Fujitsu ASTA18LCC User Manual (English)

Questions and Answers:

J
joseph92Aug 19, 2025
Why is my Fujitsu ASTA18LCC Air Conditioner cooling poorly?
- J
  Jeremy NelsonAug 19, 2025
  Several factors can affect the cooling performance of your Fujitsu Air Conditioner. Check the following: * Ensure the air filter is clean. * Make sure that the air conditioner's intake grille or outlet port isn't blocked. * Verify that the room temperature settings (thermostat) are correctly adjusted. * Check if any windows or doors are open. * If it's during cooling operation, close curtains to block bright sunlight. * Assess if there are heating appliances, computers, or too many people in the room. * Confirm that the unit is not set for SUPER QUIET operation.
A
Allison DawsonAug 21, 2025
Why is water produced from the outdoor unit of my Fujitsu ASTA18LCC Air Conditioner?
- S
  Sabrina MillerAug 21, 2025
  During heating operation, water may be produced from the outdoor unit of your Fujitsu Air Conditioner due to automatic defrosting operation.
C
Catherine WilliamsAug 23, 2025
How to fix a Fujitsu ASTA18LCC that doesn’t operate immediately?
- G
  Gloria GallegosAug 23, 2025
  If the Fujitsu unit 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.
T
Tamara ManningAug 28, 2025
Why doesn't my Fujitsu ASTA18LCC Air Conditioner operate immediately?
- E
  Eric StricklandAug 28, 2025
  Your Fujitsu Air Conditioner may not operate immediately after starting due to these reasons: * If the unit is stopped and then immediately started again, the compressor will not operate for about 3 minutes to prevent fuse blowouts. * 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.
J
John LeblancAug 30, 2025
What to do if Fujitsu ASTA18LCC Air Conditioner operates differently from the Remote Control Unit’s setting?
- K
  Kathleen HardyAug 30, 2025
  If your Fujitsu Air Conditioner operates differently from the remote control's settings, check if the remote control unit's batteries are dead or loaded properly.
M
Matthew LopezSep 2, 2025
Why does the Fujitsu Air Conditioner airflow become weak or stop?
- N
  Nicole LoweSep 2, 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 very low to allow internal parts to warm up. Also, during heating, if the room temperature rises above the thermostat setting, the outdoor unit will stop, and the indoor unit will operate at a very low fan speed. The unit will temporarily stop operation (between 7 and 15 minutes) during heating as the Automatic Defrosting mode operates. The fan may operate at a very low speed during Dry operation or when the unit monitors the room’s temperature. The fan will operate at a very low speed during SUPER QUIET operation or in monitor AUTO operation.
J
Jeffrey ChaseSep 4, 2025
Why is water being produced from the outdoor unit of my Fujitsu Air Conditioner?
- C
  Claudia MarquezSep 4, 2025
  During Heating operation, water may be produced from the outdoor unit due to Automatic Defrosting operation.
J
Justin LopezSep 6, 2025
What to do if my Fujitsu ASTA18LCC Air Conditioner doesn't operate at all?
- S
  Stacy SanchezSep 6, 2025
  If your Fujitsu Air Conditioner isn't operating at all, check these potential causes: 1. Ensure the power supply plug is properly connected to the outlet. 2. Check if there has been a power failure. 3. See if a fuse has blown out or a circuit breaker has been tripped. 4. Verify whether the timer is operating.
D
Deborah JonesSep 8, 2025
Why is my Fujitsu ASTA18LCC making noise?
- L
  laurenhayesSep 9, 2025
  Various noises can be normal for your Fujitsu Air Conditioner: * The sound of water flowing in the air conditioner's piping may be heard during operation and immediately after stopping the unit. * Noise may be particularly noticeable for about 2 to 3 minutes after starting operation due to the sound of coolant flowing. * During heating, a sizzling sound may occasionally be heard, which is produced by the automatic defrosting operation.
J
Jenna MarquezSep 12, 2025
Why is my Fujitsu Air Conditioner emitting mist or steam?
- L
  lcooleySep 12, 2025
  The emission of mist or steam from your Fujitsu Air Conditioner can occur due to: * During cooling or dry operation, a thin mist may be seen emitted from the indoor unit, resulting from the sudden cooling of room air, causing condensation. * During heating, the outdoor unit's fan may stop, and steam may be seen rising from the unit due to automatic defrosting operation.

Fujitsu ASTA18LCC Specifications

General

Brand	Fujitsu
Model	ASTA18LCC
Category	Air Conditioner
Language	English

Summary

Safety Precautions

General Safety Warnings

Essential safety guidelines and warnings for operating the air conditioner, including dangers and cautions.

Air Conditioner Features and Functions

Inverter Technology

Explanation of the inverter system for efficient and comfortable room temperature control.

