Mitsubishi Mr.Slim MS09NW Service manual

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SPLIT-TYPE AIR CONDITIONERS
No. OB192
SERVICE MANUAL
Wireless type
Models
MS09NW (WH)
MS12NN (WH)
MS15NN (WH)
MS17NN (WH)
·
·
·
·
MU09NW
MU12NN
MU15NN
MU17NN
CONTENTS
MS12NN
MS15NN
MS17NN
INDOOR UNIT
Remote
controller
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
The Slim Line.
From Mitsubishi Electric.
MU12NN
MU15NN
MU17NN
OUTDOOR UNIT
L IS E D
T
R
Refer to our Service Manual OB202 when the indoor unit is used in the multi-system operation.
Applied models are MS09NW and MS15NN.
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FEATURES
MS12NN, MS15NN, MS17NN
Models
MS09NW
LCD wireless
remote controller
MU12NN, MU15NN, MU17NN
Cooling capacity
SEER
8,500Btu/h
10.2
MS12NN
12,300/12,600Btu/h
11.3/11.3
MS15NN
14,300/14,600Btu/h
10.5/10.5
MS17NN
15,900/16,100Btu/h
10.2/10.2
NEW “I FEEL CONTROL” IN OUR LCD WIRELESS REMOTE CONTROLLER WITH ON/OFF PROGRAM
TIMER
Mitsubishi Electric’s new wireless remote controller incorporates a number of advanced features that provide even greater control and ease-to- use. It has a liquid crystal display which indicates such infomation as mode, fan speed and temperature
selected as well as the programmed ON/OFF time. It is also equipped with “I Feel Control”, a unique Mitsubishi Electric feature
that allows the user to adjust the temperature to exactly the level he or she wants simply by tapping the button that describes
present conditions : “Too Cool” or “Too Warm”. The optimum temperature set this way is then memorized for immediate recall
whenever the air conditioner is used again. And what’s more, the new controller has been made more redesigned and easier
to handle than before.
Select desired air flow direction.
REMOTE-CONTROL OPERATION MODE
Using the remote controller, you can select from five airflow settings to match room layout and the location of people. Also, you
can set the vane to swing automatically.
SWING
Small in size, big on cooling.
COMPACT INDOOR UNIT
The sleek design of the NW/NN Series matches virtually any room
layout. For instance, MS09NW is 1013/16 o 321/16 o 7 3/16 (H o W o D),
which used to be 143/16 o 311/8 o 5 3/8.
1013/16
MS09NW
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.
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TECHNICAL CHANGES
MS09EW ➔ MS09NW
1. Indoor unit has changed.
(Outline dimension changes. 31-1/8”o5-3/8”o14-3/16”(WoDoH)➔32-1/16”o7-3/16”o10-13/16(WoDoH)
2. Outdoor unit has changed.
(Outline dimension changes. 29-15/16”o9-1/16”o21-1/4”(WoDoH)➔30-11/16”o10-1/16”o21-1/4”(WoDoH))
(Capillary tube, refrigerant and pipe had changed.)
3. Remote controller has changed. (The timer function was changed to the clock timer function.)
4. Indoor auto vane has been adopted.
MS12EN, MS15EN ➔ MS12NN, MS15NN
1. Indoor unit has changed.
(Outline dimension changes. 39-3/8”o7”o14-3/16”(WoDoH)➔39-15/16”o7-1/2”o12-5/8”(WoDoH))
2. Outdoor unit has changed.
(Outline dimension changes. 33-1/2”o11-7/16”o23-7/8”(WoDoH)➔33-7/16”o11-7/16”o23-13/16”(WoDoH))
(Capillary tube, refrigerant and pipe had changed.)
3. Remote controller has changed. (The timer function was changed to the clock timer function.)
4. The swing mode was addedd to indoor auto vane.
MS17NN
1. New Model
3
PART NAMES AND FUNCTIONS
MS09NW, MS12NN, MS15NN, MS17NN
REMOTE CONTROLLER
4
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INDOOR UNIT
MS09NW
MS12NN
MS15NN
MS17NN
Operation section
(When the front panel is opened)
MS09NW
MS09NW
Emergency operation switch
MS12NN, MS15NN, MS17NN
MS12NN, MS15NN, MS17NN
MS12NN
Emergency operation switch
OUTDOOR UNIT
MU09NW
MU12NN
MU15NN
MU17NN
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SPECIFICATIONS
When MS09NW indoor unit is operating with MUM18NW and MUM30NN outdoor unit connected.
(Please refer to the manual No.OB202 for MUM18NW and MUM30NN.)
ITEM
MODELS
MS09NW
MS12NN
Cooling capacity
w1
Btu/h
Power consumption
w1
W
EER [SEER]
w1
INDOOR UNIT MODEL
External finish
Power supply
V, phase, Hz
Max. fuse size (time delay)
A
Min. ampacity
A
Fan motor
F.L.A
Dry
CFM
Airflow Lo—Me—Hi
Wet
CFM
Moisture removal
Pints/h
Sound level Lo-Me-Hi
dB(A)
Cond. drain connection O.D.
in.
W
in.
Dimensions
D
in.
H
in.
Weight
lbs
OUTDOOR UNIT MODEL
External finish
Power supply
V, phase, Hz
Max. fuse size (time delay)
A
Min. ampacity
A
Fan motor
F.L.A
Model
Winding resistance (at 68˚F) ½
Compressor
R.L.A
L.R.A
Refrigerant control
Sound level
dB(A)
W
in.
Dimensions
D
in.
H
in.
Weight
lbs
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
Liquid
in.
Pipe size
Gas
in.
Indoor
Connection method
Outdoor
Between the indoor
Height difference
ft
& outdoor units
Piping length
ft
8,500
840
10.1 (10.2)
MS09NW
12,300/12,600
1,100/1,130
11.2/11.2 (11.3/11.3)
MS12NN
White
115, 1, 60
15
0.5
0.37
208-265-328
177-226-279
2.3
31-37-42
0.6
0.43
360-395-452
314-342-392
3.2
36-39-42
5/8
32-1/16
7-3/16
10-13/16
18
MU09NW
39-15/16
7-1/2
12-5/8
31
MU12NN
Munsell 5Y6.5/1
115, 1, 60
208/230, 1, 60
15
14
0.66
KH122WES
C-R 0.98 C-S 2.21
10
37
12
0.52
RH167NHDT
C-R 2.16 C-S 3.11
9
29
Capillary tube
46
30-11/16
10-1/16
21-1/4
64
52
33-7/16
11/7/16
23-13/16
92
Wireless type
12V DC
Not supplied (optional parts)
1/4
3/8
5/8
Flared
Flared
Max. 25
Max. 49
Notes w1 : Rating conditions (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, 75˚FWB
Operating Range
Cooling
6
Maximum
Minimum
Indoor intake air temperature Outdoor intake air temperature
115˚FDB
95˚FDB, 71˚FWB
67˚FDB
67˚FDB, 57˚FWB
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When MS15NN indoor unit is operating with MUM30NN outdoor unit connected.
(Please refer to the manual No.OB202 for MUM30NN.)
ITEM
MODELS
Cooling capacity w1
Btu/h
Power consumption w1
W
EER [SEER]
w1
INDOOR UNIT MODEL
External finish
Power supply
V, phase, Hz
Max. fuse size (time delay)
A
Min. ampacity
A
Fan motor
F.L.A
Dry
CFM
Airflow Lo—Me—Hi
Wet
CFM
Moisture removal
Pints/h
Sound level Lo-Me-Hi
dB(A)
Cond. drain connection O.D.
in.
W
in.
Dimensions
D
in.
H
in.
Weight
lbs
OUTDOOR UNIT
External finish
Power supply
V, phase, Hz
Max. fuse size (time delay)
A
Min. ampacity
A
Fan motor
F.L.A
Model
Winding resistance (at 68˚F) ½
Compressor
R.L.A
L.R.A
Refrigerant control
Sound level
dB(A)
W
in.
Dimensions
D
in.
H
in.
Weight
lbs
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
Liquid
in.
Pipe size
Gas
in.
Indoor
Connection method
Outdoor
Between the indoor
Height difference
ft
& outdoor units
Piping length
ft
MS15NN
MS17NN
14,300/14,600
1,370/1,400
10.4/10.4 (10.5/10.5)
MS15NN
15,900/16,100
1,570/1,600
10.1/10.1 (10.2/10.2)
MS17NN
White
115, 1, 60
15
0.6
0.43
360-395-452
293-321-367
4.7
36-39-42
0.7
0.51
406-441-491
346-374-417
5.1
40-43-45
5/8
39-15/16
7-1/2
12-5/8
31
MU15NN
MU17NN
Munsell 5Y6.5/1
208/230, 1, 60
20
14
15
0.52
RH207NHDT
C-R 1.68 C-S 2.78
10
35
RH231NHDT
C-R 1.65 C-S 2.67
11
38
Capillary tube
52
52
33-7/16
11-7/16
23-13/16
92
97
Wireless type
12V DC
Not supplied (optional parts)
1/4
5/8
Flared
Flared
Max. 25
Max. 49
Notes w1 : Rating conditions (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, 75˚FWB
Operating Range
Cooling
Maximum
Minimum
Indoor intake air temperature Outdoor intake air temperature
115˚FDB
95˚FDB, 71˚FWB
67˚FDB
67˚FDB, 57˚FWB
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MAX. REFRIGERANT PIPING LENGTH
Models
Additional piping
Max. length : ft
A
49
MAX. HEIGHT DIFFERENCE
25
8
Gas
Length of connecting pipe : in.
Liquid
Indoor unit
Outdoor unit
[ 1/4
16-15/16
0
[ 3/8
MS09NW
MS12NN
MS15NN
MS17NN
Piping size O.D. : in.
