Mitsubishi Electric NTXMSM36A142BA - 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.

Summary

SAFETY PRECAUTION

ALWAYS OBSERVE FOR SAFETY

General safety rules to observe before performing maintenance or accessing electrical components.

CAUTIONS RELATED TO NEW REFRIGERANT

Specific safety precautions for handling R410A refrigerant and associated equipment.

OVERVIEW OF UNITS

Auxiliary HEATING ON;OFF CONTROL SET-UP

Instructions for configuring the auxiliary heating function and related settings.

DATA

SELECTION OF COOLING;HEATING UNITS

Flowchart to determine and select appropriate unit capacities for cooling and heating.

WIRING DIAGRAM

MODEL SELECTION

Guidance on setting model selection switches on the unit.

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

TRANSMISSION SYSTEM SETUP

Guidelines and diagrams for setting up the transmission system wiring.

TROUBLESHOOTING

CHECKPOINTS FOR TEST RUN

Essential checks and procedures to perform before conducting a system test run.

Countermeasures For Error During Test Run

Explanations of error codes and corresponding corrective actions.

SELF-DIAGNOSIS ACTION BY FLOWCHART

Step-by-step flowcharts for diagnosing system faults.

ELECTRICAL WIRING

OVERVIEW OF POWER WIRING

General principles and considerations for power wiring.

WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY

Details concerning wiring for main power supply and equipment capacity.

WIRING TRANSMISSION CABLES

Information on the types and specifications of transmission cables.

SYSTEM SWITCH SETTING

Procedures and guidelines for setting system switches.

REFRIGERANT PIPING TASKS

REFRIGERANT PIPING SYSTEM

Overview of the refrigerant piping system configuration.

Selecting the Refrigerant Branch Kit

Guidance on selecting the appropriate refrigerant branch kits.

Select Each Section of Refrigerant Piping

Instructions for selecting refrigerant piping for different system sections.

Additional refrigerant charge

Calculation methods and procedures for adding refrigerant.

DISASSEMBLY PROCEDURE

Removing the service panel and top panel

Steps to remove outer panels for accessing internal components.

Removing the fan motor (MF1, MF2)

Procedure for safely removing the fan motor assembly.

Removing the electrical parts box

Steps to remove the housing for electrical components.

Removing the compressor (MC)

Detailed steps for safely removing the compressor.

Removing the accumulator

Procedure for removing the accumulator component.

Changing the fusible plug

Instructions and precautions for replacing the fusible plug.

REMOTE CONTROLLER

REMOTE CONTROLLER FUNCTIONS

Explanation of remote controller features, buttons, and interface.

Display

Guide to understanding the remote controller's display icons and modes.

Menu structure

Navigation paths and structure of the remote controller menus.

ERROR INFORMATION

Instructions on how to view and interpret system error codes.

SERVICE MENU

Steps to access and utilize the service menu functions.

TEST RUN

Procedures for performing system test runs for diagnosis.

FUNCTION SETTING

How to configure various unit functions via the remote controller.

ERROR HISTORY

Methods for viewing and clearing system error logs.

SELF-DIAGNOSIS

Procedures for performing system self-diagnosis and interpreting results.

REMOTE CONTROLLER CHECK

Procedure for diagnosing the remote controller's functionality.

SMOOTH MAINTENANCE

Accessing and utilizing smooth maintenance data and features.

REQUEST CODE

Method for requesting and viewing specific operational data.

Mitsubishi Electric NTXMSM36A142BA Specifications