Mitsubishi MSH-C18TV-E1, MSH-C24TV-E1, MUH-C18TV-E1, MUH-C24TV-E1 Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

HFC

utilized

R407C

SERVICE MANUAL

Wireless type
Model

No. OB279

MSH-C18TV ­MSH-C24TV -

MSH-C18TV ­MSH-C24TV -

E1
E1

(WH)

(WH)

CONTENTS

10. SERVICE FUNCTIONS·····································33

11. TROUBLESHOOTING ······································35

12. DISASSEMBLY INSTRUCTIONS·····················47

13. PARTS LIST······················································53

14. OPTIONAL PARTS···········································58

· MUH-C18TV -

· MUH-C24TV -

1. TECHNICAL CHANGES····································2

2. PART NAMES AND FUNCTIONS······················5

3. SPECIFICATION·················································7

4. NOISE CRITERIA CURVES·······························8

5. OUTLINES AND DIMENSIONS························ 9

6. WIRING DIAGRAM···········································11

7. REFRIGERANT SYSTEM DIAGRAM··············13

8. PERFORMANCE CURVES······························15

9. MICROPROCESSOR CONTROL ····················23

E1E1

E1E1

1

TECHNICAL CHANGES

MSH-C18SV - ➔MSH-C18TV -

1. Rated voltage has changed to 230V.

2. Remote controller has changed.

• SLEEP MODE function has been removed.

• ECONO COOL operation has added.

• SWING button has been removed, but SWING MODE function has available by VANE CONTROLbutton.

3. Indoor electronic control P.C. board has changed.

MSH-C24TV -

New model

E1

MUH-C18SV - ➔MUH-C18TV -

1. Path of heat exchanger has changed.

2. Temperature of defrosting control has changed. (-3: ➜ -2.7:)

3. Capillary tube has changed.
[{3.0 o {1.6 o 750 (2pcs) ➜ {3.0 o {1.4 o 600 (2pcs), {3.0 o {2.0 o 500 ➜ {3.0 o {2.0 o 850, {3.0 o {2.0 o 350 has
removed.]

4. Refrigerant filling capacity has changed. (1.70kg ➜ 1.60kg)

MUH-C24TV -

New model

E1

E1E1

E1E1

2

INFORMATION FOR THE AIR CONDITIONER WITH R-407C REFRIGERANT

New Specification Previous Specification

The incompatible lubricant easily separates from refrigerant
and makes the layer in the upper inside the suction muffler.
The higher position of the returning oil hole enables to return
the lubricant of the upper layer to the compressor.

Since refrigerant and lubricant are compatible each other,
lubricant returns to the compressor through the lower
position returning oil hole.

Compressor

Suction muffler

Returning oil hole

Lubricant

Refrigerant

Compressor

Suction muffler

Returning oil hole

Lubricant and Refrigerant

Compressor

-30 -20 -10 0 10 20

30

40 50 60

-0.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

(MPa[Gauge])

R407C
R22

Conversion chart of refrigerant temperature and pressure

Saturated liquid pressure

(:)

This room air conditioner adopts HFC refrigerant (R407C) which will never destroy the ozone layer.
Pay attention to following points.

1 Take sufficient care not to allow water and other contaminations to enter the R407C refrigerant during storage and

installation, since it is more susceptible to contaminations than HCFC (R22) refrigerant.

2 Clean refrigerant pipings should be used.
3 Composition change may occur in R407C since it is a mixed refrigerant. When charging, charge liquid refrigerant to

prevent composition change.

4 Be especially careful when managing the tools.

If dust, dirt, or water mixes in the refrigerant cycle, it may cause decrease of performance.

Refrigerant
Composition (Ratio)

R32: R125: R134a (23%:25%:52%)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point (:)
Steam pressure [25:](Mpa [Gauge])
Saturated steam density [25:](Kg/K)

Refrigerant

Combustibility
ODP w1
GWP w2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell

Lubricant

w1:Ozone Destruction Parameter : based on CFC11
w2 :Global Warmth Parameter : based on CO

2

New refrigerant

R407C

Non-azeotropic refrigerant

Not included

A1/A1

86.2

-43.6

0.9177

42.5

Non combustible

0

1530

From liquid phase in cylinder

Impossible

Incompatible oil

Non
Non

Previous refrigerant

R22

HCFC22 (100%)

Single refrigerant

Included

A1

86.5

-40.8

0.94

44.4

Non combustible

0.055
1700

Gas phase

Possible

Compatible oil

Light yellow

Non

NOTE : The unit of pressure has been changed to MPa on the

international system of units(SI unit system).

