Mitsubishi MUH-GA50VB-E1, MUH-GA60VB-E1, MUH-GA80VB-E1 Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

HFC

utilized

R410A

OUTDOOR UNIT

SERVICE MANUAL

Wireless type
Models

Revision:A

• RoHS PARTS LIST has been added.
Please void OB368.

No. OB368

REVISED EDITION-A

MUH-GA50VB ­MUH-GA60VB ­MUH-GA80VB -

MUH-GA50VB

E1

E1

E1

Indoor unit service manual
MSH-GA•VB Series (OB367)

CONTENTS

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

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

3. SPECIFICATION·················································6

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

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

6. WIRING DIAGRAM ··········································10

7. REFRIGERANT SYSTEM DIAGRAM··············12

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

9. SERVICE FUNCTIONS ····································25

10. TROUBLESHOOTING ······································25

11. DISASSEMBLY INSTRUCTIONS·····················35

12. PARTS LIST······················································39

13. RoHS PARTS LIST···········································45

NOTE:

This service manual describes technical data of outdoor units.
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS Parts List.

Refrigerating

oil

Refrigerant

New refrigerant

R410A

HFC-32: HFC-125 (50%:50%)

Pseudo-azeotropic refrigerant

Not included

A1/A1

72.6

-51.4

1.557
64

Non combustible

0

1730

From liquid phase in cylinder

Possible

Incompatible oil

Non
Non

Previous refrigerant

R22

R22 (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

Refrigerant
Composition (Ratio)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point (:)
Steam pressure [25:](Mpa)
Saturated steam density [25:](Kg/K)
Combustibility
ODP w1
GWP w2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell

w1:Ozone Depletion Potential : based on CFC-11
w2 :Global Warming Potential : based on CO

2

Revision:A

• RoHS PARTS LIST has been added.

1

MUH-A18WV - ➔MUH-GA50VB -

1. Oil separator has been removed.

2. Model name has been changed.
Indication of capacity has been changed. (BTU➔kW)

MUH-A24WV - ➔MUH-GA60VB ­MUH-A30WV - ➔MUH-GA80VB -

1. Model name has been changed.
Indication of capacity has been changed. (BTU➔kW)

TECHNICAL CHANGES

E1E1

E1E1

E1E1

INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT

• This room air conditioner adopts an HFC refrigerant (R410A) which never destroys the ozone layer.

• Pay particular attention to the following points, though the basic installation procedure is same as that for R22 conditioners.
1 As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/

materials are required. Refer to the table below.

2 Take sufficient care not to allow water and other contaminations to enter the R410Arefrigerant during storage and

installation, since it is more susceptible to contaminations than R22.

3 For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant

piping.)

4 Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent

composition change.

2

NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).

New Specification Current Specification

The incompatible refrigerating oil easily separates from
refrigerant and is in the upper layer inside the suction muffler.
Raising position of the oil back hole enables to back the
refrigerating oil of the upper layer to flow back to the
compressor.

Since refrigerant and refrigerating oil are compatible each,
refrigerating oil backs to the compressor through the lower
position oil back hole.

Compressor

Suction muffler

Oil back hole

Refrigerating oil

Refrigerant

Compressor

Suction muffler

Oil back hole

Refrigerating oil /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])

R410A
R22

Conversion chart of refrigerant temperature and pressure

Saturated liquid pressure

(:)

R410A tools

Can R22 tools be used?

Gas leak detector

R410A has high pressures beyond the measurement range of existing
gauges. Port diameters have been changed to prevent any other refrigerant
from being charged into the unit.

Hose material and cap size have been changed to improve the pressure
resistance.

Dedicated for HFC refrigerant.

6.35 mm and 9.52 mm

Description

Clamp bar hole has been enlarged to reinforce the spring strength in the tool.
Provided for flaring work (to be used with R22 flare tool).

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

It is difficult to measure R410A with a charging cylinder because the
refrigerant bubbles due to high pressure and high-speed vaporization

No

No

No

Yes

Yes

New

New

New

Gauge manifold

Charge hose

Torque wrench

Flare tool
Flare gauge

Vacuum pump
adapter

Electronic scale for
refrigerant charging

No : Not Substitutable for R410A Yes : Substitutable for R410A

No 12.7 mm and 15.88 mm

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

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/ff[Gauge])

1.Tools dedicated for the air conditioner with R410A refrigerant

The following tools are required for R410A refrigerant. Some R22 tools can be substituted for R410A tools.
The diameter of the service port on the stop valve in outdoor unit has been changed to prevent any other refrigerant being
charged into the unit. Cap size has been changed from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.

3

R410A

Pipe diameter

mm

6.35

9.52

12.7

15.88

17
22
26
29

Dimension of flare nut

R22

17
22
24
27

2.Refrigerant piping

Wall
thickness

Outside diameter

Pipe

mm

For liquid

For gas

6.35

9.52

12.7

15.88

0.8 mm

0.8 mm

0.8 mm

1.0 mm

Heat resisting foam plastic
Specific gravity 0.045 Thickness 8 mm

Insulation material

Electronic scale for refrigerant charging

Outdoor unit

Refrigerant gas
cylinder
operating valve

Refrigerant gas cylinder
for R410A with siphon

Refrigerant (liquid)

Service port

Gauge manifold
valve (for R410A)

Union

Liquid pipe
Gas pipe

Stop valve

Indoor unit

Charge hose (for R410A)

1 Specifications

Use the refrigerant pipes that meet the following specifications.

• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm (6.35, 9.52, 12.7), 1.0 mm (15.88).
Never use any pipe with a thickness less than 0.8 mm (6.35, 9.52, 12.7), 1.0 mm (15.88), as the pressure resistance is
insufficient.

2 Flaring work and flare nut

Flaring work for R410A pipe differs from that for R22 pipe.
For details of flaring work, refer to Installation manual “FLARING WORK”.

3.Refrigerant oil

Apply the special refrigeration oil (accessories: packed with indoor unit) to the flare and the union seat surfaces.

4.Air purge

• Do not discharge the refrigerant into the atmosphere.
Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant

circuit.

• Use the vacuum pump for air purging for the purpose of environmental protection.

5.Additional charge

For additional charging, charge the refrigerant from liquid phase of the gas cylinder.
If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the
outdoor unit. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. However,
charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.

4

2

Drainage hose

Piping

Air inlet

Air inlet

Air outlet

Drain outlet

(back and side)

Air outlet

(back and side)

1

2

Drain socket
Drain cap {33
Drain cap {16

1
2

—

1
2
1

MUH-GA50VB

MUH-GA60VB
MUH-GA80VB

PART NAMES AND FUNCTIONS

MUH-GA50VB

ACCESSORIES

MUH-GA60VB MUH-GA80VB

5

Outdoor model

Function

Power supply

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

Model
Output
Winding
resistance(at 20:)
Model
Winding
resistance(at 20:)
Dimensions WOHOD
Weight
Sound level(High)
Fan speed(High)
Fan speed regulator
Refrigerant filling
capacity(R410A)
Refrigerating oil (Model)
Thermistor RT61(at 0:)

kW

r/h

K /h

A

A
W
%

A

A

A

W

"

"

mm

kg

dB

rpm

kg
cc

k"

MUH-GA50VB

Single phase

230V, 50Hz

2,196

15

37

0.39

RN196VHSHT

1,300
C-R 1.80
C-S 3.00

RA6V50-PA
WHT-BLK 79.5
BLK-RED 83.0

850o605o290

47
52

828

1

1.80

520 (NEO22)

33.18

Cooling

5.0

2.5

7.93

1,720

94

7.54

2.81

Heating

5.2
—

7.23

1,550

93

6.84

3.23

MUH-GA60VB

Single phase

230V, 50Hz

2,760

25

74

0.58

NN29VBAHT

1,900
C-R 0.80
C-S 1.64

RA6V85-DA
WHT-BLK 68.8
BLK-RED 93.1

840o850o330

74
53

730

1

2.35

1,200 (NEO22)

33.18

Cooling

6.3

3.2

10.39
2,350

98

9.81

2.61

Heating

7.2
—

10.70
2,420

98

10.12

2.90

Electrical

data

Compressor

Fan

motor

Special

remarks

Coefficient of performance(C.O.P)

Capacity

3

SPECIFICATION

NOTE: Test conditions are based on ISO5151.

Cooling : Indoor DB27°C WB19°C Heating : Indoor DB20°C WB 15.5°C

Outdoor DB35°C WB(24°C) Outdoor DB 7°C WB 6°C

Indoor-Outdoor piping length : 5m

6

Outdoor model

Function

Cooling

Power supply

Capacity
Dehumidification

Capacity

Air flow(High/Low )
Power outlet
Running current
Power input
Power factor

Electrical

data

Starting current
Compressor motor current
Fan motor current

Coefficient of performance(C.O.P)

kW

R/h

K /h

A

A
W
%

A

A

A

8.5

4.6

2,940/1,470

14.42
3,191

96

13.85

2.61

www

Model
Output
Winding

Compressor

resistance(at 20:)

W

"

Model
Winding

Fan

motor

resistance(at 20:)
Dimensions WOHOD
Weight
Sound level(High/Low )
Fan speed(High/Low )

"

mm

kg

w

dB

w

rpm

WHT-BLK 62.8 BLK-YLW 55.9

Fan speed regulator
Refrigerant filling
capacity(R410A)

Special

remarks

Refrigerating oil (Model)
Thermistor RT61(at 0:)
Thermistor RT62(at 25:)
Thermistor RT63(at 0:)

kg
cc

k"
k"
k"

NOTE: Test conditions are based on ISO5151.

Cooling : Indoor DB27°C WB19°C Heating : Indoor DB20°C WB 15.5°C

Outdoor DB35°C WB(24°C) Outdoor DB 7°C WB 6°C

Indoor-Outdoor piping length : 5m

w Reference value

MUH-GA80VB

Single phase

230V, 50Hz

25

90

0.57

NN37VAAHT

2,500
C-R 0.64
C-S 1.63

RA6V75-AD

YLW-RED 26.0

840o850o330

77

w

55/53

805/435

w

2

2.40

1,300 (NEO 22)

33.18

231.44

33.18

Heating

9.4
—

2,940/1,470

15.19
3,361

96

14.62

2.74

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

BAND CENTER FREQUENCIES, Hz

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

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

52

SPL(dB(A)) LINE

High

FAN SPEED

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

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

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

BAND CENTER FREQUENCIES, Hz

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

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

53

SPL(dB(A)) LINE

High

FAN SPEED

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

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

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

BAND CENTER FREQUENCIES, Hz

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

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

55

SPL(dB(A)) LINE

High

FAN SPEED

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

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

OUTDOORUNIT

MICROPHONE

1m

NOISE CRITERIA CURVES

MUH-GA50VB

MUH-GA60VB

MUH-GA80VB

8

5

100mm or more

1

0

0m

m

o

r m

ore

100mm or more

350mm or more

5

0

0

m

m

o

r m

o

re

REQUIRED SP ACE

Drainage
3holes [33

Air out

Air in

Air in

Service panel

Liquid refrigerant
pipe joint

Refregerant pipe
(flared) [6.35

Gas refregerant
pipe joint

Refregerant pipe
(flared) [12.7

35-

30

-

30

100

161

157

74

850

500

183

20

292

605

248

35

350

50

290

310

345

20

355

90

Drainage
hole [16.2

30

-

35-

155

90

198

40

515

299

66

34

51

330

360

850

430

500

80

121

840

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

Service panel

Gas refrigerant
pipe joint
Refrigerant pipe
(flared) [15.88

Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) [6.35 (MUH-GA60VB)

[9.52 (MUH-GA80VB)

REQUIRED SP ACE

OUTLINES AND DIMENSIONS

MUH-GA50VB

Unit: mm

MUH-GA60VB MUH-GA80VB

9

6

DEICER
P.C. BOARD

BLU

X52

X52

NO

COM

TAB52

BLU

52C

A2

A1

T61

BLK

WHT

RED

BRN

TB2

7

1

CN730

BLK

WHT

CIRCUIT BREAKER

CN721

3

52C

4

RED

C2

ORN

DSAR

12V

WHT

C1

BLK

S

C

R

MC

RED

NR61

3

5

BLU

TB1

GRN/YLW

POWER SUPPLY

~ / N 230V 50Hz

CN661

RT61

X62

X62

1
2
3

21S4

BLU

BRN

BLU

BRN

SR61

F61

CN711

MF

123

21

ORN

RED

34

NO

COM

TO INDOOR UNIT CONNECTING

N

3

N

L

PE

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).

