Mitsubishi Electric MUCFH-24NV- E3 Service manual

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Page 1
This Servise Manual OB206 deals with MS-07/09/12/18/24NV-E1,
MU-07/09/12/18/24NV-E1, MS-18NV-E2, and MU-18NV-E2 in
OB175 THIRD EDITION issued in June in 1997.
Therfore, please refer to OB206, not to OB175 THIRD EDITION,
for the above models.
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
No. OB206
SERVICE MANUAL
Wireless type
Models
MS-07NV
MS-09NV
MS-12NV
MS-18NV
MS-24NV
MS-07NV
MS-09NV
MS-12NV
MS-18NV
MS-24NV
MS-18NV
-
E1
(WH)
E1
(WH)
E1
(WH)
E1
(WH)
E1
(WH)
E2
(WH)
E2
(WH)
E2
(WH)
E2
(WH)
E2
(WH)
E3
(WH)
·
·
·
·
·
·
·
·
·
·
·
MU-07NV
MU-09NV
MU-12NV
MU-18NV
MU-24NV
MU-07NV
MU-09NV
MU-12NV
MU-18NV
MU-24NV
MU-18NV
-
E1
E1
E1
E1
E1
E2
E2
E2
E2
E2
E3
CONTENTS
MS-18NV
MS-24NV
MS-18NV
MS-24NV
MS-18NV
-
E1
E1
E2
E2
E3
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································6
4. OUTLINES AND DIMENSIONS ·························9
5. WIRING DIAGRAM ··········································12
6. REFRIGERANT SYSTEM DIAGRAM ··············20
7. PERFORMANCE CURVES ······························24
8. MICROPROCESSOR CONTROL ····················27
9. SERVICE FUNCTIONS ····································34
10. TROUBLESHOOTING······································37
11. DISASSEMBLY INSTRUCTIONS·····················45
12. PARTS LIST······················································53
13. OPTIONAL PARTS···········································61
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TECHNICAL CHANGES
MS-07NV - E1 ➔MS-07NV - E2
1. Indoor electronic control P.C. board has changed.
However, it is compatible between E1 and E2 models.
2. Auto restart function is added.
MS-09NV - E1 ➔MS-09NV - E2
1. Indoor electronic control P.C. board has changed.
However, it is compatible between E1 and E2 models.
2. Auto restart function is added.
3. Refrigerant filling capacity (R-22) has changed. (900g ➔850g)
MS-12NV - E1 ➔MS-12NV - E2
1. Indoor electronic control P.C. board has changed.
However, it is compatible between E1 and E2 models.
Auto restart function is added.
MS-18NV - E2 ➔MS-18NV - E3
1. Indoor electronic control P.C. board has changed.
However, it is compatible between E2 and E3 models.
2. Auto restart function is added.
MS-24NV - E1 ➔MS-24NV - E2
1. Indoor electronic control P.C. board has changed.
However, it is compatible between E1 and E2 models.
2. Auto restart function is added.
2
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Page 3
PART NAMES AND FUNCTIONS
INDOOR UNIT
MS-07NV - E1
MS-07NV - E2
MS-09NV - E1
MS-09NV - E2
MS-12NV - E1
MS-12NV - E2
(When the front panel is open)
MS-07NV MS-07NV -
E1
E2
MS-09NV MS-09NV -
MS-18NV - E1
MS-18NV - E2
E1
E2
MS-12NV MS-12NV -
MS-24NV - E1
MS-24NV - E2
E1
MS-07NV MS-07NV -
MS-18NV
MS-24NV
MS-18NV
MS-24NV
MS-18NV
E1
E2
MS-09NV MS-09NV -
E1
E2
- E1
- E1
- E2
- E2
- E3
MS-12NV MS-12NV -
E1
E2
E2
MS-18NV - E1
MS-18NV - E2
MS-24NV - E1
MS-24NV - E2
MS-18NV - E3
MS-18NV - E3
OUTDOOR UNIT
MU-07NV- E1
MU-07NV- E2
MU-09NV - E1
MU-09NV - E2
MU-12NV
MU-24NV
MU-18NV
MU-18NV
-
E1
E1
E2
MU-18NV MU-12NV MU-24NV -
E1
E2
E2
E3
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MS-07NV - E1
MS-18NV - E1
Page 4
MS-09NV - E1
MS-24NV - E1
REMOTE CONTROLLER
4
MS-12NV - E1
MS-18NV - E2
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MS-07NV
MS-12NV
MS-07NV
MS-12NV
MS-24NV
- E1
- E1
- E2
- E2
- E2
Page 5
(Product number 7000001T~)
(Product number 7000001T~)
MS-09NV
MS-24NV
MS-09NV
MS-18NV
MS-18NV
- E1
- E1
- E2
- E2
- E3
(Product number 7000001T~)
(Product number 7000001T~)
(Product number 7000001T~)
5
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SPECIFICATION
Model
MS-07NV -
Function
Dehumidification
2.2
2.5
r/h
0.8
1.1
A
Running current
A
3.15-3.05
W
680-710
Power factor
%
Starting current
A
Compressor motor current
A
Fan motor current
A
fan motor
98-97
25
2.69-2.59
3.15-2.99
INDOOR 0.17 OUTDOOR 0.29
3.24-3.10
3.21-3.09
RH-145VGHT
650
700
Winding resistance(at20:)
"
C-R 4.17 C-S 5.75
Model
C-R 4.04 C-S 5.96
RC4V19-AA
Winding resistance(at20:)
Model
"
WHT-BLK292.4 BLK-RED324.6
RA6V23-AB
"
WHT-BLK268.4 BLK-RED390.8
Width
mm
815
Height
mm
275
Depth
mm
183
Width
mm
780
Height
mm
540
Depth
mm
255
Winding resistance(at20:)
Outdoor unit
Indoor unit
kg
8
Outdoor unit
kg
32
dB
37
5
Air direction
Sound level
Indoor unit
(Hi)
Outdoor unit
dB
44-45
Fan speed
Indoor unit
rpm
1,100
(Hi)
Outdoor unit
rpm
740-770
Fan speed
Indoor unit
regulator
Outdoor unit
4
1
Refrigerant filling capacity(R-22)
kg
RT11(at25:)
k"
10
RT12(at25:)
k"
10
Thermistor
NOTE:Test conditions
Cooling : Indoor DB27: / WB19:
Outdoor DB35: / WB24:
6
98-98
RH-135VGHT
Dimensions
Special remarks
780-810
—
W
Indoor unit
Weight
3.60-3.45
Output
Model
Outdoor
10
A(kW)
Auxiliary heater
Coefficient of performance(C.O.P)
fan motor
INDOOR 492 OUTDOOR 1620
Power outlet
Power input
Indoor
Cooling
kW
K /h
Air flow
Compressor
E1
Single phase,220-240V,50Hz
Capacity
Electrical data
MS-09NV -
E2
Cooling
Power supply
Capacity
E1
0.65
0.9
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MS-09NV -
Model
Capacity
kW
2.5
3.5
Dehumidification
r/h
1.1
1.6
K /h INDOOR 492 OUTDOOR 1620 INDOOR 558 OUTDOOR 2190-2304
10
A
Power outlet
Running current
A
3.60-3.45
Power input
W
780-810
%
98-98
96-91
Starting current
A
25
35
Compressor motor current
A
3.15-2.99
Fan motor current
A
Model
Indoor
Outdoor
fan motor
5.66-5.81
INDOOR 0.17 OUTDOOR 0.29 INDOOR 0.17 OUTDOOR 0.37
3.21-3.09
2.67-2.52
RH-145VGHT
RH-231VHAT
Output
W
700
Winding resistance(at20:)
"
C-R 4.04 C-S 5.96
"
WHT-BLK292.4 BLK-RED324.6
"
RA6V23-AB
RA6V40-EC or EE
WHT-BLK268.4 BLK-RED390.8 WHT-BLK130.4 BLK-RED134.6
Width
mm
815
Height
mm
275
Depth
mm
Winding resistance(at20:)
Model
Winding resistance(at20:)
Dimensions
Outdoor unit
183
Width
mm
780
Height
mm
540
mm
255
Depth
Indoor unit
kg
Outdoor unit
kg
850
605
290
8
32
38
5
Air direction
Indoor unit
dB
37
42
(Hi)
Outdoor unit
dB
44-45
50
Fan speed
1,230
Sound level
Special remarks
1,100
C-R 2.11 C-S 3.97
RC4V19-AA
Model
Indoor unit
Weight
1310-1390
—
Power factor
Coefficient of performance(C.O.P)
fan motor
6.20-6.35
A(kW)
Auxiliary heater
Compressor
Indoor unit
rpm
1,100
(Hi)
Outdoor unit
rpm
740-770
Fan speed
Indoor unit
regulator
Outdoor unit
780-820
4
1
0.65
Refrigerant filling capacity(R-22)
kg
RT11(at25:)
k"
10
RT12(at25:)
k"
10
Thermistor
E2
Cooling
Single phase,220-240V,50Hz
Air flow
Electrical data
E1
Cooling
Function
Power supply
Capacity
MS-12NV -
E2
0.8
NOTE:Test conditions
Cooling : Indoor DB27: / WB19:
Outdoor DB35: / WB24:
7
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Model
MS-18NV -
Function
E1
Capacity
kW
5.1
6.4
Dehumidification
R/h
2.5
3.4
K /h INDOOR 756 OUTDOOR 2190 INDOOR 816 OUTDOOR 2286
A
Power outlet
A
9.1
12.9-12.6
Power input
W
1,910-2,010
2,780-2,900
Outdoor
fan motor
95-92
Starting current
A
51-55
59
8.46
12.06-11.76
Compressor motor current
A
Fan motor current
A
INDOOR 0.25 OUTDOOR 0.39 INDOOR 0.29 OUTDOOR 0.55
2.67-2.54
2.30-2.21
NH-33VMDT
NH-47VMDT
Output
W
1,500
2,200
Winding resistance(at20:)
"
C-R1.2 C-S 2.7
C-R0.96 C-S 2.07
RA4V27-EA
RA4V27-EC
Model
Winding resistance(at20:)
"
Model
WHT-BLK183.8 BLK-RED250.5
WHT-BLK116.4 BLK-RED111 WHT-BLK81.1 BLK-RED102.2 BLK-YLW 92.2
Width
mm
1,015
Height
mm
320
Depth
mm
190
Width
mm
850
Height
mm
605
Depth
mm
290
Indoor unit
kg
14
Outdoor unit
kg
Dimensions
Outdoor unit
5
Sound level
Indoor unit
dB
42
45
(Hi)
Outdoor unit
dB
52
53
Fan speed
Indoor unit
rpm
1,180
1,260
(Hi)
Outdoor unit
rpm
810-845
860-886
Fan speed
Indoor unit
regulator
Thermistor
4
2
1
Outdoor unit
Refrigerant filling capacity(R-22)
kg
2.15
1.65
RT11(at25:)
k"
10
RT12(at25:)
k"
10
NOTE:Test conditions
Cooling : Indoor DB27: / WB19:
Outdoor DB35: / WB24:
8
61
55
Air direction
Special remarks
RA6V60-AA or AB
RA6V50-OD or OF
"
Winding resistance(at20:)
Indoor unit
Weight
98-96
Power factor
%
Model
Indoor
—
A(kW)
Coefficient of performance(C.O.P)
fan motor
25
15
Running current
Auxiliary heater
Compressor
E2
Single phase,220-240V,50Hz
Air flow
Electrical data
MS-24NV - E1
Cooling
E3
Cooling
Power supply
Capacity
E2
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Page 9
OUTLINES AND DIMENSIONS
MS-07NV - E1 MS-09NV - E1
MS-07NV - E2 MS-09NV - E2
Unit : mm
INDOOR UNIT
MU-07NV - E1 MU-09NV - E1
MU-07NV - E2 MU-09NV - E2
OUTDOOR UNIT
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MS-12NV - E1 MS-12NV - E2
Unit : mm
INDOOR UNIT
{
s
side
t/left only
h
g
i
as
rr
nt o e top h ted.
