EasyManua.ls Logo

Mitsubishi Electric MU15NN2 User Manual

Mitsubishi Electric MU15NN2
80 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
SERVICE MANUAL
SPLIT-TYPE AIR CONDITIONERS
CONTENTS
1. FEATURES ························································2
2.TECHNICAL CHANGES ····································4
3. PART NAMES AND FUNCTIONS······················5
4. SPECIFICATIONS ··············································7
5. DATA ································································12
6. OUTLINES AND DIMENSIONS ······················23
7. WIRING DIAGRAM ··········································26
8. REFRIGERANT SYSTEM DIAGRAM ··············32
9. MICROPROCESSOR CONTROL ····················35
10. SERVICE FUNCTIONS ····································43
11. TROUBLESHOOTING ······································44
12. DISASSEMBLY INSTRUCTIONS ····················59
13. PARTS LIST······················································70
14. OPTIONAL PARTS ··········································79
Wireless type
Models
MS09NW
(W)
· MU09NW MUM30NN
MS12NN
(W)
· MU12NN MUM30NN2
MS15NN
(W)
· MU15NN
MS17NN
(W)
· MU17NN
MS09NW2
(W)
· MU09NW2
MS12NN2
(W)
· MU12NN2
MS15NN2
(W)
· MU15NN2
MS17NN2
(W)
· MU17NN2
No. OB192
The Slim Line.
From Mitsubishi Electric.
L
I
S
T
E
D
R
MS12NN MS12NN2
MS15NN MS15NN2
MS17NN MS17NN2
INDOOR UNIT
MU12NN MU12NN2
MU15NN MU15NN2
MU17NN MU17NN2
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.
REVISED EDITION -B
Revision:
MS09NW2, MS12NN2, MS15NN2 and
MS17NN2 has been added.
Parts List has been partially modified.
Please void OB192 REVISED EDITION -A.
Question and Answer IconNeed help?

Do you have a question about the Mitsubishi Electric MU15NN2 and is the answer not in the manual?

Mitsubishi Electric MU15NN2 Specifications

General IconGeneral
BrandMitsubishi Electric
ModelMU15NN2
CategoryAir Conditioner
LanguageEnglish

Summary

1 FEATURES

NEW 'I FEEL CONTROL' IN OUR LCD WIRELESS REMOTE CONTROLLER

Advanced features of the wireless remote controller, including 'I Feel Control' for user comfort.

REMOTE-CONTROL OPERATION MODE

Explains how to select airflow direction and vane swing using the remote controller.

2 TECHNICAL CHANGES

MS09EW MS09NW

Details technical modifications made for the MS09NW model compared to MS09EW.

MS12EN, MS15EN MS12NN, MS15NN

Lists technical changes implemented for MS12NN and MS15NN models.

MSM30EN2 MSM30NN

Outlines technical updates from MSM30EN2 to MSM30NN units.

MSM30NN MSM30NN2

Specifies technical modifications for the MSM30NN2 unit.

MS09NW MS09NW2

Details technical changes from MS09NW to MS09NW2 models.

MS12NN MS15NN MS17NN MS12NN2 MS15NN2 MS17NN2

Lists technical updates for the NW2/NN2 series models.

3 PART NAMES AND FUNCTIONS

INDOOR UNIT

Identifies and describes parts of the indoor unit for various models.

OUTDOOR UNIT

Identifies and describes parts of the outdoor unit for various models.

4 SPECIFICATIONS

INDOOR UNIT MODEL

Provides detailed specifications for indoor units, including dimensions, airflow, and sound level.

OUTDOOR UNIT MODEL

Lists specifications for outdoor units, covering power, compressor, and dimensions.

REMOTE CONTROLLER

Details specifications for the wireless remote controller.

MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE

MAX. HEIGHT DIFFERENCE

Illustrates maximum permissible height differences between units.

5 DATA

1. PERFORMANCE DATA

Presents cooling capacity and performance data for various operating conditions.

2) COOLING CAPACITY CORRECTIONS

Provides correction factors for cooling capacity based on refrigerant piping length.

2. PERFORMANCE CURVE

3. CONDENSING PRESSURE AND SUCTION PRESSURE

4. STANDARD OPERATION DATA

5. OPERATING RANGE

(1) POWER SUPPLY

Specifies voltage ratings and operating voltage ranges for indoor and outdoor units.

(2) OPERATION

Details standard operating conditions for cooling, including temperature and humidity.

6. OUTLET AIR SPEED AND COVERAGE RANGE

7. ADDITIONAL REFRIGERANT CHARGE (R-22(oz))

6 OUTLINES AND DIMENSIONS

INDOOR UNIT

Provides dimensional drawings and installation details for the indoor unit.

OUTDOOR UNIT

Offers dimensional drawings and installation guidelines for the outdoor unit.

7 WIRING DIAGRAM

MS09NW MODEL WIRING DIAGRAM

Shows the electrical wiring connections for the MS09NW indoor unit.

MU09NW MODEL WIRING DIAGRAM

Details the electrical wiring for the MU09NW outdoor unit.

8 REFRIGERANT SYSTEM DIAGRAM

MS09NW MS09NW2 INDOOR UNIT

Illustrates the refrigerant circuit for the MS09NW/NW2 indoor unit.

