Mitsubishi Electric MS-30SV-A1 User manual

SERVICE MANUAL
SPLIT-TYPE, AIR CONDITIONER
CONTENTS
1. PART NAMES AND FUNCTIONS······················2
2. SPECIFICATION·················································4
3. NOISE CRITERIA CURVES·······························5
4. OUTLINES AND DIMENSIONS ·························6
5. WIRING DIAGRAM ············································8
6. REFRIGERANT SYSTEM DIAGRAM··············10
7. PERFORMANCE CURVES······························11
8. MICROPROCESSOR CONTROL ····················15
9. SERVICE FUNCTIONS ····································24
10. TROUBLESHOOTING······································26
11. DISASSEMBLY INSTRUCTIONS·····················40
12. PARTS LIST······················································44
13. OPTIONAL PARTS ······················BACK COVER
Wireless type
Model
MS-30SV - (WH)· MU-30SV -A1A1
No. OB255
MS-30SV - A1
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2
Grille
Operation Indicator
PART NAMES AND FUNCTIONS
1
INDOOR UNIT
MS-30SV - A1
OUTDOOR UNIT
MU-30SV - A1
(When the grille is opened)
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3
REMOTE CONTROLLER
MS-30SV - A1
ON/OFF
TOO
COOL
PM
AM
TOO
WARM
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
WIDE VANE
LONG
I FEEL COOL
DRY
PM
CLOCK
AM
RESET CLOCK
FAN
Open the front lid.
Signal transmitting section
Operation display section
OPERATE/ STOP
(ON/ OFF)button
TEMPERATURE buttons
OPERATION SELECT button
FAN SPEED CONTROL button
OFF-TIMER button
HR. button
MIN. button
(TIME SET button)
ON-TIMER button
RESET button
ECONO COOL button
VANE button
(Horizontal vane button)
CLOCK SET button
LONG button
WIDE VANE button
(Vertical vane button)
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4
SPECIFICATION
2
NOTE:Test conditions are based on AS/NZS 3823.1.1. 1998.
Cooling : Indoor Dry-bulb temperature 27°C / Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C / Wet-bulb temperature 24°C
Indoor model
Function
Power supply
Capacity
Air flow(Hi)
Dehumidification
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Thermistor RT11(at25:)
Thermistor RT12(at25:)
Thermistor RT13(at25:)
Outdoor model
Air flow
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level(Hi)
Fan speed(Hi)
Fan speed regulator
Refrigerant filling
capacity(R-22)
Refrigerating oil (Model)
Thermistor RT62(at25:)
Thermistor RT63(at0:)
kW
K/h
L/h
A
A
W
A(kW)
%
A
A
"
mm
kg
dB
rpm
k"
k"
k"
K/h
A
A
W
"
"
mm
kg
dB
rpm
kg
L
k"
k"
MS-30SV - A1
Single phase
240V, 50Hz
25
—
93
0.35
RC4V40-AA
WHT-BLK 138.2
BLK-RED 159.0
1100O325O227
16
5
45
1,220
3
10
10
10
MU-30SV - A1
0.58
NH-56VNHT
2,700
C-R 0.66
C-S 1.58
RA6V75-AA
WHT-BLK 62.8 BLK-YLW 55.9
YLW-RED 26.0
870o850o295
78
55
820
2
2.40
1.2 (MS32N1)
231.44
33.18
Cooling
8.4
972
4.5
15.9
3,560
55 (with soft starter)
2.36
3000
14.97
Electrical data
Fan motor
Special remarks
Compressor
Electrical data
Fan motor
Special remarks
Capacity
Coefficient of performance(C.O.P)
Capacity
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5
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
45
SPL(dB(A)) LINE
Hi
NOTCH
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
55
SPL(dB(A)) LINE
Hi
NOTCH
3NOISE CRITERIA CURVES
MS-30SV- A1 MU-30SV- A1
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6
OUTLINES AND DIMENSIONS
4
162
19
58
47
7.5315
255.547
2.5
98 173
98 173414.5 414.5
5225
253
791
56
1068
1100
325
Air out
Air in
Insulation [28
Drain hose [16
(Connected part O.D)
{
Liquid line [9.52-0.5m
Gas line [16-0.43m
Insulation [50 O.D
[32 I.D
Installation plate
Wall hole [75
Wireless remote controller
Installation plate Indoor unit
MS-30SV- A1
INDOOR UNIT
Unit: mm
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7
100 10
1000For 10 units or less
200
Outdoor Unit-Necessary surrounding clearance
(Concentrated installation) The upper side must be open.
Outdoor Unit-Necessary surrounding clearance
200
10
10
10Note:Allow adequate
upper clearance
150
500
500 Service space
Front opening
R20
R20
25 max.
