Mitsubishi Electric MS09EW Guide

SERVICE & PARTS MANUAL
Wireless type
Models
INDOOR UNlT
MSOSEW
MS12EN
OUTDOOR UNlT

MS-O9DW + MSOSEW
1 . lndoor unit model changed.
2. Compressor changed. KH-122WEV
-+ KH-122WES
3. New model has Auto restartfunction.
/ 1 1
MS-12/15DN -+ MS12/15EN
1
. lndoorfront panel changed.
2. Suction linechanges from 1/2
0. D. to 5/8 0. D .
3. Compressor of MS15EN changed. RH207NAB -t RH-207NFL
4. New model has Auto restartfunction. Cut the jumper wire to work the function.
I
CHANGE POINTS
MSMI8EW
1 . lndoor unit model changed.
2. Compressor changed.KH-122WEV
-. KH-122WES
3. New model has Auto restartfunction. Cut the jumper wire to work the function.
Modelindication of wiring diagram and spec. name plate etc. chanegd.

FEATURES
LCD wireless
remote controller
Models Cooling Capacity
MSOSEW 8,800 Btu/h
MS12EN 12,300/12,600Btu/h
MS15EN 14,300/14,600Btu/h
MSMI8EW 8,400/8,400 x 2Btu/h
1. NEW "I FEEL CONTROL" IN OUR LCD WIRELESS RER
SEER
10.7
10.6/10.6
10.0/10.0
10.0/10.0x2
dOTE CONTROLLER
Mitsubishi Electric's new wireless remote controller incorporatesa number of advanced features that provide even greater
control andease-of-use.
It has a liquidcrystaldisplay which indicatessuch informationas mode, fan speedandtemperature
selectedas well as thetimer settingandtime remaining.
It isalso equippedwith "I Feel Control", aunique MitsubishiElectric
feature that allows the user toadjust the temperature to exactly the level he or she wants simply by tapping the buttonthat
describespresentconditions
: "Too Cool" "Too Warm", or "Okay".Theoptimumtemperatureset thisway isthen memorized
for immediate recallwhenever the air conditioner is used again. And what's more, the new controllerhas been made more
compact and easy to handle than even before.
2. A VARIETY OF MICROPROCESSOR-CONTROLLED FUNCTION
Automatic ON/OFF Timer
Convenienttimer function includesAuto Start, Auto Stop, bothcan be
set 1-12 hours.
Auto Stop (Night Setback) Mode.
This moderaisesthe temperature setting by 1"Fafter one hour, and by
another 1
"Fthe nexthalf hour. When 1-1/2 hourshave passed, the air
conditioner is running at a setting that is 2°F higher, thus preventing
excessive cooling.
Automatic Fan Speed Control
When there's a large difference between the set temperature and
existing roomtemperature, the fan speed automatically adjuststo HI.
As the temperature differentialdecreases, the Fan speed shifts down
automatically to MED and LO. Operation is almost whisper quiet.
Adjustable Change Vane System
Choose the air direction that suits your needs.
Keep it in a horizontal position to achieve uniform
aimow.
During cooling
Restart Function
The restart function restarts the equipment when power is restored
following an outage. 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.
76
I I
Start 1 2
(Hour)

1 INDOOR UNIT 1
ll i 'ii
I
1
Showsthe room temperaturefor I FEEL CONTROL operation
R- R- 0 Shows that the unlt is in operation for the set
temperature (when 3'F or more difference exlsts
between set temperature and room temperature).
D
* Shows that the room temperature is approaching
the set temperature (diierence from set temper-
ature
is 2 to 3'F)
D D 0 Shows that the room temperature has almost
reached the set temperature (difference from set
temperature
is 2°F or less).
I
POWER lamp L~ghtsby turning POWER SWITCH on
2
( OUTDOOR UNIT /
I
Receives signal from the wireless remote controller.
Use only for TEST RUN at
installation or when the WIRELESS
REMOTE CONTROLLER
maVunctlons
Do not press thls button dunng
normal operanon,
or the operahon
SODS.
Removes water produced during cooling.
J
I Located on the back and side.
I

--
Once the controls are set, the same operatlon mode can
coNTRoLLE~ be repeated by s~mplyturning the POWER sw~tchON
- --
When batteries are replaced all of the controls memorized should
be canceled, and
' I FEEL-. - ' mode is automatically selected.
Sends an inflared signal
to control the air condi-
tioner.
1
This button is for setting of desired room temperature.
@button is to raise the temperature
@button is to lower the temperature by 2°F each time
the button pressed.
(Refer to page
17)
This figure shows
cool mode display.
When you feel "TOO WARM" or "TOO COOL" and
"OKAY (comfort) during the operation of the unit, the
desired temperature can be changed by pressing the
following buttons.
I I
TO0 WARM
Press when you feel too warm.
0
while the unit is operating. That
- comfort will be maintained.
TOO COOL
Press when you feel too cool.
I in
A selector for automatic ON/OFF of the air conditioner.
NORMAL: Continuousoperation regardlessofthetimer
setting.
AUTO STOP: 12hr Automatic OFF Timer.
AUTO START: 12hr Automatic ON Timer.
--
Switches over the air conditioner power ON/OFF.
Turns ON when pressed once and turns OFF when
pressed again.
Usethis buttonto set the tmefor timer controloperatlon
@ Increase by one hour
@ Decrease by one hour each tme the button is
pressed

