Panasonic CU-A120KE 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 CU-A120KE Specifications

General

Type	Split System
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Heating Capacity	4.00 kW
Outdoor Unit Dimensions (W x H x D)	780 x 540 x 285 mm

Summary

Functions

Product Specifications

General and Electrical Specifications

Model Specific Specifications (A90KE/A120KE)

Technical details for the CS-A90KE/CU-A90KE and CS-A120KE/CU-A120KE models.

Refrigeration Cycle Diagram

Block Diagram

Wiring Diagram

CS-A70KE / CU-A70KE Wiring Diagram

Detailed electrical wiring schematic for the CS/CU-A70KE models.

CS-A90KE / CU-A90KE Wiring Diagram

Detailed electrical wiring schematic for the CS/CU-A90KE models.

CS-A120KE / CU-A120KE Wiring Diagram

Detailed electrical wiring schematic for the CS/CU-A120KE models.

Operation Details

Cooling, Dry, and Heating Modes

Installation Information

Evacuation of Installation

Servicing Information

Indoor Unit Component Servicing

Procedures for inspecting and removing indoor unit parts like controller and fan motor.

Outdoor Unit and Remote Control Servicing

Troubleshooting Guide

Refrigeration Cycle Diagnosis

How to diagnose issues using pressure, temperature, and air measurements.

Condition vs. Pressure and Current

Compressor and 4-Way Valve Faults

Methods for diagnosing compressor and 4-way valve malfunctions.

Technical Data

Thermostat Characteristics

Operation and Piping Characteristics

Replacement Parts List

Replacement Parts List (Indoor Unit)

List of replaceable parts for indoor units with model numbers and remarks.

Replacement Parts List (Outdoor Unit)

List of replaceable parts for outdoor units with model numbers and remarks.

Electronic Parts List

Electronic Circuit Diagram

Circuit Diagram Overview and Usage