Panasonic CS-MA120KE User Manual

Service Manual
Multi-Split Air Conditioners
Contents
● Features ..........................................................1
● Functions ...................................................2 – 4
● Product Specifications .............................5 – 10
● Dimensions ............................................11 – 12
● Refrigeration Cycle Diagram .........................13
● Block Diagram ............................................... 14
● Wiring Diagram ...................................... 15 – 16
● Operation Details ...................................17 – 27
● Installation Information ..........................28 – 29
● 2-way, 3-way Valves..............................30 – 36
● Servicing Information .............................37 – 40
● Troubleshooting Guide ..........................41 – 42
● Technical Data.......................................43 – 46
● Exploded View .............................47, 49, 51, 53
● Replacement Parts List ...............48, 50, 52, 54
● Electronic Parts List .......................................55
ORDER NO. MAC9611042C2
CS-MA90KE / CU-MA180KE
CS-MA120KE / CU-MA240KE
CS-MA70KE / CU-MA190KE
CS-MA120KE
 1996 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T)
All rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
Untitled-1 6/30/00, 7:44 AM1

Panasonic CS-MA120KE Specifications

General

Brand	Panasonic
Model	CS-MA120KE
Category	Air Conditioner
Language	English

Summary

Functions

Remote Control Functions

Details operation modes, fan speed, airflow control, and timer settings via remote.

Indoor Unit Functions

Explains unit controls, operation modes, safety, and fan speed.

Product Specifications

Wiring Diagram

Operation Details

Cooling Mode Operation

Explains time delay, time saved, anti-freezing, compressor protection, and reverse rotation controls.

Soft Dry Mode Operation

Details operation, time delay, anti-freezing, compressor protection, and fan speed for Soft Dry mode.

Heating Mode Operation

Covers time delay, overload protection, compressor reverse rotation, 4-way valve, and hot start controls.

Deicing Control

Explains normal and overload deicing procedures to prevent outdoor heat exchanger frosting.

Automatic Mode Operation

Describes the standard for determining operation mode based on intake air temperature.

Sleep Mode Auto Operation

Auto Restart Control

Installation Information

Best Location Selection

Outdoor Unit Installation Guidelines

Valve Operations

Evacuation Procedure

Pumping Down Procedure

Re-installation Evacuation

Refrigerant Balancing

Evacuation Process

Gas Charging Procedure

Servicing Information

Indoor Electronic Controller Inspection

Indoor Fan Motor Removal

Troubleshooting Guide

Refrigeration Cycle Troubleshooting

Diagnosing issues based on pressure, air temperature, and current measurements.

AC Condition vs. Pressure/Current

Relates operating conditions to pressure and electric current readings for fault diagnosis.

Compressor and 4-Way Valve Fault Diagnosis

Methods to diagnose compressor and 4-way valve malfunctions based on symptoms.

Replacement Parts List

Parts List: CS-MA70KE/CS-MA120KE

Parts List: CU-MA190KE

Parts List: CU-MA180KE/CU-MA240KE

Electronic Parts List