The conversion factor is: 1(MPa[Gauge]) =10.2(kgf/

3

ff

[Gauge])

1.Tools dedicated for the air conditioner with R407C refrigerant

R407C tools Can R22 tools be used?

Gas leak detector

A gauge manifold with a sight glass is recommended for charging the
liquid refregerant.

Hose material have been changed to improve the pressure
resistance.

Dedicated for HFC refrigerant.

Description

Provided to prevent the back flow of oil. This adapter enables you to use
existing vacuum pumps.

No

No

No

Yes
Yes

New

New

Gauge manifold

Charge hose

Torque wrench
Flare tool

Vacuum pump
adapter

Electronic scale for
refrigerant charging

Use the electronic control scale for measuring the R407C.

Electronic scale for
refrigerant charging

Refrigerant
gas cylinder
operating
valve

Refrigerant gas cylinder
for R407C with siphon

Refrigerant (liquid)

Gage manifold

Outdoor unit

Indoor unit

Union

Liquid pipe
Gas pipe

Service port

Stop valve

Charge hose

The following tools are required for R407C refrigerant. Some R22 tools can be substituted for R407C tools.
Do not use tools that are used with R22 refrigerant in order to avoid mixing oils.

2.Refrigerant piping

Do not use copper pipes which are broken, deformed or discoloured.
In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulfur and oxides, or have no dust/ dirt,
shaving particles, oil, moisture or any other contamination.

•If there is a large amount of residual oil inside the piping and joints, deterioration of the refrigerant oil will result.

3.Refrigerant oil

Apply the specific refrigeration oil (accessories) to the flare and the union seat surfaces.

4.Air purge

Use the vacuum pump for air purge to protect environments, and to avoid changing the composition of refrigerant.

5.Additional charge

For additional charging, charge the refrigerant with liquid phase slowly using a gas cylinder. If the refrigerant is charged with
gas phase, the composition of refrigerant will change. In this case, ability of the refrigerating cycle decreases or normal
operation can be impossible.
If liquid refrigerant is rapidly charged at once, the compressor may be locked.

NOTE: 1. The R407C is mixed refrigerant which consist of three different kinds of evaporative temperature. As a result, the

R407C occurs the change of composition.

2. Additional refrigerant charge has been changed by change of refrigerant.(R22 ➔ R407C)
R22 : <MUH-18 type> 50g/m ➔ R407C : <MUH-C18TV> 35g/m

: <MUH-24 type> 65g/m ➔ R407C : <MUH-C24TV> 45g/m

4

2

1
2
3
4
5
6
7

Installation plate
Installation plate fixing screw 4 o 25 mm
Remote controller mouting hardware
Fixing screw for 3 o 3.5 o 1.6 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)

1
6
1
2
2
1
1

MSH-C18TV­MSH-C24TV-

E1
E1

8

9

Drain socket
Drain cap {33
Drain cap {16

1
6

—

1
2
1

MUH-C18TV-

E1

MUH-C24TV-

E1

PART NAMES AND FUNCTIONS

INDOOR UNIT

MSH-C18TV ­MSH-C24TV -

(When the grille is open)

E1

E1

Front panel

OUTDOOR UNIT

MUH-C18TV -

ACCESSORIES

Indoor unit

E1

Air inlet

(back and side)

Piping

Drainage hose

Air outlet

Drain outlet

MUH-C24TV -

Air inlet

E1

Air outlet

Outdoor unit

5

REMOTE CONTROLLER

ON/OFF

TOO

COOL

PM

AM

TOO

WARM

ON/OFF

FAN

TOO

WARM

TOO

COOL

VANE

MODE

ECONO COOL

STOP

START

HR.

MIN.

I FEEL

COOL

HEAT

DRY

PM

CLOCK

AM

RESET CLOCK

Open the front lid.