[ 5/8
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DATA
5
MS09NW, MS12NN, MS15NN, MS17NN
1. PERFORMANCE DATA
1) COOLING CAPACITY
Indoor air
Models
MS09NW
MS12NN
MS15NN
MS17NN
Outdoor intake air DB temperature(˚F)
75
85
95
105
115
IWB
(˚F)
TC
SHC
TPC
TC
SHC
TPC
TC
SHC
TPC
TC
SHC
TPC
TC
SHC
TPC
71
10.4
5.9
0.75
9.7
5.5
0.82
9.1
5.2
0.88
8.5
4.8
0.93
7.8
4.4
0.97
67
9.9
6.9
0.71
9.2
6.4
0.78
8.5
6.0
0.84
7.9
5.5
0.89
7.3
5.1
0.93
63
9.3
7.7
0.67
8.6
7.2
0.74
8.0
6.7
0.80
7.3
6.1
0.86
6.6
5.5
0.89
71
15.4
11.6
1.01
14.4
8.3
1.10
13.5
7.8
1.19
12.6
7.3
1.25
11.6
6.7
1.30
67
14.6
10.4
0.95
13.6
9.7
1.05
12.6
8.9
1.13
11.7
8.3
1.20
10.8
7.6
1.25
63
13.7
8.9
0.90
12.7
10.7
1.00
11.8
10.0
1.08
10.8
9.1
1.15
9.8
8.3
1.20
71
17.9
9.2
1.25
16.7
8.6
1.37
15.7
8.1
1.47
14.6
7.5
1.55
13.4
6.9
1.61
67
16.9
11.0
1.18
15.8
10.2
1.30
14.6
9.5
1.40
13.6
8.8
1.48
12.5
8.1
1.55
63
15.9
12.5
1.12
14.7
11.6
1.24
13.7
10.8
1.34
12.5
9.8
1.43
11.4
8.9
1.48
71
19.7
10.2
1.42
18.4
9.5
1.56
17.3
8.9
1.68
16.1
8.3
1.77
14.8
7.7
1.84
67
18.7
12.1
1.34
17.4
11.3
1.48
16.1
10.5
1.60
15.0
9.7
1.70
13.8
8.9
1.78
63
17.5
13.7
1.28
16.3
12.7
1.42
15.1
11.9
1.53
13.8
10.8
1.63
12.6
9.8
1.70
Notes 1. I WB : Intake air wet-bulb temperature.
3
3
TC : Total Capacity (x10 Btu/h), SHC : Sensible Heat Capacity (x10 Btu/h)
TPC : Total Power Consumption (kW)
2. SHC is based on 80˚F of indoor intake air DB temperature.
2) COOLING CAPACITY CORRECTIONS
Refrigerant piping length (one way)
Models
25ft (std)
40ft
49ft
MS09NW
1.0
0.954
0.927
MS12NN
1.0
0.954
0.927
MS15NN
1.0
0.954
0.927
MS17NN
1.0
0.954
0.927
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2. PERFORMANCE CURVE
NOTE : A point on the curve shows the reference point.
MS09NW
MU09NW
MS12NN
MU12NN
Cooling capacity
SHF at rating condition = 0.7
Airflow = 279CFM
Bypass Factor = 0.26
16
Indo
or in
or in
take
Total capacity ( o10 Bw/h)
Indo
air W
B tem
pera
10
ture
(¡F)
8
71
67
63
6
1.2
erature
take
0.8
Indoor in
temp
air WB
(¡F)
Total power consumption (kW)
Total power consumption (kW)
Total capacity ( o10 Bw/h)
12
Cooling capacity
SHF at rating condition = 0.71
Airflow = 392CFM
Bypass Factor = 0.17
71
67
63
0.6
65
75
85
95
105
115
Outdoor intake air DB temperature (¡F)
mpe
ratu
re (¡
F)
12
71
67
10
63
8
2
ture (¡F)
71
67
63
B tempera
take air W
Indoor in
1
75
85
95
105
Outdoor intake air DB temperature (¡F)
115
MS17NN
MU17NN
18
Cooling capacity
SHF at rating condition = 0.7
Airflow = 367CFM
Bypass Factor = 0.22
Indo
20
Cooling capacity
SHF at rating condition = 0.65
Airflow = 417CFM
Bypass Factor = 0.24
Indo
or in
air W
B te
16
mpe
ratu
re (
¡F)
14
71
67
12
63
2
Indoor
intake
air WB
F)
ture (¡
ra
tempe
71
67
63
1
67
75
85
95
105
Outdoor intake air DB temperature (¡F)
115
Total capacity ( o10 Bw/h)
take
Total power consumption (kW)
Total power consumption (kW)
Total capacity ( o10 Bw/h)
or in
10
air W
B te
67
MS15NN
MU15NN
take
14
take
air W
B te
18
mpe
ratu
re (
¡F)
16
71
14
67
63
2
e air
r intak
ture (¡
mpera
WB te
F)
Indoo
71
67
63
1
67
75
85
95
105
Outdoor intake air DB temperature (¡F)
115
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3. CONDENSING PRESSURE AND SUCTION PRESSURE
Data is based on the condition of indoor humidity 50%. Air flow should be set at Hi. A point on the curve shows
the reference point
MU09NW
(PSIG)
300
86 F
80
75
70
280
Condensing pressure
260
ure
rat
240
r
oo
DB
e
mp
te
Ind
220
200
180
170
68 70
75
80
85
90
95
100
104 F
Outdoor ambient temperature
MU09NW
(PSIG)
90
86 F
rature
mpe
Indoor DB te
80
Suction pressure
80
75
70
70
60
50
40
68 70
75
80
85
90
95
100
104 F
Outdoor ambient temperature
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Data is based on the condition of indoor humidity 50%. Air flow should be set at Hi. A point on the curve shows
the reference point
MU12NN
(PSIG)
300
280
86 F
80
75
70
Condensing pressure
260
ure
rat
e
mp
e
Bt
240
rD
o
do
In
220
200
180
160
68 70
75
80
85
90
95
100
104 F
Outdoor ambient temperature
MU12NN
(PSIG)
90
86 F
mperature
Indoor DB te
80
Suction pressure
80
75
70
70
60
50
40
68 70
75
80
85
90
Outdoor ambient temperature
12
95
100
104 F
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Data is based on the condition of indoor humidity 50%. Air flow should be set at Hi. A point on the curve shows
the reference point
MU15NN
(PSIG)
320
300
86 F
80
75
70
280
Condensing pressure
260
ure
rat
e
mp
e
Bt
240
rD
o
do
In
220
200
180
160
68 70
75
80
85
90
95
100
104 F
Outdoor ambient temperature
MU15NN
(PSIG)
90
rature
Indoor DB tempe
86 F
Suction pressure
80
80
75
70
70
60
50
40
68 70
75
80
85
90
95
100
104 F
Outdoor ambient temperature
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Data is based on the condition of indoor humidity 50%. Air flow should be set at Hi. A point on the curve shows
the reference point
MU17NN
(PSIG)
320
300
86 F
80
75
70
280
Condensing pressure
260
ure
rat
e
mp
e
Bt
240
rD
o
do
In
220
200
180
160
68 70
75
80
85
90
95
100
104 F
Outdoor ambient temperature
MU17NN
(PSIG)
90
86 F
rature
Indoor DB tempe
Suction pressure
80
80
75
70
70
60
50
40
68 70
(20)
14
75
80
85
90
Outdoor ambient temperature
95
100
104 F
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4. STANDARD OPERATION DATA
MS09NW
MS12NN
MS15NN
MS17NN
Unit
Cooling
Cooling
Cooling
Cooling
Btu / h
8,500
12,300/12,600
14,300/14,600
15,900/16,100
—
0.7
0.71
0.65
0.65
kW
0.84
1.10/1.13
1.37/1.40
1.57/1.60
INDOOR UNIT MODEL
MS09NW
MS12NN
MS15NN
MS17NN
Power supply (V, phase, Hz)
115, 1, 60
115, 1, 60
115, 1, 60
115, 1, 60
kW
0.035
0.047
0.047
0.054
A
0.34
0.41
0.41
0.47
OUTDOOR UNIT MODEL
MU09NW
MU12NN
MU15NN
MU17NN
Power supply (V, phase, Hz)
115, 1, 60
208/230, 1, 60
208/230, 1, 60
208/230, 1, 60
kW
0.805
1.053/1.083
1.323/1.353
1.516/1.546
A
6.49
4.71/4.31
6.01/5.51
7.01/6.41
Model
Item
Capacity
Total
SHF
Input
Input
Fan current
Electrical
circuit
Input
Comp. current
A
0.66
0.49
0.49
0.49
Condensing pressure
psi-G
259
243
256
252
Suction pressure
psi-G
80
78
77
77
Discharge temperature
˚F
161
157
166
174
Condensing temperature
˚F
117
112
116
114
Suction temperature
˚F
49
48
48
46
Comp. shell bottom temp
˚F
137
140
154
160
Ref. pipe length
ft
25
25
25
25
Refrigerant charge
—
2 lbs 2oz
2 lbs 14 oz
2 lbs 14 oz
lbs oz
DB
˚F
80
80
80
80
WB
˚F
67
67
67
67
DB
˚F
60
58
55
56
WB
˚F
57
56
54
54
Fan speed
rpm
1,230
1,200
1,200
1,290
Airflow (Hi)
CFM
279
392
367
417
DB
˚F
95
95
95
95
WB
˚F
—
—
—
—
Fan speed High / Low
rpm
780
830/900
830/900
830/900
Airflow
CFM
1,024
1,324/1,430
1,324/1,430
1,288/1,394
Fan current
Refrigerant
circuit
Intake air temperature
Indoor
unit
Discharge air temperature
Intake air temperature
Outdoor
unit
POWER SUPPLY
MS09NW
INDOOR UNIT
MS12/15/17NN
115V 60Hz, 1[
INDOOR UNIT
115V 60Hz, 1[
SIGNAL WIRE
2 wire 12V DC
SIGNAL WIRE
2 wire 12V DC
Field installed
115V 60Hz, 1[
OUTDOOR UNIT
Field installed
208/230V 60Hz, 1[
OUTDOOR UNIT
15
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5. OPERATING RANGE
(1) POWER SUPPLY
Rating
Models
MS09NW
MS12NN
MS15NN
MS17NN
Indoor unit
Guaranteed Voltage
Min. 103V — Max. 127V
115V 60Hz 1[
MU09NW
Outdoor unit
MU12NN
MU15NN
MU17NN
Min. 198V
208/230V 60Hz 1[
208V
230V
Max. 253V
(2) OPERATION
Function
Intake air
temperature
Outdoor
Indoor
DB (˚F)
WB (˚F)
DB (˚F)
WB (˚F)
Standard temperature
80
67
95
—
Maximum temperature
95
71
115
—
Minimum temperature
67
57
67
—
Condition
Cooling
—
78%
Maximum humidity
6. OUTLET AIR SPEED AND COVERAGE RANGE
Model
Function
● The air coverage range is the value up to the position
where the air speed is 1 ft/sec, when air is blown out
horizontally from the unit properly at the High speed
position.
