Fujitsu Inverter Halcyon ASU24RLQ User Manual

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KEEP THIS OPERATION MANUAL

FOR FUTURE REFERENCE

FUJITSU GENERAL LIMITED

P/N9315345073-01

OPERATING MANUAL

MODE D’EMPLOI

MANUAL DE FUNCIONAMIENTO

English

Français

Español

Indoor Unit

ASU24RLQ

Outdoor Unit

AOU24RLQ

HEAT&COOLING MODEL

(REVERSE CYCLE)

ROOM AIR CONDITIONER

WALL MOUNTED TYPE

Questions and Answers:

A
Antonio NolanAug 16, 2025
How to improve poor cooling performance of my Fujitsu Inverter Halcyon ASU24RLQ Air Conditioner?
- W
  William ThomasAug 16, 2025
  Several factors can affect the cooling performance of your Fujitsu Air Conditioner. Check these: * Ensure the air filter is clean. * Make sure the intake grille or outlet port aren't blocked. * Verify the thermostat is set correctly. * Close any open windows or doors. * Close curtains to block direct sunlight during cooling operation. * Reduce heat sources like computers or heating apparatus. Also, consider if there are too many people in the room. * Check if the unit is set to SUPER QUIET operation, as this mode reduces cooling power.
P
Paul GrayAug 19, 2025
What to do if my Fujitsu Inverter Halcyon ASU24RLQ Air Conditioner doesn’t operate at all?
- G
  Gary EvansAug 19, 2025
  If your Fujitsu Air Conditioner isn't operating, check the following: * Ensure the power supply plug is properly connected to the outlet. * Check if there has been a power failure. * See if a fuse has blown or a circuit breaker has tripped. * Verify that the timer is not in operation.
J
jameswheelerAug 22, 2025
Why is water produced from the outdoor unit of my Fujitsu Inverter Halcyon ASU24RLQ?
- R
  Randall TerryAug 22, 2025
  During heating operation, water may be produced from the outdoor unit of your Fujitsu Air Conditioner due to the automatic defrosting operation.
M
Matthew DixonAug 26, 2025
Why does my Fujitsu Inverter Halcyon ASU24RLQ airflow become weak or stop?
- L
  Larry ChapmanAug 26, 2025
  There are several reasons why the airflow of your Fujitsu Air Conditioner might weaken or stop: * When heating starts, the fan speed is temporarily low to allow internal parts to warm up. * During heating, if the room temperature exceeds the thermostat setting, the outdoor unit will stop, and the indoor unit will operate at a very low fan speed. Set the thermostat higher if you want the room warmer. * The unit will temporarily stop during heating (for 7-15 minutes) for automatic defrosting. * The fan may operate at a very low speed during dry operation or when monitoring the room's temperature. * In SUPER QUIET operation, the fan runs at a very low speed. * In monitor AUTO operation, the fan runs at a very low speed.
J
julia34Aug 28, 2025
Why Fujitsu Air Conditioner doesn’t operate immediately?
- M
  Michael SchwartzAug 28, 2025
  Your Fujitsu Air Conditioner may not start immediately under these conditions: * If the unit was recently stopped and restarted, the compressor might not operate for about 3 minutes to prevent fuse issues. * If the power supply plug was recently disconnected and reconnected, the protection circuit will prevent operation for about 3 minutes.
K
Kimberly RodgersAug 31, 2025
What does it mean if the AIR CLEAN Indicator Lamp (orange) on my Fujitsu Air Conditioner begins to flash quickly?
- J
  Jo NelsonAug 31, 2025
  If the AIR CLEAN Indicator Lamp on your Fujitsu Air Conditioner flashes quickly, it means that the Air Cleaning function has stopped working because the unit has been used for approximately 500 hours in Air Cleaning Mode. To resolve this, stop the system, remove the mains socket, and perform maintenance on the dust collecting unit's air filter.
A
Alexis CharlesSep 3, 2025
Why does my Fujitsu Air Conditioner smell?
- D
  David PerezSep 3, 2025
  The smell emitted from your Fujitsu Air Conditioner's indoor unit may be due to room odors (from furniture, tobacco, etc.) that have been drawn into the unit.
H
Hector LittleSep 6, 2025
What does it mean if the AIR CLEAN Indicator Lamp (orange) on my Fujitsu Inverter Halcyon ASU24RLQ Air Conditioner begins to flash slowly?
- E
  Emily AlvarezSep 6, 2025
  If the AIR CLEAN Indicator Lamp on your Fujitsu Air Conditioner flashes slowly, it indicates that the unit has been used for approximately 400 hours in Air Cleaning Mode. You should stop the system, remove the mains socket, and carry out maintenance on the dust collecting unit's air filter.
C
Chelsea TerrySep 9, 2025
Why does my Fujitsu Air Conditioner make noise?
- M
  mccarthyjeremySep 9, 2025
  Your Fujitsu Air Conditioner may produce noise for several reasons: * You might hear water flowing in the pipes during or immediately after operation. * The sound of coolant flowing may be noticeable for 2-3 minutes after starting. * A sizzling sound may occur during heating, which is normal during automatic defrosting.

Fujitsu Inverter Halcyon ASU24RLQ Specifications

General

Refrigerant	R-410A
Cooling Capacity	24, 000 BTU/h
SEER	16
Heating Capacity	27000 BTU/h
Power Supply	208/230V, 1 Phase, 60 Hz
Outdoor Unit Weight	121 lbs

Summary

Safety Precautions

Features and Functions

Preparation

Operation

Selecting Mode Operation

Guide on selecting operating modes like AUTO, COOL, DRY, HEAT, FAN.

Setting the Thermostat

Instructions for adjusting the desired temperature setting.

Setting the Fan Speed

Guide on selecting fan speed levels (AUTO, HIGH, MED, LOW, QUIET).

Air Cleaning Operation

Timer Operation

Using ON/OFF Timers

Instructions for setting single ON or OFF timers for the air conditioner.

Sleep Timer Operation

Using the Sleep Timer

How to set the sleep timer for gradual temperature adjustment and auto-off.

Adjusting Air Circulation Direction

Cleaning and Care

Cleaning the Plasma Air Cleaning Filter

Troubleshooting

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