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Mitsubishi MU09NW - User Manual

Mitsubishi MU09NW
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SERVICE MANUAL
SPLIT-TYPE AIR CONDITIONERS
CONTENTS
1. FEATURES·························································3
2. TECHNICAL CHANGES ····································4
3. PART NAMES AND FUNCTIONS······················4
4. SPECIFICATIONS ··············································6
5. DATA···································································9
6. OUTLINES AND DIMENSIONS ·······················17
7. WIRING DIAGRAM ··········································19
8. REFRIGERANT SYSTEM DIAGRAM··············21
9. MICROPROCESSOR CONTROL ····················22
10. SERVICE FUNCTIONS·····································30
11. TROUBLESHOOTING······································31
12. DISASSEMBLY INSTRUCTIONS·····················39
13. PARTS LIST······················································47
14. OPTIONAL PARTS···········································55
Wireless type
Models
MS09NW
(WH)
· MU09NW
MS12NN
(WH)
· MU12NN
MS15NN
(WH)
· MU15NN
MS17NN
(WH)
· MU17NN
No. OB192
The Slim Line.
From Mitsubishi Electric.
L
I
S
T
E
D
R
MS12NN
MS15NN
MS17NN
INDOOR UNIT
MU12NN
MU15NN
MU17NN
OUTDOOR UNIT
Remote
controller
Refer to our Service Manual OB202 when the indoor unit is used in the multi-system operation.
Applied models are MS09NW and MS15NN.
OB192--1.qxp 23/6/97 11:44 PM Page 1
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Mitsubishi MU09NW Specifications

General IconGeneral
BrandMitsubishi
ModelMU09NW
CategoryAir Conditioner
LanguageEnglish

Summary

FEATURES

TECHNICAL CHANGES

MS09 EW MS09 NW

Details changes made from MS09EW to MS09NW models.

MS12 EN, MS15 EN MS12 NN, MS15 NN

Details changes made from MS12EN/MS15EN to MS12NN/MS15NN.

MS17 NN

Indicates the MS17NN as a new model introduction.

PART NAMES AND FUNCTIONS

REMOTE CONTROLLER

Identifies and describes the parts and functions of the remote controller.

SPECIFICATIONS

Operating Range

Lists the operating conditions and limits for cooling performance.

MAX. REFRIGERANT PIPING LENGTH

Specifies the maximum allowable lengths for refrigerant pipes by model.

MAX. HEIGHT DIFFERENCE

Defines the maximum allowable height difference between indoor and outdoor units.

DATA

PERFORMANCE DATA

Presents cooling capacity and related data for various models and conditions.

PERFORMANCE CURVE

Illustrates performance curves for cooling capacity and power consumption.

CONDENSING PRESSURE AND SUCTION PRESSURE

Shows pressure-temperature relationships for the MU09NW model.

STANDARD OPERATION DATA

Provides standard operational data for all models including electrical and refrigerant circuits.

OPERATING RANGE

Details guaranteed voltage and operating temperature conditions for the units.

OUTLET AIR SPEED AND COVERAGE RANGE

Lists airflow, speed, and coverage range for each model's outlet.

ADDITIONAL REFRIGERANT CHARGE (R-22(oz))

Specifies additional refrigerant charge based on piping length.

OUTLINES AND DIMENSIONS

MS09 NW

Provides dimensional drawings and specifications for the MS09NW indoor unit.

MS12 NN, MS15 NN, MS17 NN

Provides dimensional drawings for indoor units MS12NN, MS15NN, MS17NN.

WIRING DIAGRAM

MS09 NW

Shows the model wiring diagram for the MS09NW indoor and outdoor units.

MS12 NN, MS15 NN, MS17 NN

Shows wiring diagrams for indoor and outdoor units MS12NN, MS15NN, MS17NN.

REFRIGERANT SYSTEM DIAGRAM

MS09 NW; MU09 NW

Illustrates the refrigerant system for MS09NW/MU09NW models.

MS12 NN; MU12 NN, MS15 NN; MU15 NN, MS17 NN; MU17 NN

Illustrates the refrigerant system for MS12NN/MU12NN, MS15NN/MU15NN, MS17NN/MU17NN.

MICROPROCESSOR CONTROL

I FEEL CONTROL OPERATION

Explains the operation and settings for the "I FEEL CONTROL" feature.

TEMPERATURES buttons

Details how temperature buttons control settings in "I FEEL CONTROL" mode.