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

SYMBOL

C1
C2

DSAR

F61
MC

MF
NR61
RT61
SR61

TB1
TB2
T61
X52
X62

21S4

52C

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

MC

CN661

3

1
2

CN721

21S4

MF

SR62

SR61

TAB20

GRN/YLW

BLU

CIRCUIT BREAKER

POWER SUPPLY

BLU

BRN

DSAR

BLK
BRN

RED

DEICER P.C. BOARD

4

C1

BLK

RED

3

WHT

S

C

R

CN730

RT61

BLK

2
3

1

RED

WHT

12V

TO
CONNECTING

INDOOR UNIT

TB2

3

N

TB1

L

N

PE

~/N

NR61

F61

T61

C65

CN711

52C

230V

50Hz

1234

WHT

BLK

RED

ORN

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.
: Connector

: Terminal block

NOTES:

SYMBOL

C1

C65

DSAR

F61

MC

NAME
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE (2A)
COMPRESOR (INNER PROTECTOR)

SYMBOL

MF
NR61
RT61

SR61,SR62

T61

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

SYMBOL
TB1,TB2

21S4

52C

NAME
TERMINAL BLOCK
R.V. COIL
COMPRESSOR CONTACTOR

WIRING DIAGRAM

MUH-GA50VB

MUH-GA60VB

10

MUH-GA80VB

SYMBOL

CZ
C1
C2

DSAR

F61

LEV

MC

NOTES:

RT61

RT62RT63

MF

LEV

YLW

BLK

WHT

ORN

RED

21

CIRCUIT BREAKER

TB1

L
N

3

PE

GRN/YLW

TB2

~ / N 230V 50Hz

POWER SUPPLY

N

12V

TO INDOOR UNIT CONNECTING

NAME
CZ SURGE ABSORBER
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(3.15A)
EXPANSION VALVE COIL
COMPRESSOR (INNER PROTECTOR)

BRN

DSAR

BRN

BLU

SYMBOL

MF
NR61
RT61
RT62
RT63
SR61
SR62

CN662

CN661

X52X62

DEICER
P.C. BOARD

BRN

BLU

1

2

52C

WHTWHT

CZ

OUTDOOR FAN MOTOR (INNER PROTECTOR)
VARISTOR
DEFROST THERMISTOR
DISCHARGE TEMPERATURE THERMIST OR
AMBIENT TEMPERA TURE THERMIST OR
SOLID STATE RELAY
SOLID STATE RELAY

6

CN724

SR62
SR61

T61

WHT

A1 A2BLU

52C

NAME NAME

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).

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

YLW

BLK

123

NR61

3456

WHT

CN711

X62

COM

X52

COM

C1

RED

ORN

CN721

NO

TAB52

NO

CN730

F61

RED

S

BLK

SYMBOL

TB1
TB2

T61
X52
X62

21S4

52C

C2

1
2

21S4

3

7
5
3
1

C

MC

R

BLU

RED

BLU

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

11

7

Muffler

REFRIGERANT SYSTEM DIAGRAM

MUH-GA50VB

Refrigerant pipe [12.7
(with heat insulator)

Flared connection

Flared connection

Refrigerant pipe [6.35
(with heat insulator)

Stop valve
(with service port)

Stop
valve

Strainer

4- way valve

Capillary tube

[3.0o[1.6o450

#100

Compressor

Check valve

Defrost
thermistor
RT61

Capillary tube

[3.0o[1.6o300

Unit:mm

Outdoor
heat
exchanger

Capillary tube

[3.0o[1.6o750

(2 pcs)

R.V. coil
Heating ON
Cooling OFF

MUH-GA60VB

Refrigerant pipe [15.88
(with heat insulator)

Flared connection

Flared connection

Refrigerant pipe [6.35
(with heat insulator)

Stop valve
(with service port)

Muffler

Receiver

Stop valve

Strainer

4- way valve

Capillary tube

[3.0X[2.0X750

#100

Check valve

Muffler

#100

Compressor

Capillary tube
[3.0X[2.0X750

Refrigerant flow in cooling
Refrigerant flow in heating

Outdoor
heat
exchanger

Defrost
thermistor
RT61

R.V. coil
Heating ON
Cooling OFF

12

MUH-GA80VB

Outdoor
heat
exchanger

Flared connection

Defrost
thermistor
RT61

Discharge
temperature
thermistor
RT62

Flared connection

Stop valve

Stop valve
(with service port)

Capillary tube
[3.6✕[2.4✕50

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe [15.88
(with heat insulator)

Refrigerant pipe [9.52
(with heat insulator)

LEV

R.V. coil
heating ON
cooling OFF

Muffler

#100

Strainer

#100

Receiver

Muffler

Ambient
temperature
thermistor
RT63

Strainer

#100

Indoor
unit

wMax. Height

difference:
10m(MSH-GA50/GA60VB)/
15m(MSH-GA80VB)

A

Refrigerant Piping
Max. Length

w Height difference should be within 10m(MSH-GA50VB/GA60VB)/
15m(MSH-GA80VB) regardless of which unit, indoor or outdoor position is high.

Outdoor unit

Model

Piping size O.D : mm

Refrigerant piping

Max. length : m

A

25

30

Gas

12.7

15.88

Liquid

6.35

9.52

MUH-GA50VB

MUH-GA60VB
MUH-GA80VB

Unit:mm

MAX. REFRIGERANT PIPING LENGTH

MAX. HEIGHT DIFFERENCE

13

Model

MUH-GA50VB

Refrigerant piping length (one way)

Outdoor unit precharged

1,800

15m

160

20m

260

25m

360

7m

0

10m

60

ADDITIONAL REFRIGERANT CHARGE(R410A : g)

Model

MUH-GA60VB

Refrigerant piping length (one way)

Outdoor unit precharged

2,350

15m

160

20m

260

25m

360

7m

0

10m

60

Outdoor unit

precharged

2,400

0 165 440 715 990 1,265

Refrigerant piping length (one way)

15m10m7m

Model

MUH-GA80VB

20m

25m 30m

Calculation : Xg=20g/m ✕ (Refrigerant piping length (m)–7)

Calculation : Xg=20g/m ✕ (Refrigerant piping length (m)–7)

Calculation : Xg=55g/mo(Refrigerant piping length(m)-7)

14

8

11.6

10.5

7.5

8.5

9.5

12.8

15.6

9.8

12.6

11.2

14.1

17.2

17.4

13.9

12.4

10.8

15.6

19.2

MUH-GA50VB

MSH-GA60VB

MSH-GA50VB

MUH-GA60VB

MSH-GA80VB

MUH-GA80VB

Wet and dry-bulb
thermometers

Wet and dry-bulb
thermometers

PERFORMANCE CURVES

MUH-GA50VB MUH-GA60VB MUH-GA80VB

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, 50Hz

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

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

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

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

3. Check that the air filter is cleaned.

4. Open windows and doors of room.

5. Press the EMERGENCY OPERATION switch once(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

Cooling

}

Heating

}

OUTDOOR UNIT

15

26.6

24.5

22.5

20.4

18.4

16.3

14.3

12.3

36.8

34.0

31.1

28.3

25.5

22.6

19.8

17.0

38.4

35.5

32.5

29.6

26.6

23.6

20.7

17.7

MUH-GA50VB

MSH-GA60VB

MSH-GA50VB

MUH-GA60VB

MSH-GA80VB

MUH-GA80VB

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

18

32

70(%)

230V

15 20

50

25
60

30 35

0.7

0.8

0.9

1.0

1.1

1.2

1.3

7

8

9

10

11

12

13

(:)

15 20

50

25
60

30
70(%)

35(:)

5

6

8

7

18 32

230V

18

32

70(%)

230V

15 20

50

25
60

30 35

0.6

0.7

0.8

0.9

1.0

1.1

(:)

6

7

8

9

10

11

10

11

8

9

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(%)

MUH-GA50VB

Outdoor unit current (A)

MUH-GA50VB

Ambient temperature(˚C)
Ambient humidity(%)

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

Outdoor low pressure

MUH-GA60VB

Ambient temperature(˚C)
Ambient humidity(%)

MUH-GA60VB

Outdoor unit current (A)

Ambient temperature(˚C)
Ambient humidity(%)

16

5 10152025

7

8

9

10

7

21

230V

(:)

14

13

12

11

230V

18

32

70(%)

230V

15 20

50

25
60

30 35

5

6

7

8

9

10

11

(:)

5

6

7

8

9

18

32

70(%)

230V

15 20

50

25
60

30 35

10

11

12

13

14

15

16

(:)

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

7

21

230V

(:)

5 10152025

16

17

18

19

20

MUH-GA80VB

MUH-GA80VB

Outdoor low pressure

HEAT operation

Condition indoor:Dry bulb temperature 20.0°C

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

MUH-GA50VB

Ambient temperature(˚C)
Ambient humidity(%)

Wet bulb temperature 14.5°C

Wet bulb temperature 6,12,14.5°C

Outdoor unit current(A)

Ambient temperature(˚C)
Ambient humidity(%)

MUH-GA60VB

Outdoor unit current (A)

Ambient temperature(˚C)

Outdoor unit current(A)

Ambient temperature(˚C)

MUH-GA80VB

Outdoor unit current (A)

Ambient temperature(˚C)

