Mitsubishi Electric MS09NW, MS15NN, MUM30NN, MSM30NN Service Manual

DUCTLESS SPLIT-TYPE AIR CONDITIONERS

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TECHNICAL & SERVICE MANUAL

Wireless type

Models

MS09NW✕2 MS15NN✕1 • MUM30NN

CONTENTS

No.OB204

1. FEATURES·························································2

2. TECHNICAL CHANGES ····································3

3. PART NAMES AND FUNCTIONS······················3

4. SPECIFICATIONS ··············································4

5. DATA ···································································5

6. OUTLINES AND DIMENSIONS·························9

7. WIRING DIAGRAM ··········································10

8. REFRIGERANT SYSTEM DIAGRAM··············11

9. TROUBLESHOOTING······································12

10. DISASSEMBLY INSTRUCTIONS·····················14

11. PARTS LIST······················································17

12. OPTIONAL PARTS ····································BACK

NOTE:For parts list, please refer to the following manuals.

MS09NW ➝ OB192

MS15NN ➝ OB192

The Slim Line.
From Mitsubishi Electric.

1 FEATURES

MUM30EN

LCD Wireless
remote controller

MS09NW

MS15NN

MS09NW

This “3 to 1” Multi system (MSM30EN) consists of a single outdoor unit with three compressors that permit up to three
indoor units to be installed separate rooms, each with its own controller.

Cooling Capacity (BTU/h)

Operation

1 Indoor Unit Operation

2 Indoor Unit Operatin

3 Indoor Unit Operation

Indoor unit

MS09NW

8,200

—

—
8,200
8,200

—
8,100

MS09NW

—

8,200

—

8,200

—
8,200
8,100

MS15NN

—
—

12,400

—
12,400
12,400
12,200

1.SPACE-SAVING LAYOUT

Two or three indoor units are served by a single outdoor unit whose installation requires only minimum space. This allows
equipment installed outside the house to be arranged in a neat, space-saving layout.

2.FLEXIBLE INSTALLATION OF INDOOR UNITS

Each indoor unit can be connected to piping up to 65 feet in length, providing plenty of freedom in determining the best loca­tions for installation.

3.AUTO-RESTART FUNCTION

The auto restart function restarts the equipment when power is
restored following an outage automatically. Operation resumes
in the mode in which the equipment was running immediately
before the outage.

HIGH PERFORMANCE ROTARY COMPRESSOR

The advanced design of Mitsubishi Electric’s powerful and ener­gyefficient rotary compressor results in lower operating costs
and longer service life.

2

2 TECHNICAL CHANGES

MSM30EW ➔ MSM30NW

1. Indoor unit has been changed.

2. Outdoor unit has been changed.

3. Remote controller has been changed.
(The timer function has been changed to the clock timer function.)

4. Indoor auto vave has been adopted.

5. Fan speed control has changed.

(MF1/MF2 : 1.Lo/Lo➔Stop/Hi 2.Me/Me➔Me/Me 3.Hi/Hi➔Hi/Hi)

6. The relay “X64” has been added to electric circuit.

7. Surge absorber has been added to electric circuit.

3 PART NAMES AND FUNCTIONS

OUTDOOR UNIT

MUM30NN

3

4 SPECIFICATIONS

Model

Cooling capacity w1 BTU/h

w1 WPower consumption
EER (Triple unit operation)
SEER (Triple unit operation)
INDOOR UNIT MODEL
Extenal finish
Power Supply V, Hz, Phase

A

F.L.A

CFM
CFM

(Pints/h)

in.
in.
in.
in.

lbs.

V, Hz, Phase

A

F.L.A

Winding resistance (at 68˚F) "

Model

W
D
H

W
D
H

Dry
Wet

Liquid
Gas
Indoors
Outdoors
Height difference
Piping length

R.L.A
L.R.A

in.
in.
in.

in.
in.

ft
ft

lbs.

