Mitsubishi Mr.Slim MS09NW User manual

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.
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3
1FEATURES
Models Cooling capacity SEER
MS09NW 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
MS12NN, MS15NN, MS17NN MU12NN, MU15NN, MU17NN
LCD wireless
remote controller
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 con-
trol 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 set-
tings to match room layout and the location of people. Also, you
can set the vane to swing automatically.
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 o321/16 o73/16 (HoWoD),
which used to be 143/16 o311/8 o53/8.
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 energy-
efficient rotary compressor results in lower operating costs and
longer service life.
SWING
1013/16
MS09NW
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2
PART NAMES AND FUNCTIONS
3
MS09NW, MS12NN, MS15NN, MS17NN
REMOTE CONTROLLER
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
TECHNICAL CHANGES
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INDOOR UNIT
MS09NW
Operation section
MS12NN
Emergency operation switch
Emergency operation switch
OUTDOOR UNIT
MU12NN
MU15NN
MU17NN
MU09NW
(When the front panel is opened)
MS09NW MS09NW
MS12NN, MS15NN, MS17NN MS12NN, MS15NN, MS17NN
MS12NN
MS15NN
MS17NN
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4
Notes w1 : Rating conditions (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, 75˚FWB
Operating Range
ITEM MODELS MS09NW MS12NN
Cooling capacity
Power consumption
EER [SEER]
INDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)
Min. ampacity
Fan motor
Airflow Lo—Me—Hi
Moisture removal
Sound level Lo-Me-Hi
Cond. drain connection O.D.
Dimensions
Weight
OUTDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)
Min. ampacity
Fan motor
Compressor
Refrigerant control
Sound level
Dimensions
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
Pipe size
Connection method
Between the indoor
& outdoor units
w1
w1
w1
Dry
Wet
W
D
H
Model
Winding resistance (at 68˚F) ½
W
D
H
Liquid
Gas
Indoor
Outdoor
Height difference
Piping length
Btu/h
W
V, phase, Hz
A
A
F.L.A
CFM
CFM
Pints/h
dB(A)
in.
in.
in.
in.
lbs
V, phase, Hz
A
A
F.L.A
R.L.A
L.R.A
dB(A)
in.
in.
in.
lbs
in.
in.
ft
ft
8,500
840
10.1 (10.2)
MS09NW
0.5
0.37
208-265-328
177-226-279
2.3
31-37-42
32-1/16
7-3/16
10-13/16
18
MU09NW
115, 1, 60
14
0.66
KH122WES
C-R 0.98 C-S 2.21
10
37
46
30-11/16
10-1/16
21-1/4
64
3/8
White
115, 1, 60
15
5/8
Munsell 5Y6.5/1
15
Capillary tube
Wireless type
12V DC
Not supplied (optional parts)
1/4
Flared
Flared
Max. 25
Max. 49
12,300/12,600
1,100/1,130
11.2/11.2 (11.3/11.3)
MS12NN
0.6
0.43
360-395-452
314-342-392
3.2
36-39-42
39-15/16
7-1/2
12-5/8
31
MU12NN
208/230, 1, 60
12
0.52
RH167NHDT
C-R 2.16 C-S 3.11
9
29
52
33-7/16
11/7/16
23-13/16
92
5/8
Cooling Maximum
Minimum
Indoor intake air temperature
95˚FDB, 71˚FWB
67˚FDB, 57˚FWB
Outdoor intake air temperature
115˚FDB
67˚FDB
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.)
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Notes w1 : Rating conditions (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, 75˚FWB
Operating Range
ITEM MODELS MS15NN MS17NN
Cooling capacity 
Power consumption 
EER [SEER]
INDOOR UNIT MODEL
External finish
Power supply
Max. fuse size (time delay)
Min. ampacity
Fan motor
Airflow Lo—Me—Hi
Moisture removal
Sound level Lo-Me-Hi
Cond. drain connection O.D.
Dimensions
Weight
OUTDOOR UNIT
External finish
Power supply
Max. fuse size (time delay)
Min. ampacity
Fan motor
Compressor
Refrigerant control
Sound level
Dimensions
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
Pipe size
Connection method
Between the indoor
& outdoor units
w1
w1
w1
Dry
Wet
W
D
H
Model
Winding resistance (at 68˚F) ½
W
D
H
Liquid
Gas
Indoor
Outdoor
Height difference
Piping length
Btu/h
W
V, phase, Hz
A
A
F.L.A
CFM
CFM
Pints/h
dB(A)
in.
in.
in.
in.
lbs
V, phase, Hz
A
A
F.L.A
R.L.A
L.R.A
dB(A)
in.
in.
in.
lbs
in.
in.
ft
ft
14,300/14,600
1,370/1,400
10.4/10.4 (10.5/10.5)
MS15NN
0.6
0.43
360-395-452
293-321-367
4.7
36-39-42
MU15NN
14
RH207NHDT
C-R 1.68 C-S 2.78
10
35
52
92
White
115, 1, 60
15
5/8
39-15/16
7-1/2
12-5/8
31
Munsell 5Y6.5/1
208/230, 1, 60
20
0.52
Capillary tube
33-7/16
11-7/16
23-13/16
Wireless type
12V DC
Not supplied (optional parts)
1/4
5/8
Flared
Flared
Max. 25
Max. 49
15,900/16,100
1,570/1,600
10.1/10.1 (10.2/10.2)
MS17NN
0.7
0.51
406-441-491
346-374-417
5.1
40-43-45
MU17NN
15
RH231NHDT
C-R 1.65 C-S 2.67
11
38
52
97
Cooling Maximum
Minimum
Indoor intake air temperature
95˚FDB, 71˚FWB
67˚FDB, 57˚FWB
Outdoor intake air temperature
115˚FDB
67˚FDB
When MS15NN indoor unit is operating with MUM30NN outdoor unit connected.
(Please refer to the manual No.OB202 for MUM30NN.)
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25
MAX. HEIGHT DIFFERENCE
Models
MS09NW
MS12NN
MS15NN
MS17NN
Additional piping
Max. length : ft
A
49
Gas
[ 3/8