17

21 18 5.88 2.76 0.47 1424 5.63 2.64 0.47 1495 5.40 2.54 0.47 1566 5.20 2.44 0.47 1638
21 20 6.13 2.14 0.35 1495 5.88 2.06 0.35 1584 5.70 2.00 0.35 1620 5.50 1.93 0.35 1691
22 18 5.88 3.00 0.51 1424 5.63 2.87 0.51 1495 5.40 2.75 0.51 1566 5.20 2.65 0.51 1638
22 20 6.13 2.39 0.39 1495 5.88 2.29 0.39 1584 5.70 2.22 0.39 1620 5.50 2.15 0.39 1691
22 22 6.38 1.72 0.27 1549 6.15 1.66 0.27 1647 6.00 1.62 0.27 1691 5.75 1.55 0.27 1762
23 18 5.88 3.23 0.55 1424 5.63 3.09 0.55 1495 5.40 2.97 0.55 1566 5.20 2.86 0.55 1638
23 20 6.13 2.63 0.43 1495 5.88 2.53 0.43 1584 5.70 2.45 0.43 1620 5.50 2.37 0.43 1691
23 22 6.38 1.98 0.31 1549 6.15 1.91 0.31 1647 6.00 1.86 0.31 1691 5.75 1.78 0.31 1762
24 18 5.88 3.47 0.59 1424 5.63 3.32 0.59 1495 5.40 3.19 0.59 1566 5.20 3.07 0.59 1638
24 20 6.13 2.88 0.47 1495 5.88 2.76 0.47 1584 5.70 2.68 0.47 1620 5.50 2.59 0.47 1691
24 22 6.38 2.23 0.35 1549 6.15 2.15 0.35 1647 6.00 2.10 0.35 1691 5.75 2.01 0.35 1762
24 24 6.70 1.54 0.23 1620 6.45 1.48 0.23 1709 6.30 1.45 0.23 1762 6.10 1.40 0.23 1851
25 18 5.88 3.70 0.63 1424 5.63 3.54 0.63 1495 5.40 3.40 0.63 1566 5.20 3.28 0.63 1638
25 20 6.13 3.12 0.51 1495 5.88 3.00 0.51 1584 5.70 2.91 0.51 1620 5.50 2.81 0.51 1691
25 22 6.38 2.49 0.39 1549 6.15 2.40 0.39 1647 6.00 2.34 0.39 1691 5.75 2.24 0.39 1762
25 24 6.70 1.81 0.27 1620 6.45 1.74 0.27 1709 6.30 1.70 0.27 1762 6.10 1.65 0.27 1851
26 18 5.88 3.94 0.67 1424 5.63 3.77 0.67 1495 5.40 3.62 0.67 1566 5.20 3.48 0.67 1638
26 20 6.13 3.37 0.55 1495 5.88 3.23 0.55 1584 5.70 3.14 0.55 1620 5.50 3.03 0.55 1691
26 22 6.38 2.74 0.43 1549 6.15 2.64 0.43 1647 6.00 2.58 0.43 1691 5.75 2.47 0.43 1762
26 24 6.70 2.08 0.31 1620 6.45 2.00 0.31 1709 6.30 1.95 0.31 1762 6.10 1.89 0.31 1851
26 26 6.90 1.31 0.19 1709 6.70 1.27 0.19 1798 6.60 1.25 0.19 1851 6.40 1.22 0.19 1905
27 18 5.88 4.17 0.71 1424 5.63 3.99 0.71 1495 5.40 3.83 0.71 1566 5.20 3.69 0.71 1638
27 20 6.13 3.61 0.59 1495 5.88 3.47 0.59 1584 5.70 3.36 0.59 1620 5.50 3.25 0.59 1691
27 22 6.38 3.00 0.47 1549 6.15 2.89 0.47 1647 6.00 2.82 0.47 1691 5.75 2.70 0.47 1762
27 24 6.70 2.35 0.35 1620 6.45 2.26 0.35 1709 6.30 2.21 0.35 1762 6.10 2.14 0.35 1851
27 26 6.90 1.59 0.23 1709 6.70 1.54 0.23 1798 6.60 1.52 0.23 1851 6.40 1.47 0.23 1905
28 18 5.88 4.41 0.75 1424 5.63 4.22 0.75 1495 5.40 4.05 0.75 1566 5.20 3.90 0.75 1638
28 20 6.13 3.86 0.63 1495 5.88 3.70 0.63 1584 5.70 3.59 0.63 1620 5.50 3.47 0.63 1691
28 22 6.38 3.25 0.51 1549 6.15 3.14 0.51 1647 6.00 3.06 0.51 1691 5.75 2.93 0.51 1762
28 24 6.70 2.61 0.39 1620 6.45 2.52 0.39 1709 6.30 2.46 0.39 1762 6.10 2.38 0.39 1851
28 26 6.90 1.86 0.27 1709 6.70 1.81 0.27 1798 6.60 1.78 0.27 1851 6.40 1.73 0.27 1905
29 18 5.88 4.64 0.79 1424 5.63 4.44 0.79 1495 5.40 4.27 0.79 1566 5.20 4.11 0.79 1638
29 20 6.13 4.10 0.67 1495 5.88 3.94 0.67 1584 5.70 3.82 0.67 1620 5.50 3.69 0.67 1691
29 22 6.38 3.51 0.55 1549 6.15 3.38 0.55 1647 6.00 3.30 0.55 1691 5.75 3.16 0.55 1762
29 24 6.70 2.88 0.43 1620 6.45 2.77 0.43 1709 6.30 2.71 0.43 1762 6.10 2.62 0.43 1851
29 26 6.90 2.14 0.31 1709 6.70 2.08 0.31 1798 6.60 2.05 0.31 1851 6.40 1.98 0.31 1905
30 18 5.88 4.88 0.83 1424 5.63 4.67 0.83 1495 5.40 4.48 0.83 1566 5.20 4.32 0.83 1638
30 20 6.13 4.35 0.71 1495 5.88 4.17 0.71 1584 5.70 4.05 0.71 1620 5.50 3.91 0.71 1691
30 22 6.38 3.76 0.59 1549 6.15 3.63 0.59 1647 6.00 3.54 0.59 1691 5.75 3.39 0.59 1762
30 24 6.70 3.15 0.47 1620 6.45 3.03 0.47 1709 6.30 2.96 0.47 1762 6.10 2.87 0.47 1851
30 26 6.90 2.42 0.35 1709 6.70 2.35 0.35 1798 6.60 2.31 0.35 1851 6.40 2.24 0.35 1905
31 18 5.88 5.11 0.87 1424 5.63 4.89 0.87 1495 5.40 4.70 0.87 1566 5.20 4.52 0.87 1638
31 20 6.13 4.59 0.75 1495 5.88 4.41 0.75 1584 5.70 4.28 0.75 1620 5.50 4.13 0.75 1691
31 22 6.38 4.02 0.63 1549 6.15 3.87 0.63 1647 6.00 3.78 0.63 1691 5.75 3.62 0.63 1762
31 24 6.70 3.42 0.51 1620 6.45 3.29 0.51 1709 6.30 3.21 0.51 1762 6.10 3.11 0.51 1851
31 26 6.90 2.69 0.39 1709 6.70 2.61 0.39 1798 6.60 2.57 0.39 1851 6.40 2.50 0.39 1905
32 18 5.88 5.35 0.91 1424 5.63 5.12 0.91 1495 5.40 4.91 0.91 1566 5.20 4.73 0.91 1638
32 20 6.13 4.84 0.79 1495 5.88 4.64 0.79 1584 5.70 4.50 0.79 1620 5.50 4.35 0.79 1691
32 22 6.38 4.27 0.67 1549 6.15 4.12 0.67 1647 6.00 4.02 0.67 1691 5.75 3.85 0.67 1762
32 24 6.70 3.69 0.55 1620 6.45 3.55 0.55 1709 6.30 3.47 0.55 1762 6.10 3.36 0.55 1851
32 26 6.90 2.97 0.43 1709 6.70 2.88 0.43 1798 6.60 2.84 0.43 1851 6.40 2.75 0.43 1905

INDOOR

DB(:)

INDOOR

WB(:)

OUTDOOR DB(:)

21 2725 30

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

CAPACITY : 5.0(kW) SHF : 0.65 INPUT : 1780(W)

PERFORMANCE DATA COOL operation

MSH-GA50VB : MUH-GA50VB (230V)

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

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

18

PERFORMANCE DATA COOL operation

MSH-GA50VB : MUH-GA50VB (230V)

CAPACITY : 5.0(kW) SHF : 0.65 INPUT : 1780(W)

INDOOR

DB(:)

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

INDOOR

WB(:)

21 18 4.90 2.30 0.47 1744 4.50 2.12 0.47 1851 4.33 2.03 0.47 1887
21 20 5.15 1.80 0.35 1816 4.80 1.68 0.35 1905 4.63 1.62 0.35 1958
22 18 4.90 2.50 0.51 1744 4.50 2.30 0.51 1851 4.33 2.21 0.51 1887
22 20 5.15 2.01 0.39 1816 4.80 1.87 0.39 1905 4.63 1.80 0.39 1958
22 22 5.45 1.47 0.27 1887 5.10 1.38 0.27 1994 4.93 1.33 0.27 2029
23 18 4.90 2.70 0.55 1744 4.50 2.48 0.55 1851 4.33 2.38 0.55 1887
23 20 5.15 2.21 0.43 1816 4.80 2.06 0.43 1905 4.63 1.99 0.43 1958
23 22 5.45 1.69 0.31 1887 5.10 1.58 0.31 1994 4.93 1.53 0.31 2029
24 18 4.90 2.89 0.59 1744 4.50 2.66 0.59 1851 4.33 2.55 0.59 1887
24 20 5.15 2.42 0.47 1816 4.80 2.26 0.47 1905 4.63 2.17 0.47 1958
24 22 5.45 1.91 0.35 1887 5.10 1.79 0.35 1994 4.93 1.72 0.35 2029
24 24 5.75 1.32 0.23 1958 5.40 1.24 0.23 2047 5.25 1.21 0.23 2092
25 18 4.90 3.09 0.63 1744 4.50 2.84 0.63 1851 4.33 2.72 0.63 1887
25 20 5.15 2.63 0.51 1816 4.80 2.45 0.51 1905 4.63 2.36 0.51 1958
25 22 5.45 2.13 0.39 1887 5.10 1.99 0.39 1994 4.93 1.92 0.39 2029
25 24 5.75 1.55 0.27 1958 5.40 1.46 0.27 2047 5.25 1.42 0.27 2092
26 18 4.90 3.28 0.67 1744 4.50 3.02 0.67 1851 4.33 2.90 0.67 1887
26 20 5.15 2.83 0.55 1816 4.80 2.64 0.55 1905 4.63 2.54 0.55 1958
26 22 5.45 2.34 0.43 1887 5.10 2.19 0.43 1994 4.93 2.12 0.43 2029
26 24 5.75 1.78 0.31 1958 5.40 1.67 0.31 2047 5.25 1.63 0.31 2092
26 26 6.05 1.15 0.19 2029 5.70 1.08 0.19 2118 5.53 1.05 0.19 2163
27 18 4.90 3.48 0.71 1744 4.50 3.20 0.71 1851 4.33 3.07 0.71 1887
27 20 5.15 3.04 0.59 1816 4.80 2.83 0.59 1905 4.63 2.73 0.59 1958
27 22 5.45 2.56 0.47 1887 5.10 2.40 0.47 1994 4.93 2.31 0.47 2029
27 24 5.75 2.01 0.35 1958 5.40 1.89 0.35 2047 5.25 1.84 0.35 2092
27 26 6.05 1.39 0.23 2029 5.70 1.31 0.23 2118 5.53 1.27 0.23 2163
28 18 4.90 3.68 0.75 1744 4.50 3.38 0.75 1851 4.33 3.24 0.75 1887
28 20 5.15 3.24 0.63 1816 4.80 3.02 0.63 1905 4.63 2.91 0.63 1958
28 22 5.45 2.78 0.51 1887 5.10 2.60 0.51 1994 4.93 2.51 0.51 2029
28 24 5.75 2.24 0.39 1958 5.40 2.11 0.39 2047 5.25 2.05 0.39 2092
28 26 6.05 1.63 0.27 2029 5.70 1.54 0.27 2118 5.53 1.49 0.27 2163
29 18 4.90 3.87 0.79 1744 4.50 3.56 0.79 1851 4.33 3.42 0.79 1887
29 20 5.15 3.45 0.67 1816 4.80 3.22 0.67 1905 4.63 3.10 0.67 1958
29 22 5.45 3.00 0.55 1887 5.10 2.81 0.55 1994 4.93 2.71 0.55 2029
29 24 5.75 2.47 0.43 1958 5.40 2.32 0.43 2047 5.25 2.26 0.43 2092
29 26 6.05 1.88 0.31 2029 5.70 1.77 0.31 2118 5.53 1.71 0.31 2163
30 18 4.90 4.07 0.83 1744 4.50 3.74 0.83 1851 4.33 3.59 0.83 1887
30 20 5.15 3.66 0.71 1816 4.80 3.41 0.71 1905 4.63 3.28 0.71 1958
30 22 5.45 3.22 0.59 1887 5.10 3.01 0.59 1994 4.93 2.91 0.59 2029
30 24 5.75 2.70 0.47 1958 5.40 2.54 0.47 2047 5.25 2.47 0.47 2092
30 26 6.05 2.12 0.35 2029 5.70 2.00 0.35 2118 5.53 1.93 0.35 2163
31 18 4.90 4.26 0.87 1744 4.50 3.92 0.87 1851 4.33 3.76 0.87 1887
31 20 5.15 3.86 0.75 1816 4.80 3.60 0.75 1905 4.63 3.47 0.75 1958
31 22 5.45 3.43 0.63 1887 5.10 3.21 0.63 1994 4.93 3.10 0.63 2029
31 24 5.75 2.93 0.51 1958 5.40 2.75 0.51 2047 5.25 2.68 0.51 2092
31 26 6.05 2.36 0.39 2029 5.70 2.22 0.39 2118 5.53 2.15 0.39 2163
32 18 4.90 4.46 0.91 1744 4.50 4.10 0.91 1851 4.33 3.94 0.91 1887
32 20 5.15 4.07 0.79 1816 4.80 3.79 0.79 1905 4.63 3.65 0.79 1958
32 22 5.45 3.65 0.67 1887 5.10 3.42 0.67 1994 4.93 3.30 0.67 2029
32 24 5.75 3.16 0.55 1958 5.40 2.97 0.55 2047 5.25 2.89 0.55 2092
32 26 6.05 2.60 0.43 2029 5.70 2.45 0.43 2118 5.53 2.38 0.43 2163

