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Mitsubishi Electric Mr.Slim MUZ-FE NA Series User Manual

Mitsubishi Electric Mr.Slim MUZ-FE NA Series
44 pages
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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES
·······································
2
2. PART NAMES AND FUNCTIONS ····················· 3
3. SPECIFICATION ················································ 5
4. OUTLINES AND DIMENSIONS ························ 6
5. WIRING DIAGRAM ············································ 7
6. REFRIGERANT SYSTEM DIAGRAM ··············· 9
7. SERVICE FUNCTIONS ··································· 10
8. MICROPROCESSOR CONTROL ··················· 12
9. TROUBLESHOOTING ····································· 22
10. DISASSEMBLY INSTRUCTIONS ···················· 36
MSZ-FE09NA
MSZ-FE12NA
MSZ-FE18NA
SPLIT-TYPE AIR CONDITIONERS
INDOOR UNIT
Outdoor unit service manual
MUZ-FENA Series (OBH543)
MXZ-A·NA Series (OB444)
MXZ-B·NA Series (OB560)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
PARTS CATALOG (OBB542)
Models
MSZ-FE09NA
MSZ-FE12NA
No. OBH542
REVISED EDITION-B
MSZ-FE09NA -
8
MSZ-FE12NA -
8
Revision B:
• MSZ-FE09NA -
8
and MSZ-FE12NA -
8
have
been added.
Please void OBH542 REVISED EDITION-A.
MITSUBISHI
ELECTRIC
Changes
for
the
Better
D
CJ
CJ
D
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Mitsubishi Electric Mr.Slim MUZ-FE NA Series Specifications

General IconGeneral
BrandMitsubishi Electric
ModelMr.Slim MUZ-FE NA Series
CategoryAir Conditioner
LanguageEnglish

Summary

Technical Changes

Overview of Revisions

Details revisions and new model additions to the service manual.

Part Names and Functions

Indoor Unit Component Identification

Identifies key internal and external components of the indoor unit.

Accessories List

Lists included accessories for the indoor units.

Specifications

Performance Specifications

Lists detailed electrical and performance specifications for indoor units.

Operating Range

Defines acceptable operational temperature and humidity limits.

Air Speed and Coverage Data

Provides airflow volume and reach performance data for models.

Outlines and Dimensions

Unit Dimensions MSZ-FE09/12NA

Provides dimensional drawings for MSZ-FE09NA and MSZ-FE12NA models.

Unit Dimensions MSZ-FE18NA

Provides dimensional drawings for the MSZ-FE18NA model.

Wiring Diagram

Indoor Unit Wiring

Illustrates electrical connections and component layout for indoor units.

Refrigerant System Diagram

Refrigerant Flow and Components

Shows the refrigerant circuit and thermistor locations.

Service Functions

Service Function Modes

Details timer short mode and PC board modification for operation.

Auto Restart Function

Explains the automatic restart feature and how to release it.

Remote Controller Settings

Guides on setting the remote controller slide switch for unit position.

Microprocessor Control

Wireless Remote Controller

Explains remote control layout, buttons, and basic functions.

Operation Modes

Covers COOL, DRY, HEAT, AUTO, VANE, i-see, AREA operations.

Timer and Special Operations

Details timer, emergency, and temperature indication functions.

Troubleshooting

Troubleshooting Preparation

Outlines safety checks, battery replacement, and general troubleshooting steps.

Failure Mode Identification

Explains how to identify and recall unit abnormal conditions via LED indicators.

Diagnostic Flowcharts and Tables

Provides step-by-step guides and tables for diagnosing faults.

Component Testing and Specifications

Details test points, voltages, and resistance values for key parts.

Disassembly Instructions

MSZ-FE09NA/MSZ-FE12NA Disassembly

Step-by-step guide for removing panels and internal components.

MSZ-FE18NA Disassembly

Step-by-step guide for removing panels and internal components.

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