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O P E R A T I O N M A N U A L
SPLIT DUCT AIR CONDITIONER
MODELS:
(R410A)
Before using your air conditioner , please read this manual carefully and keep it for future reference.
KSTU440HFAN1/KSUR440HFAN3
KSTU560HFAN1/KSUR560HFAN3
DK14-02.02.29
Thank you very much for purchasing our air conditioner,

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Table of Contents
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Summarization of Contents

Important Safety Information
General Safety Guidelines
Covers health, operational, disposal, and refrigerant handling safety advice.
Installation & Electrical Safety Warnings
Critical warnings regarding installation, electrical hazards, and fuse replacement.
Operational & Maintenance Cautions
Cautions on unit operation, maintenance, grounding, and preventing damage or injury.
Electric Safety Requirements
Wiring and Grounding Standards
Guidelines for qualified electricians on wiring, distribution, and proper grounding.
Power Supply Specifications
Requirements for a separate, compliant power supply and electrical performance parameters.
Important Notes on Power Supply
Key notes on power supply, including preheating and blocking air inlet/outlet.
Functions & Features
Key Features Overview
Highlights nested design, high capacity cooling/heating, innovative air supply, and remote control function.
Model, Specification & Parameters
Model and Performance Data
Details model numbers, specifications, and performance parameters for cooling and heating.
Air Conditioner Component Overview
Indoor and Outdoor Unit Components
Identifies key components of the indoor and outdoor units, including air outlets and refrigerant pipes.
Operation Precautions
Pre-Operation Checks
Essential checks to perform before operating the air conditioner to ensure proper function and safety.
Operational Safety Guidelines
Safety measures to follow during operation, including avoiding moisture and flammable materials.
General Operation Advice
Advice on airflow direction, temperature, window usage, and setting operation time.
Beat Operation
Beat Operation Guidelines
Instructions for optimal beat operation, including airflow, temperature, and window settings.
Maintenance & Upkeep
Important Maintenance Points
Highlights that only professionals can perform repair and emphasizes power switch usage.
Indoor Unit Maintenance
Details on cleaning ventilating slots, filters, and replacing filters.
Outdoor Unit Maintenance
Warnings about sharp edges and advice to check air inlet/outlet for blockages.
Long-Term Idle Operation Preparation
Steps to prepare the unit for long periods of inactivity, including drying and power cutoff.
Startup After Extended Downtime
Checks required before restarting the unit after a long period of non-use.
Phenomena Not Attributable to Faults
Normal Operation Characteristics
Describes phenomena like delayed startup, white aerosol, and sounds that are not unit faults.
Faults of Air Conditioner and Cause
Immediate Action for Faults
Lists fault conditions requiring immediate shutdown and contact with service centers.
System Not Running Troubleshooting
Troubleshooting steps for power supply, fuses, remote controller, and set temperature issues.
Poor Cooling Effect Troubleshooting
Identifies causes and handling for poor cooling, such as refrigerant issues or dirty units.
Poor Heating Effect Troubleshooting
Identifies causes and handling for poor heating, such as refrigerant leaks or low outdoor temperatures.
Faults of Remote Controller and Cause
Shift Function Not Setting
Troubleshooting for when wind speed or mode selection does not work.
No Receiving Signal
Checks for issues when the ON/OFF button is pressed but no signal is received.
Transmitting Symbol Not Blinking
Addresses low battery issues or other causes for the transmitting symbol not appearing.
Temperature Indicator Issues
Troubleshooting when the temperature indicator does not light up or the mode cannot be set.
Display Disappearance
Explains reasons for display disappearance, such as expired timers or automatic start-up.
Repair and Troubleshooting
General Repair Advice
Instructions to shut down the unit, cut power, and contact distributors for repair.
Troubleshooting Display Codes
Lists common error displays and their corresponding problems and causes.

Table of Contents