I INDOOR UNIT ]
A
Provided on the front and top.
I FEEL MONFTOR
/ Showsthe roomtemperaturefor I FEEL CONTROL operatton I
m b Shows that the unit is in operation for the set
temperature (when
3'F or more difference exists
between set temperature and room temperature)
D
Shows that the room temperature k approaching
the set temperature (difference from set temper-
ature
is 2 to TF)
I I
D D Shows that the room temperature has almost
reached the set temperature (difference from set
temperature
is 2'F or less).
- POWER
OPERATION lamp
Lightswhen POWER
is turned ON.
I OUTDOOR UNIT ]
Use only for TEST RUN at
REMOTE CONTROLLER
Do not
pres; th~sbutton dunng
normal operabon, or the operation
stops
I Removes water producted during cool in^.
I
Located on the back and side.
I

-
MODELS
ITEM
Cool~nacawacitv*
' Btu/h
-. ,
I I I
/ power supply V.Hz,C / 115,60, 1 1
MSOSEW
8.800
Power consumption*
' W / 830
EER[SEER)
INDOOR UNIT
Externalfinish
/ Fan motor F.L.A / 0.3 1
MSMISEW
850
10.6[10.7)
MSO9EW
Max.fusesize (timedelay) A
/ 15
SINGLE
1,700
Min. amoacity
I Cond.drain conn. O.D. in. 1 5/8 1
DOUBLE
White
9.9(10.0)
0.4
Airflow Lo-Me-Hi
Dimensions
9.9[10.0)
IW in. I 31-11'8 I
8.400
MSO9EWx2
Dn/ CFM
8.400~2
180-205-265
/ H in. 1 14-3/16 I
Wet CFM I 159-1 84-237
I
D ~n. 5-3/8
Weight Ib
I 25
/ Fan motor F.L.A / 0.6 i-
OUTDOOR UNIT
Externalfinish
Power supply V.Hz,C
Max.fuse size (timedelay) A
I
1 / Model KH122WES KH122WESx 2
MUOSEW Munsell 5Y6.5/1 MUM18EW
115,60, 1
Compressor
/ REMOTE CONTROLLER I Wireless type 1
208/230,60,1
Winding resistance (at 68F)n
R.L.A
Refrigerantcontrol
15
Capillarytube
Dimensions
Controlvoltage (by built-in transformer)
15x2
C-R 0.98 C-S 2.21
29-15/16
9-';/I 6
21-1/4
73
W in.
D ln.
H in.
12V DC
Pipe size
10
33-1/2
11-7/16(12-5/8)
23-7/8
122Weight Ib
Connection method
Note*
I. Rating conditions (cooling)-Indoor : 8OFDB,67'FWB, Outdoor : 95FDB.75FWB
Operating kange
10x2
REFRIGERANT PIPINGLiquid in.
Gas in.
Betweenthe indoor
& outdoor units
I / Indoor intakeair temwerature I Outdoor intakeair temoerature /
Not supplied (optionalparts)
1/4
3/8
Indoors
Height difference
ft 1 Max. 25
Piping length
ft / Max. 49
Flared
Outdoors
Cooling
Flared
SO'FDB, 71"FWB
67"FDB. 57"FWB
Maximum
Minimum
115FDB
67"FDB