Signal transmitting section

Operation display section

OPERATE /STOP

(ON /OFF)button

TEMPERATURE buttons

OPERATION SELECT button

FAN SPEED CONTROL button

OFF-TIMER button

HR. button

MIN. button

(TIME SET button)

ON-TIMER button

RESET button

ECONO COOL button

VANE CONTROL button

CLOCK SET button

MSH-C18TV ­MSH-C24TV -

E1

E1

6

3

Indoor model

Function

Power supply

Capacity
Dehumidification
Air flow(High)
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Fan motor current

Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level (High)
Fan speed (High)
Fan speed regulator
Thermistor RT11(at25:)
Thermistor RT12(at25:)
Outdoor model
Air flow
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level
Fan speed (High)
Fan speed regulator
Refrigerant filling
capacity(R407C)
Refrigerating oil (Model)
Thermistor

RT61(at0:)

Thermistor

RT63(at0:)

kW

r/h

K /h

A
A

W

A(kW)

%

A
A

"

mm

kg

dB

rpm

k"
k"

K /h

A
A

W

"

"

mm

kg

dB

rpm

kg

cc
k"
k"

MSH-C18TV -

E1

Single phase

230V, 50Hz

756

15

—
98
55

0.25

RA4V27-EF
WHT-BLK 183.8
BLK-RED 250.5
1,015O320O190

14

5

42

1,180

3
10
10

MUH-C18TV -

E1

2,196

0.39

PE-36VPEHT

1,600
C-R 1.06
C-S 2.03

RA6V50-OG

WHT-BLK 116.4

BLK-RED 111.0

850o605o290

54
52

828

1

1.60

1,100 (NEO22)

33.18
—

Cooling

5.2

2.4

9.4

2,110

2.46

8.76

Heating

6.0
—

9.7

2,180

2.75

9.06

MSH-C24TV -

E1

Single phase

230V, 50Hz

816

25

—

83

0.29

RA4V27-EE
WHT-BLK 183.3
BLK-RED 250.5
1,015O320O190

14

5

45

1,260

3
10
10

MUH-C24TV -

E1

2,700

0.58

NE-47VMHHT

2,200
C-R 0.67
C-S 2.02

RA6V85-AA

WHT-BLK 62.7 BLK-YLW 30.2

YLW-RED 62.9

870o850o295

71
53

735

2

2.00

1,400 (NEO22)

33.18

33.18

Cooling

6.3

3.0

12.8

2,850

97

2.21

11.93

Heating

7.5
—

13.7

3,020

96

2.48

12.87

Electrical

data

Fan

motor

Special

remarks

Compressor

Electrical

data

Fan

motor

Special

remarks

Capacity

Coefficient of performance(C.O.P)

Capacity

SPECIFICATION

NOTE:Test conditions are based on JIS C 9612.

Cooling : Indoor Dry-bulb temperature 27°C / Wet-bulb temperature 19°C

Outdoor Dry-bulb temperature 35°C / Wet-bulb temperature (24°C)

Heating : Indoor Dry-bulb temperature 20°C / Wet-bulb temperature

Outdoor Dry-bulb temperature 7°C / Wet-bulb temperature 6°C

7

4

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

42

SPL(dB(A)) LINE

High

NOTCH

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

45

SPL(dB(A)) LINE

High

NOTCH

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:

NOISE CRITERIA CURVES

MSH-C18TV-

E1

MSH-C24TV-

E1

MUH-C18TV-

Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:

Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:

90

80

E1

NOTCH

High

SPL(dB(A)) LINE

52

70

60

50

40

30

APPROXIMATE

20

THRESHOLD OF

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

HEARING FOR
CONTINUOUS
NOISE

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

MUH-C24TV-

Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:

Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

8

E1

NOTCH

SPL(dB(A)) LINE

High

90

80

70

60

50

40

30

APPROXIMATE

20

THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

53

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

5

OUTLINES AND DIMENSIONS

MSH-C18TV ­MSH-C24TV -

INDOOR UNIT

Unit: mm

E1

E1

995

60

40

4holes 11✕20

150 648 217

Indoor unit

20

320

Wireless remote controller

MUH-C18TV -

OUTDOOR UNIT

Drainage
hole [16.2

35

90

248

Air in

58

162

E1

355

350

1015

Air in

20

19

19077550

Power supply cord
Lead to right 2m
Lead to left 1m

290

Installation plate

Air in

Air out

310

345

450
450

5190

100mm or more

352438

Installation plate

Liquid line [8-0.5m
Gas line [12-0.43m

{

Insulation [50 O.D

[28 I.D

Drain hose [16
Insulation [28

100mm or more

500mm or more

254

3 297

Wall hole [75

100mm or more

350mm or more

605

Drainage
3holes [33

292

20

Air out

183

500
850

50

74

157

30

100

Service panel

Liquid refrigerant
pipe joint

Refregerant pipe
(flared) [6.35

35-

30-

Gas refregerant
pipe joint

161

9

Refregerant pipe
(flared) [15.88

100 10

1000For 10 units or less

200

Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)

The upper side must be open.

