Mitsubishi Electric NTXMSH48A182BA User Manual

TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT
No. OCHT810
REVISED EDITION-A
HFC
utilized
R410A
September 2023
Note:
•
Specifications have been
changed in REVISED
EDITION-A.
Model name
indication
PARTS CATALOG (OCBT810)
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
<Outdoor unit>
[Model Name]
NTXMSM36A142BA
NTXMSM48A182BA
NTXMSM60A182BA
NTXMSH36A142BA
NTXMSH42A152BA
NTXMSH48A182BA
OCHT810 is void.

Mitsubishi Electric NTXMSH48A182BA Specifications

General

Brand	Mitsubishi Electric
Model	NTXMSH48A182BA
Category	Air Conditioner
Language	English

Summary

SAFETY PRECAUTION

ALWAYS OBSERVE FOR SAFETY

Essential safety rules before accessing the unit or performing work.

CAUTIONS RELATED TO NEW REFRIGERANT

Specific precautions for handling R410A refrigerant and related tools.

OVERVIEW OF UNITS

SYSTEM CONSTRUCTION

Details on connectable indoor units and system capacity for different outdoor units.

SYSTEM SPECIFICATIONS

Outdoor unit specifications, including model naming and capacity classes.

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

TRANSMISSION SYSTEM SETUP

TROUBLESHOOTING

CHECKPOINTS FOR TEST RUN

Procedures and checks to perform before and during unit test runs.

Countermeasures For Error During Test Run

Table of error codes, detected units, and corresponding countermeasures.

HOW TO CHECK PARTS

HOW TO CHECK COMPONENTS

ELECTRICAL WIRING

WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY

REFRIGERANT PIPING TASKS

REFRIGERANT PIPING SYSTEM

Guidelines for refrigerant piping, including diameter selection and lengths.

PRECAUTIONS AGAINST REFRIGERANT LEAKAGE

Safety measures to prevent and handle refrigerant leakage based on concentration limits.

REMOTE CONTROLLER

ERROR INFORMATION

How to view and reset error information displayed on the remote controller.

TEST RUN

ERROR HISTORY

How to view and delete error history records from the remote controller.

SELF-DIAGNOSIS

Procedures for performing self-diagnosis and resetting errors using the remote controller.