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 INPUT

35 4340

OUTDOOR DB(:)

19

21 18 7.40 3.41 0.46 1928 7.09 3.26 0.46 2024 6.80 3.13 0.46 2121 6.55 3.01 0.46 2217
21 20 7.72 2.62 0.34 2024 7.40 2.52 0.34 2145 7.18 2.44 0.34 2193 6.93 2.36 0.34 2290
22 18 7.40 3.70 0.50 1928 7.09 3.54 0.50 2024 6.80 3.40 0.50 2121 6.55 3.28 0.50 2217
22 20 7.72 2.93 0.38 2024 7.40 2.81 0.38 2145 7.18 2.73 0.38 2193 6.93 2.63 0.38 2290
22 22 8.03 2.09 0.26 2097 7.75 2.01 0.26 2229 7.56 1.97 0.26 2290 7.25 1.88 0.26 2386
23 18 7.40 4.00 0.54 1928 7.09 3.83 0.54 2024 6.80 3.67 0.54 2121 6.55 3.54 0.54 2217
23 20 7.72 3.24 0.42 2024 7.40 3.11 0.42 2145 7.18 3.02 0.42 2193 6.93 2.91 0.42 2290
23 22 8.03 2.41 0.30 2097 7.75 2.32 0.30 2229 7.56 2.27 0.30 2290 7.25 2.17 0.30 2386
24 18 7.40 4.29 0.58 1928 7.09 4.11 0.58 2024 6.80 3.95 0.58 2121 6.55 3.80 0.58 2217
24 20 7.72 3.55 0.46 2024 7.40 3.41 0.46 2145 7.18 3.30 0.46 2193 6.93 3.19 0.46 2290
24 22 8.03 2.73 0.34 2097 7.75 2.63 0.34 2229 7.56 2.57 0.34 2290 7.25 2.46 0.34 2386
24 24 8.44 1.86 0.22 2193 8.13 1.79 0.22 2314 7.94 1.75 0.22 2386 7.69 1.69 0.22 2506
25 18 7.40 4.59 0.62 1928 7.09 4.39 0.62 2024 6.80 4.22 0.62 2121 6.55 4.06 0.62 2217
25 20 7.72 3.86 0.50 2024 7.40 3.70 0.50 2145 7.18 3.59 0.50 2193 6.93 3.47 0.50 2290
25 22 8.03 3.05 0.38 2097 7.75 2.94 0.38 2229 7.56 2.87 0.38 2290 7.25 2.75 0.38 2386
25 24 8.44 2.19 0.26 2193 8.13 2.11 0.26 2314 7.94 2.06 0.26 2386 7.69 2.00 0.26 2506
26 18 7.40 4.89 0.66 1928 7.09 4.68 0.66 2024 6.80 4.49 0.66 2121 6.55 4.32 0.66 2217
26 20 7.72 4.17 0.54 2024 7.40 4.00 0.54 2145 7.18 3.88 0.54 2193 6.93 3.74 0.54 2290
26 22 8.03 3.37 0.42 2097 7.75 3.25 0.42 2229 7.56 3.18 0.42 2290 7.25 3.04 0.42 2386
26 24 8.44 2.53 0.30 2193 8.13 2.44 0.30 2314 7.94 2.38 0.30 2386 7.69 2.31 0.30 2506
26 26 8.69 1.56 0.18 2314 8.44 1.52 0.18 2434 8.32 1.50 0.18 2506 8.06 1.45 0.18 2579
27 18 7.40 5.18 0.70 1928 7.09 4.96 0.70 2024 6.80 4.76 0.70 2121 6.55 4.59 0.70 2217
27 20 7.72 4.48 0.58 2024 7.40 4.29 0.58 2145 7.18 4.17 0.58 2193 6.93 4.02 0.58 2290
27 22 8.03 3.69 0.46 2097 7.75 3.56 0.46 2229 7.56 3.48 0.46 2290 7.25 3.33 0.46 2386
27 24 8.44 2.87 0.34 2193 8.13 2.76 0.34 2314 7.94 2.70 0.34 2386 7.69 2.61 0.34 2506
27 26 8.69 1.91 0.22 2314 8.44 1.86 0.22 2434 8.32 1.83 0.22 2506 8.06 1.77 0.22 2579
28 18 7.40 5.48 0.74 1928 7.09 5.24 0.74 2024 6.80 5.03 0.74 2121 6.55 4.85 0.74 2217
28 20 7.72 4.78 0.62 2024 7.40 4.59 0.62 2145 7.18 4.45 0.62 2193 6.93 4.30 0.62 2290
28 22 8.03 4.02 0.50 2097 7.75 3.87 0.50 2229 7.56 3.78 0.50 2290 7.25 3.62 0.50 2386
28 24 8.44 3.21 0.38 2193 8.13 3.09 0.38 2314 7.94 3.02 0.38 2386 7.69 2.92 0.38 2506
28 26 8.69 2.26 0.26 2314 8.44 2.19 0.26 2434 8.32 2.16 0.26 2506 8.06 2.10 0.26 2579
29 18 7.40 5.77 0.78 1928 7.09 5.53 0.78 2024 6.80 5.31 0.78 2121 6.55 5.11 0.78 2217
29 20 7.72 5.09 0.66 2024 7.40 4.89 0.66 2145 7.18 4.74 0.66 2193 6.93 4.57 0.66 2290
29 22 8.03 4.34 0.54 2097 7.75 4.18 0.54 2229 7.56 4.08 0.54 2290 7.25 3.91 0.54 2386
29 24 8.44 3.55 0.42 2193 8.13 3.41 0.42 2314 7.94 3.33 0.42 2386 7.69 3.23 0.42 2506
29 26 8.69 2.61 0.30 2314 8.44 2.53 0.30 2434 8.32 2.49 0.30 2506 8.06 2.42 0.30 2579
30 18 7.40 6.07 0.82 1928 7.09 5.81 0.82 2024 6.80 5.58 0.82 2121 6.55 5.37 0.82 2217
30 20 7.72 5.40 0.70 2024 7.40 5.18 0.70 2145 7.18 5.03 0.70 2193 6.93 4.85 0.70 2290
30 22 8.03 4.66 0.58 2097 7.75 4.49 0.58 2229 7.56 4.38 0.58 2290 7.25 4.20 0.58 2386
30 24 8.44 3.88 0.46 2193 8.13 3.74 0.46 2314 7.94 3.65 0.46 2386 7.69 3.54 0.46 2506
30 26 8.69 2.96 0.34 2314 8.44 2.87 0.34 2434 8.32 2.83 0.34 2506 8.06 2.74 0.34 2579
31 18 7.40 6.37 0.86 1928 7.09 6.10 0.86 2024 6.80 5.85 0.86 2121 6.55 5.63 0.86 2217
31 20 7.72 5.71 0.74 2024 7.40 5.48 0.74 2145 7.18 5.31 0.74 2193 6.93 5.13 0.74 2290
31 22 8.03 4.98 0.62 2097 7.75 4.80 0.62 2229 7.56 4.69 0.62 2290 7.25 4.49 0.62 2386
31 24 8.44 4.22 0.50 2193 8.13 4.06 0.50 2314 7.94 3.97 0.50 2386 7.69 3.84 0.50 2506
31 26 8.69 3.30 0.38 2314 8.44 3.21 0.38 2434 8.32 3.16 0.38 2506 8.06 3.06 0.38 2579
32 18 7.40 6.66 0.90 1928 7.09 6.38 0.90 2024 6.80 6.12 0.90 2121 6.55 5.90 0.90 2217
32 20 7.72 6.02 0.78 2024 7.40 5.77 0.78 2145 7.18 5.60 0.78 2193 6.93 5.41 0.78 2290
32 22 8.03 5.30 0.66 2097 7.75 5.11 0.66 2229 7.56 4.99 0.66 2290 7.25 4.78 0.66 2386
32 24 8.44 4.56 0.54 2193 8.13 4.39 0.54 2314 7.94 4.29 0.54 2386 7.69 4.15 0.54 2506
32 26 8.69 3.65 0.42 2314 8.44 3.55 0.42 2434 8.32 3.49 0.42 2506 8.06 3.39 0.42 2579

INDOOR

DB(:)

INDOOR

WB(:)

OUTDOOR DB(:)

21 2725 30

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

CAPACITY : 6.3(kW) SHF : 0.64 INPUT : 2410(W)

PERFORMANCE DATA COOL operation

MSH-GA60VB : MUH-GA60VB (230V)

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

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

20

PERFORMANCE DATA COOL operation

MSH-GA60VB : MUH-GA60VB (230V)

CAPACITY : 6.3(kW) SHF : 0.64 INPUT : 2410(W)

INDOOR

DB(:)

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

INDOOR

WB(:)