COOL OPERATION

Describes the steps and conditions for performing a cool operation.

DRY OPERATION

Explains the procedure and characteristics of the dry operation mode.

FAN OPERATION

Outlines how to operate the unit in fan-only mode.

FAN MOTOR CONTROL (MS09 NW only)

Details the rotational frequency feedback control for the MS09NW fan motor.

AUTO VANE OPERATION

Explains the operation and modes of the auto vane feature.

TIMER OPERATION

Guides on setting and cancelling timer operations for the air conditioner.

EMERGENCY-TEST OPERATION

Describes how to perform emergency and test operations for servicing.

SERVICE FUNCTIONS

AUTO RESTART FUNCTION

Explains the auto restart feature that restores operation after power interruption.

TIMER SHORT MODE

Details how to shorten timer settings for service purposes.

P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

Instructions for modifying PC boards for multi-unit operation.

TROUBLESHOOTING

Cautions on troubleshooting

Provides important precautions before starting troubleshooting procedures.

Instruction of troubleshooting

Offers guidance on general troubleshooting steps and indicators.

troubleshooting check table

A table that helps diagnose issues based on operation indicator flashes.

Trouble criterion of main parts

Lists criteria for identifying abnormal main parts like motors and thermistors.

Check of indoor fan motor

A flowchart for diagnosing and troubleshooting indoor fan motor issues.

Check of receiver P.C. board

A flowchart for troubleshooting remote controller reception issues.

Check of indoor electronic control P.C. board

A flowchart for diagnosing issues with the indoor control PC board.

Check of outdoor unit

A flowchart for troubleshooting issues with the compressor and outdoor fan.

TEST POINT DIAGRAM AND VOLTAGE

MS09 NW

Provides test point diagrams and voltage checks for the MS09NW indoor PC board.

MS12 NN, MS15 NN, MS17 NN

Provides test point diagrams for PC boards of MS12NN, MS15NN, MS17NN.

DISASSEMBLY INSTRUCTIONS

MS09 NW INDOOR UNIT

Step-by-step guide to disassembling the MS09NW indoor unit.

MS12 NN, MS15 NN, MS17 NN INDOOR UNIT

Instructions for disassembling indoor units MS12NN, MS15NN, MS17NN.

MU09 NW OUTDOOR UNIT

Guide on how to disassemble the MU09NW outdoor unit.

MU12 NN, MU15 NN, MU17 NN OUTDOOR UNIT

Instructions for disassembling outdoor units MU12NN, MU15NN, MU17NN.

PARTS LIST

INDOOR UNIT STRUCTURAL PARTS MS09 NW (WH)

Lists structural parts for the MS09NW indoor unit.

INDOOR UNIT HEAT EXCHANGER MS09 NW (WH)

Lists heat exchanger parts for the MS09NW indoor unit.

INDOOR UNIT ELECTRICAL PARTS MS09 NW (WH)

Lists electrical components for the MS09NW indoor unit.

OUTDOOR UNIT STRUCTURAL PARTS MU09 NW

Lists structural parts for the MU09NW outdoor unit.

OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS MU09 NW

Lists functional and electrical parts for the MU09NW outdoor unit.

INDOOR UNIT STRUCTURAL PARTS MS12 NN (WH) MS15 NN (WH) MS17 NN (WH)

Lists structural parts for indoor units MS12NN, MS15NN, MS17NN.

INDOOR UNIT HEAT EXCHANGER PARTS MS12 NN (WH) MS15 NN (WH) MS17 NN (WH)

Lists heat exchanger parts for indoor units MS12NN, MS15NN, MS17NN.

INDOOR UNIT ELECTRICAL PARTS MS12 NN (WH) MS15 NN (WH) MS17 NN (WH)

Lists electrical parts for indoor units MS12NN, MS15NN, MS17NN.

OUTDOOR UNIT STRUCTURAL PARTS MU12 NN MU15 NN MU17 NN

Lists structural parts for outdoor units MU12NN, MU15NN, MU17NN.

ACCESSORY AND REMOTE CONTROLLER PARTS

Lists accessory items and remote controller parts.

OPTIONAL PARTS

REFRIGERANT PIPES

Information on optional extension refrigerant pipes and their specifications.

AIR CLEANING FILTER

Details on the air cleaning filter, its life, and replacement.

DEODORIZING FILTER

Information about the deodorizing filter, cleaning, and replacement.

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