The coverage range should be used only as a general guideline since it varies according to the size of
the room and furniture arranged in the room.
Air flow Air speed Coverage
(CFM) (ft/sec.) range (ft)
Dry
328
0.1
25.6
Wet
279
0.1
21.8
Dry
452
0.1
29.2
Wet
392
0.1
25.5
Dry
452
0.1
29.2
Wet
367
0.1
23.9
Dry
491
0.1
31.7
Wet
417
0.1
27.0
MS09NW
MS12NN
MS15NN
MS17NN
7. ADDITIONAL REFRIGERANT CHARGE (R-22(oz))
Model
MS09NW
MU09NW
MS12NN
MU12NN
MS15NN
MU15NN
MS17NN
MU17NN
16
Outdoor unit
precharged
(up to 25ft)
Refrigerant piping length (one way)
25ft
30ft
33ft
40ft
45ft
49ft
0
1
1
2
2
3
2 lbs 2 oz
2 lbs 14 oz
2 lbs 14 oz
3lbs
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Page 17
OUTLINES AND DIMENSIONS
Unit : inch
MS09NW
8-7/8
8-7/8
5-1/4
3-5/16
3/8
INDOOR UNIT
12-11/16
3-5/16
10-3/8
8-11/16
2-9/16
7-3/16 3/16
5-1/8
24-5/8
1/4-19-11/16
3/8-16-15/16
1-3/8 O.D.
3/4 I.D
1/4
3-15/16
10-13/16
32-1/16
2-3/8
3-11/16
12-3/8
1/8
1-13/16
1-5/8
7-3/8
7-3/16
30-13/16
2-13/16
5/8
1-1/8
3-9/16
11/16
6-5/16
2-3/16
MU09NW
4 in
4-3/8 o 13/16
12-5/8
30-11/16
1-1/16
9/16 9/16
11-1/4
12-5/8
3/4
2-13/16
16-11/16
1-15/16
9-13/16
19-5/8
4 in.
16
20 in
n.
16 i
14 i
n.
5/8
7/16
(5/16 o 7/8)
1/4
2-3/8
2-9/16
3-9/16
13-1/2
3/8
11-1/4
.
1-1/4
4-13/16
21-1/4
10-5/16
10-1/16
12-5/16
3-9/16
1-11/16
7/8
12-5/8
11/16
4 in.
OUTDOOR UNIT
4
4-3/16
3/8
2-9/16
17
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Page 18
MS12NN, MS15NN, MS17NN
INDOOR UNIT
Unit : inch
7/16 o 13/16
5-15/16
8-9/16
11-11/16
1/8
17-11/16
17-11/16
10-13/16
11-3/16
2-3/8
1-9/16
13/16
25-1/2
13-7/8
17-1/4
2-15/16
39-15/16
7-1/2
3/16
12-5/8
5/16-19-11/16
1/2-16-15/16
1-15/16 O.D.
1-1/8 O.D.
1-15/16
7-1/2
30-1/2
5/8
1-1/8
11/16
6-5/16
2-3/16
13/16
13-9/16
11-7/16
12-3/16
4 in.
1-3/8
9-3/4
13-12/16
4 in.
MU12NN, MU15NN, MU17NN
OUTDOOR UNIT
20
14 i
n.
in.
1-15/16
5/8
1-3/16
19-11/16
33-7/16
18
3-15/16
6-3/16
11-1/2
13/16
23-13/16
1/4
7-3/16
2-15/16
5/8
6-5/16
.
4 in
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Page 19
WIRING DIAGRAM
MS09NW
INDOOR UNIT
MODEL WIRING DIAGRAM
TO OUTDOOR
UNIT
CONNECTING
WIRES
DC12V
POWER
SUPPLY
115V
1 phase
60Hz
2
TB
w YLW
1
w VLT
N
w BLK
L1
CN202
SR11
1
2
HIC1
CN201
NR11
1
2
3
RED
LD101 CN
104
GROUND
CN
151
POWER MONITOR,
RT11
3
2
1
C11
F11
3
BLK
GRY
YLW
BRN
WHT
RED
1
2
3
MF
4
5
6
CN211
ELECTRONIC CONTROL P.C BOARD
5
5
5
RT12
CN
111
CN
121
TRANS
TAB12
CN
112
MV
RECEIVER
P.C.BOARD
AUTO RESTART
ASSY
REMOTE
CONTROLLER
SYMBOL
NAME
SYMBOL
NAME
SYMBOL
NAME
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
TB
TERMINAL BLOCK
HIC1
DC/DC CONVERTER
RT11
ROOM TEMPERATURE THERMISTOR
MV
VANE MOTOR
F11
FUSE(3.0A)
RT12
INDOOR COIL THERMISTOR
SR11
MF
INDOOR FAN MOTOR
SOLID STATE RELAY
NOTE:1. For the outdoor electric wiring, refer to the outdoor unit electric wiring diagram .
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block,
: Connector
MU09NW
MODEL WIRING DIAGRAM
OUTDOOR UNIT
GROUND
L1TB w RED w
POWER SUPPLY
115V
1 phase 60Hz
N
52C
51C
w WHT
NO
COM
w BLK
WHT
WHT 2
1
C
C1 RED
S
FROM INDOOR UNIT
CONNECTING WIRES
DC12V
1
w VLT w 1
2
w YLW w 2
MC
R
BLK
52C
C2
WHT
WHT
WHT
1
BLK
BLK
2
RED
RED
MF
3
SYMBOL
C1
NAME
COMPRESSOR CAPACITOR
SYMBOL
NAME
MF
OUTDOOR FAN MOTOR
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR(INNER THERMOSTAT)
51C
OVERCURRENT RELAY
52C
COMPRESSOR CONTACTOR
NOTE:1. Use copper conductors only.(For field wiring)
2. “w”show the terminals with a lock mechanism, so they can not be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block,
: Connector
SYMBOL
NAME
TB1
TERMINAL BLOCK
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
19
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Page 20
MS12NN, MS15NN, MS17NN
MODELS WIRING DIAGRAM
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
WIRES
DC12V
1
w VLT
CN201
1
2
3
N
w BLK
TAB12
L1
WHT
ORN
RED
BLK
YLW
BLU
LDC12
SR142
2 1
CN202
SR143
CN
104
RT11
LDC11
SR144
TRANS
CN
102
RT12
CN
111
LDCOM
F11
NR11 C11
CN
101
CN
112
LDFH
LDFL
LDFM
CN
151
1
2
3
4
5
6
7
8
WHT
ORN
RED
BLK
YLW
BLU
BRN
MF
GRN/YLW
GRN/YLW
GROUND
3
3
5
RECEIVER
P.C. BOARD
5
MV
DISPLAY
P.C. BOARD
REMOTE
CONTROLLER
SYMBOL
HIC1
RED
BRN
DSAR
POWER
SUPPLY
115V
1 phase
60Hz
2 TB w YLW
AUTO RESTART
ASSY
NAME
SYMBOL
NAME
SYMBOL
NAME
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
TB
TERMINAL BLOCK
HIC1
DC/DC CONVERTER
RT11
ROOM TEMPERATURE THERMISTOR
MV
VANE MOTOR
RT12
INDOOR COIL THERMISTOR
DSAR
F11
FUSE(3.0A)
MF
INDOOR FAN MOTOR
SURGE ABSORBER
SR142~SR144 SOLID STATE RELAY
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block,
: Connector
MU12NN, MU15NN, MU17NN
MODELS WIRING DIAGRAM
OUTDOOR UNIT
TB
w
RED
w
NO
L2
w
WHT
C
COM
C1 RED
BLU
BLK
MC
BLU
1
FROM INDOOR UNIT
CONNECTING WIRES
DC12V
SYMBOL
2
w VLT
w
C2
h
SYMBOL
WHT
RED
WHT
ORN
RED
NAME
MF
SYMBOL
NAME
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR(INNER THERMOSTAT)
TB
TERMINAL BLOCK
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR(INNER THERMOSTAT)
52C
COMPRESSOR CONTACTOR
NOTE:1. Use copper conductors only.(For field wiring)
2. “w”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block,
: Connector
20
BLK
ORN
52C
w YLW
NAME
WHT
R
S
4
w
3
POWER SUPPLY
208/230V
1phase 60Hz
52C
2
L1
1
GROUND
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
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Page 21
REFRIGERANT SYSTEM DIAGRAM
Unit:inch
MS09NW / MU09NW
INDOOR UNIT
OUTDOOR UNIT
Refrigerant pipe
3/8
(option)
(with heat insulator)
Stop valve
with service
port
Indoor heat
exchanger
Indoor coil
thermistor
RT12
Flared
connection
Service
port
Fusible plug
Service
port
Compressor
Room temperature
thermistor
RT11
Outdoor heat
exchanger
Strainer
Flared
connection
Accumulator Muffler
Stop valve
Refrigerant pipe 1/4
(option)
(with heat insulator)
Capillary tube O.D 0.12 o I.D.0.063 o 47-1/4
Flow of refrigerant
MS12NN / MU12NN
MS15NN / MU15NN
MS17NN / MU17NN
Unit:inch
OUTDOOR UNIT
INDOOR UNIT
Refrigerant pipe 5/8
(option)
(with heat insulator)
Indoor heat
exchanger
Indoor coil
thermistor
RT12
Distributor
Stop valve
with service port
Flared
connection
Service
port
Fusible plug
Service
port
Outdoor heat
exchanger
Accumulator
Room temperature
thermistor
RT11
Muffler
Compresser
Flared
connection
MU12NN OD 0.12 o ID 0.071 o 31-1/2
MU15NN OD 0.12 o ID 0.071 o 21-5/8
MU17NN OD 0.12 o ID 0.079 o 27-9/16
Capillary tube
Refrigerant pipe 1/4
(option)
(with heat insulator)
Stop valve
Strainer
Flow of refrigerant
21
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MICROPROCESSOR CONTROL
Wireless remote controller
MS09NW, MS12NN, MS15NN, MS17NN
Once the controls are set, the same operation mode can be
repeated by simply turning the OPERATE/STOP button ON.