h
c
e fro
If th acant, t nobstru
v
are 10cm u
e
to b
MU-12NV - E1 MU-12NV - E2
OUTDOOR UNIT
If the right/left sides or
back side is vacant,the
front has only to be 50cm
unobstructed.
12.7
10
Page 11
Unit : mm
4holes 11
11✕20
MS-18NV - E3
150
648
217
60
40
995
Indoor unit
20
MS-18NV - E1
MS-24NV - E1
E2
MS-18NV MS-24NV - E2
INDOOR UNIT
450
3
450
297
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438
352
Wall hole [75
Installation plate
1015
190
5
320
Installation plate
{
Air in
50
775
17.5
Air out
Drain hose [16
Insulation [28
Power supply cord
Lead to right 2m
Lead to left 1m
160
56
190
Liquid line [8-0.5m
Gas line [12-0.43m
Insulation [50 O.D
[28
[
28 I.D
s
side
t/left only
h
g
i
as
rr
nt o e top h ted.
h
c
e fro
If th acant, t nobstru
v
u
e
r
m
a
c
e 10
to b
Wireless remote controller
MU-18NV - E1
MU-24NV - E1
MU-18NV - E2
MU-24NV - E2
OUTDOOR UNIT
MU-18NV - E3
If the right/left sides or
back side is vacant,the
front has only to be 50cm
unobstructed.
11
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WIRING DIAGRAM
MS-07NV - E1
MS-09NV - E1
MODELS WIRING DIAGRAM
INDOOR UNIT
❈
❈
❈
❈
❈
NAME
SYMBOL
NAME
SYMBOL
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
F12
FUSE(93:)
RT11
F11
FUSE(3.15A)
RT12
MF
INDOOR FAN MOTOR
HIC1
DC/DC CONVERTER
NAME
SYMBOL
TB
TERMINAL BLOCK
ROOM TEMPERATURE THERMISTOR
MV
VANE MOTOR
INDOOR COIL THERMISTOR
SR11
52C
SOLID STATE RELAY
CONTACTOR
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
MU-07NV - E1
MU-09NV - E1
MODELS WIRING DIAGRAM
OUTDOOR UNIT
❈
❈
SYMBOL
NAME
SYMBOL
NAME
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR (INNER THERMOSTAT)
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
12
NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE (2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
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MS-12NV - E1
MODEL WIRING DIAGRAM
INDOOR UNIT
❈
❈
❈
❈
❈
NAME
SYMBOL
NAME
SYMBOL
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
F12
FUSE(93:)
RT11
F11
FUSE(3.15A)
RT12
MF
INDOOR FAN MOTOR
HIC1
DC/DC CONVERTER
NAME
SYMBOL
TB
TERMINAL BLOCK
ROOM TEMPERATURE THERMISTOR
MV
VANE MOTOR
INDOOR COIL THERMISTOR
SR11
52C
SOLID STATE RELAY
CONTACTOR
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
MU-12NV - E1
MODEL WIRING DIAGRAM
OUTDOOR UNIT
❈
❈
SYMBOL
NAME
SYMBOL
NAME
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR (INNER THERMOSTAT)
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
13
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MS-18NV - E1
INDOOR UNIT
L
Page 14
MODEL WIRING DIAGRAM
TB
❈
BRN
BRN
IC141
❈
N
❈
❈
4
BLK
2
BLK 1
WHT
BLK
BLK
BLU
❈ 3 52C
CN201
3
1
F11
DSAR
GRN/YLW
BRN
POWER
SUPPLY
CORD
1~
220-240V
50Hz
CN
121
C11
❈
NR11
F12
2
TO OUTDOOR
UNIT
CONNECTING
LD1
CN
101
CN
151
CN
102
CN
112
ELECTRONIC CONTROL P.C BOARD
RT12
3
CN211
4
2
1
CN
111
BRN
YLW
GRY
WHT MF
RED
BLK
RT11
5
3
3
MV
RECEIVER
DISPLAY
P.C.BOARD
P.C.BOARD
GRN/YLW
REMOTE
CONTROLLER
NAME
SYMBOL
NAME
SYMBOL
VARISTOR
FUSE(93:)
RT11
ROOM TEMPERATURE THERMISTOR
FUSE(3.15A)
RT12
INDOOR COIL THERMISTOR
MF
INDOOR FAN MOTOR
IC141
HYBRID IC
MV
VANE MOTOR
INDOOR FAN CAPACITOR
F12
F11
52C
NAME
SYMBOL
NR11
C11
TB
TERMINAL BLOCK
DSAR
SURGE ABSORBER
CONTACTOR
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
MODEL WIRING DIAGRAM
MU-18NV - E1
OUTDOOR UNIT
TB
GRN / YLW
TO INDOOR UNIT
CONNECTING
2 ❈
WHT
C
N
C1
BLK
❈
MC
RED
BLK
BLK
WHT
ORN
C2
SYMBOL
NAME
SYMBOL
4
3
2
RED 1
NAME
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR (INNER THERMOSTAT)
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
14
R
S
BLK
WHT
ORN
MF
RED
NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE (2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
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Page 15
MS-24NV - E1
INDOOR UNIT
MODEL WIRING DIAGRAM
220-240V~ 2
❈
RED
HIC1
WHT
F12
N ❈
❈
BLU
2
BLU
BRN
TO OUTDOOR
UNIT
CONNECTING
4
1
❈ 3 52C
CN201
F11
BLU
WHT
LD1
DSAR
CIRCUIT BREAKER
GRN/YLW
WHT 1
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
CN
151
CN
102
CN
101
CN
112
RT12
3
CN
121
TRANS
3
1
BLU
BLU
IC141
NR11
220-240V~ TB ❈
3
C11
OB206t-1.qxp
BRN
YLW
GRY
WHT
RED
BLK
CN211
4
2
1
ELECTRONIC CONTROL P.C BOARD CN
111
MF
RT11
5
3
3
MV
RECEIVER
DISPLAY
P.C.BOARD
P.C.BOARD
GRN/YLW
REMOTE
CONTROLLER
NAME
SYMBOL
SYMBOL
NAME
SYMBOL
NAME
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
TB
TERMINAL BLOCK
F12
FUSE(93¡C)
RT11
ROOM TEMPERATURE THERMISTOR
DSAR
SURGE ABSORBER
F11
FUSE(3.15A)
RT12
INDOOR COIL THERMISTOR
HIC1
DC / DC CONVERTER
MF
INDOOR FAN MOTOR
IC141
HYBRID IC
MV
VANE MOTOR
CONTACTOR
52C
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
MODEL WIRING DIAGRAM
MU-24NV - E1
OUTDOOR UNIT
TB
WHT
2
52C
1
WHT
❈
RED
ORN
WHT
BLK
YLW
C2
BLU
8
X1
BLU
6
3
5
BLU
X1 1
❈
26F1
N
TO INDOOR
UNIT
CONNECTING
RED
7
b
1
2
3
4
5
6
RED
ORN
WHT
BLK
YLW
R
RED
RED
RED
a
RED
RED
❈
TB2
RED 1
S
GRY
220-240V
F
C
MC
52C
3
MF
BLK
220-240V 2
CR
GRN/YLW
C1
BLU
SYMBOL
NAME
SYMBOL
NAME
NAME
SYMBOL
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR
TB
TERMINAL BLOCK
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR (INNER THERMOSTAT)
CR
SURGE ABSORBER
X1
FAN MOTOR RELAY
52C
COMPRESSOR CONTACTOR
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
F
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
15
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Page 16
MS-07NV - E2 MS-09NV - E2 MS-12NV - E2
INDOOR UNIT MODELS WIRING DIAGRAM
TB
L ❈ BRN
BRN
TO OUTDOOR
UNIT
CONNECTING
220-240V~ 2 ❈
WHT
N
❈
SR11
HIC1
F12
BLU
BLU
CN201
1
❈4
NR11
52C
1
GRN/YLW
GRN/YLW
CN
LD101 151
GUARD
PLATE
C11
F11
CN
122
RT12
CN
111
TRANS
CN
121
RT11
BLK
GRY
YLW
BRN
WHT
RED
3
3
2
1
CN211
1
2
3
MF
4
5
6
ELECTRONIC CONTROL P.C BOARD
5
5
POWER MONITOR,
RECEIVER
P.C.BOARD
CIRCUIT BREAKER
MV
REMOTE
CONTROLLER
NAME
SYMBOL
1
2
❈
3
BLU
BLU
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
BLU
CN
112
NAME
SYMBOL
NAME
SYMBOL
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
F12
FUSE(93:)
RT11
F11
FUSE(3.15A)
RT12
MF
INDOOR FAN MOTOR
HIC1
DC/DC CONVERTER
TB
TERMINAL BLOCK
ROOM TEMPERATURE THERMISTOR
MV
VANE MOTOR
INDOOR COIL THERMISTOR
SR11
52C
SOLID STATE RELAY
CONTACTOR
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
MU-07NV - E2 MU-09NV - E2
OUTDOOR UNIT MODELS WIRING DIAGRAM
TB
220-240V~
2
❈
WHT
C
WHT
TO
INDOOR UNIT
CONNECTING
N
❈
F
C2
WHT
BLU
RED
NAME
SYMBOL
1
MC
2
3
R
WHT
BLK
BLK
MF
RED
NAME
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR (INNER THERMOSTAT)
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
16
RED
S
BLU
GRN/YLW
SYMBOL
C1
BLU
NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE (2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
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Page 17
MS-18NV - E2
MODEL WIRING DIAGRAM
INDOOR UNIT
❈
❈
~
❈
❈
❈
NAME
SYMBOL
SYMBOL
NAME
SYMBOL
NAME
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
TB
TERMINAL BLOCK
F12
FUSE(93¡C)
RT11
ROOM TEMPERATURE THERMISTOR
DSAR
SURGE ABSORBER
F11
FUSE(3.15A)
RT12
INDOOR COIL THERMISTOR
HIC1
DC / DC CONVERTER
MF
INDOOR FAN MOTOR
IC141
HYBRID IC
MV
VANE MOTOR
52C
CONTACTOR
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
MODEL WIRING DIAGRAM
MU-18NV - E2
OUTDOOR UNIT
❈
❈
SYMBOL
NAME
SYMBOL
NAME
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR (INNER THERMOSTAT)
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
17
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MS-24NV - E2
Page 18
MODEL WIRING DIAGRAM
INDOOR UNIT
HIC1
TO OUTDOOR
UNIT
CONNECTING N ❈
BLU
BLU
❈
4
2
1
BLU
BLU
BLU
WHT 1
DSAR
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
WHT
LD1
CN
151
CN
102
CN
101
52C
❈3
CN
121
TRANS
RT12
3
CN211
F11
4
2
1
ELECTRONIC CONTROL P.C BOARD
CN
111
BRN
YLW
GRY
WHT
RED
BLK
MF
RT11
5
3
3
MV
DISPLAY
P.C.BOARD
RECEIVER
P.C.BOARD
CIRCUIT BREAKER
GRN/YLW
CN201
3
1
CN
112
IC141
NR11
❈ WHT F12
BRN
GRN/YLW
220-240V~ 2
RED
C11
TB
220-240V~ 3 ` ❈
REMOTE
CONTROLLER
NAME
SYMBOL
SYMBOL
NAME
SYMBOL
NAME
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
TB
TERMINAL BLOCK
F12
FUSE(93¡C)
RT11
ROOM TEMPERATURE THERMISTOR
DSAR
SURGE ABSORBER
F11
FUSE(3.15A)
RT12
INDOOR COIL THERMISTOR
HIC1
DC / DC CONVERTER
MF
INDOOR FAN MOTOR
IC141
HYBRID IC
MV
VANE MOTOR
CONTACTOR
52C
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
MU-24NV - E2
MODEL WIRING DIAGRAM
TB
OUTDOOR UNIT
52C
2
WHT
2
WHT
1
❈
RED
ORN
WHT
BLK
YLW
C2
8
BLU
N
X1
RED
7
6
BLU
❈
3
5
X1 1
A2/b
26F1
TO INDOOR
UNIT
CONNECTING
BLU
RED
RED
TB2
A1/a
RED 1 RED
SYMBOL
R
CR
C1
GRN/YLW
NAME
C
MC
RED
RED
F
MF
S
GRY
3
❈
BLU
NAME
NAME
SYMBOL
MF
OUTDOOR FAN MOTOR
TB
TERMINAL BLOCK
MC
COMPRESSOR (INNER THERMOSTAT)
CR
SURGE ABSORBER
X1
FAN MOTOR RELAY
52C
COMPRESSOR CONTACTOR
TB2
TERMINAL BLOCK
26F1
THERMAL READ SWITCH
C1
COMPRESSOR CAPACITOR
C2
OUTDOOR FAN CAPACITOR
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
18
RED
ORN
WHT
BLK
YLW
52C
220-240 ~
SYMBOL
1
2
3
4
5
6
BLK
220-240 ~
F
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
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Page 19
MS-18NV - E3
MODEL WIRING DIAGRAM
INDOOR UNIT
TB
BRN
❈
BRN
❈
N
F12
❈ WHT
❈
❈
4
BLU
2
BLU
CN201
3
1
1
BLU
BLU
❈3
DSAR
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
CIRCUITBREAKER
CN
151
BRN
YLW
GRY
WHT MF
RED
BLK
4
2
1
LD1
CN
102
3
CN211
F11
CN
101
RT12
CN
121
TRANS
BRN
BLU
52C
C11
2
CN
112
IC141
NR11
220-240V~
HIC1
GRN/YLW
L
TO OUTDOOR
UNIT
CONNECTING
ELECTRONIC CONTROL P.C BOARD
CN
111
RT11
5
3
3
MV
RECEIVER
DISPLAY
P.C.BOARD
P.C.BOARD
GRN/YLW
REMOTE
CONTROLLER
NAME
SYMBOL
NAME
SYMBOL
C11
INDOOR FAN CAPACITOR
NR11
VARISTOR
F12
FUSE(93¡C)
RT11
F11
FUSE(3.15A)
RT12
MF
INDOOR FAN MOTOR
IC141
HYBRID IC
MV
VANE MOTOR
52C
NAME
SYMBOL
TB
TERMINAL BLOCK
ROOM TEMPERATURE THERMISTOR
DSAR
SURGE ABSORBER
INDOOR COIL THERMISTOR
HIC1
DC / DC CONVERTER
CONTACTOR
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
MU-12NV - E2 MU-18NV - E3
OUTDOOR UNIT MODELS WIRING DIAGRAM
TB
220-240V~
2
❈
WHT
C
WHT
TO
INDOOR UNIT
CONNECTING
N
❈
C1
BLU
RED
S
MC
R
F
BLK
GRN/YLW
C2
RED
RED
1
ORN
2
WHT
WHT
3
BLU
BLK
4
ORN
SYMBOL
NAME
SYMBOL
NAME
C1
COMPRESSOR CAPACITOR
MF
OUTDOOR FAN MOTOR
C2
OUTDOOR FAN CAPACITOR
MC
COMPRESSOR (INNER THERMOSTAT)
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”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
MF
NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
19
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Page 20
REFRIGERANT SYSTEM DIAGRAM
Unit:mm
MS-07NV - E1
MS-07NV - E2
MS-09NV - E1
MS-09NV - E2
MU-07NV - E1
MU-07NV - E2
Refrigerant pipe [9.52
(Option)
(with heat insulator)
Stop valve
(with service port)
INDOOR UNIT
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
MU-09NV - E1
MU-09NV - E2
OUTDOOR UNIT
Outdoor
heat
exchanger
Flared
connection
Accumulator
Room temperature
thermistor
RT11
Compressor
Capillary tube
[1.6x1200
Strainer
Refrigerant pipe
[6.35
(Option)
(with heat insulator)
MS-12NV - E1
Indoor
heat
exchanger
Refrigerant pipe [12.7
(Optional)
(with heat insulator)
Indoor coil
thermistor
RT12
Room temperature
thermistor
RT11
Flared
connection
MU-12NV - E2
OUTDOOR UNIT
Stop valve
(with service port)
Outdoor
heat
exchanger
Compressor
Stop valve
Refrigerant pipe
[6.35
(Option)
(with heat insulator)
20
Unit:mm
MU-12NV - E1
MS-12NV - E2
INDOOR UNIT
Refrigerant flow in cooling
Capillary tube
[1.8x800
Strainer
Refrigerant flow in cooling
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Page 21
Unit:mm
MS-18NV - E1
MS-18NV - E3
MS-18NV - E2
INDOOR UNIT
MU-18NV - E2
OUTDOOR UNIT
Refrigerant pipe [15.88
(Option)
(with heat insulator)
Indoor coil
thermistor
RT12
Indoor
heat
exchanger
MU-18NV - E1
MU-18NV - E3
Accumulator
Stop valve
(with service port)
Strainer
Distributor
Flared
connection
Room temperature
thermistor
RT11
Outdoor
heat
exchanger
Compressor
Capillary tube
[2.0X700
Stop valve
Refrigerant pipe
[6.35
(Option)
(with heat insulator)
Refrigerant flow in cooling
Unit:mm
MS-24NV - E1
INDOOR UNIT
Indoor
heat
exchanger
MU-24NV - E1
MS-24NV - E2
Refrigerant pipe [15.88 (Option)
(with heat insulator)
Indoor coil
thermistor
RT12
Distributor
Room temperature
thermistor
RT11
MU-24NV - E2
OUTDOOR UNIT
Accumulator
Stop valve
(with service port)
Outdoor
heat
exchanger
Flared
connection
Compressor
Stop valve
Capillary tube
[1.6X350
Discharge
Pressure
Regulator
Capillary tube [2.0X700
Strainer
Refrigerant pipe
[9.52
(Option)
(with heat insulator)
Refrigerant flow in cooling
21
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Page 22
MAX. REFRIGERANT PIPING LENGTH
Refrigerant piping
Max. length : m
Model
MS-07NV
MS-07NV
MS-09NV
MS-09NV
MS-12NV
MS-12NV
MS-18NV
MS-18NV
MS-18NV
-
E1
MS-24NV MS-24NV -
E1
E2
Piping size O.D : mm
A
Gas
10
9.52
Length of connecting pipe : m
Liquid
E1
Indoor unit
Outdoor unit
0.43
0
6.35
E2
E1
12.7
E2
E1
15
E2
15.88
E3
9.52
E2
MAX. HEIGHT DIFFERENCE
ADDITIONAL REFRIGERANT CHARGE(R-22 : g)
Outdoor unit precharged
(up to 7m)
Model
MS-07NV
MS-07NV
MS-09NV
MS-09NV
MS-12NV
MS-12NV
MS-18NV
MS-18NV
MS-18NV
MS-24NV
MS-24NV
-
E1
10m
15m
0
45
120
650
E2
E1
E2
E1
900
850
800
E2
E1
E2
1650
E3
E1
E2
Calculation : Xg=15g/m✕(A-7)m
22
Refrigerant piping length (one way)
7m
2150
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Page 23