Standard bolt length
65
Front right piping holes-
detail figures
80
17
12
R6
23 33
Side air intake
724295
Outlet guide
installation hole
302
Air intake
Air intake
Air outlet
870
185 185
500
330 362 1715 39.5 27.5
Terminal block for indoor and outdoor unit connection
Terminal block for power line
Handle for moving
179 524
441
445
450
468
553850
40 60524
Service panel
Refrigerant-pipe flared
connection [15.88
Refrigerant-pipe flared
connection [9.52
Knock out hole
for front piping
(refrigerant,drainage
and wiring)
42 45
104 33
Bottom
piping hole
2-U-shaped
notched
holes
Drain hole
Drain hole
2-12o23 Oval holes
(standard bolt M10)
Handle for moving
A
Handle
for moving
138
95 Rear piping hole
Rear fresh
air intake
A
Knock out hole
for right piping
(refrigerant,drainage
and wiring)
60
120
4553
Knock out holes for
power line 2-[27
MU-30SV- A1
OUTDOOR UNIT Unit: mm
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8
WIRING DIAGRAM
5
INDOOR UNIT
TB
TAB12
33
REMOTE
CONTROLLER
RECEIVER
P.C.BOARD
DISPLAY
P.C.BOARD
102
CN 101 CN
RED
BLU
MV2
GRN/YLW
TO OUTDOOR
UNIT
CONNECTING
12V CN201
3
2
1
BRN
2
N
3
240V~ F11
ELECTRONIC CONTROL P.C. BOARD
NR11
CN211
CN
111 RT11
RT12
15
MV2
CN
151
CN112
1
2
3
4RT13
MV1
TRANS
HIC1
C11
121
CN
1
3
4
SR141
3
MF
RED
WHT
BRN
YLW
GRY
BLK
SYMBOL
SR141
TB
SYMBOL
MV2
NR11
RT11
RT12
RT13
SYMBOL
C11
F11
HIC1
MF
MV1
NAME NAME NAME
INDOOR FAN CAPACITOR
FUSE(3.15A)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER PROTECTOR)
VANE MOTOR(HORIZONTAL)
VANE MOTOR(VERTICAL)
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR (MAIN)
INDOOR COIL THERMISTOR (SUB)
SOLID STATE RELAY
TERMINAL BLOCK
NOTE:1. About the outdoor side 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
MS-30SV- MODEL WIRING DIAGRAM
A1
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9
OUTDOOR UNIT
NOISE FILTER P.C. BOARD
DEICER P.C. BOARD
CIRCUIT BREAKER
T61
LD83
LD82
LDE
LD81
LD80
GRN
BLU
CT
LEV
ORN C2
6543
RED
ORN WHT BLK
1
2
YLW
YLW BLK
WHT
RED
321
RT63
RT62 MF
6
CN662 CN724
CN711
3
1
5
NR61
X52
CN730
TAB52
F61NO
COM
SR61
SR62
RED
BLU WHT
BRN
BLU WHT BLU
X52
MC R
C
S
BLK
BLU RED
C1
BRN WHT
52C
21
TO INDOOR UNIT CONNECTING
POWER SUPPLY
~ /N 240V
50Hz
GRN/YLW
TB1
TB2
DSAR
52C
BLU
WHT
A1
A2
12V
240V~
N
2
3
N
L
SYMBOL
TB2
T61
X52
52C
SYMBOL
MF
NR61
RT62
RT63
SR61
SR62
TB1
SYMBOL
CT
C1
C2
DSAR
F61
LEV
MC
NAME NAME NAME
CURRENT TRANS
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(3.15A)
EXPANSION VALVE COIL
COMPRESSOR (INNER PROTECTOR)
OUTDOOR FAN MOTOR (INNER PROTECTOR)
VARISTOR
DISCHARGE TEMPERATURE THERMISTOR
AMBIENT TEMPERATURE THERMISTOR
SOLID STATE RELAY
SOLID STATE RELAY
TERMINAL BLOCK
TERMINAL BLOCK
TRANS
CONTACTOR
SOFT START RELAY
NOTE 1. Use copper conductors only (For field wiring).
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers (3,N, 2).
3. Symbols below indicate.
/: Terminal block, : Connector
MU-30SV- MODEL WIRING DIAGRAM
A1
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10
REFRIGERANT SYSTEM DIAGRAM
6
Indoor
heat
exchanger
Outdoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT13(sub)
Discharge
thermistor
RT62
Flared connection
Stop valve
Stop valve
(with service port)
Capillary tube
[3.6✕[2.4✕50 Refrigerant flow in cooling
Compressor
Refrigerant pipe [15.88
(Option)
(with heat insulator)
Refrigerant pipe
(Option) [9.52
(with heat insulator)
Indoor coil
thermistor
RT12(main)
LEV
Strainer
Strainer
Accumulator
Ambient
temperature
thermistor
RT63
Strainer
Capillary tube
[4.0✕[2.4✕200 Capillary tube
[4.0✕[2.4✕100
MS-30SV - A1
INDOOR UNIT OUTDOOR UNIT
Unit:mm
MU-30SV - A1
MAX. REFRIGERANT PIPING LENGTH
Model
Refrigerant piping
Max.length :
A
MS-30SV- 30 15.88 9.52 Gas 0.43
Liquid 0.5
Length of connecting pipe : mPiping size O.D : mm Indoor unit Outdoor unitLiquidGas
A1 Gas 0
Liquid 0
MAX. HEIGHT DIFFERENCE
Refrigerant Piping
Max. length
A
wHeight difference should be within
15m regardless of which unit,
indoor or outdoor position is high.
wMax. Height
difference 15m
Indoor
unit
Outdoor unit
ADDITIONAL REFRIGERANT CHARGE (R-22:g)
Outdoor unit
precharged
045 120
Refrigerant piping length (one way)
15m10m7m
Model
MS-30SV- 2,400
A1
20m 25m 30m
195 345270
Calculation:Xg=15go(Refrigerant piping length(m)-7)
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11
PERFORMANCE CURVES7
The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.