21 18 6.17 2.84 0.46 2362 5.67 2.61 0.46 2506 5.45 2.51 0.46 2555
21 20 6.49 2.21 0.34 2458 6.05 2.06 0.34 2579 5.83 1.98 0.34 2651
22 18 6.17 3.09 0.50 2362 5.67 2.84 0.50 2506 5.45 2.72 0.50 2555
22 20 6.49 2.47 0.38 2458 6.05 2.30 0.38 2579 5.83 2.21 0.38 2651
22 22 6.87 1.79 0.26 2555 6.43 1.67 0.26 2699 6.21 1.61 0.26 2747
23 18 6.17 3.33 0.54 2362 5.67 3.06 0.54 2506 5.45 2.94 0.54 2555
23 20 6.49 2.73 0.42 2458 6.05 2.54 0.42 2579 5.83 2.45 0.42 2651
23 22 6.87 2.06 0.30 2555 6.43 1.93 0.30 2699 6.21 1.86 0.30 2747
24 18 6.17 3.58 0.58 2362 5.67 3.29 0.58 2506 5.45 3.16 0.58 2555
24 20 6.49 2.98 0.46 2458 6.05 2.78 0.46 2579 5.83 2.68 0.46 2651
24 22 6.87 2.33 0.34 2555 6.43 2.18 0.34 2699 6.21 2.11 0.34 2747
24 24 7.25 1.59 0.22 2651 6.80 1.50 0.22 2772 6.62 1.46 0.22 2832
25 18 6.17 3.83 0.62 2362 5.67 3.52 0.62 2506 5.45 3.38 0.62 2555
25 20 6.49 3.24 0.50 2458 6.05 3.02 0.50 2579 5.83 2.91 0.50 2651
25 22 6.87 2.61 0.38 2555 6.43 2.44 0.38 2699 6.21 2.36 0.38 2747
25 24 7.25 1.88 0.26 2651 6.80 1.77 0.26 2772 6.62 1.72 0.26 2832
26 18 6.17 4.07 0.66 2362 5.67 3.74 0.66 2506 5.45 3.60 0.66 2555
26 20 6.49 3.50 0.54 2458 6.05 3.27 0.54 2579 5.83 3.15 0.54 2651
26 22 6.87 2.88 0.42 2555 6.43 2.70 0.42 2699 6.21 2.61 0.42 2747
26 24 7.25 2.17 0.30 2651 6.80 2.04 0.30 2772 6.62 1.98 0.30 2832
26 26 7.62 1.37 0.18 2747 7.18 1.29 0.18 2868 6.96 1.25 0.18 2928
27 18 6.17 4.32 0.70 2362 5.67 3.97 0.70 2506 5.45 3.81 0.70 2555
27 20 6.49 3.76 0.58 2458 6.05 3.51 0.58 2579 5.83 3.38 0.58 2651
27 22 6.87 3.16 0.46 2555 6.43 2.96 0.46 2699 6.21 2.85 0.46 2747
27 24 7.25 2.46 0.34 2651 6.80 2.31 0.34 2772 6.62 2.25 0.34 2832
27 26 7.62 1.68 0.22 2747 7.18 1.58 0.22 2868 6.96 1.53 0.22 2928
28 18 6.17 4.57 0.74 2362 5.67 4.20 0.74 2506 5.45 4.03 0.74 2555
28 20 6.49 4.02 0.62 2458 6.05 3.75 0.62 2579 5.83 3.61 0.62 2651
28 22 6.87 3.43 0.50 2555 6.43 3.21 0.50 2699 6.21 3.10 0.50 2747
28 24 7.25 2.75 0.38 2651 6.80 2.59 0.38 2772 6.62 2.51 0.38 2832
28 26 7.62 1.98 0.26 2747 7.18 1.87 0.26 2868 6.96 1.81 0.26 2928
29 18 6.17 4.82 0.78 2362 5.67 4.42 0.78 2506 5.45 4.25 0.78 2555
29 20 6.49 4.28 0.66 2458 6.05 3.99 0.66 2579 5.83 3.85 0.66 2651
29 22 6.87 3.71 0.54 2555 6.43 3.47 0.54 2699 6.21 3.35 0.54 2747
29 24 7.25 3.04 0.42 2651 6.80 2.86 0.42 2772 6.62 2.78 0.42 2832
29 26 7.62 2.29 0.30 2747 7.18 2.15 0.30 2868 6.96 2.09 0.30 2928
30 18 6.17 5.06 0.82 2362 5.67 4.65 0.82 2506 5.45 4.47 0.82 2555
30 20 6.49 4.54 0.70 2458 6.05 4.23 0.70 2579 5.83 4.08 0.70 2651
30 22 6.87 3.98 0.58 2555 6.43 3.73 0.58 2699 6.21 3.60 0.58 2747
30 24 7.25 3.33 0.46 2651 6.80 3.13 0.46 2772 6.62 3.04 0.46 2832
30 26 7.62 2.59 0.34 2747 7.18 2.44 0.34 2868 6.96 2.37 0.34 2928
31 18 6.17 5.31 0.86 2362 5.67 4.88 0.86 2506 5.45 4.69 0.86 2555
31 20 6.49 4.80 0.74 2458 6.05 4.48 0.74 2579 5.83 4.31 0.74 2651
31 22 6.87 4.26 0.62 2555 6.43 3.98 0.62 2699 6.21 3.85 0.62 2747
31 24 7.25 3.62 0.50 2651 6.80 3.40 0.50 2772 6.62 3.31 0.50 2832
31 26 7.62 2.90 0.38 2747 7.18 2.73 0.38 2868 6.96 2.65 0.38 2928
32 18 6.17 5.56 0.90 2362 5.67 5.10 0.90 2506 5.45 4.90 0.90 2555
32 20 6.49 5.06 0.78 2458 6.05 4.72 0.78 2579 5.83 4.55 0.78 2651
32 22 6.87 4.53 0.66 2555 6.43 4.24 0.66 2699 6.21 4.10 0.66 2747
32 24 7.25 3.91 0.54 2651 6.80 3.67 0.54 2772 6.62 3.57 0.54 2832
32 26 7.62 3.20 0.42 2747 7.18 3.02 0.42 2868 6.96 2.92 0.42 2928

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 INPUT

35 4340

OUTDOOR DB(:)

21

21 18 9.99 4.39 0.44 2608 9.56 4.21 0.44 2738 9.18 4.04 0.44 2869 8.84 3.89 0.44 2999
21 20 10.41 3.33 0.32 2738 9.99 3.20 0.32 2901 9.69 3.10 0.32 2967 9.35 2.99 0.32 3097
22 18 9.99 4.79 0.48 2608 9.56 4.59 0.48 2738 9.18 4.41 0.48 2869 8.84 4.24 0.48 2999
22 20 10.41 3.75 0.36 2738 9.99 3.60 0.36 2901 9.69 3.49 0.36 2967 9.35 3.37 0.36 3097
22 22 10.84 2.60 0.24 2836 10.46 2.51 0.24 3016 10.20 2.45 0.24 3097 9.78 2.35 0.24 3227
23 18 9.99 5.19 0.52 2608 9.56 4.97 0.52 2738 9.18 4.77 0.52 2869 8.84 4.60 0.52 2999
23 20 10.41 4.17 0.40 2738 9.99 4.00 0.40 2901 9.69 3.88 0.40 2967 9.35 3.74 0.40 3097
23 22 10.84 3.03 0.28 2836 10.46 2.93 0.28 3016 10.20 2.86 0.28 3097 9.78 2.74 0.28 3227
24 18 9.99 5.59 0.56 2608 9.56 5.36 0.56 2738 9.18 5.14 0.56 2869 8.84 4.95 0.56 2999
24 20 10.41 4.58 0.44 2738 9.99 4.39 0.44 2901 9.69 4.26 0.44 2967 9.35 4.11 0.44 3097
24 22 10.84 3.47 0.32 2836 10.46 3.35 0.32 3016 10.20 3.26 0.32 3097 9.78 3.13 0.32 3227
24 24 11.39 2.28 0.20 2967 10.97 2.19 0.20 3130 10.71 2.14 0.20 3227 10.37 2.07 0.20 3390
25 18 9.99 5.99 0.60 2608 9.56 5.74 0.60 2738 9.18 5.51 0.60 2869 8.84 5.30 0.60 2999
25 20 10.41 5.00 0.48 2738 9.99 4.79 0.48 2901 9.69 4.65 0.48 2967 9.35 4.49 0.48 3097
25 22 10.84 3.90 0.36 2836 10.46 3.76 0.36 3016 10.20 3.67 0.36 3097 9.78 3.52 0.36 3227
25 24 11.39 2.73 0.24 2967 10.97 2.63 0.24 3130 10.71 2.57 0.24 3227 10.37 2.49 0.24 3390
26 18 9.99 6.39 0.64 2608 9.56 6.12 0.64 2738 9.18 5.88 0.64 2869 8.84 5.66 0.64 2999
26 20 10.41 5.41 0.52 2738 9.99 5.19 0.52 2901 9.69 5.04 0.52 2967 9.35 4.86 0.52 3097
26 22 10.84 4.34 0.40 2836 10.46 4.18 0.40 3016 10.20 4.08 0.40 3097 9.78 3.91 0.40 3227
26 24 11.39 3.19 0.28 2967 10.97 3.07 0.28 3130 10.71 3.00 0.28 3227 10.37 2.90 0.28 3390
26 26 11.73 1.88 0.16 3130 11.39 1.82 0.16 3293 11.22 1.80 0.16 3390 10.88 1.74 0.16 3488
27 18 9.99 6.79 0.68 2608 9.56 6.50 0.68 2738 9.18 6.24 0.68 2869 8.84 6.01 0.68 2999
27 20 10.41 5.83 0.56 2738 9.99 5.59 0.56 2901 9.69 5.43 0.56 2967 9.35 5.24 0.56 3097
27 22 10.84 4.77 0.44 2836 10.46 4.60 0.44 3016 10.20 4.49 0.44 3097 9.78 4.30 0.44 3227
27 24 11.39 3.64 0.32 2967 10.97 3.51 0.32 3130 10.71 3.43 0.32 3227 10.37 3.32 0.32 3390
27 26 11.73 2.35 0.20 3130 11.39 2.28 0.20 3293 11.22 2.24 0.20 3390 10.88 2.18 0.20 3488
28 18 9.99 7.19 0.72 2608 9.56 6.89 0.72 2738 9.18 6.61 0.72 2869 8.84 6.36 0.72 2999
28 20 10.41 6.25 0.60 2738 9.99 5.99 0.60 2901 9.69 5.81 0.60 2967 9.35 5.61 0.60 3097
28 22 10.84 5.20 0.48 2836 10.46 5.02 0.48 3016 10.20 4.90 0.48 3097 9.78 4.69 0.48 3227
28 24 11.39 4.10 0.36 2967 10.97 3.95 0.36 3130 10.71 3.86 0.36 3227 10.37 3.73 0.36 3390
28 26 11.73 2.82 0.24 3130 11.39 2.73 0.24 3293 11.22 2.69 0.24 3390 10.88 2.61 0.24 3488
29 18 9.99 7.59 0.76 2608 9.56 7.27 0.76 2738 9.18 6.98 0.76 2869 8.84 6.72 0.76 2999
29 20 10.41 6.66 0.64 2738 9.99 6.39 0.64 2901 9.69 6.20 0.64 2967 9.35 5.98 0.64 3097
29 22 10.84 5.64 0.52 2836 10.46 5.44 0.52 3016 10.20 5.30 0.52 3097 9.78 5.08 0.52 3227
29 24 11.39 4.56 0.40 2967 10.97 4.39 0.40 3130 10.71 4.28 0.40 3227 10.37 4.15 0.40 3390
29 26 11.73 3.28 0.28 3130 11.39 3.19 0.28 3293 11.22 3.14 0.28 3390 10.88 3.05 0.28 3488
30 18 9.99 7.99 0.80 2608 9.56 7.65 0.80 2738 9.18 7.34 0.80 2869 8.84 7.07 0.80 2999
30 20 10.41 7.08 0.68 2738 9.99 6.79 0.68 2901 9.69 6.59 0.68 2967 9.35 6.36 0.68 3097
30 22 10.84 6.07 0.56 2836 10.46 5.85 0.56 3016 10.20 5.71 0.56 3097 9.78 5.47 0.56 3227
30 24 11.39 5.01 0.44 2967 10.97 4.82 0.44 3130 10.71 4.71 0.44 3227 10.37 4.56 0.44 3390
30 26 11.73 3.75 0.32 3130 11.39 3.64 0.32 3293 11.22 3.59 0.32 3390 10.88 3.48 0.32 3488
31 18 9.99 8.39 0.84 2608 9.56 8.03 0.84 2738 9.18 7.71 0.84 2869 8.84 7.43 0.84 2999
31 20 10.41 7.50 0.72 2738 9.99 7.19 0.72 2901 9.69 6.98 0.72 2967 9.35 6.73 0.72 3097
31 22 10.84 6.50 0.60 2836 10.46 6.27 0.60 3016 10.20 6.12 0.60 3097 9.78 5.87 0.60 3227
31 24 11.39 5.47 0.48 2967 10.97 5.26 0.48 3130 10.71 5.14 0.48 3227 10.37 4.98 0.48 3390
31 26 11.73 4.22 0.36 3130 11.39 4.10 0.36 3293 11.22 4.04 0.36 3390 10.88 3.92 0.36 3488
32 18 9.99 8.79 0.88 2608 9.56 8.42 0.88 2738 9.18 8.08 0.88 2869 8.84 7.78 0.88 2999
32 20 10.41 7.91 0.76 2738 9.99 7.59 0.76 2901 9.69 7.36 0.76 2967 9.35 7.11 0.76 3097
32 22 10.84 6.94 0.64 2836 10.46 6.69 0.64 3016 10.20 6.53 0.64 3097 9.78 6.26 0.64 3227
32 24 11.39 5.92 0.52 2967 10.97 5.70 0.52 3130 10.71 5.57 0.52 3227 10.37 5.39 0.52 3390
32 26 11.73 4.69 0.40 3130 11.39 4.56 0.40 3293 11.22 4.49 0.40 3390 10.88 4.35 0.40 3488