EVACUATION PROCEDURES(AIR PURGE)
Connect the refrigerant pipes (both the liquid and gas pipes)
between the indoor and the outdoor units.
Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe (The stop valve will not
work in its initial state fresh out of the factory (totally closed with cap on)).
When vacuuming
Connect the gage manifold valve and the vacuum pump to
the service port of the stop valve on the liquid pipe side of the
outdoor unit.
Run the vacuum pump for more than 15 minutes and at this
time confirm that the pressure gage indicates 0.1 Mpa.
Check the vacuum with the gage manifold valve, then close
the gage manifold valve, and stop the vacuum pump.
Leave it as is for one or two minutes. Make sure the pointer
of the gage manifold valve remains in the same position.
Remove the gage manifold valve quickly from the service port of the stop valve.
After refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides
Operating without fully opening lowers the performance and causes trouble.
Pipe length :
7m maximum
No gas charge
is needed.
Pipe length
exceeding 7m
Charge the prescribed
amount of gas.
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
23
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Page 24
PERFORMANCE CURVES
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
provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
Rated voltage : ±10% (198 ~ 264V),50Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature
(2) Indoor outlet air wet-bulb temperature
(3) Outdoor intake air dry-bulb temperature
(4) Total input
:°CWB
:°CWB
:°CDB
:W
}
Cooling
Indoor air wet-bulb temperature difference on the left side of the chart on next page shows the difference between the
indoor intake air wet-bulb temperature and the indoor outlet air wet-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb temperature difference
1.
2.
3.
4.
5.
6.
7.
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.
Attach at least 2 sets of dry-bulb thermometers to the outdoor air inlet.
Cover the thermometers to prevent direct rays of the sun.
Check that the air filter is cleaned.
Open windows and doors of room.
Press the EMERGENCY OPERATION switch to start the EMERGENCY operation.
When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
10 minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT
24
OUTDOOR UNIT
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Page 25
E3
OB206t-1.qxp
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
① Both indoor and outdoor unit are under the same temperature/humidity condition.
Dry-bulb temperature
Relative humidity(%)
20
50
25
60
30
70
➁ Air flow should be set at MAX.
(kgf/F•G)(MPa•G)
MU-07NV - E1
E2
(kgf/F•G)(MPa•G)
E2
8
7
6
220/240V
5
4
Outdoor low pressure
8
7
6
220/240V
5
4
3
3
Ambient temperature(˚C)Ambient humidity(%)
Ambient temperature(˚C)Ambient humidity(%)
MU-09NV - E1
E2
220V
240V
Ambient temperature(˚C)Ambient humidity(%)
Outdoor unit current(A)
MU-07NV - E1
Outdoor unit current(A)
Outdoor low pressure
MU-09NV - E1
E2
220V
240V
Ambient temperature(˚C)Ambient humidity(%)
25
25/9/97 6:44 PM
MU-12NV - E1
E2
7
7
6
6
5
220/240V
4
3
Ambient temperature(˚C)Ambient humidity(%)
Outdoor unit current(A)
MU-12NV - E1
220V
240V
MU-24NV - E1
E2
8
Outdoor low pressure
7
6
5
220/240V
4
3
Ambient temperature(˚C)Ambient humidity(%)
MU-24NV - E1
Outdoor unit current(A)
E2
E3
220/240V
5
4
3
Ambient temperature(˚C)Ambient humidity(%)
MU-18NV - E1
E2
Ambient temperature(˚C)Ambient humidity(%)
(kgf/F•G)(MPa•G)
MU-18NV - E1
2
2
E2
220V
240V
Ambient temperature(˚C)Ambient humidity(%)
26
(kgf/F•G)(MPa•G)
Outdoor unit current(A)
Outdoor low pressure
(kgf/F•G)(MPa•G)
Page 26
Outdoor low pressure
OB206t-1.qxp
E2
E3
220/240V
Ambient temperature(˚C)Ambient humidity(%)
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8
Page 27
MICROPROCESSOR CONTROL
Wireless remote controller
MS-07NV
MS-18NV
MS-09NV
MS-24NV
- E1
- E1
- E2
- E2
MS-09NV
MS-24NV
MS-12NV
MS-18NV
- E1
- E1
- E2
- E3
MS-12NV - E1
MS-07NV - E2
MS-18NV - E2
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 turns 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
more than 25:
.
13: to 25:
mode
COOL mode of
“I FEEL CONTROL“
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 as the
operation starts.
● 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
INDOOR UNIT DISPLAY SECTION
Previous operation
COOL mode of
“I FEEL CONTROL”
or COOL mode
Restart
COOL or DRY mode of
“I FEEL CONTROL” that
determined by initial
room temperature at
start-up of the operation.
27
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Page 28
(4) The initial set temperature is decided by the initial room temperature.
Model
Initial room temperature
COOL mode of
"I FEEL CONTROL"
26: or more
24:
❈1
26: or less
DRY mode of
"I FEEL CONTROL"
Initial set temperature
13: or 25:
Initial room temperature
minus 2:
Initial room temperature
minus 2:
❈1 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 1~2 degrees(°C)
▼ TOO
WARM … To lower the set temperature 1~2 degrees(°C)
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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
<MS-/0709/12> When the indoor coil thermistor RT12 reads 4°C or below for 5 minutes, the coil frost prevention mode
starts.
<MS-18/24> When the indoor coil thermistor RT12 reads -1°C 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 4°C (MS-07/09/12) or below -1°C (MS-18/24) this mode prolonged until the RT12 reads
over 4°C (MS-07/09/12) or -1°C (MS-18/24).
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 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.
● Indoor fan operates at the set speed by FAN SPEED CONTROL button.
Followings are the fan speed in AUTO.
Fan speed
Initial temperature difference
Room temperature minus set temperature : 2 degrees or more············································Hi
Room temperature minus set temperature : 1 degree or more and less than 2 degrees·····Me
2 deg. 4 deg.
Room temperature minus set temperature : less than 1 degree···········································Lo
1 deg. 1.66 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 23°C or over:
Compressor operates by temperature control and time control.
① Set temperature is controlled to fall 2°C 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 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.
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Operation time chart
Example
ON
1st ON
OFF
Thermostat
Indoor fan
OFF
ON
Outdoor fan
compressor
OFF
ON
OFF
8 min.
ON
ON
ON
ON
OFF
3 min.
1 min.