Indoor unit receives the signal with a beep tone.
When the system turned off, 3-minute time delay will operate
to protect system from overload and compressor will not restart
for 3 minutes.
1. “I FEEL CONTROL” OPERATION
(1) Press OPERATE/STOP button on the remote controller. OPERATION INDICATOR LAMP of the
indoor unit will turn on with a beep tone.
(2) Press OPERATION SELECT button to set “I FEEL
CONTROL” Then a beep tone is heard.
(3) The operation mode is determined by the initial
room temperature at start-up of the operation.
Initial room temperature
mode
more than 77˚F
COOL mode of
“I FEEL CONTROL”
55˚F to 77˚F
DRY mode of
“I FEEL CONTROL”
● Once the mode is fixed, the mode will not change
by room temperature afterwards.
● Under the ON-TIMER operation, the mode is determined
according to the room temperature when the operation
starts.
INDOOR UNIT DISPLAY SECTION
Operation Indicator
● When the system is stopped with the
OPERATE/STOP button on the remote controller,
and restarted within 2 hours in “I FEEL CONTROL”
mode, the system operates in previous mode automatically regardless of the room temperature.
Example
Previous operation
COOL mode of
“I FEEL CONTROL”
or COOL mode
Restart
COOL mode of “I
FEEL CONTROL”
● When the system is restarted after 2 hours, the operation
mode is determined by the initial room temperature at
start-up of the operation.
Example
Previous operation
COOL mode of “I
FEEL CONTROL”
or COOL mode
22
COOL or DRY mode of
“I FEEL CONTROL” that
determined by initital
room temperature startup of the operation.
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Page 23
(4) The initial set temperature is decided by the initial room temperature.
Model
COOL mode of
“I FEEL CONTROL”
Initial room temperature
79: or more
79˚F or more
DRY mode of
“I FEEL CONTROL”
55˚F to 77 ˚F
Initial set temperature
75˚F
Initial room temperature
minus 4˚F
Initial room temperature
minus 4˚F
w1
w1 After the system restarts by the remote controller, the system operates with the previous set temperature regardless of
the initial set temperature.
The set temperature is calculated by the previous set temperature.
(5) TEMPERATURES buttons
In “I FEEL CONTROL” mode, set temperature is decided by the microprocessor based on the room temperature.
In addition, set temperature is controlled by TOO WARM or TOO COOL buttons when you feel too cool or too warm.
Each time the TOO WARM or TOO COOL button is pressed,the indoor unit receives the signal and emits a beep tone.
● Fuzzy control
When the TOO COOL or TOO WARM button is pressed, the microprocessor changes the set temperature, considering
the room temperature, the frequency of pressing TOO COOL or TOO WARM button and the user’s preference to heat or
cool. So this is called “Fuzzy control”, and works only in “I FEEL CONTROL” mode.
In DRY mode of “I FEEL CONTROL”, the set temperature doesn’t change.
▲ TOO
COOL … To raise the set temperature 2~4 degrees(°F)
▼ TOO
WARM … To lower the set temperature 2~4 degrees(°F)
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— COOL mode of “I FEEL CONTROL” —
ON
ON
Compressor and
outdoor fan motor
OFF
Indoor fan motor
ON
OFF
Run continuously in cooling mode
NOTE : Coil frost prevention during COOL mode of “I FEEL CONTROL”
There are two types of controls in coil frost prevention.
1 Temperature control
<MS09NW> When the indoor coil thermistor RT12 reads 39°F or below for 5 minutes, the coil frost prevention mode starts.
<MS12/15/17NN> When the indoor coil thermistor RT12 reads 30°F or below, the coil frost prevention mode starts
immediately.
However, the coil frost prevention only works after 5 minutes from the compressor starts.
The compressor stops and the indoor fan operates at the set speed for 5 minutes.
After that, if RT12still reads below 39°F (MS09NW) or below 30°F (MS12/15/17NN) this mode is prolonged until the RT12
reads over 39°F (MS09NW) or 30°F (MS12/15/17NN) .
2 Time control
When the three conditions below have been satisfied for 1 hour and 45 minutes, compressor stops for 3 minutes.
a. Compressor has been continuously operating.
b. Indoor fan speed is Lo or Me.
c. Room temperature is below 79°F.
When compressor stops, the accumulated time is cancelled and when compressor restarts, time counting starts
from the beginning.
Time counting also stops temporarily when the indoor fan speed becomes Hi or the room temperature exceeds
79°F. However, when two of the above conditions (b.and c.) are satisfied again.Time accumulation is resumed.
● Indoor fan operates at the set speed by FAN SPEED CONTROL button.
Followings are the fan speed in AUTO.
Initial temperature difference
Room temperature minus set temperature : 4 degrees or more············································Hi
Room temperature minus set temperature : 2 degree or more and less than 2 degrees·····Me
4 deg. 7 deg.
Room temperature minus set temperature : less than 2 degree···········································Lo
2 deg. 3 deg.
—DRY mode of “I FEEL CONTROL”—
The system for dry operation uses the same refrigerant circuit as the cooling circuit.
The compressor and the indoor fan are controlled by the temperature and the microprocessor.
By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature
decrease.
The operation of the compressor and indoor fan is as follows.
1. When the room temperature is 73°F or over:
Compressor operates by temperature control and time control.
1 Set temperature is controlled to fall 4°F as initial set temperature.
2 When the thermostat is ON, the compressor repeats 8 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
Indoor fan and outdoor fan operate in the same cycle as the compressor.
2. When the room temperature is under 73°F.
When the thermostat is ON, the compressor repeats 2 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
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Page 25
Operation time chart
Example
ON
1st ON
OFF
Thermostat
Indoor fan
OFF
OFF
ON
Outdoor fan
compressor
ON
OFF
8 min.
ON
ON
ON
ON
OFF
1 min.
3 min.
NOTE ● Coil frost prevention during DRY mode of “I FEEL CONTROL”
The operation is as same as coil frost prevention during COOL mode of “I FEEL CONTROL” excepting
the indoor fan is OFF.
● During coil frost prevention the indoor fan speed becomes Lo and the outdoor fan is OFF.
(Because the coil frost prevention has priority.)
2. COOL OPERATION
(1) Press OPERATE/STOP button.
OPERATION INDICATOR of the indoor unit
turns on with a beep tone.
(2) Select COOL mode.
(3) Set the TEMPERATURE button.
(TOO WARM or TOO COOL button)
The setting range is 59 ~ 89°F
w Indoor fan continues to operate regardless of
thermostat’s OFF-ON
w Coil frost prevention is as same as COOL
mode of “I FEEL CONTROL”
F
95
86
77
3. DRY OPERATION
(1) Press OPERATE/STOP button.
OPERATION INDICATOR of the indoor unit
turns on with a beep tone.
(2) Select DRY mode.
(3) The microprocessor reads the room temperature
and determines the set temperature. Set temperature is as shown on the right chart.
Thermostat (SET TEMP.)is not working.
The other operations are as same as DRY mode
of “I FEEL CONTROL”.
(4) DRY operation will not function when the room
temperature is 55°F or below.
(5) When DRY operation functions, the fan speed is
lower than cool operation.
68
59
50
50
59
68
77
86
95 F
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4.FAN OPERATION
(1)Press POWER ON/OFF button.
(2)Select FAN mode.
(3)Select the desired fan speed.When AUTO,it becomes Lo.(Only DRY operation.)
Only indoor fan operates.Outdoor unit does not operate.
5. FAN MOTOR CONTROL (MS09NW only)
(1) Rotational frequency feedback control
The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feedback
the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (Hi,Me,Lo) the
microprocessor controls SR11 and adjusts fan motor electric current to make the current rotational frequency close to the
target rotational frequency. With this control, when the fan speed is switched, the rotational frequency changes smoothly.
(2) Fan motor lock-up protection
When the rotational frequency feedback signal has not output for 12 seconds, (or when the microprocessor cannot detect
the signal for 12 seconds) the fan motor is regarded locked-up. Then the electric current to the fan motor is shut off. 3 minutes later, the electric current is applied to the fan motor again. During the fan motor lock-up, the operation indicator flashes to show the fan motor abnormality. (See page 32.)
6. AUTO VANE OPERATION
(1) Vane motor drive
MS series is equipped with a stepping motor for the vane. The rotating direction, speed, and angle of the motor are controlled by plus signals (approx. 12V) transmitted from indoor microprocessor.