I Cooling capacity*' Btu/h / 12,300/12,600
/power consumption*
' w I 1,170/1,200 I 1,460/1,490 1
EER * ' (SEER)
I I
/ Fan motor F.L.A / 0.5 I
10.5/10.5(10.6/10.6)
External finish
Power supply V,Hz,4
Max.fuse size (timedelay) A
Min
. ampacity A
9.8/9.8(10.0/10.0)
115,60,1
15
0.7
MS15EN
INDOOR UNIT White
I
Dimensions 1 D in. I 7
MS12EN
White
DW CFM
Cond.drain conn. O.D. in.
279-374-427
5/8
/W in. 1 39-3/8
H in.
Airflow Lo-Me-Hi
14-3/16
-
I
/ Max.fusesize (timedelay) 15 1 20 1
Wet CFM / 265-357-406
Weiqht Ib
/ 35
OUTDOOR UNIT
External finish Munsell 5Y6.5/1
MUl2EN
Power supply V,Hz,4
1 208/230,60,1
L.R.A
Refrigerant control
/W in.
MU15EN
Dimensions
29
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
35
D in.
H in.
Wirelesstype
12V DC
Not supplied (optionalparts)
Pipe size
Notes* 1. Rating conditions (cooling)-Indoor
: 80"FDBr67"FWB,Outdoor : 95FDB.75FWB
Capillary tube
33-1/2
11-7/16(12-5/8)
23-7/8
Weight Ib
Connection method
Between the indoor
& outdoor units
Operating Range
/ Indoor intakeair temperature I Outdoor intakeair temperature 1
99
Liquid in. 1/4
Indoors
Outdoors
Height difference
ft
Piping length ft
Gas in. I 5/8
Flared
Flared
Max. 25
Max. 49
Cooling SWFDB, 71"FWB
67"FDB. 57TWB
Maximum
Minimum
115FDB
67"FDB

1. PERFORMANCE CURVE
NOTE : A point on the curve shows the reference point.
1
Outdoor intake air DB temperature rF)
DATA
MS15EN
MU15EN
Cooling capacity
SHF at rating condition = 0.67
Airflow = 406CFM
MS12EN
MU12EN
Cooling capacity
SHF at ratlngcondition = 0.7 1
Airflow = 406CFM
18
e
i!
fj 15
Et
X
; 12 71
+
.-
0
67
m a 63
5 9
-
m
C
2'
z -
c 2
E!
C
e 71
2 67
63
81
k
3
a
-
m
C
I-
67 75 85 95 95 105 115
Outdoor intake air DBtemperature ("F)
MSOSEW x2
MUM18EW
Cooling capacity
SHF st rating condition = 0.7
Airflow = 237CFM
Bypass Factor =0.07
I I I I I I I
Outdoor mtake air DB temperature rF)
Outdoor~ntakeair DB temperature ("F)

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.
P!
I
, P!
a
c
.-
I-'
3
m
85 90 95 100 1
Outdoor ambienttemperature
Outdoor ambienttemperature

Data is based on the conditionof indoor humidity 50%. Air flow should be set at HI. A point on the curve showsthe reference point.
MU12EN
(PSIG)
Outdoor ambient temperature

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.
MUISEN
Outdoor ambient temperature

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.
(PSIG)
100
I I I I
0 85 90 95 100
Outdoor ambient temperature
Outdoor ambienttemperature

Indoor unit MS12EN
I MS15EN
2. OPERATING RANGE
(1)POWER SUPPLY
Min.l03V-Max. 127V
Models Rating
Outdoor unit
Guaranteed Voltage
MUM18EW
Function
Min.198V 208V 230V Max.253V
MU 12EN
MU1 5EN
2081230V60Hz 1 d(3 wires)
Standard temperature
Maximum tern~erature
2081230V 60Hz 14
-----
Cooling
3. OUTLET AIR SPEED AND COVERAGE RANGE
Outdoor
DB("F)
i WB("F)
Indoor
80
9 5
I Maximum humidity
Model Airflow Air speed Covera e
I I (CFM) I ift/sec.) I ranae I
DB("F)
I I I I
MSOSEW
14.3 25.3
MSlSEN
Wet 406 13.6 24.1
WB("F)
67
7
1
78%
4. ADDITIONAL REFRIGERANTCHARGE (R-22(oz))
Minimumtemperature
-
*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 installed inside the room.
95
115
5767
Model
-
-
67
-
Outdoor unit
precharged
(upto 25
ft)
I I I I I I I
/ 3 lbs 7 oz
Refrigerant piping length (oneway)
MSOSEW
MUOSEW
MS12EN
MU12EN
25 ft
2 Ibs
12 oz
3 Ibs 3 oz
30ft 49 ft 33 ft 40ft 45 ft

5. MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
Additional piping
Max. length
r
49 ft
*Jt does not matter which of two units is higher.
INDOOR UNIT A INDOOR UNIT I3
OUTDOOR UNlT
-

