Table of Contents
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Service Manual
CS-A73KE / CU-A73KE
CS-A93KE / CU-A93KE
CS-A123KE / CU-A123KE
Contents
Features .......................................................... 1
Functions ................................................... 2 - 4
Product Specifications ............................. 5 - 10
Dimensions ............................................ 11 - 12
Refrigeration Cycle Diagram ......................... 13
Block Diagram ............................................... 14
Wiring Diagram .............................................. 15
Operation Details ................................... 16 - 30
Installation Information .......................... 31 - 32
2-way, 3-way Valves .............................. 33 - 39
Servicing Information ............................. 40 - 42
Troubleshooting Guide .......................... 43 - 44
Technical Data ....................................... 45 - 48
Exploded View ................................... 49, 51, 53
Replacement Parts List ..................... 50, 52, 54
Electronic Parts List ....................................... 55
ORDER NO. MAC9902015C2
Room Air Conditioners
© 1999 Matsushita Air-Conditioning Corp. Sdn. Bhd.
(183914D)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
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Table of Contents
Troubleshooting
Related Manuals for Panasonic CS-A93KE
Summarization of Contents
Features Overview
High Efficiency and Compact Design
Highlights the unit's efficiency and compact nature.
Comfort and Convenience Features
Details on sleep mode, air purifying filter, and auto restart.
Design Improvements
Covers quality improvements, serviceability, and operational enhancements.
Installation Piping Capabilities
Specifies maximum piping lengths for different models.
Functions and Controls
Remote Control Interface
Explains operation modes, fan speed, and airflow direction via remote.
Temperature and Timer Settings
Details on setting temperature, timers, clock, and sleep mode.
Indoor Unit Controls and Indicators
Describes power, auto operation, signal reception, and indicator lamps.
Indoor Unit Operation Modes
Details on standard, powerful, and economy operation modes.
Indoor Unit Safety and Control Features
Covers auto restart, anti-freezing, fan speed, airflow, and start controls.
Outdoor Unit Protection and Control
Explains compressor protection, deicing, and valve controls.
Product Specifications
General Performance Specifications
Covers cooling/heating capacity, moisture removal, airflow, and noise.
Electrical and Piping Specifications
Details electrical input, running current, piping sizes, and drain.
Component Mechanical Specifications
Lists compressor type, air circulation, dimensions, and net weight.
Heat Exchanger and Refrigerant System Specs
Details heat exchanger materials, refrigerant control, and oil.
Electrical Components and Filters
Specifies thermostat, protection devices, air filters, and capacitors.
CS-A93KE/CU-A93KE General Specs
Performance data for CS-A93KE/CU-A93KE models.
CS-A93KE/CU-A93KE Electrical and Piping Specs
Electrical and piping details for CS-A93KE/CU-A93KE.
CS-A93KE/CU-A93KE Component Specs
Mechanical specs for CS-A93KE/CU-A93KE compressor and circulation.
CS-A93KE/CU-A93KE Heat Exchanger and Refrigerant Specs
Heat exchanger and refrigerant system data for CS-A93KE/CU-A93KE.
CS-A93KE/CU-A93KE Electrical Components and Filters
Electrical components and filter specs for CS-A93KE/CU-A93KE.
CS-A123KE/CU-A123KE General Specs
Performance data for CS-A123KE/CU-A123KE models.
CS-A123KE/CU-A123KE Electrical and Piping Specs
Electrical and piping details for CS-A123KE/CU-A123KE.
CS-A123KE/CU-A123KE Component Specs
Mechanical specs for CS-A123KE/CU-A123KE compressor and circulation.
CS-A123KE/CU-A123KE Heat Exchanger and Refrigerant Specs
Heat exchanger and refrigerant system data for CS-A123KE/CU-A123KE.
CS-A123KE/CU-A123KE Electrical Components and Filters
Electrical components and filter specs for CS-A123KE/CU-A123KE.
Unit Dimensions and Installation
Indoor Unit Dimensions
Provides dimensional drawings for the indoor unit.
Installation Plate Positioning
Illustrates the placement and fixing points for the installation plate.
Outdoor Unit Dimensions
Shows dimensional drawings for the outdoor units (CU-A73KE/A93KE).
Outdoor Unit Dimensions (CU-A123KE)
Provides dimensional drawings for the CU-A123KE outdoor unit.
Installation Space Requirements
Specifies clearance needed around the outdoor unit for installation.
System Diagrams
Refrigeration Cycle Overview
Illustrates the refrigerant flow in cooling and heating modes.
System Block Diagram
Shows the interconnections between indoor and outdoor unit components.
Wiring Diagram
Details electrical connections, including resistance values.
Operation Details
Cooling Mode: Safety and Timing Controls
Explains time delay, time save, and starting current controls.
Cooling Mode: Protection Mechanisms
Details anti-freezing and compressor reverse rotation protection.
Cooling Mode: Compressor Protection
Describes compressor protection against fan motor failure.
Cooling Mode: Automatic Fan Speed
Explains automatic fan speed adjustments during cooling.
Cooling Mode: Operation Timing Diagram
Visual representation of cooling operation sequences and timings.
