Fujitsu AOT30LMADL - User Manual

Questions and Answers

R
Robin JohnsonAug 14, 2025
Why is my Fujitsu AOT30LMADL cooling (or heating) poorly?
- T
  tina14Aug 14, 2025
  Poor cooling or heating performance in your Fujitsu Air Conditioner can be due to several reasons: * A dirty air filter. * Blocked intake grille or outlet port. * Incorrect room temperature settings. * Open window or door. * Bright sunlight entering the window during Cooling operation (close the curtains). * Too many people or heating apparatus and computers inside the room during Cooling operation.
A
Anthony WrightAug 17, 2025
What to do if my Fujitsu AOT30LMADL Air Conditioner doesn’t operate at all?
- L
  Lee HamiltonAug 17, 2025
  If your Fujitsu Air Conditioner doesn’t operate at all, check the following: * Has there been a power failure? * Has a fuse blown out, or a circuit breaker been tripped? * Is the timer operating?
D
David RodriguezAug 25, 2025
What to do if my Fujitsu AOT30LMADL operates differently from the remote control unit’s setting?
- R
  Robert SuarezAug 25, 2025
  If your Fujitsu Air Conditioner operates differently from the remote control unit’s setting, check if: * The remote control unit’s batteries are dead. * The remote control unit’s batteries are loaded properly.
W
William BakerAug 27, 2025
Why is water produced from the outdoor unit of my Fujitsu AOT30LMADL Air Conditioner?
- D
  Douglas ScottAug 27, 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 AdamsAug 30, 2025
Why is there noise coming from my Fujitsu AOT30LMADL Air Conditioner?
- N
  Nancy MezaAug 30, 2025
  The noises you hear from your Fujitsu Air Conditioner could be due to: * The sound of water flowing in the air conditioner’s piping during operation and immediately after stopping the unit. * The sound of coolant flowing, which may be particularly noticeable for about 2 to 3 minutes after starting operation. * A sizzling sound during Heating operation, which is produced by the Automatic Defrosting operation.
J
Jeremy WilsonSep 3, 2025
Why is my Fujitsu Air Conditioner emitting mist or steam?
- T
  Timothy DavisSep 3, 2025
  The emission of mist or steam from your Fujitsu Air Conditioner can be caused by: * During Cooling or Dry operation, a thin mist may be seen emitted from the indoor unit. This results from the sudden Cooling of room air by the air emitted from the air conditioner, resulting in condensation and misting. * During Heating operation, the outdoor unit’s fan may stop, and steam may be seen rising from the unit. This is due to the Automatic Defrosting operation.
D
Daniel PowellSep 6, 2025
Why Fujitsu AOT30LMADL doesn't operate immediately after turning it on?
- R
  Randy HoltSep 6, 2025
  Your Fujitsu Air Conditioner might not operate immediately because: * If the unit is stopped and then immediately started again, the compressor will not operate for about 3 minutes, in order to prevent fuse blowouts. * Whenever the electrical breaker is turned off then on again or the power supply plug is disconnected and then reconnected, the protection circuit will operate for about 3 minutes, preventing unit operation during that period.
G
george69Sep 9, 2025
Why does my Fujitsu AOT30LMADL Air Conditioner smell?
- S
  Samuel HallSep 9, 2025
  A smell emitted from your Fujitsu Air Conditioner's indoor unit may be the result of room smells (furniture, tobacco, etc.) which have been taken into the air conditioner.
K
Katherine ChavezNov 19, 2025
Why does the Fujitsu Air Conditioner airflow become weak or stop?
- K
  kimberly34Nov 19, 2025
  Weak or stopped airflow in your Fujitsu Air Conditioner can occur due to several reasons: * 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. * In the monitor AUTO operation, the fan will operate at very low speed. * In case of Multi-type unit, if multiple units are operated in different operation modes...

This document is an operating manual for a Fujitsu Ceiling Wall Type Inverter Air Conditioner. It covers the indoor units AWT24LB and AWT30LB, and outdoor units AOT24LM and AOT30LM.

Function Description

The Fujitsu Ceiling Wall Type Inverter Air Conditioner is designed for both heating and cooling, offering various operational modes to suit user preferences and room conditions. It features an "AUTOMATIC OPERATION" mode where the unit selects the appropriate mode (Heating, Cooling, or Monitor) based on the thermostat setting and actual room temperature. The "SLEEP TIMER" function adjusts the thermostat setting gradually during sleep to prevent excessive warming or cooling, then automatically turns off the unit. For quieter operation, the "SUPER QUIET OPERATION" mode reduces the indoor unit's airflow. The unit also boasts "OMNI-DIRECTIONAL AIR FLOW (SWING OPERATION)" for three-dimensional control of air direction, utilizing both UP/DOWN and RIGHT/LEFT air direction swings.

