Mitsubishi Electric MXZ-SM48NAMHZ2-U1 User Manual

TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT
No. OCH810
REVISED EDITION-A
HFC
utilized
R410A
September 2023
Note:
•
Specifications have
been changed in
REVISED EDITION-A.
<Outdoor unit>
[Model Name]
Model name
indication
PARTS CATALOG (OCB810)
MXZ-SM36NAM2
MXZ-SM48NAM2
MXZ-SM60NAM2
MXZ-SM36NAMHZ2
MXZ-SM42NAMHZ2
MXZ-SM48NAMHZ2
MXZ-SM36NAM2-U1
MXZ-SM48NAM2-U1
MXZ-SM60NAM2-U1
MXZ-SM36NAMHZ2-U1
MXZ-SM42NAMHZ2-U1
MXZ-SM48NAMHZ2-U1
[Service Ref.]
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. SAFETY PRECAUTION ·······················2
2. OVERVIEW OF UNITS ························5
3. SPECIFICATIONS ···························· 11
4. DATA ·············································· 14
5. OUTLINES AND DIMENSIONS ··········· 36
6. WIRING DIAGRAM ··························· 37
7. NECESSARY CONDITIONS
FOR SYSTEM CONSTRUCTION ········· 40
8. TROUBLESHOOTING ······················· 55
9. ELECTRICAL WIRING ·····················133
10. REFRIGERANT PIPING TASKS ·········139
11. DISASSEMBLY PROCEDURE ···········147
12. REMOTE CONTROLLER ··················168
OCH810 is void.

Mitsubishi Electric MXZ-SM48NAMHZ2-U1 Specifications

General

Series	MXZ
Type	Multi-Zone Heat Pump
Cooling Capacity	48, 000 BTU/h
Heating Capacity	54, 000 BTU/h
Refrigerant	R410A
Voltage	208/230V
Phase	Single
Number of Zones	Up to 8
Outdoor Unit Noise Level	55 dB(A)
Indoor Unit Dimensions (HxWxD)	Varies by indoor unit model
Indoor Unit Weight	Varies by indoor unit model
Compressor Type	Inverter-driven
Power Supply	Outdoor Unit
Indoor Unit Noise Level	19 dB(A)

Summary

SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT

Specific precautions for units utilizing refrigerant R410A.

Cautions for service

Cautions for refrigerant piping work

SPECIFICATIONS

WIRING DIAGRAM

TROUBLESHOOTING

Test Run Procedures and Checks

Steps and safety checks before and during unit test runs.

Error Code Countermeasures

A comprehensive list of error codes and their corresponding troubleshooting steps.

Self-Diagnosis and Flowcharts

Flowcharts for diagnosing common system errors like communication issues.

Component Testing Procedures

Guides for checking specific components like thermistors, sensors, and motors.

ELECTRICAL WIRING

REFRIGERANT PIPING TASKS

REFRIGERANT PIPING SYSTEM

PRECAUTIONS AGAINST REFRIGERANT LEAKAGE

Safety precautions and procedures for handling R410A refrigerant, focusing on leak prevention.

DISASSEMBLY PROCEDURE

Component Removal Procedures

Step-by-step instructions for removing various components from the outdoor unit.

REMOTE CONTROLLER

Troubleshooting and Error Handling

Procedures for diagnosing and handling errors, viewing history, and self-diagnosis.

Service and Maintenance Functions