INDOOR

DB(:)

INDOOR

WB(:)

OUTDOOR DB(:)

21 2725 30

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

CAPACITY : 8.5(kW) SHF : 0.62 INPUT : 3260(W)

PERFORMANCE DATA COOL operation

MSH-GA80VB : MUH-GA80VB (230V)

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

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

22

PERFORMANCE DATA COOL operation

MSH-GA80VB : MUH-GA80VB (230V)

CAPACITY : 8.5(kW) SHF : 0.62 INPUT : 3260(W)

OUTDOOR DB(:)

INDOOR

DB(:)

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

INDOOR

WB(:)

21 18 8.33 3.67 0.44 3195 7.65 3.37 0.44 3390 7.35 3.24 0.44 3456
21 20 8.76 2.80 0.32 3325 8.16 2.61 0.32 3488 7.86 2.52 0.32 3586
22 18 8.33 4.00 0.48 3195 7.65 3.67 0.48 3390 7.35 3.53 0.48 3456
22 20 8.76 3.15 0.36 3325 8.16 2.94 0.36 3488 7.86 2.83 0.36 3586
22 22 9.27 2.22 0.24 3456 8.67 2.08 0.24 3651 8.37 2.01 0.24 3716
23 18 8.33 4.33 0.52 3195 7.65 3.98 0.52 3390 7.35 3.82 0.52 3456
23 20 8.76 3.50 0.40 3325 8.16 3.26 0.40 3488 7.86 3.15 0.40 3586
23 22 9.27 2.59 0.28 3456 8.67 2.43 0.28 3651 8.37 2.34 0.28 3716
24 18 8.33 4.66 0.56 3195 7.65 4.28 0.56 3390 7.35 4.12 0.56 3456
24 20 8.76 3.85 0.44 3325 8.16 3.59 0.44 3488 7.86 3.46 0.44 3586
24 22 9.27 2.96 0.32 3456 8.67 2.77 0.32 3651 8.37 2.68 0.32 3716
24 24 9.78 1.96 0.20 3586 9.18 1.84 0.20 3749 8.93 1.79 0.20 3831
25 18 8.33 5.00 0.60 3195 7.65 4.59 0.60 3390 7.35 4.41 0.60 3456
25 20 8.76 4.20 0.48 3325 8.16 3.92 0.48 3488 7.86 3.77 0.48 3586
25 22 9.27 3.34 0.36 3456 8.67 3.12 0.36 3651 8.37 3.01 0.36 3716
25 24 9.78 2.35 0.24 3586 9.18 2.20 0.24 3749 8.93 2.14 0.24 3831
26 18 8.33 5.33 0.64 3195 7.65 4.90 0.64 3390 7.35 4.71 0.64 3456
26 20 8.76 4.55 0.52 3325 8.16 4.24 0.52 3488 7.86 4.09 0.52 3586
26 22 9.27 3.71 0.40 3456 8.67 3.47 0.40 3651 8.37 3.35 0.40 3716
26 24 9.78 2.74 0.28 3586 9.18 2.57 0.28 3749 8.93 2.50 0.28 3831
26 26 10.29 1.65 0.16 3716 9.69 1.55 0.16 3879 9.39 1.50 0.16 3961
27 18 8.33 5.66 0.68 3195 7.65 5.20 0.68 3390 7.35 5.00 0.68 3456
27 20 8.76 4.90 0.56 3325 8.16 4.57 0.56 3488 7.86 4.40 0.56 3586
27 22 9.27 4.08 0.44 3456 8.67 3.81 0.44 3651 8.37 3.68 0.44 3716
27 24 9.78 3.13 0.32 3586 9.18 2.94 0.32 3749 8.93 2.86 0.32 3831
27 26 10.29 2.06 0.20 3716 9.69 1.94 0.20 3879 9.39 1.88 0.20 3961
28 18 8.33 6.00 0.72 3195 7.65 5.51 0.72 3390 7.35 5.29 0.72 3456
28 20 8.76 5.25 0.60 3325 8.16 4.90 0.60 3488 7.86 4.72 0.60 3586
28 22 9.27 4.45 0.48 3456 8.67 4.16 0.48 3651 8.37 4.02 0.48 3716
28 24 9.78 3.52 0.36 3586 9.18 3.30 0.36 3749 8.93 3.21 0.36 3831
28 26 10.29 2.47 0.24 3716 9.69 2.33 0.24 3879 9.39 2.25 0.24 3961
29 18 8.33 6.33 0.76 3195 7.65 5.81 0.76 3390 7.35 5.59 0.76 3456
29 20 8.76 5.60 0.64 3325 8.16 5.22 0.64 3488 7.86 5.03 0.64 3586
29 22 9.27 4.82 0.52 3456 8.67 4.51 0.52 3651 8.37 4.35 0.52 3716
29 24 9.78 3.91 0.40 3586 9.18 3.67 0.40 3749 8.93 3.57 0.40 3831
29 26 10.29 2.88 0.28 3716 9.69 2.71 0.28 3879 9.39 2.63 0.28 3961
30 18 8.33 6.66 0.80 3195 7.65 6.12 0.80 3390 7.35 5.88 0.80 3456
30 20 8.76 5.95 0.68 3325 8.16 5.55 0.68 3488 7.86 5.35 0.68 3586
30 22 9.27 5.19 0.56 3456 8.67 4.86 0.56 3651 8.37 4.69 0.56 3716
30 24 9.78 4.30 0.44 3586 9.18 4.04 0.44 3749 8.93 3.93 0.44 3831
30 26 10.29 3.29 0.32 3716 9.69 3.10 0.32 3879 9.39 3.01 0.32 3961
31 18 8.33 7.00 0.84 3195 7.65 6.43 0.84 3390 7.35 6.18 0.84 3456
31 20 8.76 6.30 0.72 3325 8.16 5.88 0.72 3488 7.86 5.66 0.72 3586
31 22 9.27 5.56 0.60 3456 8.67 5.20 0.60 3651 8.37 5.02 0.60 3716
31 24 9.78 4.69 0.48 3586 9.18 4.41 0.48 3749 8.93 4.28 0.48 3831
31 26 10.29 3.70 0.36 3716 9.69 3.49 0.36 3879 9.39 3.38 0.36 3961
32 18 8.33 7.33 0.88 3195 7.65 6.73 0.88 3390 7.35 6.47 0.88 3456
32 20 8.76 6.65 0.76 3325 8.16 6.20 0.76 3488 7.86 5.98 0.76 3586
32 22 9.27 5.93 0.64 3456 8.67 5.55 0.64 3651 8.37 5.36 0.64 3716
32 24 9.78 5.08 0.52 3586 9.18 4.77 0.52 3749 8.93 4.64 0.52 3831
32 26 10.29 4.11 0.40 3716 9.69 3.88 0.40 3879 9.39 3.76 0.40 3961

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 INPUT

35 4340

23

OUTDOOR WB(:)

INDOOR

-10 -5 0 5 10 15 20

DB(:)

Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT

CAPACITY : 5.2(kW)

INPUT : 1610(W)

15
21
26

3.28

3.12

2.81

1047
1127
1208

3.95

3.74

3.48

1256
1336
1417

4.63

4.42

4.11

1417
1481
1562

5.30

5.04

4.78

1530
1594
1674

5.98

5.72

5.46

1626
1674
1755

6.60

6.34

6.08

1674
1723
1803

7.28

6.99

6.76

1707
1787
1852

PERFORMANCE DATA HEAT operation

OUTDOOR WB(:)

INDOOR

-10 -5 0 5 10 15 20

DB(:)

Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT

CAPACITY : 7.2(kW)

INPUT : 2480(W)

15
21
26

4.54

4.32

3.89

1612
1736
1860

5.47

5.18

4.82

1934
2058
2182

6.41

6.12

5.69

2182
2282
2406

7.34

6.98

6.62

2356
2455
2579

8.28

7.92

7.56

2505
2579
2703

9.14

8.78

8.42

2579
2654
2778

10.08

9.68

9.36

2629
2753
2852

OUTDOOR WB(:)

INDOOR

-10 -5

0 5 10 15 20

DB(:)

Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT

CAPACITY : 9.4(kW)

INPUT : 3430(W)

15
21
26

5.92

5.64

5.08

2230
2401
2573

7.14

6.77

6.30

2675
2847
3018

8.37

7.99

7.43

3018
3156
3327

9.59

9.12

8.65

3259
3396
3567

10.81

10.34

9.87

3464
3567
3739

11.94

11.47

11.00

3567
3670
3842

13.16

12.64

12.22

3636
3807
3945

MSH-GA50VB : MUH-GA50VB (230V)

NOTE Q :Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb temperature

MSH-GA60VB : MUH-GA60VB (230V)

NOTE Q :Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb temperature

MSH-GA80VB : MUH-GA80VB (230V)

NOTE Q :Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb temperature

24

9

Jumper wire

JRF

JRG

Model Change point

Defrost interval time changes from 40 minutes to 15 minutes.
Defrost start temperature changes from -3: to 0:. (MUH-GA50VB)

Defrost start temperature does not change.(-3.0:)(MUH-GA60/GA80VB)
Defrost finish temperature changes from 3: to 10:.(MUH-GA50VB)

Defrost finish temperature changes from 3: to 15:.(MUH-GA60VB)
Defrost finish temperature changes from 13: to 15:.(MUH-GA80VB)

MUH-GA50VB
MUH-GA60VB
MUH-GA80VB

Lead wiring

Housing point

SERVICE FUNCTIONS

MUH-GA50VB MUH-GA60VB MUH-GA80VB

9-1. COMPULSORY DEFROSTING MODE FOR SERVICE

By short circuit of the connector JPDS and JPSG(MUH-GA50VB)/ JPG1 and R871(MUH-GA60/GA80VB) on the outdoor
deicer P.C. board, defrosting mode can be accomplished regardless of the defrost interval restriction. (Refer to 10-5.)
Defrost thermistor RT61 must read below -3°C.

9-2. CHANGE IN DEFROST SETTING

<JRF> When the JRF wire of the deicer P.C. board is cut, the defrost interval time will be changed.
<JRG> When the JRG wire of the deicer P.C. board is cut, the defrost temperature will be changed.

(Refer to 10-5.)

10

TROUBLESHOOTING

MUH-GA50VB MUH-GA60VB MUH-GA80VB

10-1. Cautions on troubleshooting

1. Before troubleshooting, check the following:

(1) Check the power supply voltage.
(2) Check the indoor/outdoor connecting wire for mis-wiring.

2. Take care the following during servicing.

(1) Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and then after con-

firming the horizontal vane is closed, turn OFF the breaker and / or disconnect the power plug.

(2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the electronic

control P.C. board.

(3) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the com-

ponents.

(4) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.

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 how many times the abnormality indication is flashing on and off before starting service work.
(2) Before servicing check that the connector and terminal are connected properly.
(3) 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 discolouration.
(4) When troubleshooting, refer to 10-2.

25

Start

Indoor unit
operates.
Outdoor unit
doesn't
operate.

Indoor unit
doesn't receive
the signal from
remote controller.

Indoor unit
operates.
Outdoor unit
doesn't operate
normally.

OPERATION INDICATOR
lamp on the indoor unit is
flashing on and off.

Outdoor unit
operates only
in Test Run
operation.

Outdoor unit
doesn't
operate
even in
Test Run
operation.

Indoor unit
operates, when
the EMERGENCY
OPERATION
switch is pressed.

Indoor unit
doesn't operate,
when the
EMERGENCY
OPERATION
switch is pressed.

Check room
temperature
thermistor.
Refer to
"Test point
diagram and
voltage".

Refer to
10-4.A
"Check of
outdoor unit".

Refer to
"Check of
remote controller
and receiver
P.C. board".