Since operating conditions vary according to the areas where these units are installed. The following information has been pro-
vided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
Rated voltage : ±10% (216 ~ 264V),50Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature : °C [WB]
(2) Indoor outlet air wet-bulb temperature : °C [WB]
(3) Outdoor intake air dry-bulb temperature : °C [DB]
(4) Total input: W
Indoor air wet/dry-bulb temperature difference on the left side of the chart on this page shows the difference between the
indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb / dry-bulb temperature difference
1. Attach at least 2 sets of wet and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.
2. Attach at least 2 sets of wet and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once to start the EMERGENCY COOL MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT OUTDOOR UNIT
}
Cooling
18.6
16.8
15.1
13.5
12.0
10.5
MS-30SV- A1
Indoor air Wet-bulb temperature
difference (:)
Indoor intake air Wet-bulb temperature (:)
Outdoor intake air Dry-bulb temperature (:)
Indoor intake air Wet-bulb temperature (:)
Outdoor intake air Dry-bulb temperature (:)
Wet-and dry-bulb
thermometers Wet-and dry-bulb
thermometers
MS-30SV - A1
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12
MU-30SV - A1
Ambient temperature(˚C)
Ambient humidity(%)
15 20
50 25 60 30 70 35(:) (%)
0.2
0.3
0.4
0.5
0.6
Ambient temperature(˚C)
Ambient humidity(%)
15 18 20
50 25 60 30 32 70 35(:)
(%)
10
11
12
13
14
15
16
17
Outdoor low pressure
Outdoor unit current(A)
(MPa [Gauge])
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
11Both indoor and outdoor unit are under the same temperature/humidity condition.
22Air flow should be set at MAX.
Dry-bulb temperature Relative humidity(%)
20 50
25 60
30 70
MU-30SV - A1
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13
MS-30SV - : MU-30SV - A1A1
OUTDOOR DB(:)
INDOORINDOOR 21 25 27 30
DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 18 9.87 4.44 0.45 2848 9.45 4.25 0.45 2990 9.07 4.08 0.45 3133 8.74 3.93 0.45 3275
21 20 10.29 3.40 0.33 2990 9.87 3.26 0.33 3168 9.58 3.16 0.33 3240 9.24 3.05 0.33 3382
22 18 9.87 4.84 0.49 2848 9.45 4.63 0.49 2990 9.07 4.45 0.49 3133 8.74 4.28 0.49 3275
22 20 10.29 3.81 0.37 2990 9.87 3.65 0.37 3168 9.58 3.54 0.37 3240 9.24 3.42 0.37 3382
22 22 10.71 2.68 0.25 3097 10.33 2.58 0.25 3293 10.08 2.52 0.25 3382 9.66 2.42 0.25 3524
23 18 9.87 5.23 0.53 2848 9.45 5.01 0.53 2990 9.07 4.81 0.53 3133 8.74 4.63 0.53 3275
23 20 10.29 4.22 0.41 2990 9.87 4.05 0.41 3168 9.58 3.93 0.41 3240 9.24 3.79 0.41 3382
23 22 10.71 3.11 0.29 3097 10.33 3.00 0.29 3293 10.08 2.92 0.29 3382 9.66 2.80 0.29 3524
24 18 9.87 5.63 0.57 2848 9.45 5.39 0.57 2990 9.07 5.17 0.57 3133 8.74 4.98 0.57 3275
24 20 10.29 4.63 0.45 2990 9.87 4.44 0.45 3168 9.58 4.31 0.45 3240 9.24 4.16 0.45 3382
24 22 10.71 3.53 0.33 3097 10.33 3.41 0.33 3293 10.08 3.33 0.33 3382 9.66 3.19 0.33 3524
24 24 11.26 2.36 0.21 3240 10.84 2.28 0.21 3418 10.58 2.22 0.21 3524 10.25 2.15 0.21 3702
25 18 9.87 6.02 0.61 2848 9.45 5.76 0.61 2990 9.07 5.53 0.61 3133 8.74 5.33 0.61 3275
25 20 10.29 5.04 0.49 2990 9.87 4.84 0.49 3168 9.58 4.69 0.49 3240 9.24 4.53 0.49 3382
25 22 10.71 3.96 0.37 3097 10.33 3.82 0.37 3293 10.08 3.73 0.37 3382 9.66 3.57 0.37 3524
25 24 11.26 2.81 0.25 3240 10.84 2.71 0.25 3418 10.58 2.65 0.25 3524 10.25 2.56 0.25 3702
