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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 Remote Batteries
Guide on how to insert batteries into the remote control for operation.
Setting the Clock
Instructions for setting the current time on the remote control for accurate operation.
Basic Operation
Start and Stop Unit
How to turn the air conditioner on and off using the remote control.
Select Operation Mode
Choosing between AUTO, COOL, DRY, HEAT, or FAN modes for desired comfort.
Set Desired Temperature
Adjusting the desired temperature using the TEMP UP/DOWN buttons on the remote.
Safety Precautions
General Warnings and Symbols
Important warnings, cautions, and symbols related to the safe use of the appliance.
Indoor and Outdoor Unit Safety
Safety guidelines for the installation and operation of the indoor and outdoor components.
Remote Control Safety
Precautions for safe handling and use of the remote control to prevent injury.
Power Supply and Unit Safety
Power Supply Safety Guidelines
Guidelines to prevent electrical hazards related to the power supply cord and connections.
Indoor/Outdoor Unit Safety Precautions
Specific safety measures for the air conditioner units to prevent damage or injury.
Refrigerant and Installation Safety
R32 Refrigerant Handling Precautions
Safety measures when handling the R32 flammable refrigerant to prevent fire risk.
Installation Safety Guidelines
Precautions to ensure safe installation of the air conditioner, including room area.
Servicing and Installation Safety
Installation Space Requirements
Ensuring adequate space, ventilation, and accessibility for installation and maintenance.
Service Personnel Qualifications
Qualifications and training required for personnel performing servicing on the unit.
Safe Work Practices for Servicing
Procedures and precautions for conducting work on the unit safely.
Safety Checks and Procedures
Refrigerant Leak Detection and Management
Procedures for checking and managing refrigerant leaks to ensure safety.
Electrical Device Safety Checks
Safety checks for electrical components before and during maintenance to prevent hazards.
Repair and Leak Detection Safety
Component Repair Safety Measures
Safety measures during repair of sealed and intrinsically safe components.
Acceptable Leak Detection Methods
Acceptable methods for detecting refrigerant leaks in the system.
Refrigerant Handling Safety
Removal, Evacuation, and Charging
Safe steps for removing, evacuating, and charging refrigerant in the system.
Decommissioning Procedures
Steps for safely decommissioning the air conditioning unit and its components.
Recovery and Labelling Safety
Refrigerant Recovery and Labelling
Safe practices for recovering refrigerant and labelling the equipment correctly.
How to Use
Airflow Direction Control
Adjusting the direction of airflow for optimal comfort and air distribution.
Fan Speed and Quiet Mode
Controlling fan speed and activating quiet operation for reduced noise.
Powerful and Eco Modes
Using powerful mode for quick cooling and eco mode for energy saving.
Advanced Usage Features
Sleep Operation Mode
Setting the sleep mode for comfortable nighttime operation and temperature adjustment.
Timer Settings
Programming the unit to turn on or off at specific preset times.
Learn More About Operation
Operation Modes Explained
Detailed descriptions of AUTO, HEAT, COOL, DRY, and FAN modes.
Energy Saving Temperature Settings
Recommended temperature ranges for energy efficiency and comfort.
Airflow Direction Details
Specifics on how airflow direction changes automatically in different operational modes.
Auto Restart Control Function
How the unit resumes operation automatically after a power failure.
Cleaning the Air Conditioner
Indoor Unit Cleaning Procedure
Instructions for cleaning the indoor unit gently with a soft cloth.
Outdoor Unit Cleaning Procedure
How to clean debris around the outdoor unit and clear the drain pipe.
Air Filter Maintenance
Procedure for washing and drying air filters every two weeks for optimal performance.
Anti-bacterial Filter Care
Cleaning and replacement guidelines for the anti-bacterial filter.
Troubleshooting Symptoms
Common Symptoms and Causes
Lists common issues that do not indicate a malfunction and their corresponding causes.
Pre-Servicing Checks
Checks to perform before calling for servicing on operation issues.
Troubleshooting Scenarios
Remote Control Malfunctions
Steps to take if the remote control is missing or not functioning correctly.
Indicator Brightness & Seasonal Checks
Adjusting indicator brightness and performing seasonal inspections of the unit.
Extended Non-Use Preparation
Steps to take when the unit will not be used for an extended period to prevent issues.
Error Code Retrieval
How to Retrieve Error Codes
Step-by-step guide to retrieve error codes using the remote control.
Diagnostic Error Code List
A list of diagnostic displays and their corresponding abnormalities or protection controls.
Information and Disposal
Equipment Disposal Information
Information on the collection and disposal of old equipment and used batteries according to regulations.
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