Flash on and
off at 0.5­second
intervals
Cause:
Indoor/
Outdoor unit

• Mis-wiring

Refer to
10-4.D
"How to
check
mis-wiring
(When
outdoor unit
doesn't
work)".

2-time flash
Cause:
Indoor unit

• Trouble of
room temp­ erature/
indoor coil
thermistor

3-time flash
Cause:
Indoor unit

• Trouble of
indoor fan
motor

Check room
temperature
thermistor
and indoor
coil thermis­tor.
Refer to
"Test point
diagram and
voltage".

Refer to
"Check of
indoor fan
motor".

4-time flash
Cause:
Indoor unit

• Trouble of
indoor unit
control
system

Replace the
indoor
electronic
control
P.C. board.

1. Check indoor /
outdoor
connecting wire.

2. Refer to
"Check of indoor
electronic control
P.C. board".

Outdoor unit
doesn't
stop even
if indoor unit
stops.

Unit doesn't
operate
normal
operation in
COOL or
HEAT mode.

Refer to
10-4.B
"Check of
outdoor unit".

Refer to
10-4.C
"Check of
R.V. coil".

Refer to indoor unit service manual.

6-time flash
Cause:
Outdoor unit

• Trouble of
thermistor
in outdoor
unit

7-time flash
Cause:
Outdoor unit

• Trouble of
outdoor
control
system

Refer to
10-4.F
"Check of
outdoor
thermistor".

Replace the
deicer
P.C. board.

10-time flash
Cause:
Outdoor unit

MUH-GA80VB

• Trouble of
low discharge
temperature
protection

MUH-GA80VB

Refer to
10-4.E

"Check of
LEV".

10-2. Instruction of troubleshooting

26

10-3. Trouble criterion of main parts

Part name FigureCheck method and criterion

Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)

Compressor
(MC)
INNER
PROTECTOR
160i 5: OPEN
90i10: CLOSE

Normal

MUH-GA50VB

Terminal

C – R

C – S

1.59 " ~ 1.95 "

2.65 " ~ 3.24 "

MUH-GA60VB

0.71 " ~ 0.87 "

1.45 " ~ 1.77 "

MUH-GA80VB

0.56 " ~ 0.71 "

1.43 " ~ 1.76 "

Abnormal

Open or

short-circuit

R.V. coil(21S4)

LEV(Expansion valve)

MUH-GA80VB

Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)

Normal

2.673 k" ~ 3.268 k"

Abnormal

Open or short-circuit

Color of lead wire

WHT – RED
RED – ORN

YLW – BRN

BRN – BLU

Abnormal

Open or

short-circuit

Normal

41.0 " ~ 49.0 "

Measure the resistance with a tester.
(Part temperature : –10˚C ~ 40˚C)

Measure the resistance with a tester.
(Part temperature –10˚C ~ 40˚C)

Discharge temperature
thermistor(RT62)

MUH-GA80VB

Ambient temperature
thermistor(RT63)

MUH-GA80VB

Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)

Normal

120 k" ~ 800k"

Abnormal

Open or short-circuit

Normal

5 k" ~ 60 k"

Abnormal

Open or short-circuit

Measure the resistance with a tester.
(Part temperature –10˚C ~ 40˚C)

Normal

5 k" ~ 60 k"

Abnormal

Open or short-circuit

Defrost thermistor
(RT61)

w Reference value

MUH-GA50VB MUH-GA60VB MUH-GA80VB

Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)

Color of

lead wire

WHT – BLK

BLK – RED
BLK – YLW

YLW – RED

Open or

short-circuit

70.4 " ~ 85.5 "

73.6 " ~ 89.3 "
–
–

61.0 " ~ 74.0 "

82.5 " ~ 100.2 "
–
–

55.4 " ~ 67.7 "
–

49.3 " ~ 60.3 "

22.9 " ~ 28.0 "

Normal

Abnormal

Outdoor fan motor(MF)

MUH-GA50VB
MUH-GA60VB

INNER
PROTECTOR
130i 5: OPEN
( 83i15: CLOSE

w

)

MUH-GA80VB

INNER
PROTECTOR
135i 5: OPEN
( 83i15: CLOSE

w

)

REDORN WHT

YLW

BLK

MAIN

AUX.1AUX.2

C

P

P

~

BLK

R

MAIN

AUX.

RED

S

C

WHT

MAIN

AUX.

BLK

MUH-GA50VB
MUH-GA60VB

MUH-GA80VB

RED

WHTORN

P

LEV

WHT

6

RED1

ORN4

YLW5

BRN2

BLU3

:INNER PROTECTOR

P

MUH-GA50VB MUH-GA60VB MUH-GA80VB

27

Yes

Compressor
doesn't operate.

Yes

Yes

Is there 230V AC between 3 on the
compressor contactor (52C) and N
on the outdoor terminal block (TB1)?

Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch.
3-minute time delay works.
Test run operation operates for 30 minutes.

Outdoor fan motor
doesn't operate.

No

Rectify the indoor and
outdoor connecting wire.

Rectify the connecting wire.

Check the compressor and compressor
capacitor. Refer to page 27.

Yes

Is there 230V AC between 4 on the
compressor contactor (52C) and
TAB20 on the deicer P.C. board?

Is there 230V AC between L–N on
the outdoor terminal block (TB1)?

Replace the
deicer P.C. board.

Replace the
deicer P.C.
board.

No

No

Yes

Yes

No

Check the outdoor fan motor.
Refer to page 27.

Is there 230V AC between 4 on the
compressor contactor (52C) and
TAB 20 on the deicer P.C. board?

Replace the
deicer P.C. board.

No

Yes

Rectify the indoor and
outdoor connecting wire.

Rectify the connecting wire.

Is there 230V AC between L–N on
the outdoor terminal block (TB1)?

No

No

+

–

Is there 5V DC between J205 –J101 on
the deicer P.C. board?

+

–

Is there 5V DC between J205 –J101 on
the deicer P.C. board?

w Refer to 10-5.

w

w

w

w

10-4. Troubleshoot flow

Compressor and/or outdoor fan motor doesn’t operate.

AA

Check of outdoor unit

MUH-GA50VB

28

MUH-GA60VB
MUH-GA80VB

Turn ON the power supply.

Is there 230V AC to

L-N on the

between
outdoor terminal block

Yes

No

Check the outdoor power supply

?

Compressor
does not operate.

Is there 5V DC between
J101 - J401 on the deicer

+

P.C. board? w

Operate the unit in
COOL or HEAT mode by
pressing the EMERGENCY
OPERATION switch.

3minutes after the power
supply turns ON, is there
230V AC between A1-A2 on
the compressor contactor
(52C)?

Is there 230V AC between
2/T1 on the compressor
contactor(52C) and N on the
outdoor terminal block?

Check the compressor.
Refer to page 27.

and connection of wiring.

Yes

Yes

Yes

Is there 230V AC between

No

CN730 1-3 on the deicer
P.C. board? w

Replace the
deicer P.C. board.

No

No

Replace the
deicer P.C. board.

Is there 230V AC between
1/L1 on the compressor
contactor(52C) and N on the
outdoor terminal block?

Replace the compressor
contactor(52C).

Yes

Yes

No

Rectify the connecting
wire.

No

Rectify the connecting
wire.

Outdoor fan motor
does not operate.

Is there 5V DC between
J101 - J401 on the deicer

+

P.C. board? w

Yes

Operate the unit in
COOL or HEAT mode by
pressing the EMERGENCY
OPERATION switch.

Is there 230V AC between
CN711 2-3 (MUH-GA60VB)/
CN711 1-3 or 2-3
(MUH-GA80VB) on the
deicer P.C. board? w

Yes

Check the outdoor fan
motor. Refer to page 27.

Is there 230V AC CN730

No

1-3 on the deicer P.C.
board? w

Replace the
deicer P.C. board.

No

Replace the
deicer P.C. board.

Yes

No

Rectify the connecting
wire.

w Refer to 10-5.

29

After 30 seconds,
does compressor stop?

No

Yes

Is there 230V AC between
A1-A2 on the compressor
contactor (52C)?

Replace the
deicer P.C. board.

Yes

1 Turn OFF the power supply.
2 After 30 seconds, turn ON the power supply again.
3 Operate the unit in COOL or HEAT mode by

pressing the EMERGENCY OPERATION switch.
4 Operate the unit for 1 minute or more and stop it by
pressing the EMERGENCY OPERATION switch again.

Ok

No

After 30 seconds, does
outdoor fan motor stop?

Replace the
deicer P.C. board.

Yes

Ok

No

Is there 230V AC between
2/T1 on the compressor
contactor (52C) and N on the

outdoor terminal block?

Yes

Replace the
compressor contactor(52C).

No

Rectify the connecting

wire.
After 3 minutes, does the unit
operate in HEAT mode?

Ok

No

Replace the
deicer P.C. board.

Yes

Yes

No

Replace the R.V. coil.

Disconnect the TAB52 on the deicer P.C. board. (MUH-GA60/GA80VB)
Turn ON the power supply and operate the indoor unit in COOL mode
by pressing the EMERGENCY OPERATION switch.

Is there 230V AC between
CN7211 – 2 (MUH-GA50VB)/
CN7211 – 3 (MUH-GA60/GA80VB)
on the deicer P.C. board?

Compressor and/or outdoor fan motor doesn’t stop.

BB

Check of outdoor unit

MUH-GA50VB

Turn OFF the power supply.
After 1 minute, turn ON
power supply again.

Is there 230V AC between 3 on the

Does compressor stop?

Yes

OK

No

compressor contactor (52C) and N on the
outdoor terminal block (TB1)?

Replace the
deicer P.C. board.

Yes

No

Rectify the connecting wire.

MUH-GA60VB
MUH-GA80VB

Does outdoor fan motor stop?

Yes

OK

No

Replace the
deicer P.C. board.

Unit operates HEAT mode even if it is set to COOL mode.

Check of R.V. coil

C

w First, measure the resistance of R.V. coil to confirm it is disconnected or is not short-circuit.

30

1. Turn OFF the power supply (indoor/ outdoor unit) and disconnect indoor/outdoor
connecting wire on indoor side.

2. Short-circuit terminal block N-3 by lead wire.

3.

Turn ON the power supply (indoor unit) and press once EMERGENCY OPERATION switch.

During EMERGENCY OPERATION, is there
10V DC between both ends of R601on the
deicer P.C. board? (Refer to 10-5.)
(By tester, the stylus is between 5 ~10V.)

Refer to indoor unit
service manual.

Start

No

No

Is there 20V DC between both ends of
R132 on the indoor electronic control P.C.
board ?
( By tester, the stylus is between 0 ~ 20V. )

• Turn ON the power supply. (indoor/ outdoor unit)

• Press once EMERGENCY OPERATION switch.

Is this mis-wiring, poor contact,
or wire disconnection?

Make them sure.

Replace the indoor electronic
control P.C. board.

Is there 230V AC between L-N
on the outdoor terminal block?

No

Check the outdoor power supply
and connection of wiring.

Is there 5V DC between J205 + -J101 - (MUH-GA50VB)/
J101 + -J401 - (MUH-GA60/GA80VB) on the deicer P.C.
board?(Refer to 10-5.)

Yes

No

Replace the deicer P.C. board.

Yes

No

Make the wiring between CN730
on the deicer P.C. board and
outdoor terminal block correct.
(Refer to 10-5.)

Replace the deicer P.C. board.

Yes

Yes

Yes

After 3 minutes, mis-wiring is indicated
(0.5-second ON, 0.5-second OFF)
on OPERATION INDICATOR
lamp on indoor unit.w

w Short circuit of JPG and JPS on the indoor electronic control
P.C. board enables self -check to be displayed in 3 seconds.

• Turn OFF the power supply. (indoor unit)

• Connect ON indoor/ outdoor connecting
wire.

Turn ON the power supply. (outdoor unit)

After 3 minutes, does the unit
operate in COOL mode?

OK

Yes

Yes

No

Replace the
deicer P.C. board

No

Replace the R.V. coil.

