Error Detection - Fujitsu ARU18RLF Service Manual

ER R OR D ETEC TION
If you use a wired type remote control,
error codes will appear on the remote control display.
If you use a wireless remote control,
the lamps on the IR receiver unit will output error codes
by way of blinking patterns.
See the lamp blinking patterns and error codes in the table below.
An error display is displayed only during operation.
Indoor unit lamps
OPERATION TIMER
(green) (orange)
(1) (1)
(1) (2)
(1) (5)
(2) (1)
(2) (2)
(2) (3)
(2) (4)
(3) (2)
(3) (5)
(4) (1)
(4) (2)
(5) (1)
(5) (3)
(5) (15)
(6) (2)
(6) (3)
(6) (4)
(6) (5)
(6) (10)
(7) (1)
(7) (2)
(7) (3)
(7) (4)
(7) (5)
(7) (7)
(8) (2)
(8) (3)
(8) (4)
(8) (6)
(9) (4)
(9) (5)
(9) (7)
(9) (9)
(10) (1)
(10) (3)
(10) (5)
(13) (2)
•Display mode : 0.5s ON / 0.5s OFF, ( ) : Number of flashing,
2013.04.25
Wired
remote
Mode
ECONOMY
control
(green)
Communication
Communication Remote control
Communication Scan error
Function setting Initial setting error
Function setting Indoor unit capacity error
Function setting
Function setting
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Refrigerant system Discharge temperature 1 error •Discharge temperature 1 error
Refrigerant system Compressor temperature error •Compressor 1 temperature error
Refrigerant system
Branch box
Description
• When the indoor unit cannot receive the signal from the branch unit
Serial communication error
• When the branch unit cannot receive the signal from the indoor unit
•Wired remote control communication error
communication error
•Check operation incompletion error (normally, operation disabled)
•Wiring mistake
•Indoor unit capacity error
•Combination error
Connection disabled (series error)
•Connection unit number error (indoor unit)
Connection unit number error
•Connection unit number error (branch unit)
Indoor unit main PCB error •Indoor unit PCB Model information error
Manual auto switch error
•Manual auto switch error
Room error
•Inlet thermistor error
•Indoor unit Heat Ex. Middle thermistor error
Indoor unit Heat Ex. sensor error
•Main fan motor lock error
Indoor unit fan motor error
•Main fan motor revolution speed error
W ater Drain error
•Drain pump error
Indoor unit error •Indoor unit error
•Outdoor unit PCB Model information error
Outdoor unit main PCB error
•Outdoor unit PCB microcomputer communication error
Inverter PCB error
•Inverter error
•Voltage error stoppage permanently
Active filter error,
•Voltage error (can restore)
•Over current protected operation stoppage permanently
PFC circuit error
•PFC hardware error
IPM error
•Trip terminal L error
Display panel error •Microcomputers communication error
Discharge thermistor error
•Discharge thermistor 1 error
Compressor thermistor error
•Compressor thermistor 1 error
Outdoor unit Heat Ex.
•Outdoor unit Heat Ex. liquid thermistor error
Sensor error
Outdoor thermistor error
•Outdoor thermistor error
Suction Gas thermistor error
•Suction Gas thermistor error
Heat sink thermistor error •Heat sink thermistor error
Sub-cool Heat Ex. gas
•Sub-cool Heat Ex. gas inlet thermistor error
thermistor error •Sub-cool Heat Ex. gas outlet thermistor error
Liquid pipe thermistor error
•Liquid pipe thermistor 1 error
Current sensor error
•Current sensor 1 error (stoppage permanently)
•Discharge pressure sensor error
Pressure sensor error •Suction pressure sensor error
•High pressure switch 1 error
Trip detection
•Trip detection
Compressor motor control error •Rotor position detection error (stoppage permanently)
Outdoor unit fan motor 1 error •Duty error
4-way valve error
•4-way valve error
Pressure error 2 •Low pressure error
•EEPROM access error
•Equipment type information error
•Serial communication error to outdoor unit
•Branch units serial communication error
•Serial communication error to indoor unit
Unit flow divider error
•Liquid pipe thermistor error
•Gas pipe thermistor error
•Expansion valve full closure operation error
•Remote control communication error
•Branch unit error
: 0.1s ON / 0.1s OFF
14
Error code
Wired remote control
Remark