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Operating Instructions
Air Conditioner
Model No.
Indoor Unit
CS-RZ25XKRW
CS-RZ35XKRW
CS-RZ42XKRW
CS-RZ50XKRW
Outdoor Unit
Single Split
CU-RZ25XKR
CU-RZ35XKR
CU-RZ42XKR
CU-RZ50XKR
* Outdoor Unit
Multi Split
CU-2Z52VBR
CU-3Z54VBR
CU-4Z71VBR
CU-4Z80VBR
CU-5Z100VBR
Operating Instructions
Air Conditioner
Before operating the unit, please read these operating
instructions thoroughly and keep them for future reference.
Before installation, the installer should:
Read the Installation Instructions, then request the customer
keep them for future reference.
Remove the remote control packed with the indoor unit.
* Kindly consult authorised dealer for connectivity validity.
ACXF55-31330
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Summarization of Contents
Quick Guide
Inserting the batteries
Instructions for inserting batteries into the remote control.
Clock Setting
Procedure to set the clock time on the remote control.
Basic Operation
Starting and Stopping the Unit
How to turn the air conditioner on and off using the remote.
Selecting Operation Mode
Guide to choosing between AUTO, FAN, DRY, and COOL modes.
Setting the Temperature
Instructions for adjusting the desired temperature using UP/DOWN buttons.
Safety Precautions
General Safety Warnings
Important safety information regarding appliance use and potential hazards.
Indoor and Outdoor Unit Safety
Specific safety guidelines for the indoor and outdoor components of the unit.
Remote Control Safety
Safety advice related to the handling and use of the remote control.
Power Supply and Unit Safety
Power Supply Precautions
Precautions for safe electrical connection and handling of the power supply.
Indoor and Outdoor Unit Precautions
Guidelines to prevent damage, corrosion, or injury from unit components.
Remote Control Precautions
Advice to prevent remote control malfunction or damage.
Refrigerant and Installation Safety
Refrigerant Safety (R32)
Warnings and precautions regarding the use of R32 flammable refrigerant.
Installation Space Requirements
Guidelines for selecting an appropriate installation location for safety.
Servicing and Work Safety
Servicing Personnel Requirements
Qualifications and training needed for service personnel handling refrigerants.
Work Procedures and Safety Checks
Safety protocols for maintenance and repair work on the system.
Leak Detection and Ignition Control
Refrigerant Leak Detection and Ventilation
Procedures for checking and responding to refrigerant leaks, ensuring ventilation.
Ignition Source Control and Electrical Safety
Measures to prevent fire risks and safety checks for electrical components.
Repair, Cabling, and Leak Detection Safety
Repair, Cabling, and Intrinsically Safe Components
Guidelines for safe repair, cabling checks, and working with safe components.
Refrigerant Leak Detection Methods
Approved methods for detecting refrigerant leaks safely.
Refrigerant Handling and Decommissioning
Refrigerant Removal, Evacuation, and Charging
Procedures for safe removal, evacuation, and charging of refrigerants.
Decommissioning Process Steps
Steps for safely decommissioning the air conditioner unit.
Refrigerant Recovery and Labelling
Vacuum, Cylinder Handling, and Recovery
Procedures for vacuum, cylinder handling, and safe refrigerant recovery.
Labelling and Mixing Precautions
Guidelines for labelling equipment and avoiding refrigerant mixing.
How to Use Features
Airflow Direction and Fan Speed Control
How to control airflow direction, fan speed, and QUIET mode.
Power Modes and Timer Settings
Explanation of POWERFUL/ECO modes and how to set the timer.
Advanced Usage Features
Sleep Mode Operation
How to use the SLEEP mode for a comfortable sleeping environment.
Timer Setting Procedure
Instructions for setting ON and OFF timers for the unit.
To Learn More...
Operation Modes and Energy Saving
Detailed explanation of operation modes and recommended energy saving temperatures.
Airflow Control and Auto Restart
How airflow direction changes and the auto restart function.
Operating Conditions
Temperature Range Guidelines
Table showing operating temperature ranges for COOL and HEAT modes.
Cleaning the Air Conditioner
Indoor and Outdoor Unit Cleaning
Instructions for cleaning the indoor unit, outdoor unit, and drain pipe.
Filter Maintenance and Panel Removal
Procedure for filter cleaning/replacement and front panel removal/installation.
Troubleshooting Common Issues
Symptoms, Causes, and Pre-Servicing Checks
List of common symptoms, causes, and basic checks before calling service.
Operation Specific Troubleshooting
Troubleshooting for specific operational issues like efficiency and noise.
Advanced Troubleshooting and Maintenance
Remote Control and Indicator Issues
How to resolve remote control problems and adjust indicator brightness.
Seasonal Checks and Non-Use Preparation
Guidance for inspecting the unit after non-use and preparing for storage.
Conditions Requiring Dealer Service
List of critical issues that necessitate professional service.
How to Retrieve Error Codes
Retrieving and Interpreting Error Codes
Steps to retrieve error codes using the remote and reference their meaning.
Information and Symbols
Disposal and Battery Collection Information
Information on collecting and disposing of old equipment and batteries.
Explanation of Manual Symbols
Explanation of various warning and information symbols used in the manual.
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