Error Contents - Fujitsu ASY14LSBCW Service Manual

Self-diagnosis function table (Flashing LED Display)
Applicable model : ASY18LSBCW
* 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
2004.10.29

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
blinking 2 times
0.1sec 0.5sec
blinking 3 times
0.1sec 0.5 sec
blinking 4 times
0.1sec 0.5sec
blinking 5 times
0.1sec 0.5sec
blinking 2 times
0.1sec 0.5sec
blinking 3 times
0.1sec 0.5sec
blinking 2 times
0.1sec 0.5sec
blinking 3 times
0.1sec 0.5sec
blinking 4 times
0.1sec 0.5sec
blinking 2 times
0.1sec 0.5sec
blinking 3 times
0.1sec 0.5sec
blinking 4 times
5
Detailed Error Item
When a signal is not read continuously for 10 secs
from power relay ON immediately after operation starts
>>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
When a signal is not read continuously for 10 secs
from power relay ON immediately after operation starts
>>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
Normal Serial Forward Signal can not be
received more than 10 secs
>>Releases when it becomes normal
Normal Serial Forward Signal can not be
received more than 10 secs ( after receiving
effective forward transfer signal)
>>Releases when it becomes normal
Thermistor detection value is open when
AC plug is inserted
>>Releases when value becomes normal
Thermistor detection value is open or short
when AC plug is inserted
>>Releases when value becomes normal
Thermistor detection value is open or short
>>Outdoor unit stops
Releases when it becomes normal
Thermistor detection value is open
>>Outdoor unit stops
Releases when it becomes normal
Thermistor detection value is open or short
>>Outdoor unit stops
Releases when it becomes normal
Forced Auto SW is ON for more than
10 secs continuously
>>Error is indicated while it is ON
Normal Operation other than error indication
Serial Reverse Signal is received 1 min.
after Main relay becomes OFF
>>Error is indicated while serial reverse
signal is input on normal operation
Normal operation except error indication
50/60Hz is not detected after 4 secs of
power ON.
>>Error is indicated and unit is stopped