Special Operating Modes

Details on Coil Dry, Auto Changeover, Sleep Timer, and Super Quiet operations for enhanced functionality.

Air Filters and Maintenance Features

Information on removable panel, mildew-resistant, air cleaning, and deodorizing filters for improved air quality.

Component Identification

Indoor Unit Components

Diagram and list of parts for the indoor unit of the air conditioner.

Remote Control Unit Components

Diagram and list of parts for the wireless remote control unit.

Outdoor Unit Components

Diagram and list of parts for the outdoor unit of the air conditioner.

Initial Setup and Preparation

Powering Up and Battery Installation

Instructions for connecting the power supply and loading batteries into the remote control.

Setting Current Time and Using Remote

Guide to setting the current time on the remote and how to use it effectively.

Operating the Air Conditioner

Selecting Operation Modes and Settings

How to select operation modes, set the thermostat, and adjust fan speed for desired comfort.

Super Quiet Operation Details

Explanation of the Super Quiet operation mode and its effects on performance.

Operation Modes and Stopping

Stopping Air Conditioner Operation

Procedure for safely stopping the air conditioner's operation.

Understanding Operation Modes

Detailed explanations of Heating, Cooling, Dry, and Fan modes, including AUTO CHANGEOVER.

Timer Functions

Setting ON or OFF Timers

Instructions for setting and cancelling single ON or OFF timers for scheduled operation.

Using the Program Timer

How to set and manage program timers for combined ON/OFF operations.

Timer Operation Management

Guidance on changing timer settings, stopping timer operations, and changing conditions.

Sleep Timer Operation

Setting and Managing Sleep Timer

How to set, change, cancel, or stop the sleep timer for automatic temperature adjustment.

Airflow Direction Control

Vertical Airflow Adjustment

How to adjust the vertical direction of airflow using the remote control's SET button.

Horizontal Airflow Adjustment

Manual adjustment of the right-left louvers for desired airflow direction.

Special Operations

Swing Operation

Instructions for activating, stopping, and understanding the automatic swing function of the louvers.

Coil Dry Operation

How to use the Coil Dry function to dry the indoor unit and prevent mold.

Manual Auto Operation

Procedure for operating the unit using main unit controls when the remote is unavailable.

Cleaning and Care

Intake Grille Maintenance

Procedure for removing, cleaning, and reinstalling the air conditioner's intake grille.

Air Filter and Unit Body Cleaning

Instructions for cleaning the standard air filter and the unit body.

Air Filter and Deodorizer Maintenance

Air Cleaning Filter Installation and Replacement

Step-by-step guide for installing and replacing air cleaning filters.

Deodorizing Filter Maintenance

Instructions for cleaning and maintaining the deodorizing filter to preserve its effectiveness.

Troubleshooting Common Issues

Operational Checks and Symptoms

Guide to diagnosing common operating problems like no operation, noise, smells, mist, and weak airflow.

Troubleshooting Performance and Settings

No Operation and Poor Performance

Troubleshooting steps for units that do not operate at all or exhibit poor cooling performance.

Setting Discrepancy Issues

Resolving issues where the unit operates differently from the remote control settings.

Operating Tips and Energy Saving

Recommended Operating Conditions

Guidelines on optimal outdoor and indoor temperature ranges for cooling, dry, and heating modes.

Energy Saving Advice

Tips for conserving energy, including unplugging the unit when not in use.

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Fujitsu ASTA18LCC User Manual

Table of Contents

Questions and Answers:

Fujitsu ASTA18LCC Specifications

Summary

Safety Precautions

General Safety Warnings

Air Conditioner Features and Functions

Inverter Technology

Special Operating Modes

Air Filters and Maintenance Features

Component Identification

Indoor Unit Components

Remote Control Unit Components

Outdoor Unit Components

Initial Setup and Preparation

Powering Up and Battery Installation

Setting Current Time and Using Remote

Operating the Air Conditioner

Selecting Operation Modes and Settings

Super Quiet Operation Details

Operation Modes and Stopping

Stopping Air Conditioner Operation

Understanding Operation Modes

Timer Functions

Setting ON or OFF Timers

Using the Program Timer

Timer Operation Management

Sleep Timer Operation

Setting and Managing Sleep Timer

Airflow Direction Control

Vertical Airflow Adjustment

Horizontal Airflow Adjustment

Special Operations

Swing Operation

Coil Dry Operation

Manual Auto Operation

Cleaning and Care

Intake Grille Maintenance

Air Filter and Unit Body Cleaning

Air Filter and Deodorizer Maintenance

Air Cleaning Filter Installation and Replacement

Deodorizing Filter Maintenance

Troubleshooting Common Issues

Operational Checks and Symptoms

Troubleshooting Performance and Settings

No Operation and Poor Performance

Setting Discrepancy Issues

Operating Tips and Energy Saving

Recommended Operating Conditions

Energy Saving Advice

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