Fujitsu AOY90 User Manual

ERROR
CONTENTS
1F
Transmission
3, Reset condition
ERROR CAUSE
4,
Transmission adapter com-
REMEDY
ERROR
CODE
error
For 2-1), communication
with indoor unit restored.
For 2-2), normal communi-
cation restored between
transmission adapter con-
trol PC board and transmi-
ssion adapter communica-
tion PC board.
munication PC board or indoor
unit communication PC board
insertion faulty.
4, Check insertion of communication
adapter communication PC board
and indoor unit communication PC
board.
5,
Initialization not performed
after indoor unit address cha-
nged.
5,
Perform initialization.
6, PC board faulty 6,
1)
If communication error generated
after parallel-parallel communication
error generated, replace PC boards
in following order, and check opera-
tion.
1
Transmission adapter communi-
cation PC board.
2
Transmission adapter control PC
board.
2)
For other cases, replace PC boards
in following order, and check operation.
1
Indoor unit communication PC board
2
Indoor unit control PC board
21
Software error
(OUTPUT)
1,
Generation condition
PC initialized by momentary
power interruption,etc.
When operation setting, modi-
fication, etc.
performed from central remote
controller and setting contents
reset.
1,
Affect of extraneous noise
1-1 Check error continuity.
1)
If error reset automatically, PC board
is normal.
therefore, remove noise sources near
central remote controller.
2)If error not reset automatically, check
following.
2,
Corresponding operation
Error display. Only error code
display operation is possible.
Other operations are ineffective.
1-2
After ACL key pressed, or power
turned on again:
1) If error not generated again, PC board
is normal.
Therefore, remove noise sources near
control panel.
2)If error generated again, check follow-
ing, in addition to removing noise sources.
2,
Power off or power supply
voltage abnormal.
2, Check power supply voltage and
check operation after turning on
power.
3,
PC board faulty.
3,
Replace PC boards in following
order, and check operation.
1
Transmission adapter control PC
board.
2
Operation panel PC board.
22
Software error
(INPUT)
1,
Generation condition
Operation state of indoor
units memorized in transmiss-
ion adapter memory ab-
normal.
2,
Corresponding operation
Error display. Central remote
controller operation is possible.
3,
Reset condition
When contents of memory
memorized in transmission
adapter memory restored
to normal.
1,
Affect of extraneous noise
1-1
Check error continuity.
1) If error reset automatically, PC board
is normal. Therefore, remove noise so-
urces near central remote controller.
2)If error not reset automatically, check
following.
1-2 After RESET key on transmission
adapter control PC board pressed,
or power turned on again:
1) If error not generated again, PC board
is normal. Therefore, remove noise
sources near operation panel.
2)
If error generated again, check foll-
owing, in addition to removing noise
sources.
2,
Transmission adapter cont-
2, Replace transmission adapter co-
ntrol PC board.
rol PC board faulty.
– 113 –

Fujitsu AOY90 Specifications

General

Brand	Fujitsu
Model	AOY90
Category	Air Conditioner
Language	English