(2) The auto vane angle changes as follows by pressing the VANE CONTROL button.
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(3) Positioning
The vane will once swings to the vane stopper as below to confirm the standard position and then set to the desired angle.
The positioning is decided as follows.
(a) When the OPERATE/STOP button is pressed. (POWER ON/OFF)
(b) When the vane control change AUTO to MANUAL.
(c) When the SWING is finished.
(d) When the test run starts.
(e) When the power supply is ON.
(4) VANE AUTO mode
In VANE AUTO mode, the microprocessor automatically determines the vane angle and operation to make the optimum
room-temperature distribution.
1 In COOL and DRY operation
Vane angle is fixed to Angle 1.
2 In FAN operation
Vane angle is fixed to Angle 4.
(5) Dew prevention
During COOL or DRY operation with the vane angle at Angle 4 or 5 when the compressor cumulative operation
exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.
(6) SWING MODE
By pressing the SWING button vane swings vertically. The remote controller displays SWING mode is cancelled when the
SWING button is pressed again or the operation stops or changes to other mode or VANE button is pressed.
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7. TIMER OPERATION
1. How to set the timer.
(1) Press OPERATE/STOP button to start the air conditioner.
(2) Check that the current time is set correctly.
NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display
of TIMER MONITOR so set the current time, correctly with CLOCKSETTING button.
(3) Press TIMER CONTROL button to select the operation.
“wSTART” button... AUTO START operation (ON timer) Ascertain the OPERATION INDICATOR on the indoor unit
lights.
“wSTOP” button... AUTO STOP operation (OFF timer)
(4) Press HR. and MIN. button to set the timer. Time setting is 10-minute units.
HR. and MIN, button will work when “wSTART” or “wSTOP” mark is flashing.
These marks disappear in 1 minute.
When setting the ON timer, check that OPERATION INDICATOR of the indoor unit lights.
NOTE1 : Be sure to place the remote controller at the position where its signal can reach the air conditioner even during
TIMER operation, or the set time may deviate within the range of about 10 minutes.
NOTE2 : Reset the timer in the following cases, or the set time may deviate and other malfunctions may occur.
● A power failure occurs.
● The circuit breaker functions.
2. CANCEL
Timer setting can be cancelled with the TIMER CONTROL buttons. (“wSTART” or “wSTOP”)
To cancel the ON timer, press the “wSTART” button.
To cancel the OFF timer, press the “wSTOP” button.
Timer is cancelled and the display of set time disappears.
PROGRAM TIMER
● The OFF timer and ON timer can be used in combination.
● “ ” and “ ” display shows the order of the OFF timer and ON timer operation.
(Example 2) The current time is 11:00 AM.
(Example 1) The current time is 8:00 PM.
The unit turns on at 5:00 PM, and off at 9:00 PM.
The unit turns off at 11:00 PM, and on at 6:00 AM.
START
STOP
NOTE : TIMER setting will be cancelled by power failure or breaker functioning.
28
START
STOP
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Page 29
8. EMERGENCY-TEST OPERATION
When the remote controller is missing, has failed or the batteries run down, press the EMERGENCY OPERATION switch
on the front of the indoor unit. The unit will start and the OPERATION INDICATOR lamp will light.
The first 30 minutes of operation will be the test run operation. This operation is for servicing. The indoor fan runs at high
speed and the system is in continuous operation. The thermostat is ON and the timer is reset to normal.
After 30 minutes of test run operation the system shifts to EMERGENCY COOL MODE with a set temperature of 75°F
The fan shifts to MED speed.
This operation continues until the EMERGENCY OPERATION switch is pressed again or any button on the remote controller is pressed,and after that normal operation will start.
The coil frost prevention circuit operates in this mode.
In the test run or Emergency operation, auto vane operates in AUTO mode with the set temperature 75°F.
NOTE : Do not press the EMERGENCY OPERATION switch during normal operation.
MS09NW
Press once
<Cool>
Press again
<Stop>
Emergency operation
switch
MS12NN
MS15NN
MS17NN
Emergency operation
switch
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Page 30
SERVICE FUNCTIONS
MS09NW, MS12NN, MS15NN, MS17NN
1. AUTO RESTART FUNCTION
When the indoor unit is operated with the remote controller, the signals of the operation mode, the set temperature, and the
fan speed are sent from the indoor electronic control P.C.board and memorized in the auto restart assembly.
When the main power is turned off and then turned back on, the unit restarts automatically in the memorized set conditions
approximately after 3 seconds.
NOTE:
a) When the unit operation is stopped with the Emergency Operation Switch, the unit does not restart after the power is
restored, since the signal of “Operation Stop” is memorized in the auto restart assy.
b) Operation details may not be memorized in case the signal is transmitted by the remote controller to turn the main
power OFF within 10 seconds after the power ON. .
c) When the unit operation is stopped with the remote controller before power failure, the unit does not restart until the
OPERATE/STOP (ON/OFF) button on the remote controller is pressed.
2. TIMER SHORT MODE
For service, set time can be shortened by short circuit of JPG and JPS on the electronics control P.C. board.
The time will be shortened as follows.
3-minute delay : 3-minute ➔ 3-second.
AUTO START : 1 hour ➔ 1-minutes
Short the connector during the timer mode.
AUTO STOP : 1 hour ➔ 1-minutes
}
3. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be
modified according to the indoor unit number.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below :
NOTE : For remodeling, take out the
batteries first.
After finish remodeling, put
back the batteries then
push the RESET-button.
The P.C.board has the print “J1” and “J2”. Jumper wires are mounted to each “J1” and “J2”. Cut “J1” and “J2” according to
the number of indoor unit as shown in Table 1.
After modification, push the RESET button near the MIN-button on the remote controller.
Table.1
No.1
No.2
No.3
No.4
unit
unit
unit
unit
1 unit operation
No modification
2 unit operation
Same as at left
Cut J1
3 unit operation
Same as at left
Same as at left
Cut J2
4 unit operation
Same as at left
Same as at left
Same as at left
Cut both J1 and J2
Note : At power supply failure or installation, indoor unit deletes the memory about remote controller. When the
power supply is turned on and indoor unit receives the first signals from the remote controller, the remote
controller number is designated as the indoor unit number. Therefore at and after the second time indoor
unit accepts the remote controller of the initial setting number.
At setting-error, turn the power supply off to cancel the individual operation, and then turn the power supply
on to restart the setting.
30
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11
Page 31
TROUBLESHOOTING
MS09NW, MS12NN, MS15NN, MS17NN
11-1 Cautions on troubleshooting
11-1-1 Before troubleshooting, check the followings:
1) Check the power supply voltage.
2) Check the indoor/outdoor connecting wire for mis-wiring.
11-1-2 Take care the followings during servicing.
1) Be sure to unplug the power cord before removing the front panel, the cabinet, the top panel, and the P.C. boards.
2) When removing the P.C. board, hold the edge of the board with care NOT to apply stress on the components.
3) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.
11-1-3 Troubleshooting procedure
1) First, check if the Operation Indicator lamp on the indoor unit is flashing to indicate an abnormality. To make sure,
check the abnormality indication for 2 or 3 times before starting service work.
2) If the P.C. board is supposed to be defective, check the copper foil pattern for disconnection and the components for
bursting and discoloration.
3) When troubleshooting, refer to the flow chart and the check table on page 32.
11-1-4 How to replace batteries
Weak batteries may cause the remote controller malfunction.
In this case, the remote controller can not be repaired only by the battery replacement. To operate the remote controller normally, discharge the remote controller in the following order.
The remote controller has a reset button. After installing new batteries, press the reset button with tip end of ball point
pen or the like, and then use the remote controller.
31
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Page 32
11-2 Instruction of troubleshooting
Indoor unit operates. Outdoor unit
doesn’t operate.
Outdoor unit
operates in
only Test
Run mode.
Check room
temperature
thermistor.
Indoor unit
dosen’t
receive the
signal from
remote
controller.
Outdoor unit
does not
operate even
in Test Run
mode.
Refer to B
”Check of
receiver P.C.
board” on
page 35.
Refer to D
“Check of
outdoor unit”
on page 36.
11-2-1 troubleshooting check table
Operation Indicator
Start
MS12NN
MS15NN
MS17NN
When the
remote controller
is pressed or
when the
Emergency
operation switch
is pressed,the
fan does not
rotate,with
Operation indicator lamp on.
Operation monitor lamp on
the indoor unit is flashing
on and off.
2-time flash
2.5-second OFF
Indoor unit doesn’t
receive the signal
from remote controller.
Also, operation
monitor lamp
doesn’t flash,
when the emergency operation
switch is pressed.
MS09NW only
3-time flash
2.5-second OFF
Refer to C “Check
of indoor electric
control P.C. board”
on page 36.
Cause:Indoor unit
2-times-Room temperature/Indoor coil thermistor trouble.
3-times-Indoor fan motor trouble
Refer to A
“Check of indoor
fan motor” on
page 34.
Check indoor coil
thermistor. Refer
to“Test point diagram and voltage”
on page 37 and 38.
Check room temperature.
Refer to“Test point diagram and voltage” on
page 37 and 38.
Look at the left lamp flash for the self check table.
w Before taking measures make sure that the symptom reappears, for accurate troubleshooting.
Self check table
NO.
Abnormal
point
Indoor coil
thermistor
1
Room
temperature thermistor
Indication
2-time flash
Outdoor unit
does not run.
3-time flash
Indoor fan
motor
2.5-second OFF
32
Detect method
Repair
● Check thermistor calibration
Detects Indoor coil/room tem- ● Reconnect connector
● Check indoor board
perature thermistor short or
open circuit every 2 seconds
during operation.
2.5-second OFF
MS09NW only
2
Symptom
Indoor fan
repeats 12 seconds ON and 3
minutes OFF.