[ 5/8
Piping size O.D. : in. Length of connecting pipe : in.
Liquid

[ 1/4
Indoor unit
16-15/16
Outdoor unit
0
MAX. REFRIGERANT PIPING LENGTH
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DATA
5
Models
Indoor air Outdoor intake air DB temperature(˚F)
MS09NW
71
67
63
71
67
63
71
67
63
71
67
63
TC
10.4
9.9
9.3
15.4
14.6
13.7
17.9
16.9
15.9
19.7
18.7
17.5
SHC
5.9
6.9
7.7
11.6
10.4
8.9
9.2
11.0
12.5
10.2
12.1
13.7
TPC
0.75
0.71
0.67
1.01
0.95
0.90
1.25
1.18
1.12
1.42
1.34
1.28
TC
9.7
9.2
8.6
14.4
13.6
12.7
16.7
15.8
14.7
18.4
17.4
16.3
SHC
5.5
6.4
7.2
8.3
9.7
10.7
8.6
10.2
11.6
9.5
11.3
12.7
TPC
0.82
0.78
0.74
1.10
1.05
1.00
1.37
1.30
1.24
1.56
1.48
1.42
TC
9.1
8.5
8.0
13.5
12.6
11.8
15.7
14.6
13.7
17.3
16.1
15.1
SHC
5.2
6.0
6.7
7.8
8.9
10.0
8.1
9.5
10.8
8.9
10.5
11.9
TPC
0.88
0.84
0.80
1.19
1.13
1.08
1.47
1.40
1.34
1.68
1.60
1.53
TC
8.5
7.9
7.3
12.6
11.7
10.8
14.6
13.6
12.5
16.1
15.0
13.8
SHC
4.8
5.5
6.1
7.3
8.3
9.1
7.5
8.8
9.8
8.3
9.7
10.8
TPC
0.93
0.89
0.86
1.25
1.20
1.15
1.55
1.48
1.43
1.77
1.70
1.63
TC
7.8
7.3
6.6
11.6
10.8
9.8
13.4
12.5
11.4
14.8
13.8
12.6
SHC
4.4
5.1
5.5
6.7
7.6
8.3
6.9
8.1
8.9
7.7
8.9
9.8
TPC
0.97
0.93
0.89
1.30
1.25
1.20
1.61
1.55
1.48
1.84
1.78
1.70
IWB
(˚F)75 85 95 105 115
MS12NN
MS15NN
MS17NN
Notes 1.IWB : Intake air wet-bulb temperature.
TC : Total Capacity (x103 Btu/h), SHC : Sensible Heat Capacity (x103 Btu/h)
TPC : Total Power Consumption (kW)
2.SHC is based on 80˚F of indoor intake air DB temperature.
Models Refrigerant piping length (one way)
MS09NW
MS12NN
MS15NN
MS17NN
1.0
1.0
1.0
1.0
25ft (std)
0.954
0.954
0.954
0.954
40ft
0.927
0.927
0.927
0.927
49ft
1. PERFORMANCE DATA
1) COOLING CAPACITY
2) COOLING CAPACITY CORRECTIONS
MS09NW, MS12NN, MS15NN, MS17NN
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2. PERFORMANCE CURVE
NOTE : A point on the curve shows the reference point.
MS09NW MS12NN
MU09NW MU12NN
MS15NN MS17NN
MU15NN MU17NN
71
67
63
71
67
63
71
67
63
71
67
63
Total power consumption (kW) Total capacity ( o10 Bw/h)
Outdoor intake air DB temperature (¡F) Outdoor intake air DB temperature (¡F)
Indoor intake air WB temperature (¡F)
Indoor intake air WB temperature (¡F)
Indoor intake air WB temperature (¡F)
Indoor intake air WB temperature (¡F)
Cooling capacity
SHF at rating condition = 0.7
= 279CFM
= 0.26
Airflow
Bypass Factor
Cooling capacity
SHF at rating condition = 0.71
= 392CFM
= 0.17
Airflow
Bypass Factor
12
10
8
6
1.2
65 75 85 95 105 115 67 75 85 95 105 115
0.8
0.6
Total power consumption (kW) Total capacity ( o10 Bw/h)
16
14
12
10
8
2
1
71
67
63
71
67
63
71
67
63
71
67
63
Indoor intake air WB temperature (¡F)
Indoor intake air WB temperature (¡F)
Cooling capacity
SHF at rating condition = 0.7
= 367CFM
= 0.22
Airflow
Bypass Factor
67 75 85 95 105 115
Total power consumption (kW) Total capacity ( o10 Bw/h)
18
16
14
12
2
1
Outdoor intake air DB temperature (¡F)
Indoor intake air WB temperature (¡F)
Indoor intake air WB temperature (¡F)
Cooling capacity
SHF at rating condition = 0.65
= 417CFM
= 0.24
Airflow
Bypass Factor
67 75 85 95 105 115
Total power consumption (kW) Total capacity ( o10 Bw/h)
20
18
16
14
2
1
Outdoor intake air DB temperature (¡F)
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