26 18 9.87 6.42 0.65 2848 9.45 6.14 0.65 2990 9.07 5.90 0.65 3133 8.74 5.68 0.65 3275
26 20 10.29 5.45 0.53 2990 9.87 5.23 0.53 3168 9.58 5.08 0.53 3240 9.24 4.90 0.53 3382
26 22 10.71 4.39 0.41 3097 10.33 4.24 0.41 3293 10.08 4.13 0.41 3382 9.66 3.96 0.41 3524
26 24 11.26 3.26 0.29 3240 10.84 3.14 0.29 3418 10.58 3.07 0.29 3524 10.25 2.97 0.29 3702
26 26 11.59 1.97 0.17 3418 11.26 1.91 0.17 3596 11.09 1.88 0.17 3702 10.75 1.83 0.17 3809
27 18 9.87 6.81 0.69 2848 9.45 6.52 0.69 2990 9.07 6.26 0.69 3133 8.74 6.03 0.69 3275
27 20 10.29 5.87 0.57 2990 9.87 5.63 0.57 3168 9.58 5.46 0.57 3240 9.24 5.27 0.57 3382
27 22 10.71 4.82 0.45 3097 10.33 4.65 0.45 3293 10.08 4.54 0.45 3382 9.66 4.35 0.45 3524
27 24 11.26 3.71 0.33 3240 10.84 3.58 0.33 3418 10.58 3.49 0.33 3524 10.25 3.38 0.33 3702
27 26 11.59 2.43 0.21 3418 11.26 2.36 0.21 3596 11.09 2.33 0.21 3702 10.75 2.26 0.21 3809
28 18 9.87 7.21 0.73 2848 9.45 6.90 0.73 2990 9.07 6.62 0.73 3133 8.74 6.38 0.73 3275
28 20 10.29 6.28 0.61 2990 9.87 6.02 0.61 3168 9.58 5.84 0.61 3240 9.24 5.64 0.61 3382
28 22 10.71 5.25 0.49 3097 10.33 5.06 0.49 3293 10.08 4.94 0.49 3382 9.66 4.73 0.49 3524
28 24 11.26 4.16 0.37 3240 10.84 4.01 0.37 3418 10.58 3.92 0.37 3524 10.25 3.79 0.37 3702
28 26 11.59 2.90 0.25 3418 11.26 2.81 0.25 3596 11.09 2.77 0.25 3702 10.75 2.69 0.25 3809
29 18 9.87 7.60 0.77 2848 9.45 7.28 0.77 2990 9.07 6.99 0.77 3133 8.74 6.73 0.77 3275
29 20 10.29 6.69 0.65 2990 9.87 6.42 0.65 3168 9.58 6.22 0.65 3240 9.24 6.01 0.65 3382
29 22 10.71 5.68 0.53 3097 10.33 5.48 0.53 3293 10.08 5.34 0.53 3382 9.66 5.12 0.53 3524
29 24 11.26 4.61 0.41 3240 10.84 4.44 0.41 3418 10.58 4.34 0.41 3524 10.25 4.20 0.41 3702
29 26 11.59 3.36 0.29 3418 11.26 3.26 0.29 3596 11.09 3.22 0.29 3702 10.75 3.12 0.29 3809
30 18 9.87 7.99 0.81 2848 9.45 7.65 0.81 2990 9.07 7.35 0.81 3133 8.74 7.08 0.81 3275
30 20 10.29 7.10 0.69 2990 9.87 6.81 0.69 3168 9.58 6.61 0.69 3240 9.24 6.38 0.69 3382
30 22 10.71 6.10 0.57 3097 10.33 5.89 0.57 3293 10.08 5.75 0.57 3382 9.66 5.51 0.57 3524
30 24 11.26 5.07 0.45 3240 10.84 4.88 0.45 3418 10.58 4.76 0.45 3524 10.25 4.61 0.45 3702
30 26 11.59 3.83 0.33 3418 11.26 3.71 0.33 3596 11.09 3.66 0.33 3702 10.75 3.55 0.33 3809
31 18 9.87 8.39 0.85 2848 9.45 8.03 0.85 2990 9.07 7.71 0.85 3133 8.74 7.43 0.85 3275
31 20 10.29 7.51 0.73 2990 9.87 7.21 0.73 3168 9.58 6.99 0.73 3240 9.24 6.75 0.73 3382
31 22 10.71 6.53 0.61 3097 10.33 6.30 0.61 3293 10.08 6.15 0.61 3382 9.66 5.89 0.61 3524
31 24 11.26 5.52 0.49 3240 10.84 5.31 0.49 3418 10.58 5.19 0.49 3524 10.25 5.02 0.49 3702
31 26 11.59 4.29 0.37 3418 11.26 4.16 0.37 3596 11.09 4.10 0.37 3702 10.75 3.98 0.37 3809
32 18 9.87 8.78 0.89 2848 9.45 8.41 0.89 2990 9.07 8.07 0.89 3133 8.74 7.78 0.89 3275
32 20 10.29 7.92 0.77 2990 9.87 7.60 0.77 3168 9.58 7.37 0.77 3240 9.24 7.11 0.77 3382
32 22 10.71 6.96 0.65 3097 10.33 6.72 0.65 3293 10.08 6.55 0.65 3382 9.66 6.28 0.65 3524
32 24 11.26 5.97 0.53 3240 10.84 5.74 0.53 3418 10.58 5.61 0.53 3524 10.25 5.43 0.53 3702
32 26 11.59 4.75 0.41 3418 11.26 4.61 0.41 3596 11.09 4.55 0.41 3702 10.75 4.41 0.41 3809
CAPACITY : 8.4(KW) SHF : 0.63 INPUT : 3560(W)
PERFORMANCE DATA COOL operation
NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
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14
OUTDOOR DB(:)
INDOORINDOOR 35 40 43 46
