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SERVICE MANUAL
AIR-CONDITIONER
RAS-10YK-ES / RAS-10YA-ES
RAS-10YK-HX / RAS-10YA-HX
SPLIT WALL TYPE
RAS-07YKX / RAS-07YAX
RAS-10YKX / RAS-10YAX
RAS-11YKX / RAS-11YAX
RAS-07YK-E / RAS-07YA-E
RAS-10YK-E / RAS-10YA-E
RAS-07YK-ES/RAS-07YA-ES
RAS-07YKX-T / RAS-07YAX-T
RAS-10YKX-T / RAS-10YAX-T
FILE NO. DAS-SM-00-001

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Summarization of Contents

Construction Views
Indoor Unit Construction
Details the physical construction and dimensions of the indoor unit.
Outdoor Unit Construction
Provides detailed views and dimensions for the outdoor unit, including mounting.
Electrical Parts Specifications
Indoor Unit Electrical Parts
Lists and specifies electrical components used in the indoor unit.
Outdoor Unit Electrical Parts
Details electrical components for the outdoor unit, including compressor and fan motor.
Operation Descriptions
FAN ONLY Operation
Explains the operation when the mode is set to FAN ONLY, including fan speed control.
COOL Operation
Details control of compressor, outdoor fan, and display during COOL operation.
Louver Control
Describes automatic control and manual setting of vertical air flow louvers.
DRY Operation
Describes compressor and fan operation during DRY mode, including temperature-dependent patterns.
AUTO Operation
Explains mode selection between Cooling or Dry based on room temperature.
ECONO. Mode
Details the ECONO. mode function for reduced power consumption via airflow control.
Low-Temperature Limit Control
Describes control to prevent indoor heat exchanger freezing during cooling.
Auto Restart Function
Explains the automatic restart feature resuming previous settings after power failure.
Cancel Auto Restart Function
Details the procedure to cancel the Auto Restart function.
Power Failure During Timer Operation
Explains how power failures affect ON-TIMER and OFF-TIMER operations when Auto Restart is set.
Installation Procedure
Safety Cautions
Provides critical safety warnings and precautions for the installation of the air conditioner unit.
Installation Diagram Indoor and Outdoor Units
Illustrates the installation process and placement of both indoor and outdoor units.
Installation Details
Covers installation of optional parts and lists necessary installation parts.
Indoor Unit Installation
Provides guidelines for selecting the installation place for the indoor unit and remote control.
Cutting Hole and Mounting Plate
Explains how to cut a hole in the wall and mount the installation plate for the indoor unit.
Electrical Work Requirements
Details requirements for electrical work, including supply voltage and wiring capacity.
Wiring Connection Procedure
Explains the procedure for connecting the main power cord and internal wiring.
Piping and Drain Hose Installation
Guides the installation of refrigerant piping and drain hoses for proper function.
Indoor Unit Mounting
Describes the steps for physically mounting the indoor unit onto the installation plate.
Drainage Management
Explains the proper method for running the drain hose and managing condensate.
Outdoor Unit Installation
Specifies suitable installation locations for the outdoor unit, considering wind and clearance.
Refrigerant Piping Connection
Details the process of connecting refrigerant piping, including flaring and tightening.
Vacuum Pumping Procedure
Outlines the procedure for vacuum pumping the refrigerant lines to remove air and moisture.
Outdoor Unit Wiring Connection
Describes wiring connection steps for the outdoor unit, emphasizing cable routing.
Other Installation Checks
Covers miscellaneous checks and procedures for installation, such as leak tests.
Gas Leak Test
Explains how to perform a gas leak test on flare nut and service cap connections.
Test Operation
Describes how to switch the unit to TEST RUN (COOL) mode for initial testing.
Auto Restart Setting
Explains how to enable the Auto Restart function, which resumes previous settings after power failure.
Troubleshooting Chart
Precheck Items
Lists initial checks for power supply, cable connections, and basic operations.
Primary Judgement of Trouble Sources
Provides guidance on judging trouble sources based on symptoms and display codes.
Troubleshooting Flowcharts
Offers step-by-step flowcharts for diagnosing operational issues.
Remote Control and P.C. Board Check
Details procedures for checking the functionality of the remote control and the indoor unit's P.C. board.
P.C. Board Checking Procedures
Explains operating precautions and inspection procedures for the Printed Circuit (P.C.) board.
Part Replacement
Indoor Unit Part Replacement
Provides step-by-step instructions for replacing parts of the indoor unit.
Microcomputer Replacement
Details the procedure for replacing the microcomputer and thermal fuse assembly.
Outdoor Unit Part Replacement
Guides the replacement of key components in the outdoor unit.
Exploded Views and Parts List
Indoor Unit (1) Exploded View
Shows an exploded view and parts list for indoor unit electrical components and housing.
Indoor Unit (2) Exploded View
Presents exploded views and parts lists for indoor unit filters, louvers, and motors.
Indoor Unit (3) Exploded View
Details exploded views and parts lists for indoor unit sensors, plates, and covers.
Indoor Unit (4) Exploded View
Lists and illustrates exploded views for indoor unit panels, pipes, and connectors.
Outdoor Unit (1) Exploded View
Provides an exploded view and parts list for the outdoor unit's fan, condenser, and compressor.
Outdoor Unit (2) Exploded View
Shows exploded views and parts lists for outdoor unit fan motor, compressor, and capacitors.
Outdoor Unit (3) Exploded View
Details exploded views and parts lists for outdoor unit components including fan motor, compressor.
Outdoor Unit (4) Exploded View
Illustrates exploded views and lists parts for the outdoor unit, covering guards, fans, and compressors.

Table of Contents