Fujitsu AOTG34JFTC, Service Manual

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If you use a wireless remote control, the lamps
on the indoor unit will show the error by blinking.
If you use a wired type remote control, error code
will appear on the remote control display.
See the lamp blinking patterns and error codes in
the table.
Indoor unit LED Indoor unit LED
Wired
remote
control Wired
remote
control
E R R O R D E T E C T I O N
Description
OPERATION OPERATION
(green)
TIMER
(orange)
ECONOMY
(green)
(1) (1)
Serial communication error
(1) (2)
Wired remote control
communication error
(1) (5)
Check run unfinished
(2)
(1)
Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]
(2) (2)
Indoor unit capacity error
(2) (3)
Combination error
(2)
(4)
Connection unit number •
error (indoor slave unit)
[Simultaneous Multi]
Connection unit number error •
(indoor unit or branch unit)
[Flexible Multi]
(2)
(7)
Master unit, slave unit set-up
error [Simultaneous Multi]
(3) (2)
Indoor unit PCB model
information error
(3) (5)
Manual auto switch error
(4) (1)
Inlet air temp. sensor error
(4) (2)
Indoor unit Heat Ex. Middle
temp. sensor error
(5)
(1)
Indoor unit fan motor error
(5) (3)
Drain pump error
(5) (7)
Damper error
(5) (15)
Indoor unit error
(6)
(2)
Outdoor unit main PCB model
information error or
communication error
(6) (3)
Inverter error
(6)
(4)
Active filter error, PFC circuit error
(6) (5)
Trip terminal L error
: 0.5s on / 0.5s off
: 0.1s on / 0.1s off
( ) : Number of flashing
Troubleshooting
with a wired remote control.
If an error occurs,
the following display will be shown.
(“Er” will appear in the
set room temperature display.)
Error code
EX. Self-diagnosis
2012.08.07 15
Description
(green)
TIMER
(orange)
ECONOMY
(green)
(6)
(10)
Display PCB microcomputers
communication error
(7)
(1)
Discharge temp. sensor error
(7) (2)
Compressor temp. sensor error
(7) (3)
Outdoor unit Heat Ex. liquid
temp. sensor error
(7) (4)
Outdoor temp. sensor error
(7)
(5)
Suction Gas temp. sensor error
(7) (6)
2-way valve temp. sensor error •
3-way valve temp. sensor error •
(7) (7)
Heat sink temp. sensor error
(8) (2)
Sub-cool Heat Ex. gas inlet •
temp. sensor error
Sub-cool Heat Ex. gas outlet •
temp. sensor error
(8) (3)
Liquid pipe temp. sensor error
(8) (4)
Current sensor error
(8) (6)
Discharge pressure sensor error •
Suction pressure sensor error •
High pressure switch error •
(9) (4)
Trip detection
(9) (5)
Compressor rotor position
detection error (permanent stop)
(9) (7)
Outdoor unit fan motor error
(9) (9)
4-way valve error
(10) (1)
Discharge temp. error
(10) (3)
Compressor temp. error
(10) (4)
High pressure error
(10) (5)
Low pressure error
(13) (2)
Branch boxes error
[Flexible Multi]
Troubleshooting
with an indoor unit display
OPERATION green
TIMER
orange
ECONOMY
green