Fujitsu AOY90 User Manual

ERROR
CONTENTS
ERROR CAUSE
REMEDY
ERROR
CODE
Pump down
error
Switch outdoor unit control PC board
pump down DIP SW1-3 from ON to OFF.
Pump down SW remains ON.
1. Generation condition.
Six minutes have elapsed
since pump down performed,
or discharge pressure sensor
PH is 3MPa or higher.
2. Corresponding operation.
1) All compressors and outdoor
fans stop.
2) Error display to outdoor unit
LED and error output to
communication bus line.
3. Reset condition.
Pump down DIP SW1-3
switched from ON to OFF.
28
1. When power turned off, then turned
back on:
1) If error not generated again, PC board
is normal. Therefore, remove noise
sources near outdoor unit.
2) If error generated again, check
following, in addition to removing noise
sources.
2. Replace PC boards in following order,
and check operation.
(1) Outdoor unit communication PC board
(2) Outdoor unit control PC board
1. Affect of extraneous noise.
2. PC board faulty.
Indoor unit error
Error generated at indoor unit
in same refrigerant system.
1. When power turned off, then turned
back on:
1) If error not generated again, PC board
is normal. Therefore, remove noise
sources near outdoor unit.
2) If error generated again, check
following, in addition to removing noise
sources.
1. Affect of extraneous noise.
See indoor unit troubleshooting.
Indoor unit faulty.
2. Check outdoor unit communication PC
board insertion.
2. Outdoor unit communication
PC board insertion faulty.
Node setting
error
1. Generation condition.
Outdoor unit communication
PC board initialization not
performed normally.
2. Corresponding operation.
Error display to outdoor unit
LED.
3. Reset condition.
Outdoor unit communication
PC board initialization
performed normally.
Outdoor unit
circuit board
error 1
1. Generation condition.
Communication between
outdoor unit control PC
board and outdoor unit
communication PC board not
performed normally.
2. Corresponding operation.
1) Current operation continued.
Error display to outdoor unit
LED.
2) When error continues for 90
seconds after error
generation, new
communication error (1F)
output.
3. Reset condition.
Normal communication
restored between outdoor
unit control PC board and
outdoor unit communication
PC board.
3. Replace PC boards in following order,
and check operation.
(1) Outdoor unit communication PC board
(2) Outdoor unit control PC board
3. PC board faulty.
– 108 –

Fujitsu AOY90 Specifications

General

Brand	Fujitsu
Model	AOY90
Category	Air Conditioner
Language	English