Outdoor Unit-Necessary surrounding clearance

200

10

10

10

Note:Allow adequate
upper clearance

150

500

500

Service space

Front opening

R20

R20

25 max.

Standard bolt length

65

Front right piping holes­detail figures

80

17

12

R6

23

33

Side air intake

724295

Outlet guide
installation hole

302

Air intake

Air intake

Air outlet

870

185 185

500

330

362

1715

39.5 27.5

Terminal block for indoor and outdoor unit connection

Handle for moving

179 524

441

445

450

468

553

850

40 60524

Service panel

Refrigerant-pipe flared
connection [15.88

Refrigerant-pipe flared
connection [9.52

Knock out hole
for front piping

(refrigerant,drainage
and wiring)

42

45

104

33

Bottom
piping hole

2-U-shaped
notched
holes

Drainage hole [33

Drainage hole [33

2-12o23 Oval holes
(standard bolt M10)

Handle for moving

A

Handle
for moving

138

95

Rear piping hole

Rear fresh
air intake

A

Knock out hole
for right piping

(refrigerant,drainage
and wiring)

60

120

4553

Knock out holes for
power line 2-[27

MUH-C24TV-

E1

OUTDOOR UNIT

Unit: mm

10

6

WIRING DIAGRAM

MSH-C18TV -

INDOOR UNIT

TO OUTDOOR
UNIT
CONNECTING

POWER SUPPLY
CORD
~/N 230V
50Hz

PE

CIRCUIT BREAKER

SYMBOL

C11

DSAR

F11
F12

HIC1

NOTES:

INDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE (3.15A)
THERMAL FUSE (93:)
DC/DC CONVERTER

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

MUH-C18TV -

E1

MODEL WIRING DIAGRAM

TB

L

BRN

3

N

2

NAME

BRN

BLU

BLU

WHT

BRN

DSAR

GRN/YLW

RED

F12

BLU
BLU

GRN/YLW

SYMBOL

12V

230V~

IC141

MF
MV

NR11

RT11

: Connector

E1

MODEL WIRING DIAGRAM

HIC1

4

52C

3

TRANS

F11

ELECTRONIC CONTROL P.C. BOARD

REMOTE
CONTROLLER

SYMBOL

RT12

2

BLU

1

LD1

CN

102

3

DISPLAY
P.C. BOARD

HYBRID IC

CN

151

MV

CN201

5

NAME

3
1

CN

101

3

RECEIVER
P.C. BOARD

INDOOR FAN MOTOR (INNER FUSE)
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR

TB

52C

IC141

NR11

C11

CN

112

CN

121

CN211

4
2
1

CN

111

3

RT12

BRN
YLW
GRY
WHT
RED
BLK

RT11

NAME
INDOOR COIL THERMISTOR
TERMINAL BLOCK
CONTACTOR

VG79B068H01

MF

OUTDOOR UNIT

12V

230V~

FROM INDOOR UNIT

CONNECTING

SYMBOL

C1

COMPRESSOR CAPACITOR

C65

DSAR

F61

IC881

NOTES:

OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE (2A)
DC/DC CONVERTER

1.About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.

2.Use copper conductors only. (For field wiring)

3.Symbols below indicate.
: Terminal block

NAME

TB

3

N

2

: Connector

SR61

SYMBOL

52C

VLT

X62

S

TB

X62

21S4

52C

VLT

C65

CN711

MC

RED RED

1

WHT

2
3

BLK

4

C

R

MF

1

ORN

2

WHT

3

BLK

4

NAME
TERMINAL BLOCK
R.V. COIL RELAY
R.V. COIL
COMPRESSOR CONTACTOR

X62

C1

21S4

BLK

NR61

BLK

WHTNO COM

RED
BLK

RT61

CN730

RED

BLU

DSAR

GRN/YLW

WHT

WHT

WHT

BLU

SYMBOL

MC

MF
NR61
RT61
SR61

CN661 CN721 CN720

1

F61

TAB21

IC881

TRANS

TAB20

DEICER P.C. BOARD

52C

NAME
COMPRESOR (INNER PROTECTOR)
OUTDOOR FAN MOTOR (INNER PROTECTOR)
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY

