Mitsubishi Electric MXZ-3C24NA2 User Manual

PARTS CATALOG (OBB702)
SERVICE MANUAL
OUTDOOR UNIT
Models
MXZ-2C20NA2 -
U1
,
U4
MXZ-2C20NAHZ
MXZ-2C20NA3
-
U1
MXZ-2C20NAHZ2 -
U1
MXZ-2C20NA4 -
U1
MXZ-2C20NAHZ3 -
U1
MXZ-3C24NA MXZ-2C20NAHZ4 -
U1
MXZ-3C24NA2 -
U1
MXZ-3C24NAHZ
MXZ-3C24NA3
-
U1
MXZ-3C24NAHZ2 -
U1
MXZ-3C24NA4 -
U1
MXZ-3C24NAHZ3 -
U1
MXZ-3C30NA MXZ-3C24NAHZ4 -
U1
MXZ-3C30NA2 -
U1
MXZ-3C30NAHZ
MXZ-3C30NA3
-
U1
MXZ-3C30NAHZ2 -
U1
MXZ-3C30NA4 -
U1
MXZ-3C30NAHZ3 -
U1
MXZ-4C36NA MXZ-3C30NAHZ4 -
U1
MXZ-4C36NA2 -
U1
MXZ-4C36NA3 -
U1
MXZ-4C36NA4 -
U1
MXZ-5C42NA
MXZ-5C42NA2
-
U1
MXZ-5C42NA3 -
U1
MXZ-5C42NA4 -
U1
No. OBH702
REVISED EDITION-N
Indoor unit service manual
MSZ-FE·NA Series (OBH542)
MSZ-FH·NA Series (OBH683)
MSZ-GE·NA Series (OBH548)
MSZ-GL·NA Series (OBH732)
MSZ-EF·NA Series (OBH736)
MSZ-FS·NA Series (OBH872)
MFZ-KA·NA Series (OBH568)
MFZ-KJ·NA Series (OBH752)
SLZ-KA·NA Series (OCH487)
SLZ-KF·NA.TH Series (OCH669)
PLA-A·BA Series (OCH420)
PLA-A·EA Series (OCH640)
SEZ-KD·NA Series
PEAD-A·AA Series
PCA-A·KA Series (OCH455)
MVZ-A·AA Series
SVZ-KP·NA Series (MD-1404-K019)
CONTENTS
• INDOOR / OUTDOOR UNIT
COMPATIBILITY TABLE ······················4
1. TECHNICAL CHANGES ······························8
2. SAFETY PRECAUTION ·······························9
3. PART NAMES AND FUNCTIONS ················13
4. SPECIFICATION ······································ 14
5. NOISE CRITERIA CURVES ························30
6. OUTLINES AND DIMENSIONS ··················· 33
7. WIRING DIAGRAM ··································· 39
8. REFRIGERANT SYSTEM DIAGRAM ··········· 62
9. DATA ······················································ 75
10. ACTUATOR CONTROL ··························· 106
11. SERVICE FUNCTIONS ···························· 107
12. TROUBLESHOOTING ······························110
13. DISASSEMBLY INSTRUCTIONS ··············· 141
HFC
utilized
R410A
Revision N:
• 4. SPECIFICATION and 8. REFRIGERANT
SYSTEM DIAGRAM have been corrected.
OBH702 REVISED EDITION-M is void.
MXZ-3C24NA MXZ-3C30NA MXZ-4C36NA
MXZ-3C24NA2 MXZ-3C30NA2 MXZ-4C36NA2
MXZ-3C24NA3 MXZ-3C30NA3 MXZ-4C36NA3
MXZ-3C24NA4 MXZ-3C30NA4 MXZ-4C36NA4

Mitsubishi Electric MXZ-3C24NA2 Specifications

General

Brand	Mitsubishi Electric
Model	MXZ-3C24NA2
Category	Air Conditioner
Language	English

Summary

1. TECHNICAL CHANGES

2. SAFETY PRECAUTION

2-1. ALWAYS OBSERVE FOR SAFETY

Provides general safety guidelines to follow before and during repair services.

2-2. CAUTIONS RELATED TO R410A REFRIGERANT

Details specific safety measures and considerations when working with R410A refrigerant.

2-3. Cautions for Refrigerant Piping Work

Provides guidelines and precautions for performing refrigerant piping work safely and correctly.

4. SPECIFICATION

MXZ-2C20NA2/NA3 Specifications

MXZ-2C20NA4 Specifications

MXZ-3C24NA/NA2/NA3 Specifications

7. WIRING DIAGRAM

MXZ-2C20NA2 Wiring Diagram

Presents the wiring diagram for the MXZ-2C20NA2 outdoor unit, detailing component connections.

MXZ-2C20NA3 Wiring Diagram

Provides the wiring diagram for the MXZ-2C20NA3 outdoor unit, showing electrical connections.

MXZ-2C20NA4 Wiring Diagram

Displays the wiring diagram for the MXZ-2C20NA4 outdoor unit and its electrical layout.

8. REFRIGERANT SYSTEM DIAGRAM

MXZ-2C20 Series Refrigerant Diagram

Illustrates the refrigerant flow and components for MXZ-2C20 series outdoor units.

MXZ-3C24/3C30 Series Refrigerant Diagram

Shows the refrigerant system for MXZ-3C24/3C30 series outdoor units, detailing flow and components.

MXZ-4C36 Series Refrigerant Diagram

Depicts the refrigerant system for MXZ-4C36 series outdoor units, including flow and component layout.

9. DATA

MXZ-2C20 Series Specifications Data

MXZ-3C24 Series Specifications Data

MXZ-3C30 Series Specifications Data

11. SERVICE FUNCTIONS

11-1. PRE-HEAT CONTROL

Explains the pre-heat control function to prevent compressor issues and how to deactivate it.

11-2. AUTO LINE CORRECTING

Describes the auto line correcting function for wiring/piping detection and correction.

11-3. CHANGING REFRIGERANT EVAPORATING TEMPERATURE

12. TROUBLESHOOTING

12-1. CAUTIONS ON TROUBLESHOOTING

12-2. FAILURE MODE RECALL FUNCTION

12-3. TROUBLESHOOTING INSTRUCTION FLOWCHART

12-4. TROUBLESHOOTING CHECK TABLE

A comprehensive table detailing symptoms, abnormal points, LED indications, conditions, and remedies.

13. DISASSEMBLY INSTRUCTIONS

13-1. MXZ-2C20 Series Disassembly

13-2. MXZ-3C24/3C30/4C36 Series Disassembly

13-3. MXZ-5C42NA and HZ Series Disassembly