When the indoor
fan breaks, the
fan keeps stopping.
When rotational frequency
feedback signal is not emit
during 12-second indoor fan
operation
● Disconnect connector CN211 and then
check connector CN121 2 - 3 to make
sure rotational frequency feedback signal
of 1.5V or over exists.
● Check indoor electronic control P.C.
board.
● Check indoor fan motor
● Reconnect conector
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MS09NW, MS12NN, MS15NN, MS17NN
11-2-2 Trouble criterion of main parts
Check method and criterion
Part name
Room
temperature
thermistor
Figure
Measure the resistance with a tester.
(Part temperature 50°F ~ 86°F)
Indoor coil
thermistor
Normal
Abnormal
8kΩ ~ 20kΩ
Opened or short-circuited
Measure the resistance between the terminals with a tester.
(Coil wiring temperature14°F ~ 104°F)
Normal
Compressor
09NW
12NN
15NN
17NN
C-R
0.8~1.1Ω
1.9~2.4Ω
1.4~1.9Ω
1.4~1.8Ω
C-S
1.9~2.4Ω
2.7~3.4Ω
2.4~3.0Ω
2.3~2.9Ω
Abnormal
Opened or
short-circuited
Motor part
Measure the resistance between the terminals with a tester.
(Coil wiring temperature50°F ~ 86°F)
Normal
09NW
WHT-BLK
76~83 Ω
BLK-RED
70~76 Ω
Abnormal
Opened or
short-circuited
09NW
WHITE
RED
Indoor fan
motor
Sensor part
Measure the voltage Power ON.
BLK
Normal
Abnormal
09NW
GRY
BRN-YLW
4.5 ~ 5.5V
YLW-GRY
(When fan revolved one time)
0V➔5V➔0V (Approx.)
BRN
Remain 0V or 5V
Normal
Motor part
YLW
12/15NN
17NN
WHT-BLK
67~73Ω
53~59Ω
BLK-YLW
9~9.8Ω
10~12Ω
YLW-BLU
4.9~5.5Ω
4.6~5.0Ω
BLU-BRN
5.8~6.4Ω
5.4~6.0Ω
BRN-RED
28~32Ω
36~40Ω
Abnormal
1
2
3
BLK
YLW
Opened or
short-circuited
BLU
BRN
RED
F
ORN
09NW
Measure the resistance between the terminals with a tester.
(Coil wiring temperature14°F ~ 104°F)
WHT
BLK
RED
Normal
Outdoor fan
motor
12/15/17 NN
1
2
3
09NW
12/15/17NN
WHT-BLK
55~68Ω
102~126Ω
BLK-YLW
114~141Ω
97~120Ω
P
Abnormal
WHT
Opened or
short-circuited
12/15/17 NN
BLK
P
RED
ORN
WHT
Measure the resistance between the terminals with a tester.
(Part temperature 50°F ~ 86°F)
Vane motor
Normal
Abnormal
09NW
12/15/17NN
282 ~ 305Ω 358 ~ 387Ω
Opened or short-circuited
33
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A Check of indoor fan motor
Turn OFF power supply.
Check connector (Fan motor) visually.
Inodoor fan does not operate.
No
No
Are lead wires connected?
Is soldered point nomal?
Yes
Yes
Reconnect lead wires
Resolder it.
Disconnect lead wires from connector (Fan motor) on indoor electronic control P.C. board.
Measure resistance between lead wires
No.1 and No.3 and then No.2 and No.3 (09NW)
No.1 and No.4 and then No.3 and No.4 (12/15/17NN)
{
12/15/17NN
No
(others)
}
Replace indoor electronic control
P.C. board.
Is resistance 0 (short circuit) or ∞ (open circuit)?
Yes ( 0 or ∞ )
09NW
Repair indoor fan motor.
No
34
Insert screwdriver into air outlet to
rotate indoor fan motor slowly for 1
revolution or over, and measure
2.
voltage between CN 121 1~2
Does voltage repeat 0V
DC and more than 5V?
Yes
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B Check of receiver P.C. board
Indoor unit operates by pressing the Emergency operation switch, but does not operate with the remote controller.
Check the model name of remote
controller.
Is LCD display on remote controller visible?
No
Replace batteries.(see page 31.)
(not clear)
Yes
Remove batteries and then set them back.
Check if the unit operates with remote
controller.
Does the unit operate with remote
controller?
No
Turn a radio to AM and press switch on
remote controller.
Yes
No
Is noise heard from radio?
OK
Replace remote controller.
Yes
Are there any fluorescent lights of
inverter or rapid-start type within
the range of 3.28ft?
Yes
● Re-install the unit away from lights.
● Attach a filter on receiving part.
No
MS12/15/17NN
MS09NW
No
The connector connecting
Receiver P.C. board and Micom
P.C. board is properly fixed.
Connect properly.
Yes
Replace Receiver P.C. board.
No
The unit receives signal of Operate
ON/OFF with remote controller,
and emits a beep tone.
Yes
END
Connect properly
No
The connecer of Auto Restart Assy
is properly fixed.
Yes
Replace Auto Restart Assy.
Replace Auto Restart Assy.
No
The unit receives signal of Operate
ON/OFF with remote controller,
and emits a beep tone.
Yes
END
Reolace Micom P.C. board.
No
The unit receives signal of Operate
ON/OFF with remote controller,
and emits a beep tone.
Yes
END
35
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C Check of indoor electronic control P.C. board
The unit doesn’t operate with
the remote controller.
Also, the operation indicator
doesn’t light up by pressing the
emergency ON/OFF switch.
Replace fuse.
Trouble of indoor electronic control P.C. board.
Yes
Yes
No
Is fuse(F11)blown?
Check both “parts side”and “pattern
side wof indoor electronic control P.C.
board visually
1.Pull out power supply
cord.
2.Measure resistance
between CN201
1 on electronic control P.C. board and N
on the terminal block
with a tester.
Be sure to check both fuse
and varistor in any case.
Is there resistance
(Approx.0Ω)
No
Trouble of fuse(F12)
Is varistor(NR11)burnt?
No
CN201
Yes
1
3
Replace varistor.
L1
N Terminal
block
D Check of outdoor unit
Compressor and outdoor fan do not operate.(Only indoor fan operates.)
Start
Press Emergency operation switch.
3-minute time delay works.
Test mode operates for 30 minutes.
Check resistance to terminal block of outdoor unit. Is
there 115V(MS09NW), 208/230V(MS12/15/17NN) to
terminal block between L1 - N (MS09NW), L1 - L2
(MS12/15/17NN)?
No
Check the indoor, outdoor connection and
respective power supply.
No
Check voltage to terminal block of indoor unit. Is there
12V to terminal block between 2 - 1 ?
No
Check the outdoor fan motor, compressor, relay, and
wiring.
36
No
Replace indoor electronic control P.C.
board.
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Page 37
TEST POINT DIAGRAM AND VOLTAGE
MS09NW
Indoor electronic control P.C. board
TAB 12
CN201 No.1
}
Power supply input
AC115V
Varistor(NR11)
Fuse AC250V 3.0A
Room temperature
thermistor (RT11)
Indoor coil
thermistor (RT12)
Timer short mode
point
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12)
32 50 68 86 104 122 140
F
37
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TEST POINT DIAGRAM AND VOLTAGE
MS12NN, MS15NN, MS17NN
Indoor electronic control P.C. board
}
Fan motor power supply
Me Lo
Hi
8 7 5 6 4
3
2
1
Varistor(NR11)
Fuse AC250V 3.0A
CN201
}
Power supply input AC115V
JP7
+
JP9
--
JP11
+
JP24
--
}
}
DC12V
DC5V
JPS
Time short mode point
JPG
CN112 Indoor coil thermistor (RT12)
CN111 Room temperaure thermistor (RT11)
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12)
32 50 68 86 104 122 140
F
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Page 39
DISASSEMBLY INSTRUCTIONS
NOTE:
w on the wiring diagram shows the terminals with a lock mechanism, so it
cannot be removed when you pull the lead wire. Be sure to pull the wire by
pushing the locking lever (projected part) of the terminal with a finger.
1 Slide the sleeve.
2 Pull the wire while pushing
the locking lever.
12-1 MS09NW
INDOOR UNIT
OPERATING PROCEDURE
PHOTOS
1. Removing the front panel
(1) Remove the screws caps of the front panel.
Remove the screws.
(2) Pull the panel down to your side slightly and unhook the
catches at the top.
Photo 1
Front panel
Screw
2. Removing the electronic control P.C. board and the
display P.C. board.
(1) Remove the front panel. (Refer to 1)
(2) Remove the screw of the electrical cover.
Remove the electrical cover.
(3) Disconnect the room temperature thermistor and the connector from the indoor coil thermistor.
(4) Remove the terminal cover.
Remove the screw of the terminal block.
(5) Disconnect all the connectors on the electronic control P.C.
board.
(6) Disconnect the white lead wire and the black lead wire from
52C relay.
(7) Remove the electronic control P.C. board and the display
P.C. board.
Photo 2
Room temperature
thermistor connector
Indoor electronic
control P.C.
board
Terminal block
cover
Terminal block
cover screw
39
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OPERATING PROCEDURE
PHOTOS
3. Removing the electrical box
(1)
(2)
(3)
(4)
Remove the front panel. (Refer to 1)
Remove the electrical cover.
Disconnect the connector of the indoor coil thermistor.
Disconnect the motor connector (CN211) and the vane
motor connector (CN151) on the electronic control P.C.
board.
(5) Unhook the catches (both upper and lower), remove the
electrical box.
4. Removing the vane motor
(1) Remove the front panel.
(2) Remove the screw of the vane motor, disconnect the connector.
(3) Remove the vane motor.
