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Fujitsu Slim Duct Type Installation Manual: Error Codes

Air conditioner outdoor unit.
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13. ERROR CODES

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.
Error display
OPERATION
TIMER
ECONOMY
lamp
lamp
lamp
(green)
(orange)
(green)
(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,
Wired
remote
Mode
controller
Error code
Communication
Serial communication error
Remote controller
Communication
communication error
Communication
Scan error
Function setting
Initial setting error
Function setting
Indoor unit capacity error
Function setting
Connection disabled (series error)
Function setting
Connection unit number error
Indoor unit
Indoor unit main PCB error
Indoor unit
Manual auto switch error
Indoor unit
Room error
Indoor unit
Indoor unit Heat Ex. sensor error
Indoor unit
Indoor unit fan motor error
Indoor unit
Water Drain error
Indoor unit
Indoor unit error
Outdoor unit
Outdoor unit main PCB error
Outdoor unit
Inverter PCB error
Active filter error,
Outdoor unit
PFC circuit error
Outdoor unit
IPM error
Outdoor unit
Display panel error
Outdoor unit
Discharge thermistor error
Outdoor unit
Compressor thermistor error
Outdoor unit Heat Ex.
Outdoor unit
Sensor error
Outdoor unit
Outdoor thermistor error
Outdoor unit
Suction Gas thermistor error
Outdoor unit
Heat sink thermistor error
Sub-cool Heat Ex. gas
Outdoor unit
thermistor error
Outdoor unit
Liquid pipe thermistor error
Outdoor unit
Current sensor error
Outdoor unit
Pressure sensor error
Outdoor unit
Trip detection
Outdoor unit
compressor motor control error
Outdoor unit
Outdoor unit fan motor 1 error
Outdoor unit
4-way valve error
Refrigerant system Discharge temperature 1 error
Refrigerant system Compressor temperature error
Refrigerant system Pressure error 2
Branch box
Unit flow divider error
DESCRIPTION
• When the indoor unit cannot receive the signal from the branch unit
• When the branch unit cannot receive the signal from the indoor unit
•Wired remote controller communication error
•Check operation incompletion error (normally, operation disabled)
•Wiring mistake
•Indoor unit capacity error
•Combination error
•Connection unit number error (indoor unit)
•Connection unit number error (branch unit)
•Indoor unit PCB Model information error
•Manual auto switch error
•Inlet thermistor error
•Indoor unit Heat Ex. Middle thermistor error
•Main fan motor lock error
•Main fan motor revolution speed error
•Drain pump error
•Indoor unit error
•Outdoor unit PCB Model information error
•Outdoor unit PCB microcomputer communication error
•Inverter error
•Voltage error stoppage permanently
•Voltage error (can restore)
•Over current protected operation stoppage permanently
•PFC hardware error
•Trip terminal L error
•Microcomputers communication error
•Discharge thermistor 1 error
•Compressor thermistor 1 error
•Outdoor unit Heat Ex. liquid thermistor error
•Outdoor thermistor error
•Suction Gas thermistor error
•Heat sink thermistor error
•Sub-cool Heat Ex. gas inlet thermistor error
•Sub-cool Heat Ex. gas outlet thermistor error
•Liquid pipe thermistor 1 error
•Current sensor 1 error (stoppage permanently)
•Discharge pressure sensor error
•Suction pressure sensor error
•High pressure switch 1 error
•Trip detection
•Rotor position detection error (stoppage permanently)
•Duty error
•4-way valve error
•Discharge temperature 1 error
•Compressor 1 temperature error
•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
•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
Remark
En-25

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