Fujitsu Halcyon ASU9RQ User Manual

Fujitsu Halcyon ASU9RQ

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ASU9RQ

ASU12RQ

AOU9RQ

AOU12RQ

Table of Contents

Questions and Answers:

T
tylerrichardsonAug 17, 2025
Why is my Fujitsu Halcyon ASU9RQ cooling or heating poorly?
- D
  Donald McdonaldAug 17, 2025
  Poor cooling or heating performance in your Fujitsu Air Conditioner can stem from several factors: a dirty air filter, blocked intake grille or outlet port, incorrect room temperature settings, open windows or doors, bright sunlight entering during cooling (close the curtains), presence of heating apparatus, computers, or too many people in the room during cooling, or the unit being set to SUPER QUIET operation. Check these aspects to improve performance.
D
David TaylorAug 19, 2025
Why does my Fujitsu Halcyon ASU9RQ Air Conditioner operate differently from the Remote Control Unit’s setting?
- B
  Brooke ManningAug 20, 2025
  The fact that your Fujitsu unit operates differently from the Remote Control Unit’s setting may be caused by dead batteries or batteries that are not loaded properly in the Remote Control Unit. Please, check the batteries.
J
jeffrey31Aug 22, 2025
Why is water produced from the outdoor unit of my Fujitsu Air Conditioner?
- M
  Mary BraunAug 22, 2025
  During Heating operation of your Fujitsu Air Conditioner, water may be produced from the outdoor unit due to Automatic Defrosting operation.
A
Anthony HallAug 26, 2025
What to do if my Fujitsu Air Conditioner doesn’t operate at all?
- M
  Mario WellsAug 26, 2025
  If your Fujitsu Air Conditioner doesn't operate at all, check the following: Ensure the power supply plug is properly connected to the outlet. Verify there hasn't been a power failure. Check if a fuse has blown or a circuit breaker has been tripped. Also, confirm whether the timer is operating.
D
Dr. Gerald Walls IIAug 27, 2025
Why is the airflow weak or stopping in my Fujitsu Halcyon ASU9RQ?
- L
  Lisa BallAug 27, 2025
  Weak airflow or a complete stop in your Fujitsu Air Conditioner can occur for several reasons. When heating starts, the fan speed is temporarily very low to allow internal parts to warm up. Also, if the room temperature rises above the thermostat setting during heating, the outdoor unit will stop, and the indoor unit will operate at a very low fan speed. During heating, the unit may temporarily stop (between 7 and 15 minutes) for automatic defrosting. The fan may also operate at a very low speed during dry operation, when the unit is monitoring the room’s temperature, during SUPER QUIET operation, or in monitor AUTO operation.
L
Lee VincentAug 30, 2025
Why is mist or steam emitted from my Fujitsu Air Conditioner?
- D
  Derek Baldwin DDSAug 30, 2025
  The mist or steam emitted from the Fujitsu Air Conditioner can be due to a couple of reasons. During cooling or dry operation, a thin mist may be seen due to the sudden cooling of room air, resulting in condensation. During heating, steam may rise from the outdoor unit, and the fan may stop due to automatic defrosting operation.
T
Terry WiseSep 2, 2025
Why is there noise coming from my Fujitsu Halcyon ASU9RQ Air Conditioner?
- D
  Dorothy WhiteSep 2, 2025
  The sound of water flowing in the Fujitsu Air Conditioner's piping may be heard during operation and immediately after stopping the unit. A slight squeaking sound may occur due to minute expansion and contraction of the front cover caused by temperature changes. During heating, a sizzling sound may be heard occasionally, produced by the automatic defrosting operation.
B
Brendan StoneSep 4, 2025
What to do if the AIR CLEAN indicator lamp (green) is flashing quickly on my Fujitsu Halcyon ASU9RQ Air Conditioner?
- J
  Jennifer HallSep 5, 2025
  The AIR CLEAN indicator lamp flashing quickly on your Fujitsu Air Conditioner means that after approximately 500 hours of Air Cleaning Mode use, Air Cleaning will stop functioning. Please stop the system, remove the mains socket and carry out maintenance on the dust collecting unit's air filter.
D
Douglas HerreraSep 7, 2025
What to do if the AIR CLEAN indicator lamp (green) is flashing slowly on my Fujitsu Air Conditioner?
- D
  Dillon SmithSep 7, 2025
  The AIR CLEAN indicator lamp flashing slowly on your Fujitsu Air Conditioner means that after approximately 400 hours of Air Cleaning Mode use, the AIR CLEAN indicator lamp will begin to flash slowly. When this occurs, please stop the system, remove the mains socket and carry out maintenance on the dust collecting unit's air filter.
E
Elizabeth RitterSep 10, 2025
Why does my Fujitsu Halcyon ASU9RQ Air Conditioner smells?

Fujitsu Halcyon ASU9RQ Specifications

General

Brand	Fujitsu
Model	Halcyon ASU9RQ
Category	Air Conditioner
Language	English

Summary

Unit and Remote Control Components

Indoor Unit Components

Details of the indoor unit parts and indicators.

Remote Control Unit Details

Describes remote control buttons, display elements, and test run function.

Preparation and Setup

Initial Power and Battery Setup

Instructions for powering on and installing remote batteries.

Operating the Air Conditioner

Mode, Thermostat, and Fan Speed Settings

How to select modes, set temperature, and adjust fan speed.

Air Cleaning Operation

Using Air Cleaning Mode

How to activate and use the air cleaning function.

Timer Operations

ON/OFF Timer Usage

Setting the timer to turn the unit on or off.

Program Timer Usage

Creating a sequence of ON/OFF timer operations.

Sleep Timer Operation

Using the Sleep Timer

Setting the timer for automatic shutdown with temperature adjustments.

Adjusting Air Circulation Direction

Vertical Air Direction Adjustment

Adjusting the up-down airflow direction using the SET button.

Horizontal Air Direction Adjustment

Plasma Air Cleaning Filter Maintenance

Air Cleaning Check Function

Cleaning the Dust Collection Unit

Air-cleaning and Deodorizing Filter Handling

Filter Installation and Removal

Troubleshooting Common Issues

Operation Start-up, Noise, and Smell Problems

Airflow, Mist/Steam, and Air Cleaning Indicators

Troubleshooting and Operating Guidance

Pre-Service Checks and Performance Issues

Essential checks before service and common performance problems.

Heating, Defrosting, and Auto Restart

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