Important Technical Specifications

Refrigerant: R410A
Oil Type: Polyol Ester oil
Indoor Unit Models: AWT24LB, AWT30LB
Outdoor Unit Models: AOT24LM, AOT30LM
Thermostat Setting Range:
- AUTO: 18 to 30 °C
- Heating: 16 to 30 °C
- Cooling/Dry: 18 to 30 °C
Remote Control Operating Range: About 7 meters
Power Interruption Recovery: AUTO Restart function restores previous settings after power failure.
Air Cleaning Filters:
- Air Purifying Filter (Wasabi Filter): Catches dust mites, tobacco smoke, pollutants, mold, and bacteria. Normal life is about three months.
- Deodorizing Filter (Light Recovery Filter): Absorbs tobacco smoke, pet dander, and other contaminants. Regenerated by sunlight every six months; no replacement needed for three years under normal conditions.

Usage Features

The air conditioner is controlled primarily via a wireless remote control unit.

Operating Modes:

START/STOP Button: Initiates or ceases operation.
MASTER CONTROL Button: Cycles through operating modes: AUTO, HEAT, COOL, DRY, FAN.
SET TEMP. Buttons (∧/∨): Adjusts the thermostat setting.
FAN CONTROL Button: Selects fan speed: AUTO, HIGH, MED, LOW, QUIET. In DRY mode, fan speed cannot be changed manually.
TIMER Operation:
- ON Timer: Starts operation at a set time.
- OFF Timer: Stops operation at a set time.
- PROGRAM Timer: Combines ON and OFF timer operations within a 24-hour period.
SLEEP Timer: Sets the duration of operation before automatic shutdown, with gradual temperature adjustments for comfort.
MANUAL AUTO Operation: A button on the main unit allows basic AUTO mode operation (23 °C thermostat, AUTO fan speed) if the remote control is unavailable.

Airflow Direction Control:

AIR FLOW DIRECTION VERTICAL SET Button: Adjusts UP/DOWN air direction flaps. Ranges vary by mode (Cooling/Dry: 1-3; Heating: 1-4, 6).
AIR FLOW DIRECTION HORIZONTAL SET Button: Adjusts RIGHT/LEFT air direction louvers.
SWING Operation:
- VERTICAL SWING: Automatically swings UP/DOWN flaps.
- HORIZONTAL SWING: Automatically swings RIGHT/LEFT louvers.
- Swing range is relative to the currently set airflow direction.

Safety Precautions:

Installation and servicing must be performed by qualified personnel.
Do not insert fingers or objects into outlets/grilles.
Avoid direct exposure to cold air for extended periods.
Do not operate with wet hands.
Turn off power before cleaning or extended non-use.
Do not block intake grille or outlet port.
Keep electronic equipment at least one meter away.
Avoid installing near fireplaces or heating apparatus.
Do not use inflammable gases near the unit.

Maintenance Features

Intake Filters:

Removal: Fingers in grids, lift up, pull out.
Cleaning: Vacuum or wash with mild detergent and warm water. Dry thoroughly in a shady place.
Frequency: Clean every five weeks under normal use.
Installation: Hang edge on body, push forward to secure.
Mildew-Resistant: Treated to resist mildew growth.

Air Cleaning Filters (Air Purifying Filter and Deodorizing Filter):

Installation:
1. Remove intake filters.
2. Remove holder from each filter frame.
3. Attach holder and air purifying/deodorizing filter to the filter frame (hooks on holder should hook filter frame).
4. Install intake filters with attached air cleaning filters into the indoor unit.
Maintenance:
- Air Purifying Filter: Replace every three months (or sooner if dirty). Do not wash or reuse. Purchase replacement (UTR-FB11) from parts dealer.
- Deodorizing Filter: Do not wash. Regenerate by vacuuming dust and placing in direct sunlight for six hours every six months. No replacement needed for three years.
Precautions: Do not place near stoves or hot appliances. Set fan speed to HIGH for increased efficiency when using these filters.

General Maintenance:

Regular inspection by authorized service personnel is recommended for units used for extended periods.
When cleaning the unit's body, use water cooler than 40 °C; avoid harsh abrasive cleansers, volatile agents, liquid insecticides, or hairsprays.
Before shutting down for a month or more, operate in fan mode for half a day to dry internal parts.