SG79B966H01

11

MSH-C24TV -

INDOOR UNIT

TO OUTDOOR
UNIT
CONNECTING

12V

230V~

POWER SUPPLY
CORD
~/N 230V
50Hz

PE

CIRCUIT BREAKER

E1

MODEL WIRING DIAGRAM

TB

3

N

2
L

GRN/YLW

BLU

BRN

RED

BLU

WHT

WHT

F12

1

DSAR

GRN/YLW

BLU
BLU

LD1

2
1

102

CN

WHT

CN

151

3

MV

DISPLAY
P.C. BOARD

CN201

5

3
1

RECEIVER
P.C. BOARD

HIC1

4

52C

3

TRANS

F11

CN

ELECTRONIC CONTROL P.C. BOARD

101

3

REMOTE
CONTROLLER

IC141

NR11

C11

CN

112

CN

111

CN

121

CN211

4
2
1

RT12

RT11

3

BRN
YLW
GRY

MF

WHT
RED
BLK

SYMBOL

C11

DSAR

F11
F12

HIC1

NOTES:

INDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE (3.15A)
THERMAL FUSE (93;)
DC/DC CONVERTER

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

MUH-C24TV -

OUTDOOR UNIT

TB

3

12V

N

2

230V

~

FROM INDOOR UNIT

CONNECTING

GRN/YLW

NOTES:

1.Use copper conductors only (For field wiring).

2.Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers (3,N,2).

3.Symbols below indicate.
:Terminal block, :Connector

NAME

SYMBOL

IC141

MF

MV
NR11
RT11

: Connector

E1

MODEL WIRING DIAGRAM

RT61

CN661

WHT

DSAR

RT63

CN662

SR62
SR61

X62

X52

T61

BLU

WHT WHT

CZ

WHT WHT

BLU

2

1

52C

NAME
HYBRID IC
INDOOR FAN MOTOR (INNER FUSE)
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR

WHT

C

SYMBOL

BLU

MF

YLW

ORN

WHT

BLK

YLW

BLK

WHT

321

CN711

NR61

A2

RED

12

RED

ORN

X62

COM

X52

COM

52C

6543

DEICER P.C. BOARD

C2

CN721

1
2

21S4

3

NO

TAB52

NO

F61

1
3
5

CN730

BLU

RED

C1

RED

S

MC

BLK

R

A1

SYMBOL

RT12

TB

52C

CZ
C1
C2

DSAR

F61

MC

MF
NR61
RT61
RT63
SR61
SR62

TB
T61
X52
X62

21S4

52C

NAME
INDOOR COIL THERMISTOR
TERMINAL BLOCK
CONTACTOR

VG79B069H01

NAME
CZ SURGE ABSORBER
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE (3.15A)
COMPRESSOR (INNER PROTECTOR)
OUTDOOR FAN MOTOR (INNER PROTECTOR)
VARISTOR
DEFROST THERMISTOR
AMBIENT TEMPERATURE THERMISTOR
SOLID STATE RELAY
SOLID STATE RELAY
TERMINAL BLOCK
TRANSFORMER
CONTACTOR
R. V. COIL RELAY
R. V. COIL
COMPRESSOR CONTACTOR

SG79J155H01

12

7

REFRIGERANT SYSTEM DIAGRAM

MSH-C18TV -

Unit:mm

E1

MUH-C18TV -

E1

INDOOR UNIT

Indoor
heat
exchanger

Room temperature
thermistor
RT11

Indoor coil
thermistor
RT12

Distributor

Refrigerant pipe [15.88
(with heat insulator)

Flared connection

Flared connection

Refrigerant pipe [6.35
(with heat insulator)

Muffler

Stop valve
(with service port)

Strainer

Stop valve

4- way valve

Capillary tube

[3.0o[2.0o850

Compressor

Check valve

OUTDOOR UNIT

Strainer

Defrost
thermistor
RT61

Refrigerant flow in cooling
Refrigerant flow in heating

Outdoor
heat
exchanger

Capillary tube

[3.0o[1.4o600

(2 pcs)

R.V. coil
Heating ON
Cooling OFF

MSH-C24TV -

INDOOR UNIT

Indoor coil

Indoor
heat
exchanger

Room temperature
thermistor
RT11

thermistor
RT12

E1

Distributor

Refrigerant pipe [15.88
(with heat insulator)

Flared connection

Flared connection

Stop valve

Refrigerant pipe [9.52
(with heat insulator)

Muffler

Stop valve
(with service port)

Strainer

4- way valve

Receiver

Strainer

Compressor

Capillary tube
[3.0X[2.0X450

Unit:mm

MUH-C24TV -

OUTDOOR UNIT

Outdoor
heat
exchanger

Defrost
thermistor
RT61

Ambient
tempera­ture
thermistor
RT63

R.V. coil
Heating ON

Cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating

E1

13

Model

Piping size O.D : mm Length of connecting pipe : m

Refrigerant piping

Max. length : m

A

15

Indoor unit

Gas 0.43

Liquid 0.5

Gas

15.88

Liquid

6.35

9.52

Outdoor unit

Gas 0

Liquid 0

MSH-C18TV - E1
MUH-C18TV - E1

MSH-C24TV - E1
MUH-C24TV - E1

Indoor
unit

wMax. Height

difference: 5m

A

Refrigerant Piping
Max. Length

w Height difference should be within 5m
regardless of which unit, indoor or outdoor position is high.