DB(:) WB(:)Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 18 8.23 3.70 0.45 3489 7.56 3.40 0.45 3702 7.27 3.27 0.45 3774 6.97 3.14 0.45 3845
21 20 8.65 2.86 0.33 3631 8.06 2.66 0.33 3809 7.77 2.56 0.33 3916 7.48 2.47 0.33 4023
22 18 8.23 4.03 0.49 3489 7.56 3.70 0.49 3702 7.27 3.56 0.49 3774 6.97 3.42 0.49 3845
22 20 8.65 3.20 0.37 3631 8.06 2.98 0.37 3809 7.77 2.87 0.37 3916 7.48 2.77 0.37 4023
22 22 9.16 2.29 0.25 3774 8.57 2.14 0.25 3987 8.27 2.07 0.25 4058 7.98 2.00 0.25 4130
23 18 8.23 4.36 0.53 3489 7.56 4.01 0.53 3702 7.27 3.85 0.53 3774 6.97 3.70 0.53 3845
23 20 8.65 3.55 0.41 3631 8.06 3.31 0.41 3809 7.77 3.19 0.41 3916 7.48 3.07 0.41 4023
23 22 9.16 2.66 0.29 3774 8.57 2.48 0.29 3987 8.27 2.40 0.29 4058 7.98 2.31 0.29 4130
24 18 8.23 4.69 0.57 3489 7.56 4.31 0.57 3702 7.27 4.14 0.57 3774 6.97 3.97 0.57 3845
24 20 8.65 3.89 0.45 3631 8.06 3.63 0.45 3809 7.77 3.50 0.45 3916 7.48 3.36 0.45 4023
24 22 9.16 3.02 0.33 3774 8.57 2.83 0.33 3987 8.27 2.73 0.33 4058 7.98 2.63 0.33 4130
24 24 9.66 2.03 0.21 3916 9.07 1.91 0.21 4094 8.82 1.85 0.21 4183 8.57 1.80 0.21 4272
25 18 8.23 5.02 0.61 3489 7.56 4.61 0.61 3702 7.27 4.43 0.61 3774 6.97 4.25 0.61 3845
25 20 8.65 4.24 0.49 3631 8.06 3.95 0.49 3809 7.77 3.81 0.49 3916 7.48 3.66 0.49 4023
25 22 9.16 3.39 0.37 3774 8.57 3.17 0.37 3987 8.27 3.06 0.37 4058 7.98 2.95 0.37 4130
25 24 9.66 2.42 0.25 3916 9.07 2.27 0.25 4094 8.82 2.21 0.25 4183 8.57 2.14 0.25 4272
26 18 8.23 5.35 0.65 3489 7.56 4.91 0.65 3702 7.27 4.72 0.65 3774 6.97 4.53 0.65 3845
26 20 8.65 4.59 0.53 3631 8.06 4.27 0.53 3809 7.77 4.12 0.53 3916 7.48 3.96 0.53 4023
26 22 9.16 3.75 0.41 3774 8.57 3.51 0.41 3987 8.27 3.39 0.41 4058 7.98 3.27 0.41 4130
26 24 9.66 2.80 0.29 3916 9.07 2.63 0.29 4094 8.82 2.56 0.29 4183 8.57 2.48 0.29 4272
26 26 10.16 1.73 0.17 4058 9.58 1.63 0.17 4236 9.28 1.58 0.17 4325 8.99 1.53 0.17 4414
27 18 8.23 5.68 0.69 3489 7.56 5.22 0.69 3702 7.27 5.01 0.69 3774 6.97 4.81 0.69 3845
27 20 8.65 4.93 0.57 3631 8.06 4.60 0.57 3809 7.77 4.43 0.57 3916 7.48 4.26 0.57 4023
27 22 9.16 4.12 0.45 3774 8.57 3.86 0.45 3987 8.27 3.72 0.45 4058 7.98 3.59 0.45 4130
27 24 9.66 3.19 0.33 3916 9.07 2.99 0.33 4094 8.82 2.91 0.33 4183 8.57 2.83 0.33 4272
27 26 10.16 2.13 0.21 4058 9.58 2.01 0.21 4236 9.28 1.95 0.21 4325 8.99 1.89 0.21 4414
28 18 8.23 6.01 0.73 3489 7.56 5.52 0.73 3702 7.27 5.30 0.73 3774 6.97 5.09 0.73 3845
28 20 8.65 5.28 0.61 3631 8.06 4.92 0.61 3809 7.77 4.74 0.61 3916 7.48 4.56 0.61 4023
28 22 9.16 4.49 0.49 3774 8.57 4.20 0.49 3987 8.27 4.05 0.49 4058 7.98 3.91 0.49 4130
28 24 9.66 3.57 0.37 3916 9.07 3.36 0.37 4094 8.82 3.26 0.37 4183 8.57 3.17 0.37 4272
28 26 10.16 2.54 0.25 4058 9.58 2.39 0.25 4236 9.28 2.32 0.25 4325 8.99 2.25 0.25 4414
29 18 8.23 6.34 0.77 3489 7.56 5.82 0.77 3702 7.27 5.59 0.77 3774 6.97 5.37 0.77 3845
29 20 8.65 5.62 0.65 3631 8.06 5.24 0.65 3809 7.77 5.05 0.65 3916 7.48 4.86 0.65 4023
29 22 9.16 4.85 0.53 3774 8.57 4.54 0.53 3987 8.27 4.39 0.53 4058 7.98 4.23 0.53 4130
29 24 9.66 3.96 0.41 3916 9.07 3.72 0.41 4094 8.82 3.62 0.41 4183 8.57 3.51 0.41 4272
29 26 10.16 2.95 0.29 4058 9.58 2.78 0.29 4236 9.28 2.69 0.29 4325 8.99 2.61 0.29 4414
30 18 8.23 6.67 0.81 3489 7.56 6.12 0.81 3702 7.27 5.89 0.81 3774 6.97 5.65 0.81 3845
30 20 8.65 5.97 0.69 3631 8.06 5.56 0.69 3809 7.77 5.36 0.69 3916 7.48 5.16 0.69 4023
