Fujitsu AOT9LSAC User Manual (English)

Questions and Answers:

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Nicholas DaltonAug 12, 2025
What to do if my Fujitsu AOT9LSAC has poor cooling performance?
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  Andrew MartinezAug 12, 2025
  If your Fujitsu Air Conditioner isn't cooling well, several factors could be the cause. First, check if the air filter is dirty and clean it if necessary. Make sure that the air conditioner's intake grille or outlet port isn't blocked. Ensure that you've correctly adjusted the thermostat settings. Also, check for open windows or doors, and close them. If it's during cooling operation and sunlight is entering the room, close the curtains. Consider if there are heat-generating appliances or too many people in the room. Finally, check if the unit is set to SUPER QUIET operation, as this can reduce cooling performance.
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kphelpsAug 16, 2025
What to do if my Fujitsu AOT9LSAC doesn't operate at all?
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  taylordavidAug 16, 2025
  If your Fujitsu Air Conditioner isn't operating, start by checking if the power supply plug is properly connected to the outlet. Also, verify whether there has been a power failure. Finally, check if a fuse has blown out or a circuit breaker has been tripped.
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Sean ReedAug 23, 2025
Why is water produced from the outdoor unit of my Fujitsu Air Conditioner?
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  Melissa SchroederAug 25, 2025
  During heating operation, water may be produced from the outdoor unit of your Fujitsu Air Conditioner due to the automatic defrosting operation.
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Vanessa FergusonAug 27, 2025
Why does my Fujitsu AOT9LSAC smell?
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  robinsonsusanAug 27, 2025
  A smell may be emitted from your Fujitsu Air Conditioner's indoor unit because room odors (from furniture, tobacco, etc.) have been drawn into the unit.
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janetholtAug 31, 2025
Why does my Fujitsu AOT9LSAC Air Conditioner not operate immediately?
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  Richard MillerAug 31, 2025
  If your Fujitsu Air Conditioner is stopped and then immediately started again, the compressor will not operate for about 3 minutes to prevent fuse blowouts. Also, whenever the Power Supply Plug is disconnected and then re-connected to a power outlet, the protection circuit will operate for about 3 minutes, preventing unit operation during that period.
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Devon EatonSep 3, 2025
Why does my Fujitsu AOT9LSAC emit mist or steam?
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  jermainejonesSep 3, 2025
  During cooling or dry operation, a thin mist may be seen emitted from the indoor unit of your Fujitsu Air Conditioner. This results from the sudden cooling of room air by the air emitted from the air conditioner, leading to condensation and misting. During heating operation, the outdoor unit’s fan may stop, and steam may be seen rising from the unit due to automatic defrosting operation.
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bgibsonSep 7, 2025
Why does my Fujitsu AOT9LSAC Air Conditioner make noise?
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  Cody JohnsonSep 7, 2025
  During operation and immediately after stopping the unit, the sound of water flowing in the air conditioner’s piping may be heard. Also, noise may be particularly noticeable for about 2 to 3 minutes after starting operation (sound of coolant flowing). During Heating operation, a sizzling sound may be heard occasionally which is produced by the Automatic Defrosting operation.
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Kim Foster MDSep 10, 2025
Why does my Fujitsu AOT9LSAC Air Conditioner airflow become weak or stop?
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  Jessica SosaSep 12, 2025
  There are several reasons why the airflow in your Fujitsu Air Conditioner might weaken or stop. When heating operation is started, fan speed is temporarily very low, to allow internal parts to warm up. During heating operation, if the room temperature rises above the thermostat setting, the outdoor unit will stop, and the indoor unit will operate at very low fan speed. During heating operation, the unit will temporarily stop operation (between 7 and 15 minutes) as the Automatic Defrosting mode operates. The fan may operate at very low speed during Dry operation or when the unit is monitoring the room’s temperature. During SUPER QUIET operation, the fan will operate at very low speed. Also, in the monitor AUTO operation, the fan will operate at very low speed.

Fujitsu AOT9LSAC Specifications

General

Type	Split System
Cooling Capacity	2.5 kW
Cooling Capacity (BTU)	8530 BTU/h
Heating Capacity	3.2 kW
Refrigerant	R410A
Voltage	220-240 V
Weight (Indoor Unit)	8 kg
Power Supply	220-240V, 50Hz