Soft Dry Mode: Safety and Protection
Covers safety, protection, and fan speed for soft dry operation.
Soft Dry Mode: Operation Timing Diagram
Visual representation of soft dry operation sequences and timings.
Heating Mode: Safety and Valve Controls
Details safety, overload, reverse rotation, and 4-way valve controls.
Heating Mode: Fan and Start Controls
Explains outdoor fan control and hot start procedures.
Heating Mode: Automatic Fan Speed
Describes automatic fan speed adjustments based on heat exchanger temperature.
Heating Mode: Operation Timing Diagram
Visual representation of heating operation sequences and timings.
Deicing Control Mechanisms
Explains normal and overload deicing procedures.
Deicing End Conditions and Post-Deice Actions
Details how deicing ends and actions taken after deicing.
Normal Deicing: Time Diagrams
Time charts illustrating normal deicing operation.
Overload Deicing: Time Diagrams
Time charts illustrating overload deicing operation.
Automatic Mode: Operation Determination
Describes how the unit determines the operation mode.
Automatic Mode: Set Temperature Adjustment
Explains automatic temperature setting and adjustments.
Sleep Mode Operation
Details the functionality and timings of the sleep mode.
Random Auto Restart and Timer Controls
Covers auto restart after power failure and delay timer functions.
Remote Control Signal Feedback
Explains the beep sounds for remote control operations.
Indoor Fan Speed Control Modes
Details auto and manual fan speed settings.
Airflow Direction Control Modes
Describes vertical and horizontal airflow adjustments.
Economy Mode Operation Settings
Explains temperature and fan speed adjustments for economy mode.
Economy Mode Stop Conditions
Lists scenarios that will stop the economy mode.
Powerful Mode Operation Settings
Details temperature and fan speed adjustments for powerful mode.
Powerful Mode Stop Conditions
Lists scenarios that will stop the powerful mode.
Installation Information
Included Accessories
Lists all accessories provided with the unit.
Installation Location Guidelines
Recommendations for optimal indoor and outdoor unit placement.
Piping Requirements and Refrigerant
Specifies piping sizes, lengths, and refrigerant addition.
Unit Installation Diagram and Piping Insulation
Illustrates installation steps and piping insulation methods.
Outdoor Unit Connection Details
Shows connection diagrams for CU-A123KE and CU-A73KE/CU-A93KE.
Valve Operation and Service
2-way and 3-way Valve Functions
Details valve positions for shipping, operation, and servicing.
Installation Procedures
Evacuation of Installation
Step-by-step guide for evacuating air from the system.
Pumping Down
Procedure for pumping down refrigerant before servicing.
Evacuation for Re-installation
Guide for evacuating air when reinstalling the unit.
Refrigerant Management
Balancing 2-way and 3-way Valves
Procedure to balance refrigerant when low.
Evacuation (No Refrigerant)
Steps for evacuating the system when there is no refrigerant.
Gas Charging Procedure
Instructions for charging refrigerant into the system.
Servicing Information
Indoor Electronic Controller Inspection
Steps for inspecting and accessing the indoor electronic controller.
Indoor Fan Motor Removal
Procedure for removing the indoor fan motor.
Cross Flow Fan Removal
Procedure for removing the cross flow fan assembly.
Remote Control Reset and Configuration
Covers resetting the remote and changing transmission codes.
Troubleshooting Guide
Refrigeration Cycle Diagnostics
Guides for checking refrigerant cycle issues.
Air Temperature and Pressure Checks
Methods for measuring air temperature difference and gas pressure.
Pressure, Current, and Condition Correlation
Relates system conditions to pressure and electric current.
Compressor and 4-Way Valve Malfunction Diagnosis
Diagnosing faults in the compressor and 4-way valve.
Technical Data
Thermostat Operation Characteristics
Graphs showing thermostat behavior in cooling, soft dry, and heating.
Operation Characteristics (CS-A73KE/CU-A73KE)
Performance graphs for cooling and heating modes.
Operation Characteristics (CS-A93KE/CU-A93KE)
Performance graphs for CS-A93KE/CU-A93KE cooling and heating.
Operation Characteristics (CS-A123KE/CU-A123KE)
Performance graphs for CS-A123KE/CU-A123KE cooling and heating.
Exploded View
Indoor Unit Components
Diagram showing disassembled parts of the indoor unit.
Outdoor Unit Components (CU-A73KE/CU-A93KE)
Diagram showing disassembled parts of the outdoor unit.
Outdoor Unit Components (CU-A123KE)
Diagram showing disassembled parts of the CU-A123KE outdoor unit.
Replacement Parts List
Parts for CS-A73KE/CS-A93KE/CS-A123KE
List of replacement parts for indoor units.
Parts for CU-A73KE/CU-A93KE
List of replacement parts for outdoor units.
Parts for CU-A123KE
List of replacement parts for the CU-A123KE outdoor unit.
Electronic Parts List
Controller Components
List of electronic components for the control board.
Electronic Circuit Diagram
System Diagrams and Sensor Characteristics
Includes circuit diagrams and sensor data.
Using the Circuit Diagram: Symbols and Measurements
Guide to interpreting circuit diagrams, symbols, and measurements.
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