Photo 3
Vane motor screw
Drain hose
Vane motor
5. Removing the line flow fan and the indoor fan motor
(1) Remove the front panel. (Refer to 1)
(2) Disconnect the connector from the vane motor.
(3) Pull out the drain hose from the nozzle assembly, remove
the nozzle assembly.
(4) Lifting the left side of the heat exchanger, remove the electrical box.
(5) Remove the fixture of the fan motor.
(6) Remove the line flow fan and the fan motor.
Photo 4
Fan motor
catches
Fan motor
fixture
40
Indoor coil
thermistor
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Page 41
12-2 MS12NN, MS15NN, MS17NN
INDOOR UNIT
OPERATING PROCEDURE
PHOTOS
1. Removing the front panel
(1) Remove the screw caps at the bottom of the front panel.
Remove the screws.
(2) Pull the down of the front panel to your side slightly and
unhook the catches at the top of the front panel.
Photo 1
Front panel
Screws
2. Removing the electronic control P.C. board
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Remove the front panel. (Refer to 1)
Remove the screw, remove the electrical cover.
Remove the elect cover.
Remove the screw on the terminal block.
Unhook the catch of the lamp holder.
Remove the receiver holder.
Disconnect the connectors and the lead wire from 52C
relay on the electronic control P.C. board and remove the
ground and the indoor coil thermistor.
(8) Remove the electronic P.C. board.
Photo 2
Ground
Indoor coil thermistor
Screw
Terminal
block
screw
Electrical
P.C. board
41
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OPERATING PROCEDURE
PHOTOS
3. Removing the indoor fan motor and the line flow fan
(1) Remove the front panel.
(2) Remove the electrical box.
(3) Unhook the catch on the both sides of the nozzle assembly.
(4) Remove the nozzle assembly.
(5) Remove the screws of the bearing support.
(6) Remove the screw of the heat exchanger and unhook the
catch.
(7) Lifting the heat exchanger, remove the bearing support.
(8) Remove the motor support.
(9) Loose the screw fixing the line flow fan, remove the line
flow fan.
(10) Remove the screws of the side cover, remove the fan
motor.
Photo 3
Heat exchanger
Catch
Heat exchanger
screw
Bearing support
screws
Photo 4
Indoor fan motor
Fan
motor
screws
Line flow fan
42
Motor band
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12-3 MU09NW
OUTDOOR UNIT
OPERATING PROCEDURE
PHOTOS
1. Removing the cabinet
(1)
(2)
(3)
(4)
Remove
Remove
Remove
Remove
insides.
(5) Remove
(6) Remove
screws securing the top panel.
the screw securing the service panel.
screws securing the cabinet.
the service panel,and remove the screw from the
the top panel.
the cabinet.
Photo 1
Screw for
service panel
Service
panel
Screw for
top plate
Screws for
cabinet
Photo 2
Screw for
top plate
Screw for
cabinet
2. Removing the propeller fan and the outdoor fan motor
(1) Remove the cabinet.(Refer to 1)
(2) Remove the propeller fan nuts.
(3) Remove the propeller fan.
NOTE:Loose the propeller fan in the rotating direction for
removal.
When attaching the propeller fan,align the mark on the propeller fan and the motor shaft cut section.
Set the fan in position by using the cut on the shaft and
the mark on the fan.
(4) Remove lead clamps and disconnect the outdoor fan motor
lead wires.
(5) Remove screws fixing the fan motor.
(6) Remove the outdoor fan motor.
Photo 3
propeller fan
Set screws for
outdoor fan motor
Lead clamps
Outdoor
fan motor
Propeller fan nut
43
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Page 44
OPERATING PROCEDURE
3. Removing the compressor
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Remove the lead clamps.
Remove the screws fixing the relay panel.
Remove the screw fixing the service port.
Remove the terminal cover.
Pull out the lead from the compressor terminal.
Remove the overcurrent relay.
Remove the compressor nuts.
Detach the suction pipe welded section and discharge pipe
welded section .
PHOTOS
Photo 4
Terminal cover
Discharege pipe
NOTE
● Before using a torch, reclaim gas from the pipes until the pressure gauge shows 0 PSIG.
● Use the torch under the condition that gas can be released
even when the inner pressure rises by heat.
●Reclaim all refrigerant in an environmentally acceptable
manner.
44
compressor
Suction pipe
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Page 45
12-4 MU12NN, MU15NN, MU17NN
OUTDOOR UNIT
OPERATING PROCEDURE
1. Removing the cabinet
PHOTOS
Photo 1
(1) Remove the screws of the cabinet.
(2) Hold the bottom of the cabinet on the both side to remove
the cabinet.
Screws
Service
panel
Photo 2
Screws
2. Removing the electrical parts
(1) Remove the service panel and the cabinet.
(2) Remove the following parts.
•Compressor capacitor (C1)
•Outdoor fan capacitor (C2)
•Terminal block
Photo 3
Compressor capacitor
45
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Page 46
OPERATING PROCEDURE
3. Removing the outdoor fan motor
PHOTOS
Clamp
Photo 4
Connector
(1) Remove the cabinet. (Refer to 1)
(2) Disconnect the connector and remove the clamp of fan
motor lead wire.
(3) Remove the propeller nut and remove the propeller fan.
(4) Remove screws securing the fan motor.
Soundproof felt
Propeller fan
4. Removing the compressor
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Remove the cabinet. (Refer to 1)
Remove the soundproof felt.
Remove the terminal cover on the compressor
Disconnect lead wires from the glass terminal of the compressor.(Refer to 2)
Release gas from the refrigerant circuit.
Disconnect the welded part of the discharge pipe.
Disconnect the welded part of the suction pipe.
Remove nuts securing the compressor.
Remove the compressor.
Propeller fan nut
Photo 5
Discharge
pipe
Suction
pipe
NOTE
●Reclaim all refrigerant in an environmentally acceptable
manner.
Compressor
Compressor nuts
46
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13
Page 47
PARTS LIST
INDOOR UNIT
STRUCTURAL PARTS
MS09NW (WH)
5
1
4
6
OPTIONAL PARTS
(See page 55)
2
3
Q'ty / set
Symbol in
Wiring Diagram
No.
Parts No.
Parts Name
1
E02 268 000
FRONT PANEL(WH)
1
2
E02 151 010
GRILLE(WH)
1
3
E02 164 100
AIR FILTER
2
4
E02 166 234
BOX(WH)
1
5
E02 151 970
INSTALLATION PLATE
1
6
E02 166 067
SCREW CAP(WH)
2
INDOOR UNIT
HEAT EXCHANGER
MS09NW (WH)
Remarks
(Drawing No.)
MS09NW
(WH)
1PC/SET
2PCS/SET
1
3
2
Q'ty / set
Parts Name
Symbol in
Wiring Diagram
Remarks
(Drawing No.)
No.
Parts No.
1
E02 155 620
INDOOR HEAT EXCHANGER
1
2
E02 151 666
UNION(GAS)
1
{3/8
3
E02 151 667
UNION(LIQUID)
1
{1/4
MS09NW
(WH)
47
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Page 48
INDOOR UNIT
ELECTRICAL PARTS
MS09NW (WH)
15
9
10
7
8
11
13
6
3
5
1
2
4
12
Part numbers that are circled are not shown in the illustration.
Q'ty / set
Remarks
(Drawing No.)
No.
Parts No.
1
E02 199 520
NOZZLE(WH)
1
2
E02 166 040
VANE(WH)
1
3
E02 141 702
DRAIN HOSE
1
4
E02 151 303
VANE MOTOR
MV
1
5
E02 268 300
INDOOR FAN MOTOR
MF
1
RC 4W19-
6
E02 151 505
RUBBER MOUNT
2
2PCS/SET
7
E02 151 302
LINE FLOW FAN
1
8
E02 151 509
BEARING MOUNT
9
E02 151 308
ROOM TEMPERATURE THERMISTOR
RT11
1
10 E02 151 307
INDOOR COIL THERMISTOR
RT12
1
11 E02 268 375
TERMINAL BLOCK
TB
1
12 E02 268 450
ELECT CONTROL P.C.BOARD
1
13 E02 001 504
SLEEVE BEARING
1
14 E02 268 382
FUSE
15 E02 164 081
ELECTRICAL BOX
16 E02 268 350
INDOOR FAN CAPACITOR
17 E02 268 385
VARISTOR
18 E02 151 468
RECEIVER
1
19 E02 268 452
AUTO RESTART
1
48
Parts Name
Symbol in
Wiring Diagram
MS09NW
(WH)
FAN GUARD
1
F11
1
250V/3.0A
1
C11
1
NR11
1
5.0µF / 250VAC
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Page 49
OUTDOOR UNIT
STRUCTURAL PARTS
MU09NW
2
5
10
1
8
9
11
3
4
7
6
Part numbers that are circled are not shown in the illustration.
Q'ty / set
Parts Name
Symbol in
Wiring Diagram
No.
Parts No.
1
E02 096 232
CABINET
1
2
E02 085 297
TOP PANEL
1
3
E02 085 521
FAN GUARD
1
4
E02 085 245
SERVICE PANEL
1
5
E02 085 630
OUTDOOR HEAT EXCHANGER
1
6
E02 268 900
COMPRESSOR
7
E02 268 506
8
9
MC
MU09NW
Remarks
(Drawing No.)
1
KH122WES
COMPRESSOR RUBBER SET
3
3RUBBER
E02 096 662
STOP VALVE(LIQUID)
1
{ 1/4
E02 096 661
STOP VALVE(GAS)
1
{ 3/8
10 E02 085 515
MOTOR SUPPORT
1
11 E02 268 290
BASE
1
12 E02 158 936
CAPILLARY TUBE
1
13 E02 097 933
MUFFLER
1
14 E02 124 340
CONTACTOR
52C
{0.12 o {0.063 o 47-1/4
1
49
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Page 50
OUTDOOR UNIT
FUNCTIONAL PARTS AND ELECTRICAL PARTS
MU09NW
4
1
5
2
3
Q'ty / set
No.