Outdoor unit

Model

MSH-C18TV -

E1

MUH-C18TV - E1

Refrigerant piping length (one way)

Outdoor unit precharged

1600

15m

280

7m

0

10m

105

MAX. REFRIGERANT PIPING LENGTH

Model

MSH-C24TV -

E1

MUH-C24TV - E1

Refrigerant piping length (one way)

Outdoor unit precharged

2000

15m

360

7m

0

10m

135

MAX. HEIGHT DIFFERENCE

ADDITIONAL REFRIGERANT CHARGE(R407C : g)

Calculation : Xg=35g/m ✕ (Refrigerant piping length (m)–7)

Calculation : Xg=45g/m ✕ (Refrigerant piping length (m)–7)

14

8

11.4

7.4

8.3

9.3

10.4

12.5

13.5

8.6

9.8

11.0

12.2

14.9

MSH-C18TV - E1

MSH-C24TV - E1

Wet-and dry-bulb
thermometers

Wet-and dry-bulb
thermometers

PERFORMANCE CURVES

MSH-C18TV - MUH-C18TV ­MSH-C24TV - MUH-C24TV -

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

198 ~ 264V

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

(1) Indoor intake air wet-bulb temperature : °CWB
(2) Indoor outlet air wet-bulb temperature : °CWB
(3) Outdoor intake air dry-bulb temperature : °CDB
(4) Total input: W
(5) Indoor intake air dry-bulb temperature : °CDB
(6) Outdoor intake air wet-bulb temperature : °CWB
(7) Total input : W

Indoor air wet/dry-bulb temperature difference on the left side of the chart on this page and next page shows the differ-

ence between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your
reference at service.

, 50Hz

E1E1
E1E1

Cooling

}

Heating

}

How to measure the indoor air wet-bulb/dry-bulb temperature difference

1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.

2. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of room.

5. Press the EMERGENCY OPERATION switch once(twice) to start the EMERGENCY COOL(HEAT) MODE.

6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.

7. 10 minutes later, measure temperature again and check that the temperature does not change.

INDOOR UNIT

OUTDOOR UNIT

15

31.1

28.7

26.3

24.0

21.6

19.2

16.8

14.4

36.1

33.3

30.5

27.7

25.0

22.2

19.4

16.6

MSH-C18TV - E1

MSH-C24TV - E1

NOTE:The above curves are for the heating operation without any frost and defrosting.

15 20

50

2560 30

70(%)

35(:)

0.3

0.4

0.5

0.6

0.7

18 32

230V

7

6

5

4

3

18 32

230V

15 20

50

25
60

30

70(%)

35(:)

6

7

8

9

10

11

15 20

50

25
60

30

70(%)

35(:)

0.2

0.3

0.4

0.5

0.6

0.7

18

32

230V

7

6

5

4

3

15 20

50

2560 30

70(%)

35(:)

8

9

10

11

12

13

18 32

230V

230V

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation

11

Both indoor and outdoor unit are under the same temperature/humidity condition.

Dry-bulb temperature

20
25

Relative humidity(%)

50
60

30 70

22

Air flow should be set at MAX.

33

The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The conversion factor is : 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])

(kgf/F[Gauge])(MPa[Gauge])

Outdoor low pressure

Ambient temperature(˚C)
Ambient humidity(%)

(kgf/F[Gauge])(MPa[Gauge])

MUH-C18TV -

MUH-C24TV -

E1

MUH-C18TV -

Outdoor unit current (A)

Ambient temperature(˚C)
Ambient humidity(%)

E1

MUH-C24TV -

E1

E1

Outdoor low pressure

Ambient temperature(˚C)
Ambient humidity(%)

Outdoor unit current (A)

Ambient temperature(˚C)
Ambient humidity(%)

16

HEAT operation

5 10152025

12

13

14

15

16

7

21

230V

(:)

