Mitsubishi Electric MUZ-GE15NAH2 User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 6
4. OUTLINES AND DIMENSIONS ······················ 10
5. WIRING DIAGRAM ·········································· 13
6. REFRIGERANT SYSTEM DIAGRAM ············· 25
7. DATA ································································ 28
8. ACTUATOR CONTROL ··································· 42
9. SERVICE FUNCTIONS ··································· 43
10. TROUBLESHOOTING ····································· 44
11. DISASSEMBLY INSTRUCTIONS ···················· 64
Models
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
Indoor unit service manual
MSZ-GE•NA MSY-GE•NA Series (OBH548)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
HFC
utilized
R410A
No. OBH549
REVISED EDITION-F
PARTS CATALOG (OBB549)
Please void OBH549 REVISED EDITION-E.
MUZ-GE09NA/NA2
MUZ-GE12NA/NA2
MUZ-GE15NA, -
1
/NA2
MUZ-GE09NA
MUZ-GE09NA2
MUZ-GE12NA
MUZ-GE12NA2
MUZ-GE15NA,
-
1
MUZ-GE15NA2
MUZ-GE18NA,
-
1
MUZ-GE24NA
Revision F:
• MUZ-GE09/12/15NA2, MUZ-GE09/12/15NAH2
and MUY-GE09/12/15NA2 have been added.
MUZ-GE09NAH
MUZ-GE09NAH2
MUZ-GE12NAH
MUZ-GE12NAH2
MUZ-GE15NAH
MUZ-GE15NAH2
MUZ-GE18NAH
MUY-GE09NA/NA2
MUY-GE12NA/NA2
MUY-GE15NA, -
1
/NA2
TM
MUY-GE18NA,
-
1
MUY-GE24NA
MUY-GE09NA
MUY-GE09NA2
MUY-GE12NA
MUY-GE12NA2
MUY-GE15NA,
-
1
MUY-GE15NA2
MUZ-GE09NAH/NAH2
MUZ-GE12NAH/NAH2
MUZ-GE15NAH/NAH2

Mitsubishi Electric MUZ-GE15NAH2 Specifications

General

Brand	Mitsubishi Electric
Model	MUZ-GE15NAH2
Category	Air Conditioner
Language	English

Summary

Outdoor Unit Service Manual

Use the Specified Refrigerant Only

Warning about using only the specified refrigerant for safety and unit longevity.

Specification

Lists the detailed technical specifications and ratings for the outdoor units.

Outlines and Dimensions

Provides overall dimensions and required installation clearances for the outdoor units.

Wiring Diagram

Illustrates the electrical connections and wiring layout for the outdoor units.

Refrigerant System Diagram

Shows the flow of refrigerant through the system components.

Data

Presents performance data, curves, and operating conditions for cooling and heating.

Troubleshooting

Failure Mode Recall Function

Procedures for recalling and interpreting error codes indicated by the unit's lamps.

Outdoor Unit Failure Mode Table

Lists specific failure modes, LED indications, conditions, and remedies for outdoor unit faults.

Troubleshooting Check Table

A comprehensive table correlating symptoms, LED indications, and troubleshooting steps.

Trouble Criterion of Main Parts

Provides resistance and voltage criteria for testing key components like thermistors, compressor, and motors.

Troubleshooting Flow

Step-by-step diagnostic flows for common issues like compressor, thermistor, and power supply problems.

Check of power supply

Check of inverter P.C. board

Test Point Diagram and Voltage

Disassembly Instructions

Removing the inverter assembly, inverter P.C. board

Removing the compressor and 4-way valve