Mitsubishi Electric MUX-19TV - E1 User manual

SERVICE MANUAL
SPLIT-TYPE,AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························3
4. SPECIFICATION·················································3
5. NOISE CRITERIA CURVES······························ 6
6. OUTLINES AND DIMENSIONS ························ 7
7. WIRING DIAGRAM ············································9
8. REFRIGERANT SYSTEM DIAGRAM··············10
9. PERFORMANCE CURVES······························14
10. TROUBLESHOOTING······································26
11. DISASSEMBLY INSTRUCTIONS·····················32
12. PARTS LIST······················································35
13. OPTIONAL PARTS···········································37
Multi system type
Models
MUX-19TV -
MUX-20TV -
MUX-25TV - E1
E1
E1
No. OB284
MUX-19TV -
MUX-20TV -
MUX-25TV - E1
E1
E1
This manual describes technical data of outdoor unit.
For indoor unit refer to the service manuals No.OB227 REVISED EDITION-B and OB252 REVISED EDITION-A of corre-
sponding models.
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2
TECHNICAL CHANGES
1
MUX-19TV -
MUX-20TV -
MUX-25TV -
New models
E1
E1
E1
PART NAMES AND FUNCTIONS
2
OUTDOOR UNIT
MUX-19TV -
MUX-20TV -
MUX-25TV - E1
E1
E1
Air inlet
Piping
Drainage hose
Air outlet
(Back and side)
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3
INDOOR / OUTDOOR CORRESPONDENCE TABLE
3
SPECIFICATION
4
❈There is no combination other than this table.
MUX-19TV- E1 MUX-20TV- E1 MUX-25TV- E1
Combination of the
connectable indoor units
OUTDOOR UNIT
A:07, B:12 A:09, B:09, C:09 A:12, B:12
Outdoor model
Capacity
Dehumidification
Outdoor air flow
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity(R22)
Refrigerating oil (Model)

kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"


"
mm
kg
dB
rpm
kg
cc
Opetate 1 unit
A
3.5
1.6
6.01
1,280
92.6
5.68
0.33
2.65
Opetate 2 unit
A+B
3.5+2.2
1.6+0.8
8.94
2,005
97.5
8.37
0.57
2.74
MUX-19TV - E1
Single phase
230V, 50Hz
Opetate 1 unit
B
2.2
0.8
Hi:2,460 / Lo:1,920
15
3.33
745
—
97.3
45.6
3.00
0.33
2.82
RH220VHAT (Room A) / RH135VHAT (Room B)
1,050 / 650
C-R 2.13/4.18
C-S 3.91/5.76
RA6V60-DA
WHT-BLK 90 BKL-YLW 54
BLK-RED 146
840✕640✕330
63
52
High:730 / Low:580
2
Room A : 0.87
Room B :1.0
520(MS56) / 300(MS56)
Compressor
Electrical data
Fan motor
Special remarks
Capacity
Coefficient of performance(C.O.P)
Outdoor unit power supply
Indoor unit No.
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB(24°C)
OB284-1.qxp 01.4.26 8:59 PM Page 3

4
Outdoor model
Capacity
Dehumidification
Outdoor air flow
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity(R22)
Refrigerating oil (Model)

kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"


"
mm
kg
dB
rpm
kg
cc
Opetate 1 unit
A
2.5
1.1
3.43
775
98.2
3.10
0.33
3.09
Opetate 1 unit
B or C
2.7
1.2
4.23
965
99.2
3.90
0.33
2.70
Opetate 2 unit
A+B or A+C
2.4+2.7
0.9+1.2
7.56
1,740
99.9
6.99
0.57
2.82
Opetate 3 unit
A+B+C
2.4+1.75✕2
0.9+0.3✕2
7.79
1,785
99.6
7.22
0.57
3.12
MUX-20TV - E1
Single phase
230V, 50Hz
Opetate 2 unit
B+C
1.75✕2
0.3✕2
High: 2,460 / Low: 1,920
15
4.36
1,000
—
99.7
40
4.03
0.33
3.27
RH140VHAT (Room A) / RH174VHAT (Room B,C)
700/800
C-R 4.03/3.30
C-S 5.71/5.80
RA6V60-DA
WHT-BLK 90 BLK-YLW 54
BLK-RED 146
840✕640✕330
62
52
High: 730 / Low: 580
2
Room A : 0.8
Room B,C : 0.96
300(MS56) / 300(MS56)
Compressor
Electrical data
Fan motor
Special remarks
Capacity
Coefficient of performance(C.O.P)
Outdoor unit power supply
Indoor unit No.
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB(24°C)
OB284-1.qxp 01.4.26 8:59 PM Page 4

5
Outdoor model
Capacity
Dehumidification
Outdoor air flow
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity(R22)
Refrigerating oil (Model)

kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"


