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Fujitsu AGU15RLF - Service Manual

Fujitsu AGU15RLF
100 pages
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SPLIT TYPE
ROOM AIR CONDITIONER
Models Indoor unit Outdoor unit
AOU36RLXFZH
AOU45RLXFZ
INVERTER MULTI
SERVICE
INSTRUCTION
R410A
Compact Wall Mounted
Wall Mounted / Floor
Compact Cassette / Slim Duct
ARU7RLF
ARU9RLF
ARU12RLF
ARU18RLF
ARU24RLF
AUU7RLF
AUU9RLF
AUU12RLF
AUU18RLF
ASU18RLF
ASU7RLF1
ASU9RLF1
ASU12RLF1
AGU9RLF
AGU12RLF
AGU15RLF
ASU24RLF

Table of Contents

Other manuals for Fujitsu AGU15RLF

Questions and Answers

  • R
    Robert HuertaAug 12, 2025
    What to do if my Fujitsu AGU15RLF remote is not working due to a communication error?
    • S
      Sheila JonesAug 12, 2025
      If you're experiencing a Wired Remote Controller Communication Error with your Fujitsu Air Conditioner, check the voltage. If it's DC12V, the remote control has failed and should be replaced. If it's DC 0V, the Controller PCB has failed and should be replaced after rechecking the remote control.
  • C
    Charles GrayAug 15, 2025
    What to do if my Fujitsu Air Conditioner has a drainage error?
    • D
      David TaylorAug 15, 2025
      If your Fujitsu Air Conditioner is experiencing drainage issues, start by inspecting the float switch for proper operation using a meter to check its on/off switching. If the float switch is defective, replace it. Also, examine the drain hose for any clogs and clear them if necessary. If these steps don't resolve the issue, consider replacing the controller PCB.
  • M
    Monica GrayAug 19, 2025
    How to fix a Fujitsu AGU15RLF Air Conditioner indoor unit fan motor error?
    • J
      John MoodyAug 19, 2025
      If you're encountering an indoor unit fan motor error with your Fujitsu Air Conditioner, check first the fan and bearing. If either is damaged, replace them. If the motor itself is faulty, replace the indoor unit fan motor. If these steps do not resolve the issue, replace the controller PCB.
  • C
    Christina WolfAug 23, 2025
    What to do if my Fujitsu AGU15RLF Air Conditioner shows an indoor room thermistor error?
    • N
      Nichole ElliottAug 25, 2025
      If your Fujitsu Air Conditioner displays an indoor room thermistor error, begin by checking the connector to ensure it is securely attached and properly connected, and verify that the thermistor cable is not open. If the thermistor is either open or shorted, replace it and then reset the power.
  • J
    Jeremy LuceroAug 27, 2025
    How to troubleshoot an Indoor Unit Model Information Error on my Fujitsu AGU15RLF Air Conditioner?
    • P
      patriciahernandezAug 27, 2025
      If your Fujitsu Air Conditioner is showing an Indoor Unit Model Information Error, check for external causes such as noise and ensure the ground connection is properly connected. Also, inspect all connectors for looseness or incorrect wiring, and check the PCB for any shorts or corrosion. If the problem persists, consider replacing the Controller PCB.
  • K
    Kenneth SchultzAug 30, 2025
    What does an Indoor Unit Capacity Error mean on my Fujitsu Air Conditioner?
    • T
      Thomas LoveAug 31, 2025
      If your Fujitsu Air Conditioner is showing an Indoor Unit Capacity Error, first verify the total capacity of the connected indoor units. If an abnormal condition is found, correct it by referring to the Installation Manual or Design & Technical Manual. If the problem persists, replace the Main PCB of the Outdoor unit.
  • K
    Kevin WilliamsSep 3, 2025
    How to fix a Serial Communication Error (Serial Reverse Transfer Error) on a Fujitsu AGU15RLF?
    • B
      Brandy BlackburnSep 3, 2025
      If your Fujitsu Air Conditioner displays a Serial Communication Error (Serial Reverse Transfer Error), check all connection lines between the indoor and outdoor units for any looseness or disconnections, referring to the Installation Manual or Data & Technical Manual for correction. Also, check the voltage of the power supply, ensuring it appears at the outdoor unit terminal L1 - L2 within the range of AC187V - 253V. Check that the indicated value swings between AC90V and AC270V at outdoor unit terminal 1 - 3. If the outdoor fan motor, active filter module, or IPM is abnormal, replace the corresponding part. If all parts are normal, replace the Main PCB.
  • A
    Andrew TaylorSep 7, 2025
    How to resolve a Damper (Open/Close) simultaneous detection Limit switch error on a Fujitsu AGU15RLF Air Conditioner?
    • N
      nicholassmithSep 7, 2025
      If your Fujitsu Air Conditioner displays a Damper(Open/Close) simultaneous detection Limit switch error, replace the limit switch if it is defective. If the problem persists, replace the Controller PCB.

