Panasonic CS-A90KE - User Manual

Panasonic
ORDER NO. MAC9509078C2
Service Manual
Room Air Conditioners
CS-A70KE / CU-A70KE
CS-A90KE / CU-A9S0KE
CS-A120KE / CU-A120KE
Contents
@: FOATULOS iii eistivenisayedccates eakeetiiases lediarteenieatees 1
@ FUNCTIONS «2.2... cee ceccceeeeeeceeeeseeeseeeeeeeueaeanaes 2-4
e Product Specification ............cceeeee 5-10
@ DIMENSIONS .00.... eee e cece cece ccccecsseeeeeeeeeees 11-12
e Refrigeration Cycle Diagram .............: eee 13
@ Block Diagram ...........cccccccccccessssseeseeeeteeeeneeetes 14
@ WINING DIAGIEO oaccicdisssncetcoagetannetora cases 15-16
e Operation Details «0.0.0.0... cccseeeeeeeees 17-27
e Installation Information... ee 28 - 29
e 2-way, 3-way VAIVES ........ cece reer 30 - 36
e Servicing Information ............. cee eee 37-40
e Troubleshooting Guide ............cceeee 41-42
@ Technical Data sinicccionsccersaicoeatishean leas 43-46
e Exploded View .............ccecseeceeesereseereeeeeees 47,49
e Replacement Part Lists ............... eee 48, 50
e Electronic Parts Lists .............c:c.ccccceceeeeeeen 51
© 1995 Matsushita Air-Conditioning Corp. Sdn. Bhd.
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.

Panasonic CS-A90KE Specifications

General

Power Supply	220-240V, 50Hz
Weight (Indoor Unit)	9 kg
Cooling Capacity	9, 000 BTU/h
Energy Efficiency Ratio (EER)	3.21
Indoor Unit Dimensions (W x H x D)	290
Outdoor Unit Dimensions (W x H x D)	780 x 540
Operating Temperature (Cooling)	43 °C

Summary

Features

Functions - Remote Control & Settings

Product Specifications - General

Capacity, Air Volume, and Noise

Cooling/heating capacity, air volume, and noise levels.

Electrical Data and Dimensions

Product Specifications - CS-A90 KE;CU-A90 KE

Product Specifications - CS-A120 KE;CU-A120 KE

Capacity, Electrical, and Dimensions

Refrigeration Cycle Diagram

Model Specific Cycle Diagrams

Diagrams illustrating the refrigeration cycle for different model series.

Block Diagram

Model Block Diagrams

Block diagrams for CS/CU-A70KE, A90KE, and A120KE models.

Indoor;Outdoor Unit Circuit Blocks

Wiring Diagram - CS;CU-A70 KE

CS-A70 KE;CU-A70 KE Wiring Diagram

Complete wiring diagram for CS-A70KE and CU-A70KE units.

Wiring Diagram - CS;CU-A90 KE;A120 KE

CS-A90 KE;A120 KE Wiring Diagram

Wiring diagrams for CS-A90KE/CU-A90KE and CS-A120KE/CU-A120KE units.

Operation Details - Cooling Mode

Cooling Mode Overview

Cooling Safety Controls

Installation Information - Location and Accessories

Installation Location Guidelines

Installation Information - Diagram and Procedures

Unit Installation Diagram

Diagram showing physical placement and connections of indoor and outdoor units.

2-way & 3-way Valve Usage

Valve Operation for Different Works

Refrigerant Handling - Installation Evacuation

Installation Evacuation Procedure

Step-by-step instructions for air evacuation during installation.

Refrigerant Handling - Pumping Down

Refrigerant Pumping Down Steps

Step-by-step instructions for pumping down refrigerant.

Refrigerant Handling - Re-installation Evacuation

Re-installation Evacuation Procedure

Step-by-step instructions for air evacuation during re-installation.

Gas Leakage Caution

Refrigerant Handling - Balancing and Charging

Balancing Low Refrigerant

Procedure for balancing refrigerant when levels are low.

Refrigerant Charging Procedure

Step-by-step instructions for charging refrigerant.

Refrigerant Handling - Evacuation (No Refrigerant)

Evacuation Procedure

Step-by-step instructions for evacuating a system with no refrigerant.

Gas Charging Procedure

Gas Charging Steps

Step-by-step instructions for charging refrigerant after evacuation.

Servicing Information - Indoor Unit

Indoor Controller Inspection

Points to inspect on the indoor electronic control board.

Indoor Fan Motor Removal

Step-by-step guide for removing the indoor fan motor.

Servicing Information - Fan Motor and Outdoor Unit

Fan Motor Installation

Instructions for correctly installing the indoor fan motor.

Outdoor Unit Servicing Access

Servicing Information - Control Reset and Code

Cross Flow Fan Removal

Procedure for removing the cross-flow fan.

Troubleshooting Guide - Refrigeration Cycle

Refrigeration Cycle Diagnosis

Diagnosing malfunctions related to the refrigeration cycle.

Standard Operating Values

Troubleshooting Guide - Compressor and Valve Issues

Pressure;Current Relationship

Correlation between operating conditions and system parameters.

Compressor;Valve Malfunction Diagnosis

Methods for diagnosing compressor and 4-way valve malfunctions.

Technical Data - Thermostat Characteristics

Thermostat Settings Graphs

Exploded View - Indoor Unit

Indoor Unit Component Diagram

Replacement Parts List - Indoor Unit

Indoor Unit Parts List

Exploded View - Outdoor Unit

Outdoor Unit Component Diagram

Replacement Parts List - Outdoor Unit

Outdoor Unit Parts List

Electronic Parts List

Electronic Component Details

Supplement - Wiring Diagram Updates

Revised Wiring Diagram (CS-A90 KE;A120 KE)

Revised wiring diagram for CS-A90KE/A120KE models.

Supplement - New Wiring Diagram Updates

New Wiring Diagram (CS-A90 KE;A120 KE)

New wiring diagram for CS-A90KE/A120KE models.

Supplement - New Wiring Diagram (CS-A70 KE)

New Wiring Diagram (CS-A70 KE;CU-A70 KE)

New wiring diagram for CS-A70KE/CU-A70KE models.