NOTE ● Coil frost prevention during DRY mode of “I FEEL CONTROL”
The operation is same as coil frost prevention during COOL mode of “I FEEL CONTROL” excepting the
indoor fan is OFF.
● During coil frost prevention the outdoor fan speed becomes Lo and the indoor fan is OFF.
(Because the coil frost prevention is 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 TEMPERATURES button.
(TOO WARM or TOO COOL button)
The setting range is 16 ~ 31°C
✻ Indoor fan continues to operate regardless
of thermostat’s OFF-ON
✻ Coil frost prevention is as same as COOL
mode of “I FEEL CONTROL”
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.)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.
(5) When DRY operation functions, the fan
speed is lower than cool operation.
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4.FAN( d )OPERATION
(1)Press POWER ON/OFF button.
(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.
5. FAN MOTOR CONTROL
(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,SLEEP),
the microprocessor controls SR11 (MS-07/09/12), IC141 (MS-18/24) 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.
SLEEP
(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
lamp flashes on and off to show the fan motor abnormality. (See page 38.)
6. AUTO VANE OPERATION
(1) Vane motor drive
MS(D)-N series is equipped with a stepping motor for the vane. The rotating direction, speed, and angle of the motor are
controlled by pulse 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 is once pressed to the vane stopper 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 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 vane angle and operation to make the optimum
room-temperature distribution.
① In COOL and DRY operation
Vane angle is fixed to Angle 1.
➁ In FAN operation
Vane angle is fixed to Angle 4.
(5) 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.
(6) SWING MODE (
)
By pressing the SWING button (
) vane swings vertically. The remote controller displays “ ”. SWING mode is cancelled when the SWING button or VANE CONTROL button (
) is pressed or the operation stops or changes to other
mode.
7. SLEEP MODE (
)
• When the SLEEP button (
indoor unit is decreased.
) is pressed, the indoor fan speed drops and the air flow sound from the
• The indications of the remote controller are “
• When the FAN SPEED CONTROL button (
mode is released.
32
” and “
”.
) is pressed during the SLEEP mode , the SLEEP
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8. 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 CLOCK SET button.
(3) Press TIMER CONTROL button to select the operation.
“
” button... AUTO START operation (ON timer)
“
” 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 “
” or “
” 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. (“
To cancel the ON timer, press the “
” or “
”)
” button.
To cancel the OFF timer, press the “
” 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.
NOTE : TIMER setting will be cancelled by power failure or breaker functioning.
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9. EMERGENCY-TEST OPERATION
When the remote controller is missing, or has failed, or when 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 24°C.
The fan shifts to Me 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 operation.
In the test run or Emergency operation, the horizontal vane operates in AUTO mode with a set temperature of 24°C.
NOTE : Do not press the EMERGENCY OPERATION switch during normal operation.
Press once
<Cool>
Press again
<Stop>
Emergency operation
switch
9
SERVICE FUNCTIONS
1. 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
}
2. 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 number of the indoor unit.
(1) <The reset button can be located on the rear side.>
MS-07NV - E1
MS-24NV - E1
MS-09NV - E1
MS-18NV - E2
MS-12NV - E1
MS-18NV - E1
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 at first.
After finish remodeling, put back the batteries then push the RESET button.
The P.C.board has the print “J10” and “J20”.Jumper wires are mounted to each “J10” and “J20”.Replace J20 and J10 with
J21 and J11 according to the number of indoor unit as shown in Table 1.
After modification,push the reset button near the batteries.
Table.1
1 unit operation
2 units operation
3 units operation
4 units operation
No. 1 unit
No modification
Same as at left
Same as at left
Same as at left
No. 2 unit
–
Replace J10 with J 11
Same as at left
Same as at left
No. 3 unit
–
–
Replace J20 with J 21
No. 4 unit
–
–
–
Same as at left
Replase J10 with J11
Replase J20 with J21
Note : When power supply failure or installation time, Indoor unit will delete memory about its remote controller so when power
supply is restoration again, indoor unit recommend its remote controller by receive signal from remote controller at first.
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(2)<The reset button can be located on the front side.>
MS-07NV
MS-12NV
MS-07NV
MS-12NV
MS-24NV
- E1
- E1
- E2
- E2
- E2
(Product number 7000001T~)
(Product number 7000001T~)
MS-09NV
MS-24NV
MS-09NV
MS-18NV
MS-18NV
- E1
- E1
- E2
- E2
- E3
(Product number 7000001T~)
(Product number 7000001T~)
(Product number 7000001T~)
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 at 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.
Table.1
1 unit operation
2 units operation
3 units operation
4 units operation
No. 1 unit
No modification
Same as at left
Same as at left
Same as at left
No. 2 unit
–
Cut J1
Same as at left
Same as at left
No. 3 unit
–
–
Cut J2
Same as at left
No. 4 unit
–
–
–
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.
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2. AUTO RESTART FUNCTION
MS-07NV - E2
MS-12NV - E2
MS-18NV - E3
MS-09NV - E2
MS-24NV - E2
When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are
memorized by the indoor electronic control P.C.board. The “AUTO RESTART FUNCTION” sets to work the moment power
has restored after power failure.Then, the unit will restart automatically. However if the unit is operated in “I FEEL CONTROL.” mode before power failure, the operation is not memorized. In “I FEEL CONTROL.” mode, the operation is decided
by the initial room temperature.
How to set “AUTO RESTART FUNCTION”
1Turn off the main power for the unit.
2Removed the electronic control P.C. board and the display P.C.board.(See page 45 and 47.)
3Cut the RESISTOR JR07 (MS-07/09/12) or JR06(MS-18/24) on the indoor electronic control P.C.board.
MS-07/09/12
MS-18/24
IC141
CN2
11
CN211
C11
C11
52C
CN201
52C
CN151
JR07
CN112 CN111 CN121
CN151 SW
BZ
RA102
SW
IC101
CN102 CN101
IC101
CN121
CN112 CN111
CN201
JR06
Operation
1If the main power (220/240V AC) has been cut, the operation settings remain.
2After the power is restored, the unit restarts automatically according to the memory.(However, it takes at least 3 minutes
for the compressor to start running.)
Note:
•The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote
controller.
•If main power is turned off while AUTO START/STOP timer is active, the timer setting is cancelled when auto restart
function works.
•If the unit has been off with the remote controller before power failure, the auto restart function does not works as the
power button of the remote controller is off.
•To prevent breaker off due to the rush of startting current, systematize other home appliance not to turn on at the same
time.
•When more than one air conditioners are connected under the same power system,compressor starting current as large
as that for all the compressors used flows at a time as soon as the units restart automatically.
Therefore, the specific counter-measures are required to prevent main voltage drop or the rush of starting current after
power failure by providing the system to allow the units to start in regular succession.
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10
Page 37
TROUBLESHOOTING
MS-07NV - E1
MS-24NV - E1
MS-18NV - E2
MS-09NV - E1
MS-07NV - E2
MS-24NV - E2
MS-12NV - E1
MS-09NV - E2
MS-18NV - E3
MS-18NV - E1
MS-12NV - E2
10-1 Cautions on troubleshooting
10-1-1 Before troubleshooting, check the followings:
1) Check the power supply voltage.
2) Check the indoor/outdoor connecting wire for mis-wiring.
10-1-2 Take care the followings during servicing.
1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then after
confirming the horizontal vane is closed, turn off the breaker.
2) When removing the electronic control 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.
10-1-3 Troubleshooting procedure
1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality.
To make sure, check the abnormality indication for 2 or 3 times before starting service work.
2) If the electronic control 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 38.
10-1-4 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.
This remote controller has the reset button. After refilling new batteries, press the reset button with tip end of ball point
pen or the like, and then use the remote controller.
B
A
RESET button
RESET button
There are two kinds of remote controllers. A type has the RESET button at the back, and B type does it on the front.
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10-2 Instruction of troubleshooting
Start
Indoor unit
doesn’t receive
the signal from
remote
controller.
Indoor unit operates. Outdoor unit
doesn’t operate.
Indoor unit doesn’t
receive the signal from
remote controller.
Also, OPERATION INDICATOR lamp doesn’t
flash, when the EMERGENCY OPERATION
switch is pressed.
OPERATION INDICATOR
lamp on the indoor unit is
flashing on and off.
2-time flash
Outdoor unit
operates in
only Test
Run operation.
Outdoor unit
doesn’t operate even in
Test Run
operation.
Refer to B
”Check of
receiver P.C.
board” on page
40.
2.5-second OFF
3-time flash
Refer to C “Check of
indoor electronic control
P.C. board” on page 41.
2.5-second OFF
Refer to D
“Check of
outdoor unit”
on page 41.
Check room
temperature
thermistor.
Cause:Indoor unit
2-time-Room temperature/Indoor coil thermistor trouble
3-time-Indoor fan motor trouble
Check indoor coil
thermistor. Refer
to“Test point diagram and voltage”
on page 42~44.
Refer to A
“Check of indoor
fan motor” on
page 40.
Check room temperature
thermistor. Refer to“Test
point diagram and voltage” on page 42~44.
10-2-1 troubleshooting check table
❈ 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
Outdoor unit
does not run.
Detect Indoor coil/room temperature thermistor short or
open circuit every 2 seconds
during operation.
Check point
● Check thermistor calibration.
● Reconnect connector.
● Check indoor electronic control P.C.
board.
2.5-second OFF
Indoor fan
motor
2.5-second OFF
38
Detect method
2-time flash
3-time flash
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 connector.