30 22 9.16 5.22 0.57 3774 8.57 4.88 0.57 3987 8.27 4.72 0.57 4058 7.98 4.55 0.57 4130
30 24 9.66 4.35 0.45 3916 9.07 4.08 0.45 4094 8.82 3.97 0.45 4183 8.57 3.86 0.45 4272
30 26 10.16 3.35 0.33 4058 9.58 3.16 0.33 4236 9.28 3.06 0.33 4325 8.99 2.97 0.33 4414
31 18 8.23 7.00 0.85 3489 7.56 6.43 0.85 3702 7.27 6.18 0.85 3774 6.97 5.93 0.85 3845
31 20 8.65 6.32 0.73 3631 8.06 5.89 0.73 3809 7.77 5.67 0.73 3916 7.48 5.46 0.73 4023
31 22 9.16 5.59 0.61 3774 8.57 5.23 0.61 3987 8.27 5.05 0.61 4058 7.98 4.87 0.61 4130
31 24 9.66 4.73 0.49 3916 9.07 4.45 0.49 4094 8.82 4.32 0.49 4183 8.57 4.20 0.49 4272
31 26 10.16 3.76 0.37 4058 9.58 3.54 0.37 4236 9.28 3.43 0.37 4325 8.99 3.33 0.37 4414
32 18 8.23 7.33 0.89 3489 7.56 6.73 0.89 3702 7.27 6.47 0.89 3774 6.97 6.21 0.89 3845
32 20 8.65 6.66 0.77 3631 8.06 6.21 0.77 3809 7.77 5.98 0.77 3916 7.48 5.76 0.77 4023
32 22 9.16 5.95 0.65 3774 8.57 5.57 0.65 3987 8.27 5.38 0.65 4058 7.98 5.19 0.65 4130
32 24 9.66 5.12 0.53 3916 9.07 4.81 0.53 4094 8.82 4.67 0.53 4183 8.57 4.54 0.53 4272
32 26 10.16 4.17 0.41 4058 9.58 3.93 0.41 4236 9.28 3.81 0.41 4325 8.99 3.69 0.41 4414
CAPACITY : 8.4(KW) SHF : 0.63 INPUT : 3560(W)
MS-30SV - : MU-30SV - A1A1
PERFORMANCE DATA COOL operation
NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
OB255--1qxp 7/20/00 10:09 AM Page 14

15
lighting
not lighting
Approx. 2 :
or more
Difference
between target
temperature
and room
temperature
Approx. 2 :
or less
This shows that the
air conditioner is
operating to reach
the target temperature.
Please wait until the
target temperature is
obtained.
This shows that the
room temperature is
approaching the
target temperature.
Operation stateIndication
Operation Indicator
Operation time chart
Example
Previous operation
COOL mode of
“I FEEL CONTROL” or
COOL mode
● Once the mode is fixed, the mode does not change by
room temperature afterwards.
● Under the ON-TIMER ( ) operation, mode is deter-
mined according to the room temperature at the set time
the operation starts.
● When the system is stopped on the remote controller and
restarted within 2 hours in “I FEEL CONTROL” ( )
mode, the system operates in previous mode automati-
cally regardless of the room temperature.
Operation time chart
Example
Previous operation
COOL mode of
“I FEEL CONTROL”
or COOL mode
When the system is restarted after 2 hours and more, the
operation mode is determined by the room temperature
at start-up of the operation.
Restart
COOL mode of
“I FEEL CONTROL”
Restart
COOL or DRY mode
of “I FEEL CON-
TROL” that deter-
mined by room tem-
perature at start-up
of the operation.
INDOOR UNIT DISPLAY SECTION
Operation Indicator lamp
The operation indicator at the right side of the indoor unit indi-
cates the operation state.
8MICROPROCESSOR CONTROL
Once the operation mode are set, the same operation mode can
be repeated by simply turning the OPERATE/STOP(ON/OFF)
button ON.
Indoor unit receives the signal with a beep tone.
When the system turns off, 3-minute time delay will operate to
protect system from overload and compressor will not restart for
3 minutes.
8-1. “I FEEL CONTROL” OPERATION
(1) Press OPERATE/STOP(ON/OFF) button on the remote
controller. OPERATION INDICATOR lamp of the indoor
unit turns on with a beep tone.
(2) Select “I FEEL CONTROL” mode with the OPERATION
SELECT button.
(3) The operation mode is determined by the room tempera-
ture at start-up of the operation.
