Fujitsu AOY90 User Manual

ERROR
CONTENTS
ERROR CAUSE
REMEDY
ERROR
CODE
1F
1. Generation condition.
Communication between
indoor unit and outdoor unit
exceeds certain time.
2. Corresponding operation.
Current operation continued,
error display to standard
wired remote controller, and
display to indoor unit LED.
3. Reset condition.
Communication between
indoor unit and outdoor unit
restored.
1. Generation condition.
Indoor unit communication
PC board not initialized
normally.
2. Corresponding operation.
Error display to standard
wired remote controller and
display to indoor unit LED.
3. Reset condition.
Indoor unit communication
PC board initialized normally.
1. When power turned off, then turned
back on:
(1) If error not generated again, PC
board is normal. Therefore, remove
noise sources near indoor unit.
(2) If error generated again, check
following, in addition to removing noise
sources.
1. Replace PC boards in following order,
and check operation.
(1) Indoor unit communication PC board.
(2) Indoor unit control PC board.
1. Effect of extraneous noise.
2. PC board faulty.
Transmission
error
20 Node setting
error
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. Check if communication line connected
to each indoor unit. Check for open
communication line and loose wiring.
3. Check insertion of indoor unit
communication PC board and outdoor
unit communication PC board.
4. (1) If communication with some indoor
units in same refrigerant system is
abnormal and compressor operates,
replace PC boards in following order
and check operation:
1 Indoor unit communication PC board
2 Indoor unit control PC board
(2) If communication with all indoor units
in same refrigerant system is abnormal
and compressor does not operate,
replace PC boards in following order
and check operation:
1 Outdoor unit communication PC board.
2 Outdoor unit control PC board.
3 Indoor unit communication PC board.
4 Indoor unit control PC board.
2. Communication line not
connected, connection faulty,
or line open.
3. Indoor unit communication PC
board or outdoor unit
communication PC board
insertion faulty.
4. PC board faulty.
1. Effect of extraneous noise.
– 94 –

Fujitsu AOY90 Specifications

General

Brand	Fujitsu
Model	AOY90
Category	Air Conditioner
Language	English