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MS-07NV - E1
MS-24NV - E1
10-2-2 Trouble criterion of main parts MS-18NV - E2
Part name
Check method
Room
temperature
thermistor
MS-09NV MS-07NV MS-24NV and criterion
MS-12NV MS-09NV MS-18NV -
E1
E2
E2
E1
E2
MS-18NV MS-12NV -
E1
E2
E3
Figure
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Indoor coil
thermistor
Normal
Abnormal
8kΩ ~ 20kΩ
Opened or short-circuited
Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)
WHT C
P
Normal
Compressor
07NV
09NV
12NV
Abnormal
24NV
18NV
AUX
~
MAIN
R
BLK
S
C-R 3.67~4.50Ω 3.56~4.36Ω 1.86~2.28Ω 1.05~1.30Ω 0.84~1.04Ω
Opened or
C-S 5.07~6.21Ω 5.25~6.44Ω 3.50~4.29Ω 2.38~2.92Ω 1.82~2.24Ω short-circuited
RED
Motor part
Measure the resistance between the terminals with a tester.
(Coil wiring temperature10°C ~ 30°C)
Normal
WHT-BLK
BLK-RED
Indoor fan
motor
07/09/12NV
18/24NV
280 ~ 303Ω
176 ~ 192Ω
313 ~ 336Ω
Abnormal
MAIN
Opened or
short-circuited
240 ~ 261Ω
AUX
FUSE
Sensor part
Measure the voltage Power ON.
BLK
Normal
RED WHT
Abnormal
BRN-YLW
4.5 ~ 5.5V
YLW-GRY
(When fan revolved one time)
0V➔5V➔0V
(Approx.)
Remain 0V or 5V
07NV
09NV
MAIN
AUX
P
Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)
12NV
18NV
Normal
Outdoor fan
motor
07/09NV
12NV
BLK
18NV
24NV
WHT-BLK
236 ~ 290Ω
115 ~ 141Ω 102 ~ 126Ω 71.5 ~ 87.5Ω
BLK-RED
344 ~ 422Ω
118 ~ 146Ω 97.9 ~ 120Ω 90.1 ~ 111Ω
BLK-YLW
RED WHT
MAIN
AUX
Abnormal
P
Opened or
short-circuited
BLK
RED ORN WHT
81.3 ~ 99.5Ω
24NV
MAIN
AUX
MAIN
P
YLW BLK RED ORN WHT
Measure the resistance between the terminals with a tester.
(Part temperature10°C ~ 30°C)
Vane motor
Normal
07/09/12NV 282 ~ 305Ω
18/24NV
358 ~ 388Ω
PNK
ROTOR
Abnormal
Opened or short-circuited
ORN
RED
YLW
BLU
P INNER PROTECTOR
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A Check of indoor fan motor
Turn OFF power supply.
Check connector CN211 visually.
Indoor fan does not operate.
No
No
Yes
Are lead wires connected?
Is soldered point normal?
Yes
Reconnect the lead
wires.
Resolder it.
Disconnect lead wires from connector CN211 on indoor electronic control P.C. board.
Measure resistance between lead wires
No.1 and No.4 and then No.1 and No.2(MS-12/18/24)
No.1 and No.3 and then No.2 and No.3(MS-07/09)
{
Is resistance 0 (short circuit) or ∞ (open circuit)?
No
(others)
Yes ( 0 or ∞ )
}
Replace the indoor electronic control P.C.
board.
Repair the indoor fan motor.
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 37.)
(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 on a radio to AM and press switch on
remote controller.
Yes
No
OK
Replace the remote controller.
Is noise heard from radio?
Yes
Are there any fluorescent lights of
inverter or rapid-start type within
the range of 1m?
Yes
● Re-install the unit away from lights.
● Attach a filter on receiving part.
No
Turn ON power supply.
Measure the voltage between
receiver P.C. board connector No.2(+)and No.1(MS-12/18/24)
{ indoor electronic control P.C. board connector LD101 No.2 and JPG(MS-07/09) }
when remote controller button is pressed.
Yes
Is the voltage approx. 4V DC?
No(5V or 0V DC)
Replace the receiver.
40
Replace the indoor electronic control P.C.
board.
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Page 41
C Check of indoor electronic control P.C. board
The unit doesn’t operate with
the remote controller.
Also, the OPERATION INDICATOR lamp doesn’t light up by
pressing the EMERGENCY
OPERATION switch.
Replace the fuse.
Trouble of indoor electronic control P.C. board.
Yes
Yes
No
Is fuse(F11)blown?
Check both “parts side” and
“pattern side” of indoor
electronic control P.C.board
visually.
1.Pull out power supply
cord.
2.Measure voltage
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
07NV
09NV
CN201
3
Yes
1
F12
Replace the varistor.
12NV
18NV
24NV
L
N Terminal
block
CN201
1
2
F12
L
N Terminal
block
D Check of outdoor unit
Compressor and outdoor fan do not operate.(Only indoor fan operates.)
MS-07NV
MS-09NV
MS-12NV
MS-18NV
MS-24NV
Start
Press EMERGENCY OPERATION
switch.
3-minute time delay works.
Test run operation operates for 30
minutes.
Start
Press EMERGENCY OPERATION
switch.
3-minute time delay works.
Test run operation operates for 30
minutes.
Check the continuity of
indoor and outdoor unit
connection.
No
Yes
Check the outdoor
fan motor and
compressor.
Yes
Check the
the continucontiCheck
nuity
of indoor
ity
of indoor
and
and outdoor
unit
outdoor
unit conconnection.
nection.
Check voltage to terminal block of
outdoor unit. Is there AC220-240V to
terminal block between 2 - N ?
No
Check voltage to terminal block of
indoor unit. Is there AC220-240V to
terminal block between 2 - N ?
No
Replace the indoor electronic control P.C. board.
Check voltage to terminal block of
outdoor unit. Is there AC220-240V to
terminal block between 2 - N ?
Replace the indoor electronic control P.C.board.
No
Yes
Check voltage to terminal block of
outdoor unit. Is there AC220-240V to
terminal block between 3 - N ?
Yes
Check the outdoor wiring and conductor relay at first, then check the
outdoor fan motor and compressor.
No
Check voltage to terminal block of
indoor unit. Is there AC220-240V to
terminal block between 3 - N ?
Yes
Check the continuity of indoor and
outdoor unit connection.
41
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Page 42
TEST POINT DIAGRAM AND VOLTAGE
MS-18NV - E1
Indoor electronic control P.C. board
}
Fan motor power supply
Fuse AC250V 3.15A
}
Power supply input AC220-240V
+
C144
--
C144
}
DC5V
Indoor coil thermistor (RT12)
Room temperature thermistor (RT11)
JPS
Time short mode point
JPG
Emergency operation switch
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12)
42
--
JPG
+
JP43
}
DC12V
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Page 43
TEST POINT DIAGRAM AND VOLTAGE
MS-07NV - E1 MS-09NV - E1 MS-12NV - E1
MS-07NV - E2 MS-09NV - E2 MS-12NV - E2
Indoor electronic control P.C. board
}
Power supply input
AC220-240V
Varistor(NR11)
CN201 No1
Fuse AC250V 3.15A
Room temperature thermistor
(RT11)
Indoor coil thermistor
(RT12)
Timer short mode point
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12)
43
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Page 44
TEST POINT DIAGRAM AND VOLTAGE
MS-24NV - E1 MS-18NV - E2
MS-24NV - E2 MS-18NV - E3
Indoor electronic control P.C. board
}
Fan motor power supply
Fuse AC250V 3.15A
}
Power supply input
AC220-240V
+ C144
-- C144
}
DC5V
Room temperature thermistor(RT11)
Indoor coil thermistor(RT12)
Timer short mode point
Emergency
operation switch
-+
JPG
JP45
}
DC12V
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12)
44
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11
Page 45
DISASSEMBLY INSTRUCTIONS
NOTE:
❈ 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.
➁ Pull the wire while pushing
the locking lever.
11-1 MS-07NV - E1
MS-07NV - E2
INDOOR UNIT
MS-09NV - E1
MS-09NV - E2
MS-12NV - E1
MS-12NV - E2
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
Screws
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) Remove the cord clamp.
(6) Disconnect all the connectors on the electronic control P.C.
board.
(7) Remove the screw of the ground wire.
(8) Disconnect the white lead wire and the brown lead wire
from 52C relay.
(9) Remove the electronic control P.C. board and the display
P.C. board.
Photo 2
Room temperature
thermistor connector
Ground wire screw
Cord clamp
Terminal block
cover
Indoor electronic
control P.C.board
Terminal block
cover screw
45
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Page 46
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 CN121) 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.
Catch
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 hexagon socket set screws.
(7) Remove the line flow fan and the fan motor.
Photo 4
Fan motor
catches
Fan motor
fixture
46
Indoor coil
thermistor
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Page 47
11-2 MS-18NV - E1 MS-24NV - E1 MS-18NV MS-24NV - E2 MS-18NV - E3
INDOOR UNIT
OPERATING PROCEDURE
E2
PHOTOS
1. Removing the front panel
(1) Remove the screws caps at the down 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
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 electriccal cover.
Remove the screw, remove the terminal 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 control P.C. board.
Photo 2
Ground
Indoor coil thermistor
Screw
Terminal
block
screw
Indoor
electronic
control
P.C. board
47
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Page 48
OPERATING PROCEDURE
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 CN121) and
the vane motor connector (CN151) on the electronic control P.C. board.