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
WIDE VANE
LONG
I FEEL COOL
DRY
PM
CLOCK
AM
RESET CLOCK
OPERATION SELECT button
FAN SPEED CONTROL button
OFF-TIMER button
HR. button
MIN. button
(TIME SET button)
ON-TIMER button
RESET button
ECONO COOL button
VANE button
(Horizontal vane button)
CLOCK SET button
LONG button
WIDE VANE button
(Vertical vane button)
ON/OFF
TOO
COOL
PM
AM
TOO
WARM
FAN
Signal transmitting section
Operation display section
OPERATE/ STOP
(ON/ OFF)button
TEMPERATURE buttons
Mode
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
Initial room temperature
25:or more
more than 13:,
less than 25:
MS-30SV - A1
WIRELESS REMOTE CONTROLLER
OB255--1qxp 7/20/00 11:00 AM Page 15

16
Model
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
Initial room temperature Initial set temperature
26:or more
25:to 26:
more than 13:, less than 25:
24:
Initial room temperature minus 2:
Initial room temperature minus 2:
w1
(5) TEMPERATURE buttons
In “I FEEL CONTROL” (h) mode, set temperature is decided by the microprocessor based on the room temperature.
In addition, set temperature can be 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 emit 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.
… To raise the set temperature 1~2 °C
… To lower the set temperature 1~2 °C
(4) The initial set temperature is decided by the initial room temperature.
2. Coil frost prevention
11Temperature control
When the indoor coil thermistor RT12 or RT13 reads -1°C or below, the coil frost prevention mode starts immediately.
However the coil frost prevention doesn’t work for 5 minutes since the compressor has started.
The indoor fan operates at the set speed and the compressor stops for 5 minutes.
After that, if RT12 or RT13 still reads below -1°C this mode prolonged until the RT12 and RT13 reads over -1°C.
TOO
COOL
TOO
WARM
— COOL mode of “I FEEL CONTROL” —
1. Indoor fan speed control
Indoor fan operates continuously at the set speed by FAN SPEED CONTROL button
regardless of the thermostat’s OFF-ON.
In AUTO the fan speed is as follows. Initial temperature difference Fan Speed
Room temperature minus set temperature : 1.7 °C or more ·······································Hi
Room temperature minus set temperature : Between 1 and 1.7 °C
······························· Me
Room temperature minus set temperature : less than 1 °C ·······································Lo 1 °C 1.7 °C 3 °C
Difference between room tem-
perature and set temperature
during operation
22Time control
When the three conditions as follows 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 26°C.
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 26°C.
However, when two of the above conditions (b. and c.) are satisfied again. Time accumulation is resumed.
w1 When the system is restarted with the remote controller, the system operates with the previous set temperature regard-
less of the room temperature at restart.
The set temperature is calculated by the previous set temperature.
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17
—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 room temperature.
By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease.
1. Indoor fan speed control
Indoor fan operates at the set speed by FAN SPEED CONTROL button.
However, in AUTO fan operation, fan speed becomes Lo.
2. The operation of the compressor and indoor / outdoor fan
Compressor operates by room temperature control and time control.
Set temperature is controlled to fall 2°C from initial room temperature.
Indoor fan and outdoor fan operate in the same cycle as the compressor.
• When the room temperature is 23°C or over:
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.
• When the room temperature is under 23°C:
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.
Operation time chart
Example
Thermostat
Indoor fan
Outdoor fan
Compressor
ON
8 min 1 min
4 min
3 min
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
4. Discharge temperature protection
The compressor is controlled by the temperature of discharge temperature thermistor RT62 for excess rise protection of
compressor discharge pressure.
• Compressor
When the temperature of discharge temperature thermistor RT62 goes to 120:or more, the compressor is turned OFF.
3 minutes after the compressor is turned OFF and if the temperature of discharge temperature thermistor RT62 becomes
100:or less, the compressor is turned ON.
Compressor
Outdoor fan OFF
ON
(continuously at set speed)
Indoor fan ON
ON
OFF
3. Outdoor fan control
Outdoor fan speed is controlled according to the temperature of ambient temperature thermistor RT63.
Outdoor fan Lo operation : When the outside temperature decreases to 23°C or less.
Until when the outside temperature goes to 27°C or more.
Outdoor fan Hi operation : Until when the outside temperature decreases to 23°C or less.
When the outside temperature goes to 27°C or more.
NOTE : When indoor fan Lo operation and the outside temperature is 29:or less, the outdoor fan operates in Lo.
Outdoor fan Lo operation is cancelled according to the following conditions(1or 2):
1When the operation is not changed, and the outside temperature goes to 31:or more.
2When the operation is changed. (Change to other mode / Change of the indoor FAN speed)
Operation chart
Example
OB255--1qxp 7/20/00 10:09 AM Page 17

(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 INDI-
CATOR lamp flashes on and off to show the fan motor abnormality. (See page 28.)
18
3. Coil frost prevention
The operation is as same as coil frost prevention during COOL mode of “I FEEL CONTROL”.
Indoor fan operates at the set speed and the compressor stops for 5 minutes, because protection (Coil frost prevention) has
the priority.
4. Outdoor fan control
Outdoor fan control is as same as during COOL mode of “I FEEL CONTROL”.
8-2. COOL ( ) OPERATION
(1) Press OPERATE/STOP (ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.
(2) Select COOL mode with the OPERATION
SELECT button.
(3) Press the TEMPERATURE buttons.
(TOO WARM or TOO COOL button) to select
the decided temperature.