Max. fuse size (time delay)
Min. ampacity
Fan motor

Airflow
Lo-Me-Hi

Moisture removal
Cond. drain connection OD

Dimensions

Weight
OUTDOOR UNIT MODEL
External fnish
Power supply
Max. fuse sizu (time delay)
Min. ampacity
Fan motor

Compressor

Refrigerant control

Dimensions

Weight
REMOTE CONTROLLER
Control voltage (be built-in transformer)
REFRIGERANT PIPING

Pipe size
Connection

method
Between the

indoor &
outdoor units

Items

MSM30NN

Triple-Unit

A+B+C
28,400
2,990

DoubIe-Unit

A+B

A+C or B+C

16,400

20,600

1,860

9.9

10.0

2,060

C: MS15NN

White

A & B: MS09NW

White

115,60,1

15.0

0.5 0.6

0.37 0.43
208-265-328 360-395-452
177-226-279 314-342-392

1.0 1.5
5/8 5/8

32-1/16 39-15/16

7-3/16 7-1/2

12-5/8

18 31

MUM30NN

Munsell 5Y 7/1

208/230,60,1(3-wire)

30
25

0.8+0.7

KH122WEV<115V>

RH167NAB<208/230V>

C-R 0.97 C-S 4.81

C-R 2.47 C-S 4.62
10 8
37 29

Capillary tube

37-7-16

15-3/8

45-5/16

240

Wireless type

DC12V

Not supplied (optional parts)
1/4 1/4
3/8 5/8

Flared Flared

Flared Flared
Max. 25 Max. 25
Max. 65 Max. 65

Notes w1. Rating conditions (cooling) — Inddor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, 75˚FWB

Operating Range

Cooling

Maximum
Maximum

Indoor air intake temperature

90˚FDB,71˚FWB
67˚FDB,57˚FWB

Outdoor air intake temperature

115˚FDB

67˚FDB

Single-Unit

A or B

C

990

8,200

12,400

1,220

10-13/16

4

5 DATA

65

0.6

0.8

1.0

1.2

6

8

10

12

75 85 95 105 115

Outdoor intake air DB temperature (-F)

Total power consumption (kW) Total capacity (o 10

3

Btu/h)

Cooling capacity

SHF at rating condition = 0.72

Airflow = 279CFM

Bypass Factor = 0.24

Indoor intake air WB temperature (-F)

Indoor intake air WB temperature (-F)

63

67

71

63

67

71

65

1.0

1.2

1.4

1.6

10

12

14

16

75 85 95 105 115

Outdoor intake air DB temperature (-F)

Total power consumption (kW) Total capacity (o 10

3

Btu/h)

Cooling capacity

SHF at rating condition = 0.71

Airflow = 392CFM

Bypass Factor = 0.19

Indoor intake air WB temperature (-F)

Indoor intake air WB temperature (-F)

63

67

71

63

67

71

MS09NW✕ 2 MS15NN✕1
MUM30NN

1.PERFORMANCE DATA(ONE INDOOR UNIT WITH ONE OUTDOOR UNIT)

1) COOLING CAPACITY

TC

8.20

7.63

7.01

12.40

11.53

10.60

)

SHC

TPC

4.81

1.09

5.49

1.05

5.98

1.01

7.15

1.35

8.19

1.29

8.94

1.24

Indoor air Outdoor intake air DB temperature(˚F

Models

MS09NW

MS15NN

Notes 1. IWB : Intake air wet-bulb temperature
TC : Total Capacity (x10
TPC : Total Power Consumption (kW)

2. SHC is based on 80˚F of indoor intake air DB temperature.

IWB

(˚F)

71
67
63

71
67
63

10.05

15.19

14.38

13.52

3

Btu/h), SHC : Sensible Heat Capacity (x10

75 85 95 105 115

TC

SHC

TPC

5.89

0.88

9.51

6.85

0.83

8.94

7.63

0.79

8.76

1.09

10.21

1.03

11.40

0.98

TC

9.39

8.86

8.28

14.20

13.39

12.52

SHC

5.51

6.38

7.07

8.19

9.51

10.56

3

Btu/h)

TPC

0.97

0.92

0.88

1.19

1.13

1.08

TC

8.82

8.20

7.71

13.33

12.40

11.66

SHC

5.17

5.90

6.58

7.69

8.80

9.83

TPC

1.04

0.99

0.95

1.28

1.22

1.17

2) COOLING CAPACITY CORRECTIONS

Refrigerant piping length (one way)

MODEL

MS-09NW

25ft (std)

1.0

40ft

0.954

49ft

0.927

2.PERFORMANCE CURVE(ONE INDOOR UNIT WITH ONE OUTDOOR UNIT)

NOTE : Apoint on the curve shows the reference point.

MS09NW
MUM30NN

MS15NN
MUM30NN

TC

7.54

7.01

6.40

11.41

10.60

9.67

SHC

4.43

5.05

5.46

6.58

7.53

8.16

TPC

1.14

1.10

1.05

1.40

1.35

1.29

NOTE :

Total capacity = multiply cooling capacity in specifications table on page 4 by capacity correction factor on this page.
Total power consumption = multiply power consumption in specifcations table on page 4 by power correction factor on this

page.

