Table of Contents
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Service Manual
CS-A181KR / CU-A181KR
CS-A241KR / CU-A241KR
Contents
Features .......................................................... 1
Functions ................................................... 2 - 4
Product Specifications ............................... 5 - 8
Dimensions .............................................. 9 - 10
Refrigeration Cycle Diagram ......................... 10
Block Diagram ............................................... 11
Wiring Diagram .............................................. 12
Operation Details ................................... 13 - 22
Installation Information .......................... 23 - 24
3-way Valves ......................................... 25 - 31
Servicing Information ............................. 32 - 35
Troubleshooting Guide .......................... 36 - 37
Technical Data ....................................... 38 - 40
Exploded View ......................................... 41, 43
Replacement Parts List ........................... 42, 44
Electronic Parts List ............................... 45 - 46
ORDER NO. MAC9903022C3
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
Related Manuals for Panasonic CS-A241KR
Summarization of Contents
Features
Key Unit Features
Overview of the unit's primary features and capabilities.
Functions
Remote Control Operation Modes
Details on operating the unit via remote control modes.
Remote Control Settings
Explanation of temperature, timer, and clock settings via remote.
Functions (Continued)
Indoor Unit Power and Control Switches
Operation of power, auto, and test switches on the indoor unit.
Indoor Unit Indicators, Modes, and Safety Features
LED indicators, operation modes, and safety controls for the indoor unit.
Indoor Unit Fan and Airflow Management
Control of indoor fan speed and airflow direction.
Functions (Continued)
Outdoor Unit Valve and Protection Controls
Management of 4-way, 2-way valves and overload protection.
Outdoor Fan and Deicing Functions
Control of outdoor fan speed and deicing process.
Product Specifications
Performance and Airflow Specifications
Cooling/Heating capacity, airflow, noise levels, and power source.
Electrical Data and Piping Connections
Electrical input, current, COP, and piping port details.
Physical Dimensions and Compressor/Fan Specs
Unit dimensions, weight, and internal component specifications.
Product Specifications (Continued)
Heat Exchanger and Refrigerant Details
Specifications for heat exchangers, refrigerant oil, and control devices.
Protection Devices and Capacitors
Details on protection devices, thermostat, and capacitors.
Product Specifications (Continued)
CS-A241K/CU-A241K Performance Specs
Cooling/Heating capacity, power, airflow for CS-A241K models.
CS-A241K/CU-A241K Electrical & Piping Data
Electrical data, current, COP, and piping for CS-A241K models.
CS-A241K/CU-A241K Component Specs
Compressor and fan specifications for CS-A241K models.
Product Specifications (Continued)
CS-A241K/CU-A241K Heat Exchanger & Refrigerant Details
Heat exchanger, refrigerant, and control specs for CS-A241K.
CS-A241K/CU-A241K Protection & Capacitor Specs
Protection devices, thermostat, and capacitor specs for CS-A241K.
Dimensions
Indoor Unit Dimensional Views
Front, top, and side views with measurements for the indoor unit.
Installation Plate and Remote Transmitter Dimensions
Dimensions of the installation plate and remote control.
Dimensions (Continued)
Outdoor Unit Installation Space Requirements
Required space and mounting dimensions for the outdoor unit.
Refrigeration Cycle Diagram
Refrigerant Flow Schematic
Diagram illustrating the refrigerant path during operation.
Block Diagram
System Connectivity Overview
Diagram showing interconnections between major system components.
Wiring Diagram
Electrical Wiring Schematic
Detailed wiring connections for the unit.
Component Resistance Values
Resistance measurements for fan motors and compressors.
Operation Details
Cooling Mode Safety Controls
Time delay, time saved, and anti-freezing safety features for cooling.
Operation Details (Continued)
Cooling Mode Fan Speed and Time Diagrams
Fan speed control and timing chart for cooling operation.
Operation Details (Continued)
Soft Dry Mode Operation Details
Specific functions and controls for Soft Dry mode.
Operation Details (Continued)
Heating Mode Safety and Control Features
Time delay, overload, 4-way valve, and hot start controls for heating.
