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Mitsubishi Electric MSH12TN User Manual

Mitsubishi Electric MSH12TN
129 pages
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SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. FEATURES·························································2
2. TECHNICAL CHANGES ····································5
3. PART NAMES AND FUNCTIONS······················7
4. INDOOR UNIT COMBINATION························10
5. SPECIFICATION···············································11
6. DATA·································································17
7. OUTLINES AND DIMENSIONS ·······················39
8. WIRING DIAGRAM ··········································43
9. REFRIGERANT SYSTEM DIAGRAM··············51
10. MICROPROCESSOR CONTROL ····················54
11. SERVICE FUNCTIONS·····································72
12. TROUBLESHOOTING······································75
13. DISASSEMBLY INSTRUCTIONS···················101
14. PARTS LIST····················································114
15. OPTIONAL PARTS·········································126
Wireless type
Models
MSH09TW · MUH09TW
MSH12TN · MUH12TN
MSH15TN · MUH15TN
MSH17TN · MUH17TN
MSH09TW
-
· MUH09TW
-
MSH12TN
-
· MUH12TN
-
· MUH12TN
-
MSH15TN
-
· MUH15TN
-
· MUH15TN
-
MSH17TN
-
· MUH17TN
-
U1U1
U2
U1U1
U2
U1U1
U1U1
No. OB275
REVISED EDITION-D
The Slim Line.
From Mitsubishi Electric.
L
I
S
T
E
D
CUS
MSH12TN
MSH15TN
MSH17TN
INDOOR UNIT
MUH15TN
OUTDOOR UNIT
Remote
controller
MSH12TN -
MSH15TN -
MSH17TN -
U1
U1
U1
MUH15TN - MUH15TN -
U2U1
TM
Inverter-controlled multi system Model
· MXZ30TN
· MXZ30TN2
Revision:
MUH12TN- has been added.
MUH15TN- has been added.
REFRIGERANT SYSTEM DIAGRAM of
MXZ30TN and MXZ30TN2 has partly been
changed.
PARTS LIST of MXZ30TN and MXZ30TN2
has partly been changed
Please void OB275 Revised edition-C.
U2
U2
Indication of
model name
Indication of
model name
OB275--1.qxp 03.12.2 16:49 Page 1

Table of Contents

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Mitsubishi Electric MSH12TN Specifications

General IconGeneral
BrandMitsubishi Electric
ModelMSH12TN
CategoryAir Conditioner
LanguageEnglish

Summary

Features

Technical Changes

Part Names and Functions

Indoor Unit Components

Identifies parts of the indoor unit and accessories.

Outdoor Unit Components

Identifies parts of the outdoor unit.

Remote Controller Overview

Identifies parts and functions of the wireless remote controller.

Indoor Units Combination

Specifications

Unit Specifications and Operating Range

Details technical specifications and operational limits for various unit models.

Refrigerant Piping and Dimensions

Specifies maximum refrigerant pipe lengths and unit dimensions.

Data

Performance Data and Curves

Presents performance data, curves, and operational ranges for cooling and heating.

Standard Operation and System Data

Lists standard operational data and system-specific parameters.

Outlines and Dimensions

Indoor Unit Dimensions and Space Requirements

Shows dimensions and clearance needed for indoor units.

Outdoor Unit Dimensions and Space Requirements

Shows dimensions and clearance needed for outdoor units.

Wiring Diagram

Model-Specific Wiring Diagrams

Provides wiring diagrams for different indoor and outdoor unit models.

Refrigerant System Diagram

System Diagrams by Model

Illustrates refrigerant flow for various indoor/outdoor unit combinations.

Microprocessor Control

Remote Controller and Display Functions

Describes the wireless remote and indoor unit display operations.

Operation Modes and Controls

Explains I FEEL CONTROL, COOL, DRY, HEAT modes, and fan/vane controls.

System Control Features

Covers inverter control, power supply, voltage, LEV, and operational parameters.

Service Functions

Defrost Control and Modifications

Details compulsory defrost, changing defrost settings, and timer modifications.

System Setup and Restart Functions

Covers PC board modifications and auto-restart function setup.

Troubleshooting

Troubleshooting Procedures and Cautions

Provides general guidance, safety precautions, and initial checks for troubleshooting.

Troubleshooting Flowcharts and Symptom Analysis

Offers diagnostic flowcharts and analysis of common symptoms.

Component-Specific Troubleshooting Checks

Details checks for various components like motors, sensors, and boards.

Disassembly Instructions

Indoor Unit Disassembly Steps

Provides step-by-step instructions for disassembling indoor unit components.

Outdoor Unit Disassembly Steps

Provides step-by-step instructions for disassembling outdoor unit components.

Parts List

Indoor Unit Parts List

Lists structural, electrical, and functional parts for indoor units.

Outdoor Unit Parts List

Lists structural, electrical, and functional parts for outdoor units.

Accessories and Remote Controller Parts

Lists accessories and remote controller components.

Optional Parts

Optional Accessories and Filters

Details optional refrigerant pipes, air cleaning filters, and deodorizing filters.

Different-Diameter Pipe Options

Lists options for connecting pipes with different diameters.

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