Summary

DESCRIPTION OF EACH CONTROL OPERATION

CONTROL OPERATION OVERVIEW

Details on Capacity Control and Auto Changeover Operation modes.

INDOOR FAN AND AIRFLOW CONTROL

Indoor fan speed settings, Fan Operation, Cooling, Dry, Heating, and Cool Air Prevention.

LOUVER AND DAMPER CONTROL

Controls for Louver direction, swing, and Air Outlet Selection (Damper).

COMPRESSOR AND OUTDOOR FAN CONTROL

Outdoor Fan Speed, Compressor frequency range, and start-up control.

TIMER AND SPECIAL OPERATIONS

Timer operations, Preheating, Powerful, Economy, and Minimum Heat modes.

THERMAL AND AUXILIARY CONTROLS

Thermo Control, Base Heater, Fresh Air, External Heater, Heat Insulation settings.

DRAIN PUMP OPERATION

Details drain pump operation during Cooling/Dry and Heating/Fan/Stop modes.

DEFROST OPERATION CONTROL

Conditions for starting, integrating, and completing defrost operations.

CHECK RUN AND TEST OPERATIONS

Procedure for Check Run (wiring correction) and Test Run on outdoor unit.

PROTECTIONS AND PUMP DOWN

Details various protections and the Pump Down operation procedure.

TROUBLE SHOOTING

ERROR CODE DISPLAY AND DIAGNOSIS

Lists error codes, unit displays, self-diagnosis, and error history procedures.

COMMUNICATION AND UNIT ERRORS

Troubleshooting for Serial, Wired Remote, and Controller/Outdoor unit communication errors.

SENSOR AND MOTOR ERRORS

Troubleshooting for Thermistor, Fan Motor, Damper, and Intake Grille errors.

ELECTRONIC COMPONENT ERRORS

Troubleshooting for Inverter, IPM, Active Filter, and EEPROM related errors.

COMPRESSOR AND VALVE RELATED ERRORS

Troubleshooting for Discharge Temp, Compressor Temp, 2/3-Way Valve, and CT errors.

SYSTEM AND OPERATION ERRORS

Troubleshooting for 4-Way Valve, Coil (EEV), Discharge Temp, Compressor Temp, and system errors.

NO POWER AND NO OPERATION TROUBLESHOOTING

Steps for diagnosing No Power and No Operation issues in indoor and outdoor units.

PERFORMANCE AND NOISE ISSUES

Troubleshooting for No Cooling/Heating, Abnormal Noise, and Water Leaking.

TEMPERATURE CONTROL ISSUES

Troubleshooting steps for "Too Warm" and "Too Cool" conditions.

SERVICE PARTS INFORMATION

Guides for checking and replacing key service parts like Compressor, EEV, and PCBs.

Fujitsu AGU15RLF Specifications

General IconGeneral
BrandFujitsu
ModelAGU15RLF
CategoryAir Conditioner
LanguageEnglish

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