Condition indoor:Dry bulb temperature 20.0°C

Wet bulb temperature 14.5°C

MUH-C18TV -

13

E1

Outdoor:Dry bulb temperature 7,15,20°C

Wet bulb temperature 6,12,14.5°C

12

11

10

230V

Outdoor unit current (A)

9

5 10152025

7

21

Ambient temperature(˚C)

MUH-C24TV -

E1

Outdoor unit current (A)

(:)

Ambient temperature(˚C)

17

PERFORMANCE DATA COOL operation

MSH-C18TV - : MUH-C18TV - (230V)

CAPACITY : 5.2(KW) SHF : 0.68 INPUT : 2110(W)

INDOOR

DB(:)

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

INDOOR

WB(:)
21
21
22
22
22
23
23
23
24
24
24
24
25
25
25
25
26
26
26
26
26
27
27
27
27
27
28
28
28
28
28
29
29
29
29
29
30
30
30
30
30
31
31
31
31
31
32
32
32
32
32

18
20
18
20
22
18
20
22
18
20
22
24
18
20
22
24
18
20
22
24
26
18
20
22
24
26
18
20
22
24
26
18
20
22
24
26
18
20
22
24
26
18
20
22
24
26
18
20
22
24
26

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT30Q SHC SHF INPUT

6.11

6.37

6.11

6.37

6.63

6.11

6.37

6.63

6.11

6.37

6.63

6.97

6.11

6.37

6.63

6.97

6.11

6.37

6.63

6.97

7.18

6.11

6.37

6.63

6.97

7.18

6.11

6.37

6.63

6.97

7.18

6.11

6.37

6.63

6.97

7.18

6.11

6.37

6.63

6.97

7.18

6.11

6.37

6.63

6.97

7.18

6.11

6.37

6.63

6.97

7.18

21 2725

1688

0.50

3.06
1772

0.38

2.42
1688

0.54

3.30
1772

0.42

2.68
1836

0.30

1.99
1688

0.58

3.54
1772

0.46

2.93
1836

0.34

2.25
1688

0.62

3.79
1772

0.50

3.19
1836

0.38

2.52
1920

0.26

1.81
1688

0.66

4.03
1772

0.54

3.44
1836

0.42

2.78
1920

0.30

2.09
1688

0.70

4.28
1772

0.58

3.69
1836

0.46

3.05
1920

0.34

2.37
2026

0.22

1.58
1688

0.74

4.52
1772

0.62

3.95
1836

0.50

3.32
1920

0.38

2.65
2026

0.26

1.87
1688

0.78

4.77
1772

0.66

4.20
1836

0.54

3.58
1920

0.42

2.93
2026

0.30

2.15
1688

0.82

5.01
1772

0.70

4.46
1836

0.58

3.85
1920

0.46

3.21
2026

0.34

2.44
1688

0.86

5.25
1772

0.74

4.71
1836

0.62

4.11
1920

0.50

3.48
2026

0.38

2.73
1688

0.90

5.50
1772

0.78

4.97
1836

0.66

4.38
1920

0.54

3.76
2026

0.42

3.01
1688

0.94

5.74
1772

0.82

5.22
1836

0.70

4.64
1920

0.58

4.04
2026

0.46

3.30

E1E1

5.85

6.11

5.85

6.11

6.40

5.85

6.11

6.40

5.85

6.11

6.40

6.71

5.85

6.11

6.40

6.71

5.85

6.11

6.40

6.71

6.97

5.85

6.11

6.40

6.71

6.97

5.85

6.11

6.40

6.71

6.97

5.85

6.11

6.40

6.71

6.97

5.85

6.11

6.40

6.71

6.97

5.85

6.11

6.40

6.71

6.97

5.85

6.11

6.40

6.71

6.97

2.93

2.32

3.16

2.57

1.92

3.39

2.81

2.17

3.63

3.06

2.43

1.74

3.86

3.30

2.69

2.01

4.10

3.54

2.94

2.28

1.53

4.33

3.79

3.20

2.55

1.81

4.56

4.03

3.45

2.82

2.09

4.80

4.28

3.71

3.09

2.37

5.03

4.52

3.97

3.35

2.65

5.27

4.77

4.22

3.62

2.93

5.50

5.01

4.48

3.89

3.21

OUTDOOR DB(:)

