter
>>Trouble display continues and power relay OFF
>>Permanent stop
0.1sec 0.5sec When a signal is not read continuously for 10 secs
from power relay ON immediately after operation starts
blinking 3 times
>>Cooling 0 code transmission, automatic reset
When a signal is not read for 20 secs thereafter
>>Trouble display continues and power relay OFF
>>Permanent stop
0.1sec 0.5 sec Normal Serial Forward Signal can not be
blinking 4 times received more than 10 secs
>>Releases when it becomes normal
0.1sec 0.5sec Normal Serial Forward Signal can not be
blinking 5 times received more than 10 secs ( after receiving
effective forward transfer signal)
>>Releases when it becomes normal
0.1sec 0.5sec Thermistor detection value is open when
blinking 2 times AC plug is inserted
>>Releases when value becomes normal
0.1sec 0.5sec Thermistor detection value is open or short
blinking 3 times when AC plug is inserted
>>Releases when value becomes normal
0.1sec 0.5sec Thermistor detection value is open or short
blinking 2 times
>>Outdoor unit stops
0.1sec 0.5sec Thermistor detection value is open
blinking 3 times
>>Outdoor unit stops
0.1sec 0.5sec Thermistor detection value is open or short
blinking 4 times
>>Outdoor unit stops
0.1sec 0.5sec Forced Auto SW is ON for more than
blinking 2 times 10 secs continuously
>>Error is indicated while it is ON
Normal Operation other than error indication
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
Normal operation except error indication
0.1sec 0.5sec 50/60Hz is not detected after 4 secs of
blinking 4 times power ON.
>>Error is indicated and unit is stopped
7
Detailed Error Item
Releases when it becomes normal
Releases when it becomes normal
Releases when it becomes normal
signal is input on normal operation