5

67

40

50

60

70

80

90

100

(PSIG)

70

Outdoor ambient temperature

75 80 85 90 95 100 104-F

Suction pressure

70

86-F

80

75

Indoor DB temperature

67

170

180

200

220

240

260

280

300

(PSIG)

70

Outdoor ambient temperature

75 80 85 90 95 100 104-F

70

75

80

86-F

Condensing pressure

Indoor DB temperature

3.CONDENSING PRESSURE AND SUCTION PRESURE

67

170

180

200

220

240

260

280

300

(PSIG)

70

Outdoor ambient temperature

75 80 85 90 95 100 104-F

70

75

80

86-F

Condensing pressure

Indoor DB temperature

67

40

50

60

70

80

90

100

(PSIG)

70

Outdoor ambient temperature

75 80 85 90 95 100 104-F

Suction pressure

70

86-F

80
75

Indoor DB temperature

(ONE INDOOR UNIT WITH ONE OUTDOOR UNIT)

Data is based on the condition of indoor humidity 50%. Air flow should be set at HI. A point on the corve shows the reference
point.

MS09NW MS15NN
MUM30NN MUM30NN

MS09NW MS15NN
MUM30NN MUM30NN

6

2.STANDARD OPERATION DATA

MODEL Triple

A+B+C

Double

A+B A+C or B+C

Single

115,60,1 115,60,1 115,60,1

0.7+0.8 0.65+0.75 0.6+0.7

95 95 95

— — —

850/940 750/840 0/1030

2,720 2,360 1,039

A or B

C

28,400 16,400 20,600 8,200 12,400

0.72 0.72 0.71 0.72

2.99 1.86 2.06 0.99 1.22

2.873 1.79 1.978 0.955 1.173

MSM30NN

CoolingUnit

BTU/h

—

kW

kW

A

kW

A

A
PSIG
PSIG

˚F
˚F
˚F
˚F

ft

—

˚F
˚F
˚F
˚F

DB

WB

DB

WB

R.P.M.
CFM

˚F
˚F

DB

WB

R.P.M.
CFM

Item
Capacity
SHFTotal

Electrical
circuit

Refrigerant
circuit

Indoor
side

Outdoor
side

Input
Indoor unit model
Power supply (V,Hz,{)
Input
Fan current
Outdoor unit model
Power supply (V,Hz,{)
Input
Comp. current
Fan current
Condensing pressure
Suction pressure
Discharge temp.
Condensing temp.
Suction temp.
Comp.shell botton temp.
Ref.pipe length
Refrigerant charge
Entering

air temp.
Discharge

air temp.

Entering
air temp.

Fan speed
Airflow (Hi)

Fan speed
Airflow

MS09NW MS09NW MS15NN MS09NW MS09NW MS09NW MS15NN MS09NW MS15NN

0.035

0.34

0.035

0.34

0.047

0.71

0.41

0.035

0.34

0.035

0.34

MUM30NN

208/230,60,1(3-wire)

0.035

0.34

0.047

0.41

0.035

0.34

0.047

0.41

7.0

273

80
154
122

47
130

25

3 lbs 3 oz

80

67

60

57

1,230

279

264

80
157
118

47
130

25

3 lbs 3 oz

80

67

60

57

1,230

279

243

82
169
111

54
145

25

3 lbs 8 oz

80

67

58

57

1,200

392

262

78
197
118

60
171

25

3 lbs 3 oz

80

67

60

57

1,230

279

263

79
171
116

47
146

25

3 lbs 3 oz

80

67

60

57

1,230

279

269

78
151
118

47
124

25

3 lbs 3 oz

80

67

60

57

1,230

279

240

82
169
110

54
144

25

3 lbs 8 oz

80

67

58

57

1,200

392

267

80
143
121

52
129

25

3 lbs 3 oz

80

67

60

57

1,230

279

267

85
141
118

51
139

25

3 lbs 8 oz

80

67

58

57

1,200

392

7.0 3.8 7.0 7.0 7.0 3.8 7.0 3.8

0.72 0.71

INDOOR UNIT C

INDOOR UNIT B

INDOOR UNIT A

OUTDOOR UNIT

208/230V,60Hz,
1{ 3wire

POWER SUPPLY

115V common
115V 230V

SIGNAL WIRE 2wire 12V DC

115V,60Hz,1{

115V,60Hz,1{

115V,60Hz,1{

7