Parts No.
Parts Name
Symbol in
Wiring Diagram
MU09NW
Remarks
(Drawing No.)
1
E02 085 501 PROPELLER FAN
2
E02 268 301 OUTDOOR FAN MOTOR
MF
1
RA6W23 -
3
E02 268 353 COMPRESSOR CAPACITOR
C1
1
55µF/220VAC
4
E02 268 351 OUTDOOR FAN CAPACITOR
C2
1
5.0µF/250VAC
5
E02 268 374 TERMINAL BLOCK
TB1
1
50
1
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Page 51
INDOOR UNIT
STRUCTURAL PARTS
MS12NN (WH)
MS15NN (WH)
MS17NN (WH)
1
5
3
OPTIONAL PARTS
(See page 55)
2
6
4
Part number that is circled is not shown in the illustration.
Q'ty / set
No.
Parts No.
Parts Name
Symbol in
Wiring Diagram
12NN(WH) 15NN(WH) 17NN(WH)
1
E02 270 000
FRONT PANEL(WH)
E02 271 000
FRONT PANEL(WH)
E02 272 000
FRONT PANEL(WH)
2
E02 138 010
GRILLE(WH)
1
1
1
3
E02 143 234
BOX(WH)
1
1
1
4
E02 141 100
AIR FILTER
2
2
2
5
E02 141 970
INSTALLATION PLATE
1
1
1
6
E02 143 067
SCREW CAP(WH)
3
3
3
E02 270 007
LAMP PANEL
1
E02 271 007
LAMP PANEL
E02 272 007
LAMP PANEL
1
7
1
1
1PC/SET
3PCS/SET
1
1
1
INDOOR UNIT
HEAT EXCHANGER PARTS
MS12NN (WH)
MS15NN (WH)
MS17NN (WH)
2
3
Q'ty / set
Symbol in
MS12NN, MS15NN, MS17NN
Wiring Diagram
(WH)
Remarks
(Drawing No.)
No.
Parts No.
1
E02 141 620
INDOOR HEAT EXCHANGER
1
2
E02 138 667
UNION(LIQUID)
1
{1/4
UNION(GAS)
1
{5/8
3
E02 138 666
Parts Name
Remarks
(Drawing No.)
MS
51
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Page 52
INDOOR UNIT
ELECTRICAL PARTS
MS12NN (WH)
MS15NN (WH)
MS17NN (WH)
12
11
9
18
5
5
8
7
4
3
19
1
2
13
20
10
17
Part numbers that are circled are not shown in the illustration.
Q'ty / set
No.
Parts No.
1
E02 138 520
NOZZLE(WH)
1
1
1
2
E02 143 040
VANE(WH)
1
1
1
3
E02 141 702
DRAIN HOSE
1
1
1
E02 270 300
INDOOR FAN MOTOR
MF
1
1
E02 272 300
INDOOR FAN MOTOR
MF
5
E02 001 505
RUBBER MOUNT
2
6
E02 268 452
AUTO RESTART
1
E02 270 450
ELECTRONIC CONTROL P.C. BOARD
1
E02 271 450
ELECTRONIC CONTROL P.C. BOARD
E02 272 450
ELECTRONIC CONTROL P.C. BOARD
8
E02 270 081
ELECTRICAL BOX
1
1
1
9
E02 141 302
LINE FLOW FAN
1
1
1
1
1
1
4
7
Parts Name
Symbol in
Wiring Diagram
MS
12NN(WH) 15NN(WH) 17NN(WH)
Remarks
(Drawing No.)
FAN GUARD
RA4W18 1
RA4W23 -
2
2
2PCS/SET
1
1
1
1
10 E02 141 303
VANE MOTOR
11 E02 138 329
DISPLAY P.C. BOARD
1
1
1
12 E02 141 509
BEARING MOUNT
1
1
1
13 E02 268 375
TERMINAL BLOCK
MV
TB
1
1
1
NR11
1
1
1
INDOOR FAN CAPACITOR
C11
1
1
1
6.0µF/250V
16 E02 268 382
FUSE
F11
1
1
1
250V 3.0A
17 E02 141 468
RECEIVER P. C. BOARD
1
1
1
18 E02 001 504
SLEEVE BEARING
1
1
1
19 E02 138 307
INDOOR COIL THERMISTOR
RT12
1
1
1
20 E02 138 308
ROOM TEMPERATURE THERMISTOR
RT11
1
1
1
14 E02 268 385
VARISTOR
15 E02 270 350
52
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Page 53
OUTDOOR UNIT
STRUCTURAL PARTS
MU12NN
MU15NN
MU17NN
17
11
12
10
4
8
1
3
15
2
16
9
5
7
6
Part numbers that are circled are not shown in the illustration.
Q'ty / set
Parts No.
1
E02 141 232
CABINET
1
15NN
1
17NN
1
2
E02 141 521
GRILLE
1
1
1
3
E02 270 245
SERVICE PANEL
1
1
1
E02 138 630
OUTDOOR HEAT EXCHANGER
1
1
E02 147 630
OUTDOOR HEAT EXCHANGER
E02 138 515
MOTOR SUPPORT
1
1
E02 139 515
MOTOR SUPPORT
E02 270 900
COMPRESSOR
MC
E02 271 900
COMPRESSOR
MC
E02 272 900
COMPRESSOR
MC
E02 270 290
BASE
4
5
6
7
Parts Name
Symbol in
Wiring Diagram
No.
E02 156 290
BASE
8
E02 270 301
OUTDOOR FAN MOTOR
9
E02 141 501
PROPELLER FAN
E02 270 353
COMPRESSOR CAPACITOR
10 E02 271 353
COMPRESSOR CAPACITOR
Remarks
(Drawing No.)
MU
12NN
1
1
RH167NHDT
1
RH207NHDT
1
1
1
1
1
1
1
1
1
1
RH231NHDT
1
MF
C1
25µF/370V
1
30µF/370V
1
E02 272 353
COMPRESSOR CAPACITOR
1
35µF/370V
11 E02 270 351
OUTDOOR FAN CAPACITOR
C2
1
1
1
3.0µF/440V
12 E02 270 374
TERMINAL BLOCK
TB
1
1
1
E02 140 936
CAPILLARY TUBE
13 E02 176 936
CAPILLARY TUBE
E02 077 937
CAPILLARY TUBE
{0.12 o {0.071 o 31-1/2
1
1
{0.12 o {0.079 o 27-9/16
{0.12 o {0.071o 21-5/8
1
14 E02 075 506
COMPRESSOR RUBBER SET
3
3
3
3RUBBER
15 E02 139 662
STOP VALVE(LIQUID)
1
1
1
{1/4
16 E02 150 661
STOP VALVE(GAS)
1
1
1
{5/8
17 E02 270 233
BACK PANEL
1
1
1
18 E02 096 932
ACCUMULATOR
1
1
1
19 E02 138 340
CONTACTOR
1
1
1
52C
53
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Page 54
ACCESSORY AND REMOTE CONTROLLER PARTS
MS09NW (WH)
2
MS12NN (WH)
MS15NN (WH)
MS17NN (WH)
1
Q'ty / set
No.
Parts No.
Parts Name
Symbol in
Wiring Diagram
MS09NW, MS12NN
MS15NN, MS17NN
(WH)
1
E02 268 426 REMOTE CONTROLLER
1
2
E02 141 083 REMOTE CONTROLLER HOLDER
1
54
Remarks
(Drawing No.)
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14
Page 55
OPTIONAL PARTS
1. REFRIGERANT PIPES
,
The air conditioner has flared connections its on indoor and outdoor sides.
Please use the optional extension pipe as follows.
Model
MS09NW
MS12NN
MS15NN
MS17NN
Part No.
Pipe length
MAC - 440PI
MAC - 441PI
MAC - 442PI
MAC - 443PI
MAC - 670PI
MAC - 671PI
MAC - 672PI
MAC - 673PI
MAC - 674PI
10ft
16ft
23ft
33ft
10ft
16ft
23ft
33ft
49ft
2. AIR CLEANING FILTER
Cross-section
Pipe size O.D
A-Gas
B-Liquid
Insulation
C 13/16
D 1-1/16
3/8
Additional
refrigerant
charge
R-22(Oz)
0
1
1/4
C 1-7/32
D 1-1/16
5/8
0
1
3
● AIR CLEANING FILTER removes fine dust of 0.01 micron from air by means of static electricity.
● Normal life of AIR CLEANING FILTER is 3 months. However, when it becomes dirty, replace it as soon as possible.
● Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet.
● DO NOT reuse AIR CLEANING FILTER even if it is washed.
● DO NOT remove or attach AIR CLEANING FILTER during unit operation.
Part No.
Model
MAC-1000FT
MS09NW
MAC-1100FT
MS12NN,MS15NN,MS17NN
3. DEODORIZING FILTER
●
●
●
●
DEODORIZING FILTER removes ammonia and hydrogen sulphide emitted from tobacco, and odors of pets.
Clean DEODORIZING FILTER every two weeks. If the filter is particularly dirty, clean the filter more often.
For cleaning, soak the filter in warm water for a while, and then wash and rinse it. Dry the filter in the shade thoroughly.
When the filter color is still dark even after cleaning, replace the filter with a new one.
Replace the filter at least once a year.
Part No.
Model
MAC-1500DF
MS09NW
MAC-1600DF
MS12NN,MS15NN,MS17NN
● DEODORIZING FILTER and AIR CLEANING FILTER can be attached on either side.
55
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Page 56
CCopyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD.
Issued in May 1997 NO. OB192 5042
New publication, effective May 1997.
Specifications subject to change without notice.
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024
Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904
www.mrslim.com
Specifications are subject to change without notice.