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Mitsubishi Electric MU-09NV - E2 User Manual

Mitsubishi Electric MU-09NV - E2
64 pages
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SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································6
4. OUTLINES AND DIMENSIONS ·························9
5. WIRING DIAGRAM ··········································12
6. REFRIGERANT SYSTEM DIAGRAM··············20
7. PERFORMANCE CURVES······························24
8. MICROPROCESSOR CONTROL ····················27
9. SERVICE FUNCTIONS ····································34
10. TROUBLESHOOTING······································37
11. DISASSEMBLY INSTRUCTIONS·····················45
12. PARTS LIST······················································53
13. OPTIONAL PARTS···········································61
Wireless type
Models
MS-07NV -
(
WH
)
· MU-07NV -
MS-09NV -
(
WH
)
· MU-09NV -
MS-12NV -
(
WH
)
· MU-12NV -
MS-18NV -
(
WH
)
· MU-18NV -
MS-24NV -
(
WH
)
· MU-24NV -
MS-07NV -
(
WH
)
· MU-07NV -
MS-09NV -
(
WH
)
· MU-09NV -
MS-12NV -
(
WH
)
· MU-12NV -
MS-18NV -
(
WH
)
· MU-18NV -
MS-24NV -
(
WH
)
· MU-24NV -
MS-18NV -
(
WH
)
· MU-18NV -
E3E3
E2E2
E2E2
E2E2
E2E2
E2E2
E1E1
E1E1
E1E1
E1E1
E1E1
No. OB206
MS-18NV -
MS-24NV -
MS-18NV -
MS-24NV -
MS-18NV -
E3
E2
E2
E1
E1
This Servise Manual OB206 deals with MS-07/09/12/18/24NV-E1,
MU-07/09/12/18/24NV-E1, MS-18NV-E2, and MU-18NV-E2 in
OB175 THIRD EDITION issued in June in 1997.
Therfore, please refer to OB206, not to OB175 THIRD EDITION,
for the above models.
OB206t-1.qxp 25/9/97 6:42 PM Page 1

Questions and Answers:

Mitsubishi Electric MU-09NV - E2 Specifications

General IconGeneral
BrandMitsubishi Electric
ModelMU-09NV - E2
CategoryAir Conditioner
LanguageEnglish

Summary

Technical Changes

Part Names and Functions

Indoor Unit Components

Identifies and illustrates components of the indoor unit.

Outdoor Unit Components

Identifies and illustrates components of the outdoor unit.

Remote Controller Functions

Details the remote controller buttons and their functions for operation.

Specification

Outlines and Dimensions

Indoor Unit Dimensions

Provides dimensions and installation details for the indoor unit.

Outdoor Unit Dimensions

Provides dimensions and installation details for the outdoor unit.

Wiring Diagram

Indoor Unit Wiring

Shows the wiring diagram for the indoor unit.

Outdoor Unit Wiring

Shows the wiring diagram for the outdoor unit.

Refrigerant System Diagram

Indoor Unit Refrigerant System

Illustrates the refrigerant system for the indoor unit.

Outdoor Unit Refrigerant System

Illustrates the refrigerant system for the outdoor unit.

Refrigerant Specifications and Procedures

Maximum Refrigerant Piping Length

Details maximum refrigerant piping lengths and height differences.

Additional Refrigerant Charge

Provides guidelines for additional refrigerant charge based on piping length.

Evacuation Procedures (Air Purge)

Details the steps for evacuating the system and performing air purging.

Performance Curves

Performance Measurement Parameters

Lists voltage, airflow, and main readings for performance curve analysis.

Indoor Air Wet-Bulb Measurement

Step-by-step guide for measuring indoor air wet-bulb temperature difference.

Microprocessor Control

"I FEEL CONTROL" Operation

Explains how to use the "I FEEL CONTROL" mode via the remote.

Initial Set Temperature Determination

Details how initial set temperature is determined by room temperature.

TEMPERATURES Buttons Function

Explains the function of TEMPERATURES buttons and fuzzy control.

COOL Mode Operation

Describes the operation and coil frost prevention in COOL mode.

DRY Mode Operation

Describes the operation in DRY mode for humidity control.

COOL Mode Operation Steps

Details the steps for COOL mode operation.

DRY Mode Operation Steps

Details the steps for DRY mode operation.

FAN Mode Operation

Explains how to operate the unit in FAN mode.

FAN MOTOR CONTROL

Describes the fan motor control mechanism and protection.

AUTO VANE OPERATION

Explains the auto vane operation and its settings.

VANE POSITIONING AND AUTO MODE

Describes vane positioning and AUTO mode for optimal temperature distribution.

Dew Prevention and SWING Mode

Explains dew prevention and SWING mode features.

SLEEP MODE

Describes the SLEEP mode for quiet operation and reduced airflow.

TIMER OPERATION

Details how to set and cancel timer operations.

Service Functions

Timer Short Mode

Explains how to shorten timer settings for service purposes.

P.C. Board Modification for Individual Operation

Details P.C. board modification for multi-unit remote control.

Auto Restart Function

Troubleshooting

Service Cautions and Procedures

Lists precautions, general procedures, and battery replacement for troubleshooting.

Troubleshooting Flow and Symptom Analysis

Provides a troubleshooting flowchart, check table, and instructions for diagnosing issues.

Main Part Diagnosis Criteria

Lists criteria and methods to check main parts for faults.

Component Specific Checks

Detailed guides for checking specific components like fan motor, receiver, and boards.

Test Point Diagram and Voltage

Disassembly Instructions

Indoor Unit Disassembly (MS-07/09/12NV)

Instructions for disassembling the indoor unit for specific models.

Indoor Unit Disassembly (MS-18/24NV)

Instructions for disassembling the indoor unit for specific models.

Outdoor Unit Disassembly (MU-07/09NV)

Instructions for disassembling the outdoor unit for specific models.

Outdoor Unit Disassembly (MU-12NV)

Instructions for disassembling the outdoor unit for specific models.

Parts List

Indoor Unit Parts (MS-07/09/12NV)

Lists structural and heat exchanger parts for indoor units.

Indoor Unit Electrical Parts (MS-07/09/12NV)

Lists electrical parts for indoor units.

Outdoor Unit Parts (MU-07/09NV)

Lists structural and electrical parts for outdoor units.

Outdoor Unit Parts (MU-12NV)

Lists structural and electrical parts for outdoor units (MU-12NV models).

Indoor Unit Parts (MS-18/24NV)

Lists structural, heat exchanger, and electrical parts for indoor units.

Outdoor Unit Parts (MS-18/24NV)

Lists structural and electrical parts for outdoor units.

Optional Parts

Refrigerant Pipes

Details optional refrigerant pipes and their specifications.

Air Cleaning Filter

Deodorizing Filter

Describes the deodorizing filter, its function, and maintenance.

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