Operation Details (Continued)
Heating Mode Fan Speed and Time Diagrams
Fan speed control and timing chart for heating operation.
Operation Details (Continued)
Deicing Control Procedures and Diagrams
Methods for deicing and associated time diagrams.
Operation Details (Continued)
Automatic Mode Operation and Set Temperature
Logic for automatic mode selection and temperature settings.
Operation Details (Continued)
Sleep Mode and Auto Restart Controls
Features for sleep mode and automatic restart after power loss.
Indoor Fan Speed Adjustment
Manual and automatic control of indoor fan speed.
Operation Details (Continued)
Airflow Direction and Delay Timer Controls
Managing airflow direction and delayed start timers.
Cold Draught Prevention
Mechanism to prevent cold air discharge during operation.
Installation Information
Included Accessories and Location Guidance
List of included parts and best practices for unit placement.
Piping Length and Refrigerant Guidelines
Specifications for piping length and additional refrigerant.
Installation Information (Continued)
Unit Installation Diagram and Piping Insulation
Visual guide for unit setup and piping insulation.
Required Installation Parts
List of parts that need to be purchased separately.
3-way Valve Operation
Valve States and Work Procedures
States of 3-way valves during different service operations.
Evacuation of Installation
Evacuation Procedure
Step-by-step guide for evacuating the refrigeration system.
Pumping down
Pumping Down Procedure
Steps for pumping down the refrigerant system.
Evacuation of Re-installation
Re-installation Evacuation Procedure
Steps for evacuating the system during re-installation.
Balancing Refrigerant
Balancing Refrigerant with 3-way Valves
Procedure for balancing refrigerant using 3-way valves.
Evacuation (No Refrigerant)
Evacuation Process
Evacuation process for a system without refrigerant.
Gas Charging
Gas Charging Procedure
Steps for charging the system with refrigerant.
Servicing Information
Indoor Unit Disassembly and Fan Motor Removal
Steps for disassembling the indoor unit and removing the fan motor.
Servicing Information (Continued)
Indoor Unit Component Removal
Procedures for removing discharge grille and fan motor.
Servicing Information (Continued)
Cross Flow Fan and Outdoor Unit Access
Procedures for removing fans and accessing outdoor unit components.
Servicing Information (Continued)
Remote Control Settings and Transmission Codes
Instructions for remote control setup and code changes.
Troubleshooting Guide
Refrigeration Cycle Diagnosis
Diagnosing issues based on refrigeration cycle parameters.
Troubleshooting Guide (Continued)
Fault Diagnosis Methods
Methods for diagnosing compressor and valve malfunctions.
Technical Data
Thermostat Characteristics and Capacity Charts
Graphs showing thermostat settings vs. temperatures and capacity tables.
CS-A181K/CU-A181K Performance Graphs
Performance graphs for CS-A181K/CU-A181K models.
Technical Data (Continued)
Sensible Capacity Charts Continued
More tables detailing sensible capacity under various conditions.
Technical Data (Continued)
CS-A181K/CU-A181K Operation Characteristics
Performance graphs vs. temp and piping length for CS-A181K/CU-A181K.
Technical Data (Continued)
CS-A241K/CU-A241K Operation Characteristics
Performance graphs vs. temp and piping length for CS-A241K/CU-A241K.
Exploded View
Indoor Unit Component Breakdown
Diagram showing internal parts of the indoor unit.
Replacement Parts List
Indoor Unit Replacement Parts
List of replacement parts for the indoor unit.
Exploded View (Continued)
Outdoor Unit Component Breakdown
Diagram showing internal parts of the outdoor unit.
Replacement Parts List (Continued)
Outdoor Unit Replacement Parts
List of replacement parts for the outdoor unit.
Electronic Parts List
Indoor Controller Electronic Components
List of electronic components for the indoor controller.
Electronic Parts List (Continued)
Outdoor Controller Electronic Components
List of electronic components for the outdoor controller.
Electronic Circuit Diagrams
Circuit Schematics and Component Data
Detailed electronic circuit diagrams and related data.
Electronic Circuit Diagram Usage Guide
Interpreting Diagrams, Symbols, and Timers
Instructions for understanding circuit diagrams and associated data.
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