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Operating Instructions
Air Conditioner
Model No.
Indoor Unit
CS-U25WKR
CS-U35WKR
CS-U50WKR
ACXF55-28590_SS0720-0_EN.indd 1
Outdoor Unit
CU-U25WKR
CU-U35WKR
CU-U50WKR
Operating Instructions
Air Conditioner
Before operating the unit, please read these operating
instructions thoroughly and keep them for future reference.
The included Installation Instructions should be kept and read
by the installer before installation.
Remote control is packaged in the indoor unit and removed
by the installer before installation.
ACXF55-28590
24/6/2020 10:36:02 AM

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Summarization of Contents

Operating Instructions
Quick Guide and Setup
Steps for inserting batteries and setting the clock on the remote control.
Basic Operation Guide
Instructions on how to start, stop, select modes, and adjust temperature.
Safety Precautions
General Safety Warnings
Essential warnings for unit operation, power supply, and handling.
Refrigerant and Installation Safety
Precautions related to flammable refrigerant (R32) and installation procedures.
Operational and Maintenance Safety
Safety during operation, repairs, leak checks, charging, and system management.
How to Use
Adjusting Airflow and Fan Speed
Guide to controlling airflow direction and fan speed settings for comfort.
Sleep Mode and Timer Functions
Instructions for setting sleep mode and ON/OFF timers for automated operation.
To Learn More
Unit Features and Operation Modes
Explanations of operation modes, energy saving, and auto restart.
Cleaning Instructions
Indoor Unit Cleaning Procedures
Steps for cleaning indoor unit components like filters and panels.
Outdoor Unit and Drain Maintenance
Instructions for cleaning outdoor unit debris and drain pipe.
Troubleshooting
Identifying and Resolving Common Issues
Lists symptoms, causes, and pre-service checks for malfunctions.
Error Code Diagnostics
How to retrieve and interpret error codes for unit diagnostics.
Important Information
Disposal and Symbol Guide
Guidelines for equipment disposal and explanation of warning symbols.