"
mm
kg
dB
rpm
kg
cc
Opetate 1 unit
A or B
3.5
1.6
6.11
1,350
96.1
5.79
0.32
2.52
Opetate 2 unit
A+B
3.5✕2
1.6✕2
12.42
2,760
96.6
11.81
0.61
2.46
MUX-25TV - E1
Single phase
230V, 50Hz
High:2,760 / Low:1,920
25
—
56
RH231VHAT✕2
1,100✕2
C-R 2.13
C-S 3.91
RA6V60-EA
WHT-BLK 67 BLK-YLW 75
BLK-RED 73
840✕640✕330
65
54
High: 810 / Low: 580
2
Room A: 0.9
Room B: 0.9
520(MS56) / 520(MS56)
Compressor
Electrical data
Fan motor
Special remarks
Capacity
Coefficient of performance(C.O.P)
Outdoor unit power supply
Indoor unit No.
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB(24°C)
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6
NOISE CRITERIA CURVES5
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling :DB35: WB24:
High
SPEED
52
SPL(dB(A)) LINE
MUX-19TV - E1
MUX-20TV - E1
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling :DB35: WB24:
High
SPEED
54
SPL(dB(A)) LINE
MUX-25TV - E1
OB284-1.qxp 01.4.26 8:59 PM Page 6

7
OUTLINES AND DIMENSIONS
6
MUX-19TV- E1
OUTDOOR UNIT
500
840 61.7
264.2
10°
10°
Service panel
Open as a rule
500mm or more if
the front and both
sides are open
100mm or more
200mm or more if
there are obstacles
to both sides
Open as a rule
500mm or more if the back,
both sides and top are open 350mm or more
100mm or more
B UNIT
A UNIT
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {12.7
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) {6.35
66.2
80.7
121.3
40
438.4
Air in
Air out
Air in
272.9
100.3
125.6
319.8 34
330
640
360.6
75.8
505050
Drainage
3hoies {33
}
}
Unit: mm
MUX-20TV- E1
OUTDOOR UNIT
500
840 61.7
264.2
10°
10°
Service panel
Open as a rule
500mm or more if
the front and both
sides are open
100mm or more
200mm or more if
there are obstacles
to both sides
Open as a rule
500mm or more if the back,
both sides and top are open 350mm or more
100mm or more
B UNIT
A UNIT
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {9.52
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) {6.35
66.2
121.3
40
438.4
Air in
Air out
Air in
272.9
100.3
125.6
319.8 34
330
640
360.6
75.8
5050505050
Drainage
3hoies {33
}
C UNIT
}
}
Unit: mm
OB284-1.qxp 01.4.26 8:59 PM Page 7