MU09NW MU09NW2 OUTDOOR UNIT

Depicts the refrigerant circuit for the MU09NW/NW2 outdoor unit.

MS12NN MS12NN2 MS15NN MS15NN2 MS17NN MS17NN2 INDOOR UNIT

Shows the refrigerant flow for the indoor units of the NW/NN2 series.

MU12NN MU12NN2 MU15NN MU15NN2 MU17NN MU17NN2 OUTDOOR UNIT

Illustrates the refrigerant circuit for the outdoor units of the NW/NN2 series.

9 MICROPROCESSOR CONTROL

WIRELESS REMOTE CONTROLLER

Explains the operation and functions of the wireless remote controller.

INDOOR UNIT DISPLAY SECTION

Describes the meaning of the operation indicator lamp on the indoor unit.

9-1. 'I FEEL CONTROL' OPERATION

DRY mode of 'I FEEL CONTROL'

9-2. COOL OPERATION

9-3. DRY OPERATION

9-4. FAN OPERATION

9-5. FAN MOTOR CONTROL<MS09>

9-6. AUTO VANE OPERATION

9-7. TIMER OPERATION

9-8. EMERGENCY-TEST OPERATION

10 SERVICE FUNCTIONS

10-1. AUTO RESTART FUNCTION

Explains the unit's ability to restart automatically after a power interruption.

10-2. TIMER SHORT MODE

Describes a service function to shorten timer settings.

10-3. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

Details how to modify P.C. boards for individual remote controller operation.

11 TROUBLESHOOTING

11-1. Cautions on troubleshooting

Important precautions to observe before and during troubleshooting procedures.

3. Troubleshooting procedure

Step-by-step guide to diagnose and resolve common issues.

4. How to replace batteries

Instructions for replacing batteries in the remote controller.

11-2 Instruction of troubleshooting

11-2-1 troubleshooting check table

A table correlating operation indicator symptoms with troubleshooting steps and repairs.

11-2-2 Trouble criterion of main parts

11-2-3 Trouble criterion of main parts

B Check of remote controller and receiver P.C. board

C Check of indoor electronic control P.C. board

D Check of outdoor unit

TEST POINT DIAGRAM AND VOLTAGE

Indoor electronic control P.C. board

Shows test points and voltage readings on the indoor unit's electronic board.

MS12NN MS15NN MS17NN MS12NN2 MS15NN2 MS17NN2 Indoor electronic control P.C. board

TEST POINT DIAGRAM AND VOLTAGE MUM30NN Outdoor electronic control P.C. board

TEST POINT DIAGRAM AND VOLTAGE MUM30NN2 Outdoor electronic control P.C. board

RELAY OPERATION

COOL & COOL mode of I FEEL CONTROL

Explains relay operations for COOL mode in 'I Feel Control'.

DRY & DRY mode of I FEEL CONTROL

Details relay actions during DRY mode of 'I Feel Control'.

FAN

Describes relay operation when the unit is in FAN mode.

COIL FROST PREVENTION mode

COOL & COOL mode of I FEEL CONTROL

Relay operation during coil frost prevention in COOL mode.

DRY & DRY mode of I FEEL CONTROL

Relay operation during coil frost prevention in DRY mode.

Indoor fan relay mode

MUM30NN SYSTEM

MUM30NN2 SYSTEM

12 DISASSEMBLY INSTRUCTIONS

12-1 MS09NW MS09NW2 INDOOR UNIT

Step-by-step guide for disassembling the MS09NW/NW2 indoor unit.

12-2 MS12NN, MS15NN, MS17NN INDOOR UNIT

12-3 MU09NW MU09NW2 OUTDOOR UNIT

12-4 MU12NN MU15NN MU17NN MU12NN2 MU15NN2 MU17NN2 OUTDOOR UNIT

12-5 MUM30NN MUM30NN2 OUTDOOR UNIT

13 PARTS LIST

13-1. INDOOR UNIT STRUCTURAL PARTS

Lists structural parts for MS09NW/NW2 indoor units.

13-2. ACCESSORY AND REMOTE CONTROLLER

Lists accessories and remote controllers for MS09NW/NW2.

13-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

13-4. INDOOR UNIT HEAT EXCHANGER PARTS

13-5. OUTDOOR UNIT STRUCTURAL PARTS, FUNCTIONAL PARTS AND ELECTRICAL PARTS

13-6. INDOOR UNIT STRUCTURAL PARTS

13-7. ACCESSORY AND REMOTE CONTROLLER

Lists accessories for MS12/15/17NN/NN2 indoor units.

13-8. INDOOR UNIT ELECTRICAL PARTS

13-9. INDOOR UNIT HEAT EXCHANGER PARTS

13-10. OUTDOOR UNIT STRUCTURAL PARTS

13-11. OUTDOOR UNIT STRUCTURAL PARTS

13-12. OUTDOOR UNIT STRUCTURAL PARTS

13-18. OUTDOOR UNIT ELECTRICAL PARTS

14 OPTIONAL PARTS

1. REFRIGERANT PIPES

Details optional refrigerant pipes, their specifications, and installation.

2. AIR CLEANING FILTER

Information on the air cleaning filter, its function, and maintenance.

3. DEODORIZING FILTER

Explains the deodorizing filter's purpose and cleaning/replacement procedures.

Related product manuals