Table of Contents
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SPLIT-TYPE AIR CONDITIONERS
INDOOR UNIT
SERVICE MANUAL
Models
MSZ-FE09NA
MSZ-FE12NA
MSZ-FE18NA
MSZ-FE09NA
MSZ-FE12NA
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Revision B:
• MSZ-FE09NA -
been added.
Please void OBH542 REVISED EDITION-A.
MSZ-FE09NA
MSZ-FE12NA
CONTENTS
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
PARTS CATALOG (OBB542)
and MSZ-FE12NA -
8
No. OBH542
REVISED EDITION-B
-
8
-
8
Outdoor unit service manual
MUZ-FE•NA Series (OBH543)
MXZ-A·NA Series
(OB444)
MXZ-B·NA Series
(OB560)
·······································
have
8
2
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Table of Contents
Related Manuals for Mitsubishi Electric Mr.Slim MSZ-FE12NA
Summarization of Contents
INDOOR UNIT SERVICE MANUAL
Technical Changes and Revisions
Details updates, new model additions, and revisions made to the service manual.
Part Names and Functions Overview
Identifies and describes the various components and parts of the indoor unit.
Model Specifications and Ratings
Lists technical specifications, operating ranges, and performance data for different models.
Physical Dimensions and Installation
Provides physical dimensions, mounting hole details, and piping connection information.
Wiring Diagram and Electrical Connections
Illustrates the electrical circuit, component layout, and connection points.
Refrigerant System Diagram and Flow
Shows the refrigerant circuit, including pipes, sensors, and direction of flow.
Service Functions and Special Modes
Explains special operational modes for service, like timer modifications and board settings.
Microprocessor Control and Remote Operation
Details the functions and operation of the wireless remote controller and its interface.
Troubleshooting and Diagnostic Precautions
Provides general precautions and procedures for diagnosing and resolving unit issues.
Disassembly Instructions for Indoor Unit
Provides step-by-step instructions for disassembling the indoor unit.
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