Fujitsu AOYS09LDC User Manual (English)

Other manuals for Fujitsu AOYS09LDC

Service Manual140 pages

Installation Manual2 pages

Questions and Answers:

U
uschwartzAug 20, 2025
Why my Fujitsu Air Conditioner does not operate at all?
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  Amanda StephensAug 21, 2025
  If your Fujitsu Air Conditioner isn't operating, and the Operation Lamp and Timer Lamp aren't lit, you should check a few things: * Ensure the input power voltage from the exclusive circuit AC outlet is normal. * Make sure the AC plug is securely inserted into the AC outlet and isn't loose. * Verify that any connected cables are wired correctly. * Confirm that each connector is securely inserted.
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Alexandra RobinsonAug 22, 2025
What to do if my Fujitsu AOYS09LDC shows excessive high pressure protection on cooling?
- K
  kyle88Aug 22, 2025
  If your Fujitsu Air Conditioner is showing an excessive high pressure protection error during cooling, check the following: * Ensure that heat radiation is not blocked at the inlet or outlet. * Verify that the outdoor fan is functioning correctly and rotating. * Check for any issues with the refrigeration cycle.
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lopezcarolineAug 25, 2025
What causes IPM protection in my Fujitsu AOYS09LDC?
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  Lisa HatfieldAug 25, 2025
  If your Fujitsu Air Conditioner is showing IPM protection, it indicates that an abnormal current value has been detected. Here's what you should check: * Ensure that heat radiation is not blocked at the inlet or outlet. * Verify that the outdoor fan is functioning correctly and rotating. * The controller PCB might be defective.
E
emily19Aug 26, 2025
What to do if my Fujitsu AOYS09LDC has indoor fan lock error?
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  John BrownAug 27, 2025
  If your Fujitsu Air Conditioner displays an indoor fan lock error, it means the indoor fan speed is 0 rpm after 56 seconds from starting or changing the fan mode. Here’s what to check: * Check the fan motor connector for looseness or defective contact. * The fan motor might be defective. * The controller PCB might be defective.
K
Kevin MartinAug 27, 2025
What to do if my Fujitsu AOYS09LDC Air Conditioner has indoor fan speed error?
- B
  bcarsonAug 28, 2025
  If your Fujitsu Air Conditioner displays an indoor fan speed error, it means the indoor fan speed is 1/3 of the target frequency after 56 seconds from starting or changing the fan mode. Here’s what to check: * Check the fan motor connector for looseness or defective contact. * The fan motor might be defective. * The controller PCB might be defective.
T
Trevor WalkerAug 29, 2025
What causes a room temperature thermistor defective in Fujitsu Air Conditioner?
- J
  Jeffery SanchezAug 29, 2025
  If your Fujitsu Air Conditioner shows a room temperature thermistor defect, it means the thermistor detected an abnormal temperature when the power was turned on. Check the thermistor resistance value. The controller PCB might be defective.
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Russell CurtisAug 31, 2025
What does main relay error mean on Fujitsu Air Conditioner?
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  michaelreyesAug 31, 2025
  If your Fujitsu Air Conditioner displays a main relay error, it means that after 2 minutes 20 seconds of stopping operation, the signal from the outdoor unit is received even though the main relay is OFF. The main relay might be defective or the Controller PCB might be defective.
J
Jackie FrankSep 2, 2025
Why Fujitsu AOYS09LDC Air Conditioner shows serial reverse transfer error at starting up operation?
- J
  Jessica DownsSep 2, 2025
  If your Fujitsu Air Conditioner displays a serial reverse transfer error at startup, it means the indoor unit isn't receiving a signal for 10 seconds after the power relay turns on. Check the indoor/outdoor cable connection. If the wiring is normal, measure the voltage of the outdoor unit terminals and diagnose the defective location.
H
huntersmithSep 3, 2025
What does serial reverse transfer error during the operation mean for Fujitsu Air Conditioner?
- D
  David CardenasSep 3, 2025
  If your Fujitsu Air Conditioner displays a serial reverse transfer error during operation, it means the indoor unit isn't receiving a signal for 10 seconds. Check the indoor/outdoor cable connection. If the wiring is normal, measure the voltage of the outdoor unit terminals and diagnose the defective location.
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Alexandra MurraySep 5, 2025
Why Fujitsu AOYS09LDC shows serial forward transfer error at starting up operation?
- D
  Denise MeyerSep 5, 2025
  If your Fujitsu Air Conditioner displays a serial forward transfer error at startup, it means the outdoor unit isn't receiving a signal for 10 seconds after the power relay turns on. Check the indoor/outdoor cable connection. If the wiring is normal, measure the voltage of the outdoor unit terminals and diagnose the defective location.