The setting range is 16 ~ 31°C
wIndoor fan continues to operate regardless
of thermostat’s OFF-ON at set speed.
wCoil frost prevention is as same as COOL
mode of “I FEEL CONTROL”.
8-3. DRY ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor
unit turns on with a beep tone.
(2) Select DRY mode with the OPERATION
SELECT button.
(3) The microprocessor reads the room temper-
ature and determines the set temperature.
Set temperature is as shown on the right
chart.
Thermostat (SET TEMP.) does not work.
The other operations are same as DRY
mode of “I FEEL CONTROL”.
(4) DRY operation will not function when the
room temperature is 13°C or below.
8-4. FAN ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor
unit turns on with a beep tone.
(2) Select FAN mode with the OPERATION SELECT button.
(3) Select the desired fan speed. When AUTO, it becomes Lo.
Only indoor fan operates.
Outdoor unit does not operate.
8-5. FAN MOTOR CONTROL
(1) Rotational frequency feedback control
The indoor fan motor is equipped with a rotational frequency sen-
sor, and outputs signal to the microprocessor to feedback
the rotational frequency. Comparing the current rotational frequen-
cy with the target rotational frequency
(Hi, Me, Lo), the microprocessor controls SR141 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.
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19
8-6. AUTO VANE OPERATION
1. Horizontal vane
(1) Vane motor drive
This model is equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of the
motor are controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor.
(2) The horizontal vane angle and mode changes as follows by pressing the VANE button.
(3) Positioning
The horizontal vane is once pressed to the vane stopper below to confirm the standard position and then set to the
desired angle.
Confirming of standard position is performed in case of follows.
(a) When the OPERATE/STOP(ON/OFF) button is pressed (POWER ON/OFF).
(b) When the vane control is changed from AUTO to MANUAL.
(c) When the SWING is finished.
(d) When the test run starts.
(e) When the power supply turns ON.
(4) VANE AUTO ( ) mode
In VANE AUTO mode, the microprocessor automatically determines the horizontal vane angle and operation to make the
optimum room-temperature distribution.
11In COOL and DRY operation
22In FAN operation
Vane angle is fixed to Angle 1.
Vane angle is fixed to Angle 4.
(6) Dew prevention
During COOL or DRY operation at vane Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour,
the vane angle automatically changes to Angle 1 for dew prevention.
(7) SWING MODE ( )
By selecting SWING mode with the VANE button, the horizontal vane swings vertically. The remote controller displays
“”.
(5) STOP (operation OFF) and ON-TIMER standby.
When the following cases occur, the horizontal vane returns to the closed position.
(a) When the OPERATE/STOP(ON/OFF) button is pressed (POWER OFF).
(b) When the operation is stopped by the emergency operation.
(c) When the ON-TIMER is on standby.
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20
61 23 45SWING
2. Vertical vane
(1) Vane motor drive
This model is equipped with a stepping motor for the vertical vane. The rotating direction, speed, and angle of the
motor are controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor.
(2) The vertical vane angle and mode changes as follows by pressing the WIDE VANE button.
(8) ECONO COOL ( ) operation (ECONOmical operation)
When the ECONO COOL button is pressed in COOL mode, set temperature is automatically set 2°C higher than that in
COOL mode.
Also the horizontal vane swings in various cycle according to the temperature of indoor heat exchanger(Tp(w1)).
SWING operation makes you feel cooler than set temperature. So, even though the set temperature is higher than that in
COOL mode, the air conditioner can keep comfort. As a result, energy can be saved.
ECONO COOL operation is cancelled when the ECONO COOL button is pressed once again or VANE button is pressed
or LONG button is pressed or change to other operation mode.
NOTE : ECONO COOL operation does not work in COOL mode of “I FEEL CONTROL”.
SWING operation
In swing operation of ECONO COOL operation air flow is initially blew out upward(levelly).
According to the temperature of indoor coil thermistor Tp(w1) at starting of this operation, next downward blow time is
decided. Then when the downward blow has been finished, next upward blow time is decided.
For initial 10 minutes the swing operation is performed in table G~H for quick cooling(but G : Tp(w1) is 24:or less).
Also, after 10 minutes when the difference of set temperature and room temperature is more than 2:, the swing opera-
tion is performed in table D~H for more cooling(but D: Tp(w1) is 20:or less).
The air conditioner repeats the swing operation in various cycle as follows.
Temperature of Tp(w1)
more than 24°C
5
2
Downward blow time
(s)
22°C to 24°C
21°C to 22°C
20°C to 21°C
18°C to 20°C
17°C to 18°C
15°C to 17°C
15°C or less
5
8
11
14
17
20
23
Upward(level) blow time
(s)
20
17
14
11
8
2
23
A
H
G
F
E
D
C
B
w1 Tp : Minimum value of indoor coil thermistor (main) RT12 and indoor coil thermistor (sub) RT13
(9) LONG MODE ( )
By pressing the LONG button fan speed becomes higher than setting fan speed on the remote controller, and the hori-
zontal vane moves to the position for LONG mode. The remote controller displays “ ”. LONG mode is cancelled
when the LONG button is pressed once again or the VANE button is pressed or in COOL mode ECONO COOL button is
pressed.
• In the following example, the vertical vane is set to (front.).
COOL / DRY
Fan speed : Higher
Solid arrow : When the LONG mode is used.
Dotted arrow : When the LONG mode is not used.
FAN
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