8
MUX-25TV- E1
OUTDOOR UNIT
500
840 61.7
264.2
10°
10°
Service panel
Open as a rule
500mm or more if
the front and both
sides are open
100mm or more
200mm or more if
there are obstacles
to both sides
Open as a rule
500mm or more if the back,
both sides and top are open 350mm or more
100mm or more
B UNIT
A UNIT
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) {12.7
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) {6.35
80.7
121.3
40
438.4
Air in
Air out
Air in
272.9
100.3
125.6
319.8 34
330
640
360.6
75.8
505050
Drainage
3hoies {33
}
}
Unit: mm
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9
WIRING DIAGRAM
7
OUTDOOR UNIT
MUX-19TV - MUX-25TV - E1E1 MODELS WIRING DIAGRAM
OUTDOOR UNIT
MUX-20TV - E1 MODEL WIRING DIAGRAM
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
VG79B082H01
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
VG79B081H01
1
2
3
123
2
1
3
(3.15A)
RED RED
NR61 T61
1
2
43 43
C61
LD1
WHT
WHT
OUTDOOR CONTROL PC BOARD
BRN
BLU
BRN
BLU
BRN
X522 X521
BLK
SR862
SR861
LD2
RED BLK
YLW
WHT
652341
BRN
BLU
BLU
TB4
CN91
CN90
TB2
X521X522
F61
CN73 CN71
TO INDOOR
UNIT B
CONNECTING
12V
PE
CIRCUIT BREAKER
GRN/YLW
ORN
BLU
YLW
BLU RED
RED
TO INDOOR
UNIT A
CONNECTING
12V
1
2
C2
C1
RC
S
CR
S
MC2
MF61
MC1
BLK
TB1
POWER SUPPLY
~/N
230V
50Hz
1
2
L
N
SYMBOL
C1
C2
C61
F61
MC1
SYMBOL
MC2
MF61
NR61
SR861
SR862
SYMBOL
TB1
TB2~TB4
T61
X521
X522
NAME
COMPRESSOR CAPACITOR (MC1)
COMPRESSOR CAPACITOR (MC2)
FAN MOTOR CAPACITOR
FUSE (3.15A)
COMPRESSOR (INNER PROTECTOR)
NAME
COMPRESSOR (INNER PROTECTOR)
FAN MOTOR (INNER PROTECTOR)
SURGE ABSORBER
FAN MOTOR RELAY
FAN MOTOR RELAY
NAME
TERMINAL BLOCK
TERMINAL BLOCK
TRANSFORMER
COMPRESSOR CONTACTOR (MC1)
COMPRESSOR CONTACTOR (MC2)
1
2
3
1
2
3
123
2
1
3
(3.15A)
123123123
RED RED
21R421R3
NR61 T61
1
2
43 43
C61
LD1
WHT
WHT
OUTDOOR CONTROL PC BOARD
BRN
BLU
BRN
BLU
BRN
BLU BLU
X522 X521
BLK
SR865
SR866
SR863
SR862
SR861
LD2
RED BLK YLW
WHT
652341
BRN
BLU
BLU
TB4
CN86
CN85
CN81
CN91
CN90
TB3
TB2
X521
BLU BLU
X522
BLU BLU
21RB
F61
CN74 CN73 CN71
TO INDOOR
UNIT B
CONNECTING
12V
PE
CIRCUIT BREAKER
GRN/YLW
WHT
BLU
ORN
BLU
YLW
BLU RED
RED
TO INDOOR
UNIT A
CONNECTING
12V
1
2
1
2
C2
C1
RC
S
CR
S
MC2
TO INDOOR
UNIT C
CONNECTING
12V
MF61
MC1
BLK
TB1
POWER SUPPLY
~/N
230V
50Hz
1
2
L
N
SYMBOL
C1
C2
C61
F61
MC1
MC2
MF61
SYMBOL
NR61
SR861
SR862
SR863
SR865
SR866
TB1
SYMBOL
TB2~TB4
T61
X521
X522
21RB
21R3
21R4
NAME
COMPRESSOR CAPACITOR (MC1)
COMPRESSOR CAPACITOR (MC2)
FAN MOTOR CAPACITOR
FUSE (3.15A)
COMPRESSOR (INNER PROTECTOR)
COMPRESSOR (INNER PROTECTOR)
FAN MOTOR (INNER PROTECTOR)
NAME
SURGE ABSORBER
FAN MOTOR RELAY
FAN MOTOR RELAY
RELAY (21RB)
RELAY (C) (21R4)
RELAY (B) (21R3)
TERMINAL BLOCK
NAME
TERMINAL BLOCK
TRANSFORMER
COMPRESSOR CONTACTOR (MC1)
COMPRESSOR CONTACTOR (MC2)
SOLENOID COIL
SOLENOID COIL (B)
SOLENOID COIL (C)
OB284-1.qxp 01.4.26 8:59 PM Page 9

REFRIGERANT SYSTEM DIAGRAM
10
8
Outside diameter Insulation
UNIT No. Pipe mm thickness Insulation material
and UNIT For liquid 6.35 8 mm Heat resisting foam plastic
UNIT For gas 9.52 8 mm 0.045 specific gravity
UNIT For gas 12.7 8 mm
A
B
BA
MSC-07RV
Indoor unit B
E3
MUX-19TV
Outdoor unit
Additional piping max. length 15m
E1
MSC-12RV
Indoor unit A
E3
LLHH
OUTDOOR UNIT
INDOOR UNIT
UNIT A
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
Outdoor
heat
exchanger
(With insulation)
Refrigerant pipe
{12.7
{9.52
(With insulation)
Refrigerant pipe
{6.35
Flared connection
Stop valve
with service port
Stop valve
Capillary tube
{ 3.0 ✕ { 1.6 ✕ 660
Compressor(MC1)
MSC-12RV
E3
UNIT B
Indoor
heat
exchanger
Indoor coil
thermistor
RT12
Room
temperature
thermistor
RT11
(With insulation)
Refrigerant pipe
(With insulation)
Refrigerant pipe
{6.35
Flared connection
Stop valve
with service port
Stop valve
Capillary tube
{ 3.0 ✕ { 1.4 ✕ 810
Compressor(MC2)
MSC-07RV
E3
MSC-07RV-
MSC-12RV- E3
E3
MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
ADDITIONAL REFRIGERANT CHARGE (R22:g)
PIPING PREPARATION
1Table below shows the specifications of pipes commercially available.
MUX-19TV- E1
2Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
3Refrigerant bending radius must be 10cm or more.
0 153045607590105120
7m Refrigerant piping length (one way)
AUNIT
BUNIT
Outdoor unit
precharged (g)
870 8m 9m 10m 11m 12m 13m 14m 15m
1,000
Unit: mm
Max. limits
UNIT No.
, BA
Pipe length
15m
LHeight difference (H)
10m
No. of bends
10
OB284-1.qxp 01.4.26 8:59 PM Page 10