TANDARD OPERATION DATA
I [tern / Unit 1 Cooling 1 Cooling I Cooling I
Model
MSOSEW MSl PEN
Total
MSl BEN
Input
Capacity
SHF
Power supply (V,Hz,+)
kW
Electrical
circuit
I Fan current IAl 0.6 1 0.5 I 0.5 1
Btu/h
-
/ Indoor unit
115.60.1
Input
0.83
Input
I kW / 0.03 0.05
Fan current
/ Dischargetemperature I % I 176 1 188 I 182 I
8,800
0.67
MSO9EW
115.60.1
0.05
Power supply (V,Hz,d)
kW
Condensing pressure
Suction pressure
1.17/1.20
115-60.1
A
12,300/12,600
0.71
1.46/1.49
MSl2EN
Outdoor unit
115.60.1
0.8
6.5/6.1
Comp. current
/ A / 6.6
psi.G
psi-G
Refrigerant
circuit
/ Refrigerant charge 1-1 2ibs 120z 1 31bs 30z 1
31bs 70z I
14,300/14,600
0.67
MS1SEN
0.3
5.0/4.7
Comp. shell bottomtemp.
Ref. pipe length
MUO9EW
208/230.60
- 1
1.12/1.15
252
79
Condensing temperature
Suction temperature
indoor side Discharge
air temperature
208/230.60 1
0.5
1.41/1.44
"F
ft
/ Fan speed / rpm I 1,430 1 1,530 I 1,530 I
0.5
MU12EN
ppp
269
84
"F
'F
Intake air
temperature
MU1SEN
285
77
159
25
"F
'F
DB
WB
/ Airflow I CFM / 920 I 1,270 I 1,270 1
111
49
Outdoor side
POWER SUPPLY
MSOSEW
172
25
80
67
INDOOR UNlT
60Hz, '4
n n II
114
59
173
25
SIGNAL WIRE
2 wire 12V DC
120
44
80
67
Airflow (Hi)
Field installed
1 15V 60Hz, 14
80
67
CFM
"F
"F
rpm
Intake air
temperature
MS12EN
MS15EN
INDOOR UNlT 115V. 60Hz. 14
DB
WB
SIGNAL WlRE
237
95
-
740
Fan speed
It'
2 wire 12V DC
OUTDOOR UNlT
406
95
-
910
OUTDOOR UNlT
406
95
-
910

Model
Item
I unit
Total
MSMI 8EW
Input
Single
Capacity
Input
Double
kW
Electrical
circuit
I Condensing pressure I P+G I 245 I 270 I
Cooling
SHF
- 0.7 0.7 !
Btu/h
Indoor unit model
Power supply (V.Hz.4)
Fan current
/ A / 0.3~2
kW
Comp. current
MSO9EW
115-60.1
0.85
0.03~2
I
Outdoor unit model
Power supply (V.Hz.4)
Input
I kW
8,400
1.70
Fan current IAl 1 .O
A
Suction pressure
Dischargetemperature
/ Comp. shell bottom temp. I 'F 1 166 I
8,400~2
MUM 18EW
208/230 60
. 1 (3-wire)
Refrigerant
circuit
0.82
6.5
psi-G
'F
Indoor side
1.64
7.2~2
Condensing temperature
Ref. pipe length
Refrigerant charge
76
188
I Airflow (Hi) / CFM I 237 I
79
184
'F
ft
-
Intakeair
temperature
Discharge
air temperature
Outdoor side
Suctiontemperature
1 'F I 63
25
21bs 202 X 2
109
50
Fan soeed I rpm I 1,430
DB
WB
DB
WB
119
Intakeair
temperature
POWER SUPPLY
'F
"F
"F
"F
Fan speed
INDOOR UNlT
DB
WB
INDOOR UNlT
n
80
67
Aifflow / CFM / 1,150
rpm
-------
Fieldinstalled
208/230V, 60Hz,
56
55
'F
'F
900
i
OUTDOOR UNIT
56
55
95
-

MSOSEW
INDOOR UNlT
4 holes 7/16 x 13/16
Wall holeb2-1/2
1
Air in
OUTLINES AND DIMENSIONS
111
2-3/16 3/4
Wirelessremotecontroller
OUTDOOR UNlT
Air out
Air out DrainhoseO.D.5/8
Insulation0.0.1
- 1/8
REQUIRED SPACE
Unit : inch
Wiring hole
43-7/8
Refrigerant
pipe (Flared) 0. D.3/8
Note
: The symbol 4 indicates diameter

Installationplate
LiquidlineO.D.5/46-19-11/16
Flarejoint 1/4F
Gas line O.D.3/8-16-15/16
InsulationFlarejoint 5/8F
0.D.2-3/16
O.D.l-1/8
-- --3
MODEL MS12EN
Unit : inch
MS15EN
INDOOR UNlT
3-1/2 32-1/4 3-1/2
INDOOR UNIT REQUIRED SPACE
-
-
4 Inor more 4-3/8 In or more
OUTDOOR UNlT
b
i&------ q5-i :
i i i
- -
I
- 7
- - - - - - - - -.
-
-
I
-
i P.
-
L
i

0DEL:MUM-18EW
OUTDOOR UNIT
REQUIRED SPACE
Unit : inch
Air in
4 Installationanchor holes
Air
out
Wiring hole
6 3-7/8 1
Refr~gerant
ppe(Flared)
#I 14
Refr~gerant Unit center '
ppe(Flare4
@3/8
NOTE : The symbol # indicates diameter.