0.50

0.38

0.54

0.42

0.30

0.58

0.46

0.34

0.62

0.50

0.38

0.26

0.66

0.54

0.42

0.30

0.70

0.58

0.46

0.34

0.22

0.74

0.62

0.50

0.38

0.26

0.78

0.66

0.54

0.42

0.30

0.82

0.70

0.58

0.46

0.34

0.86

0.74

0.62

0.50

0.38

0.90

0.78

0.66

0.54

0.42

0.94

0.82

0.70

0.58

0.46

1772
1878
1772
1878
1952
1772
1878
1952
1772
1878
1952
2026
1772
1878
1952
2026
1772
1878
1952
2026
2131
1772
1878
1952
2026
2131
1772
1878
1952
2026
2131
1772
1878
1952
2026
2131
1772
1878
1952
2026
2131
1772
1878
1952
2026
2131
1772
1878
1952
2026
2131

18

5.62

5.93

5.62

5.93

6.24

5.62

5.93

6.24

5.62

5.93

6.24

6.55

5.62

5.93

6.24

6.55

5.62

5.93

6.24

6.55

6.86

5.62

5.93

6.24

6.55

6.86

5.62

5.93

6.24

6.55

6.86

5.62

5.93

6.24

6.55

6.86

5.62

5.93

6.24

6.55

6.86

5.62

5.93

6.24

6.55

6.86

5.62

5.93

6.24

6.55

6.86

2.81

2.25

3.03

2.49

1.87

3.26

2.73

2.12

3.48

2.96

2.37

1.70

3.71

3.20

2.62

1.97

3.93

3.44

2.87

2.23

1.51

4.16

3.68

3.12

2.49

1.78

4.38

3.91

3.37

2.75

2.06

4.61

4.15

3.62

3.01

2.33

4.83

4.39

3.87

3.28

2.61

5.05

4.62

4.12

3.54

2.88

5.28

4.86

4.37

3.80

3.16

0.50

0.38

0.54

0.42

0.30

0.58

0.46

0.34

0.62

0.50

0.38

0.26

0.66

0.54

0.42

0.30

0.70

0.58

0.46

0.34

0.22

0.74

0.62

0.50

0.38

0.26

0.78

0.66

0.54

0.42

0.30

0.82

0.70

0.58

0.46

0.34

0.86

0.74

0.62

0.50

0.38

0.90

0.78

0.66

0.54

0.42

0.94

0.82

0.70

0.58

0.46

1857
1920
1857
1920
2005
1857
1920
2005
1857
1920
2005
2089
1857
1920
2005
2089
1857
1920
2005
2089
2194
1857
1920
2005
2089
2194
1857
1920
2005
2089
2194
1857
1920
2005
2089
2194
1857
1920
2005
2089
2194
1857
1920
2005
2089
2194
1857
1920
2005
2089
2194

5.41

5.72

5.41

5.72

5.98

5.41

5.72

5.98

5.41

5.72

5.98

6.34

5.41

5.72

5.98

6.34

5.41

5.72

5.98

6.34

6.66

5.41

5.72

5.98

6.34

6.66

5.41

5.72

5.98

6.34

6.66

5.41

5.72

5.98

6.34

6.66

5.41

5.72

5.98

6.34

6.66

5.41

5.72

5.98

6.34

6.66

5.41

5.72

5.98

6.34

6.66

2.70

2.17

2.92

2.40

1.79

3.14

2.63

2.03

3.35

2.86

2.27

1.65

3.57

3.09

2.51

1.90

3.79

3.32

2.75

2.16

1.46

4.00

3.55

2.99

2.41

1.73

4.22

3.78

3.23

2.66

2.00

4.43

4.00

3.47

2.92

2.26

4.65

4.23

3.71

3.17

2.53

4.87

4.46

3.95

3.43

2.80

5.08

4.69

4.19

3.68

3.06

0.50

0.38

0.54

0.42

0.30

0.58

0.46

0.34

0.62

0.50

0.38

0.26

0.66

0.54

0.42

0.30

0.70

0.58

0.46

0.34

0.22

0.74

0.62

0.50

0.38

0.26

0.78

0.66

0.54

0.42

0.30

0.82

0.70

0.58

0.46

0.34

0.86

0.74

0.62

0.50

0.38

0.90

0.78

0.66

0.54

0.42

0.94

0.82

0.70

0.58

0.46

1941
2005
1941
2005
2089
1941
2005
2089
1941
2005
2089
2194
1941
2005
2089
2194
1941
2005
2089
2194
2258
1941
2005
2089
2194
2258
1941
2005
2089
2194
2258
1941
2005
2089
2194
2258
1941
2005
2089
2194
2258
1941
2005
2089
2194
2258
1941
2005
2089
2194
2258