(5) Remove the screw of the electrical box, remove the electrical box.
PHOTOS
screw
Photo 3
screw
4. Removing the indoor fan motor and the line flow fan
(1) Remove the front panel.
(2) Remove the electrical box.
(3) Unhook the catches 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 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 motor band, 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
48
Motor band
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Page 49
11-3 MU-07NV - E1 MU-09NV OUTDOOR UNIT
E1
MU-07NV -
E2
MU-09NV -
OPERATING PROCEDURE
E2
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 panel
Screws for
cabinet
Photo 2
Screw for
top panel
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 propeller fan in position by using the cut on the
shaft and the mark on the propeller 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
49
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Page 50
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 with a burner.
PHOTOS
Photo 4
Discharge pipe
Terminal cover
NOTE
● Before using a burner, purge gas from the pipes until the pressure gauge shows 0 kg/cm2.
● Use the burner under the condition that gas can be released
even when the inner pressure rises by heat.
compressor
50
Suction pipe
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Page 51
11-4 MU-12NV - E1
MU-18NV - E1
E2
MU-18NV MU-24NV - E2
OUTDOOR UNIT
OPERATING PROCEDURE
MU-24NV MU-18NV -
E1
MU-12NV -
E2
E3
PHOTOS
1. Removing the cabinet
(1) Remove the screws of the cabinet.
(2) Hold the bottom of the cabinet on the both side to remove
the cabinet.
Photo 1
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
51
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Page 52
OPERATING PROCEDURE
3. Removing the outdoor fan motor
(1) Remove the cabinet. (Refer to 1)
(2) Disconnect the connector remove the hooked lead wire
from the fan motor.
(3) Remove the propeller nut and remove the propeller.
(4) Remove screws securing the fan motor.
PHOTOS
Hook
Photo 4
Connector
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 fixing the compressor.
Remove the compressor.
Propeller nut
Photo 5
Discharge
pipe
Suction
pipe
Compressor
Compressor set nuts
52
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12
Page 53
PARTS LIST
INDOOR UNIT
STRUCTURAL PARTS
MS-07NV - E1 (WH)
MS-09NV - E1 (WH)
MS-12NV - E1 (WH)
MS-07NV - E2 (WH)
MS-09NV - E2 (WH)
MS-12NV - E2 (WH)
5
1
4
6
Optional part
(See page 62.)
2
3
Symbol
NO.
Part No.
Part Name
in Wiring
Diagram
E02 202 000 FRONT PANEL(WH)
1
Q'ty/unit
MS-07NV- E1 MS-07NV- E2 MS-09NV- E1
(WH)
(WH)
1
1
E02 158 000 FRONT PANEL(WH)
MS-09NV- E2 MS-12NV- E1 MS-12NV- E2
(WH)
(WH)
1
1
E02 160 000 FRONT PANEL(WH)
(WH)
(WH)
1
1
2
E02 151 010 GRILLE(WH)
1
1
1
1
1
1
3
E02 164 100 AIR FILTER
2
2
2
2
2
2
E02 151 234 BOX(WH)
1
4
1
1
1
5
E02 151 970 INSTALLATION PLATE
1
1
1
1
1
1
6
E02 166 067 SCREW CAP(WH)
2
2
2
2
2
2
INDOOR UNIT
HEAT EXCHANGER
MS-07NV - E1 (WH)
MS-09NV - E1 (WH)
MS-12NV - E1 (WH)
MS-07NV - E2 (WH)
MS-09NV - E2 (WH)
MS-12NV - E2 (WH)
2
Symbol
Part No.
Part Name
in Wiring
Diagram
1
2
3
2PCS/SET
1
3
NO.
1PC/SET
1
1
E02 166 234 BOX(WH)
Remarks
E02 151 620 INDOOR HEAT EXCHANGER
Q'ty/unit
MS-07/09NV(WH)
MS-12NV- E1
(WH)
E2
Remarks
1
{9.52
1
E02 155 666 UNION(GAS)
E02 151 667 UNION(LIQUID)
E2
1
E02 155 620 INDOOR HEAT EXCHANGER
E02 151 666 UNION(GAS)
E1
1
1
{12.7
1
{6.35
53
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Page 54
INDOOR UNIT
ELECTRICAL PARTS
MS-07NV - E1 (WH)
MS-09NV - E1 (WH)
MS-12NV - E1 (WH)
MS-07NV - E2 (WH)
MS-09NV - E2 (WH)
MS-12NV - E2 (WH)
8 16
9
7
11
10
6
3
5
1
2
4
13
12
Part number that are circled is not shown in the illustration.
Symbol
NO.
Part No.
Part Name
Q'ty/unit
in Wiring MS-07NV(WH)
Diagram
E1 E2
MS-09NV(WH)
E1 E2
MS-12NV(WH)
E1 E2
Remarks
1
E02 166 235 NOZZLE(WH)
1
1
1
2
E02 166 040 VANE(WH)
1
1
1
3
E02 141 702 DRAIN HOSE
1
1
1
4
E02 151 303 VANE MOTOR
MV
1
1
1
5
E02 151 300 INDOOR FAN MOTOR
MF
1
1
1
RC4V19 -
6
E02 151 505 RUBBER MOUNT
2
2
2
2PCS/SET
7
E02 151 302 LINE FLOW FAN
1
1
1
8
E02 151 509 BEARING MOUNT
9
E02 151 308 ROOM TEMPERATURE THERMISTOR
10 E02 151 307 INDOOR COIL THERMISTOR
11 E02 197 375 TERMINAL BLOCK
12
1
1
1
1
1
RT12
1
1
1
TB
1
1
1
1
1
1
1
1
F11
1
1
1
NR11
1
1
1
1
1
1
1
1
1
1
1
1
E02 202 450 ELECT CONTROL P.C.BOARD
E02 204 450 ELECT CONTROL P.C.BOARD
13 E02 152 395 POWER SUPPLY CORD
14 E02 127 382 FUSE
15 E02 085 385 VARISTOR
16 E02 001 504 SLEEVE BEARING
17 E02 151 468 RECEIVER
18 E02 199 520 FAN GUARD
54
1
RT11
1
3.15A
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Page 55
OUTDOOR UNIT
STRUCTURAL PARTS
MU-07NV - E1
MU-09NV - E1
MU-07NV - E2
MU-09NV - E2
2
5
10
1
8
9
3
11
4
7
6
Part number that are circled is not shown in the illustration.
Symbol
NO.
Part No.
Part Name
in Wiring
Diagram
Q'ty/unit
MU-07NV MU-07NV -
E1
E2
MU-09NV MU-09NV -
1
E02 096 232 CABINET
1
1
2
E02 085 297 TOP PANEL
1
1
3
E02 199 521 FAN GUARD
1
1
4
E02 085 245 SERVICE PANEL
1
1
5
E02 085 630 OUTDOOR HEAT EXCHANGER
1
1
6
E02 127 900 COMPRESSOR
MC
E02 164 900 COMPRESSOR
MC
1
E1
Remarks
E2
RH-145VGHT
RH-135VGHT
1
7
E02 047 506 COMPRESSOR RUBBER SET
3
3
8
E02 096 662 STOP VALVE(LIQUID)
1
1
{ 6.35
9
10 E02 085 515 MOTOR SUPPORT
11 E02 127 290 BASE
1
1
{ 9.52
1
1
1
1
12 E02 158 936 CAPILLARY TUBE
1
1
E02 096 661 STOP VALVE(GAS)
{3.0 ✕{1.6 ✕ 1200
55
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Page 56
OUTDOOR UNIT
FUNCTIONAL PARTS AND ELECTRICAL PARTS
MU-07NV - E1
MU-09NV - E1
MU-07NV - E2
MU-09NV - E2
4
1
5
2
3
Symbol
NO.
Part No.
Part Name
in Wiring
Diagram
Q'ty/unit
MU-07NVMU-09NV-
E1
E2
E1
E2
Remarks
1
1
E02 085 501 PROPELLER FAN
2
E02 085 301 OUTDOOR FAN MOTOR
MF
1
RA6V23-
3
E02 085 353 COMPRESSOR CAPACITOR
C1
1
25+/440VAC
4
E02 002 350 OUTDOOR FAN CAPACITOR
C2
1
1.5+/440VAC
5
E02 202 374 TERMINAL BLOCK
TB
1
56
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Page 57
OUTDOOR UNIT
STRUCTURAL PARTS
MU-12NV - E1
MU-12NV - E2
3
16
15
14
4
7
13
2
12
1
10
11
6
9
5
8
Part number that are circled is not shown in the illustration.
Symbol
NO.
Part No.
Part Name
in Wiring
Diagram
Q'ty/unit
MU-12NV-
E1
MU-12NV-
Remarks
E2
1
E02 141 521 GRILLE
1
1
2
E02 141 232 CABINET ASSEMBLY
1
1
3
E02 140 233 BACK PANEL
1
1
4
E02 141 245 SERVICE PANEL
1
1
5
E02 075 506 COMPRESSOR RUBBER SET
3
3
6
E02 140 515 MOTOR SUPPORT
1
1
7
E02 141 630 OUTDOOR HEAT EXCHANGER
1
1
8
E02 141 900 COMPRESSOR
1
1
9
E02 140 290 BASE
1
1
1
1
{ 6.35
1
1
{ 12.7
MC
10 E02 139 662 STOP VALVE(LOQUID)
11 E02 140 661 STOP VALVE(GAS)
RH-231VHAT
12 E02 141 501 PROPELLER FAN
13 E02 141 301 OUTDOOR FAN MOTOR
1
1
MF
1
1
RA6V40 -
14 E02 079 353 COMPRESSOR CAPACITOR
15 E02 204 374 TEAMINAL BLOCK
C1
1
1
30+/440VAC
TB
1
1
C2
1
1
3.0MFD/440VAC
1
1
{3.0✕{1.8✕800
16 E02 138 351 OUTDOOR FAN CAPACITOR
17 E02 140 936 CAPILLARY TUBE
57
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Page 58
INDOOR UNIT
STRUCTURAL PARTS
MS-18NV - E1 (WH)
MS-24NV - E1 (WH)
MS-18NV - E2 (WH)
MS-24NV - E2 (WH)
MS-18NV - E3 (WH)
1
5
3
Optional parts
(See page 62.)
6
2
6
6
4
Part number that are circled is not shown in the illustration.
Symbol
NO.
Part No.
Part Name
Q'ty/unit
in Wiring MS-18NV- E1
(WH)
Diagram
E2 E3
MS-24NV- E1
(WH)
1
E02 138 000 FRONT PANEL (WH)
1
1
2
E02 138 010 GRILLE (WH)
1
1
3
E02 143 234 BOX (WH)
1
1
4
E02 141 100 AIR FILTER
2
2
5
E02 141 970 INSTALLATION PLATE
1
1
6
E02 143 067 SCREW CAP (WH)
3
3
E02 171 007 LAMP PANEL (WH)
1
7
E02 176 007 LAMP PANEL (WH)
E2
Remarks
1PC/SET
3PCS/SET
1
INDOOR UNIT
HEAT EXCHANGER PARTS
MS-18NV - E1 (WH)
MS-24NV - E1 (WH)
1
MS-18NV - E2 (WH)
MS-24NV - E2 (WH)
MS-18NV - E3 (WH)
2
3
Symbol
NO.
1
2
3
58
Part No.
Part Name
Q'ty/unit
in Wiring MS-18NV - E1
(WH)
Diagram
E02 141 620 INDOOR HEAT EXCHANGER
1
E02 138 667 UNION(LIQUID)
1
E02 176 667 UNION(LIQUID)
E02 138 666 UNION(GAS)
1
E2 E3
MS-24NV (WH)
E1
E2
Remarks
1
{6.35
1
{9.52
1
{15.88
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Page 59
INDOOR UNIT
ELECTRICAL PARTS
MS-18NV - E1 (WH)
MS-24NV - E1 (WH)
MS-18NV - E2 (WH)
MS-24NV - E2 (WH)
MS-18NV - E3 (WH)
10
11
5
15
7
8
4
5
3
1
16
12
2
17
9
6
Part number that are circled is not shown in the illustration.
Symbol
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Part No.
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
143
143
141
141
213
001
138
147
320
138
213
197
141
141
138
141
138
209
197
085
141
001
138
138
127
138
235
040
702
300
300
505
395
395
395
450
450
450
302
303
329
509
375
375
375
385
468
504
307
308
382
520
Part Name
NOZZLE (WH)
VANE (WH)
DRAIN HOSE
INDOOR FAN MOTOR
INDOOR FAN MOTOR
RUBBER MOUNT
POWER SUPPLY CORD
POWER SUPPLY CORD
POWER SUPPLY CORD
ELECT CONTROL P.C. BOARD
ELECT CONTROL P.C. BOARD
ELECT CONTROL P.C. BOARD
LINE FLOW FAN
VANE MOTOR
DISPLAY P.C. BOARD
BEARING MOUNT
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
VARISTOR
RECEIVER P. C. BOARD
SLEEVE BEARING
INDOOR COIL THERMISTOR
ROOM TEMPERATURE THERMISTOR
FUSE
FAN GUARD
14
Q'ty/unit
in Wiring MS-18NV Diagram
(WH)
1
1
1
1
MF
E1
MS-18NV-
MS-24NV -
E1
MS-24NV -
(WH)
(WH)
1
1
1
1
1
1
1
1
1
1
1
2
1
2
MF
2
1
E2 E3
(WH)
2
1
E2
Remarks
RA4V27 -EA
RA4V27 -EC
2PCS/SET
1
1
1
MV
TB
TB
TB
NR11
RT12
RT11
F11
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3.15A
59
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17
OUTDOOR UNIT
STRUCTURAL PARTS
MU-18NV - E1
MU-24NV - E1
MU-18NV - E2
MU-24NV - E2
1
MU-18NV - E3
11
12
10
4
8
3
2
15
16
9
7
5
6
14
Part number that are circled is not shown in the illustration.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
Part No.
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
E02
141
141
141
138
147
138
139
138
042
138
176
144
147
141
144
082
138
141
197
209
138
176
138
139
176
150
140
010
229
288
232
521
245
630
630
515
515
900
900
290
290
301
301
501
353
353
351
374
374
374
936
936
506
662
662
661
233
342
381
343
Part Name
CABINET
GRILLE
SERVICE PANEL
OUTDOOR HEAT EXCHANGER
OUTDOOR HEAT EXCHANGER
MOTOR SUPPORT
MOTOR SUPPORT
COMPRESSOR
COMPRESSOR
BASE
BASE
OUTDOOR FAN MOTOR
OUTDOOR FAN MOTOR
PROPELLER FAN
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
CAPILLARY TUBE
CAPILLARY TUBE
COMPRESSOR RUBBER SET
STOP VALVE(LIQUID)
STOP VALVE(LIQUID)
STOP VALVE(GAS)
BACK PANEL
COMPRESSOR CONTACTOR
THERMAL REED SWITCH
FAN MOTOR RELAY
Symbol
in Wiring
Diagram
MC
MC
MF
MF
C1
C1
C2
TB
TB
TB
Q'ty/unit
MU-18NV
- E1
MU-18NV
- E2 E3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MU-24NV
- E2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
4
1
1
1
1
1
1
1
1
1
1
Remarks
NH-33VMDT
NH-47VMDT
RA6V50 RA6V60 45+/440V
50+/440V
3.0+/440V
1
1
1
4
1
4
1
1
1
52C
1
1
MU-24NV
- E1
1
1
1
1
1
{3.0✕{2.0✕700
{3.0✕{1.6✕350
{ 6.35
{ 9.52
{15.88
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ACCESSORY AND REMOTE CONTROLLER PARTS
MS-07NV - E1 (WH)
MS-09NV - E1 (WH)
MS-12NV - E1 (WH)
2
MS-18NV - E1 (WH)
MS-24NV - E1 (WH)
MS-07NV - E2 (WH)
MS-09NV - E2 (WH)
MS-12NV - E2 (WH)
MS-18NV - E2 (WH)
MS-24NV - E2 (WH)
MS-18NV - E3 (WH)
Symbol
Part No.
NO.
1
Q'ty/unit
in Wiring MS-07/09/12/18/24NVDiagram MS-07/09/12/18/24NV-
Part Name
E1
E2
1
E02 138 426 REMOTE CONTROLLER
1
2
E02 141 083 REMOTE CONTROLLER HOLDER
1
13
MS-18NV (WH)
E3
Remarks
OPTIONAL PARTS
1. REFRIGERANT PIPES
The air conditioner has flared connections its indoor and outdoor sides.
Please use the optional extension pipe as follows.
Model
MS-07NVMS-09NVMS-07NVMS-09NV-
E1
MS-12NVMS-12NV-
E1
MS-18NVMS-18NVMS-18NV-
E1
MS-24NVMS-24NV-
E1
E2
E2
E2
E2
E3
E1
E2
Part No.
Pipe length
MAC-440PI
MAC-441PI
MAC-442PI
MAC-443PI
MAC-660PI
MAC-661PI
MAC-662PI
MAC-663PI
MAC-664PI
MAC-670PI
MAC-671PI
MAC-672PI
MAC-673PI
MAC-674PI
MAC-860PIE
MAC-861PIE
MAC-862PIE
MAC-863PIE
MAC-864PIE
3m
5m
7m
10m
3m
5m
7m
10m
15m
3m
5m
7m
10m
15m
3m
5m
7m
10m
15m
Cross-section
Pipe size O.D mm (in.)
A-Gas
B-Liquid
Insulation
C
D
27
9.52 (3/8)
21
Additional
refrigerant
charge
R-22 (g)
0
45
0
12.7 (1/2)
6.35 (1/4)
45
120
31
27
0
45
120
15.88 (5/8)
0
9.52 (3/8)
45
120
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2. AIR CLEANING FILTER
● 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
MS-07NV -
E1
E2
, MS-09NV -
MS-18NV -
E1
E2
E3
E1
, MS-24NV -
E2
E1
, MS-12NV -
E1
E2
MAC-1000FT
MAC-1100FT
E2
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
MS-07NV -
E1
E2
, MS-09NV -
MS-18NV -
E1
E2
E3
E1
, MS-24NV -
E2
E1
, MS-12NV E2
E1
E2
MAC-1500DF
MAC-1600DF
● DEODORIZING FILTER and AIR CLEANING FILTER can be attached on either side.
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HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100 TELEX J24532 CABLE MELCO TOKYO
C Copyright 1997 MITSUBISHI ELECTRIC ENGINIEERING CO.,LTD
Issued in Sep. 1997. No.OB206 646
Printed in Japan
New publication, effective Sep. 1997
Specifications subject to change without notice.