Disconnect the TAB52 on the deicer P.C. board. (MUH-GA60/GA80VB)
Turn ON the power supply and operate the indoor unit in HEAT mode
by pressing the EMERGENCY OPERATION switch.

Is there 230V AC between
CN7211 – 2 (MUH-GA50VB)/
CN7211 – 3 (MUH-GA60/GA80VB)
on the deicer P.C. board?

Unit operates COOL mode even if it is set to HEAT mode.

Check of R.V. coil

C

w First, measure the resistance of R.V. coil to confirm it is disconnected or is not short-circuit.

When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second.
Outdoor unit doesn’t operate.

How to check mis-wiring

D

31

Measure
resistance
between CN 661
1 and 2.

Measure
resistance
between CN 662
3 and 4.

No

Yes

Replace the
thermistor.

Measure
resistance
between CN 662
1 and 2.

Connect CN661 and
CN662.
Turn ON the power
supply and press
the EMERGENCY
OPERATION
switch.

Does the resistancs
of thermistor have
the characteristics
on 10-5.?

No

Yes

Does the unit operate
10 minutes or more?

Replace the deicer P.C.

board.

Ok W.

W It is thought defective contact of the connector.

Turn OFF the
power supply.

<MUH-GA80VB>

Discharge temperature
thermistor(RT62)

<MUH-GA80VB>

Ambient temperature
thermistor(RT63)

Defrost thermistor(RT61)

Replace the
LEV.

With remote controller set toward the indoor unit, press
OPERATE/ STOP(ON/ OFF) button and confirm one
beep tone.

LEV operates in full-opening
direction.

Is LEV properly fixed to
the expansion valve?

Ok

Do you hear the expansion
valve "click,click·······"?
Do you feel the expansion
valve vibrate on touching it?

Does the resistance of LEV have
the characterictics on page 27?

No

Yes

Yes

Yes

No

No

Properly fix the LEV to the
expansion valve.

Replace the
deicer P.C. board.

NOTE : After check of LEV, do the undermentioned operations.

1. Turn OFF the power supply and turn ON again.

2. Press the RESET button on the remote controller.

Turn ON the power supply.
1 During pressing both the OPERATION SELECT
button and the TOO COOL button on the

remote controller at the same time,
press the RESET button.
2 First, release the RESET button.
And release the other two buttons since all LCD
in operation display section of the remote controller
is displayed after 3 seconds.

AMPM

CLOCK

˚C

AMPM

When OPERATION INDICATOR lamp flashes 10-time.
Heating/ Cooling doesn't operate.

Check of LEV (Expansion valve)

E

MUH-GA80VB

When OPERATION INDICATOR lamp flashes 6-time.
Thermistors in the outdoor unit are abnormal.

F

Check of outdoor thermistor

w Disconnect the connectors CN661 and/ or CN662 from the deicer P.C. board.

(Check the characteristics of each thermistor.)

32

10-5. Test point diagram and voltage

MUH-GA50VB
Outdoor deicer P.C. board

CN711
Outdoor fan motor
230V AC

}

CN721
R.V. coil

230V AC

}

5V DC
J205
J101

+

--

(Refer to
10-4.A or
10-4.D.)

Power supply input

230V AC

}

NR61
Varistor

F61
Fuse

2A/250V

R601

+

5~10V DC

}

--

Defrost interval time
short pin
(JPDS, JPSG)
(Refer to 9-1.)

Jumper wire for

}

change in defrost
setting
(JRF,JRG)

}

CN661 1-2
Defrost thermistor RT61 (Refer to 10-4.F)

(Refer to 9-2.)

12V DC
J204

+

J101

--

33

MUH-GA60VB

Temperature(:)

Discharge temperature thermistor(RT62)

Resistance(k")

0 102030405060708090100110120

0

100

200

300

400

500

600

700

800

900

Defrost thermistor (RT61)

Ambient temperature thermistor (RT63)

-20 -10 0 10 20 30 40

0

10

20

30

40

50

60

70

80

90

100

Temperature(:)

Resistance(k")

MUH-GA80VB

Outdoor deicer P.C. board

CN661 1-2
Defrost ther­mistor (RT61)

(Refer to
10-4.F)

Defrost
interval
time short
pin(JPG1,
R871)
(Refer to
9-1.)

(Refer to
10-4.A or
10-4.D.)

+

J101

}

5V

DC

J401

<MUH-GA80VB>
CN662 1-2

Discharge temper­ature thermistor
(RT62)

(Refer to 10-4.F)

Jumper wire for
change in defrost
setting (JRF, JRG)
(Refer to 9-2.)

<MUH-GA80VB>
CN662 3-4

Ambient temperature
thermistor (RT63)
(Refer to 10-4.F)

34

<MUH-GA80VB>
LEV
connector
(CN724)

R601 10V DC
(Refer to 10-4.D.)

Fan motor
connector
(CN711)

+

}

Varistor
(NR62)

R.V. coil

}

(CN721)

+

12V DC

}

Fuse

3.15A / 250V

Varistor
(NR61)

CN7301-3

}

230V AC
(Refer to
10-4.A or

10-4.D.)

11

(1) Slide the sleeve and check if there is a locking lever or not.

(2) The terminal with this connector has the
locking mechanism.

1Slide the sleeve.
2Pull the terminal while

pushing the locking
lever.

1Hold the sleeve, and
pull out the terminal
slowly.

The terminal which has the locking mechanism can be detached as shown below.
There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism.
The terminal without locking mechanism can be detached by pulling it out.
Check the shape of the terminal before detaching.

<"Terminal with locking mechanism" Detaching points>

Connector

Sleeve

Locking lever

DISASSEMBLY INSTRUCTIONS

11-1. MUH-GA50VB

OPERATING PROCEDURE

1. Removing the cabinet

(1) Remove the screws of the cabinet.
(2) Hold the down of the cabinet on the both side and remove

the cabinet.

Photo 2

Screws of
the cabinet

2. Removing the deicer P.C. board

(1) Remove the service panel and the cabinet.
(2) Disconnect all the connectors and the terminals on the

deicer P.C. board.

(3) Remove the deicer P.C. board.

Photo 1

Service
panel

Photo 3

Screw of the
relay panel

PHOTOS

Deicer
P.C. board

Screws
of the
cabinet

Terminal blocks

35

Relay panel

Screw of the
relay panel

OPERATING PROCEDURE

3. Removing the propeller and the outdoor fan motor

(1) Remove the cabinet. (Refer to 1.)
(2) Remove the propeller nut and the propeller.

NOTE : Loose the propeller in the rotating direction for

removal.

When attaching the propeller, align the mark on the
propeller 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.

(3) Remove the clamp of outdoor fan motor lead wire and

disconnect the outdoor fan motor connector.
(4) Remove the screws fixing the outdoor fan motor.
(5) Remove the outdoor fan motor.

Photo 4

Propeller

PHOTOS

Set screws of the
outdoor fan motor

Lead clamps

4. Removing the compressor

(1) Remove the cabinet. (Refer to 1.)
(2) Remove the relay panel.
(3) Remove the soundproof felt.
(4) Remove the terminal cover on the compressor.
(5) Disconnect lead wires from the compressor.
(6) Recover gas from the refrigerant circuit.
(7) Disconnect the welded part of the discharge pipe.
(8) Disconnect the welded part of the suction pipe.
(9) Remove nuts fixing the compressor.

)

(

Remove the compressor.

10

NOTE

● Before using a burner, reclaim gas from the pipes until the
pressure gauge shows 0 kg/cm

● Use the burner under the condition that gas can be recovered
even when the inner pressure rises by heat.

2

(0 MPa).

Propeller
nut

Photo 5

Compressor

Set screws of the
outdoor fan motor

Discharge
pipe

Terminal cover

Outdoor
fan motor

Suction
pipe

36

Compressor set nuts

11-2. MUH-GA60VB MUH-GA80VB

NOTE : These photos are MUH-GA80VB.

MUH-GA60VB is almost the same as MUH-GA80VB.

OPERATING PROCEDURE

1.Removing the cabinet

(1) Remove the screws of the service panel.
(2) Remove the screws of the top panel.
(3) Remove the screw of the valve cover.
(4) Remove the service panel.
(5) Remove the top panel.
(6) Remove the valve cover.
(7) Remove the screws of the front panel.
(8) Remove the front panel.
(9) Remove the screws of the back panel.

(10)

Remove the back panel.

Photo 3

Screw of the motor support

Photo 1

Screws
of the
cabinet

Photo 2

PHOTOS

Screw of the top panel

Screws of the cabinet

Screw of the service panel

Screws
of the
back
panel

Set screws of the back panel

2. Removing the deicer P.C. board

(1) Remove the service panel and the cabinet.
(2) Disconnect all the connectors and the terminals on the

deicer P.C. board.

(3) Remove the deicer P.C. board.

Screws
of the
front
panel

Photo 4

Deicer P.C. board

Screws
of the
top
panel

Screw
of the
valve
cover

Terminal

blocks

37

Screws
of the
relay
panel

Screws of the
relay panel

OPERATING PROCEDURE

PHOTOS

3. Removing the propeller and the outdoor fan motor

(1) Remove the cabinet. (Refer to 1.)
(2) Remove the propeller nut and the propeller.

NOTE : Loose the propeller in the rotating direction for

removal.

When attaching the propeller, align the mark on the
propeller 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.

(3) Remove the clamp of outdoor fan motor lead wire and

disconnect the outdoor fan motor connector.
(4) Remove the screws fixing the outdoor fan motor.
(5) Remove the outdoor fan motor.

Photo 5

Set screws of the
outdoor fan motor

Propeller

nut

Propeller

Set screws of the outdoor fan motor

4. Removing the compressor

(1) Remove the cabinet. (Refer to 1.)
(2) Remove the relay panel.
(3) Remove the soundproof felt.
(4) Remove the terminal cover on the compressor.
(5) Disconnect lead wires from the compressor.
(6) Recover gas from the refrigerant circuit.
(7) Disconnect the welded part of the discharge pipe.
(8) Disconnect the welded part of the suction pipe.
(9) Remove nuts fixing the compressor.

)

(

Remove the compressor.

10

NOTE

● Before using a burner, reclaim gas from the pipes until the
pressure gauge shows 0 kg/cm

● Use the burner under the condition that gas can be recovered
even when the inner pressure rises by heat.

2

(0 MPa).

Photo 6

Discharge pipe

Suction pipe

Terminal cover

Compressor set nuts

38

12

Symbol

in Wiring

Diagram

Q'ty/unit

MUH-GA50VB -

Remarks

Part No. Part Name

E1

E02 817 233
E02 817 232
E02 817 521
E02 643 630
E02 141 501
E02 139 515
E02 075 506
E02 817 900
E02 817 290
E02 817 661
E02 820 662
E02 817 245
E02 891 961
E02 888 353
E02 816 301
E02 890 383
E02 891 451
E02 817 374
E02 821 374
E02 820 310
E02 817 009
E02 139 936
E02 340 936
E02 414 936
E02 095 382
E02 821 490
E02 891 642
E02 820 385

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21

22

23
24
25
26

BACK PANEL
CABINET
GRILLE
OUTDOOR HEAT EXCHANGER
PROPELLER
MOTOR SUPPORT
COMPRESSOR RUBBER SET
COMPRESSOR
BASE
STOP VALVE(GAS)
STOP VALVE(LIQUID)
SERVICE PANEL
4-WAY VALVE
COMPRESSOR CAPACITOR
OUTDOOR FAN MOTOR
SURGE ABSORBER
DEICER P.C. BOARD
TERMINAL BLOCK
TERMINAL BLOCK
DEFROST THERMISTOR
HANDLE
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
FUSE
R.V. COIL
CHECK VALVE
VARISTOR

MC

C1

MF

DSAR

TB1
TB2

RT61

F61

21S4

NR61

3RUBBERS/SET
RN196VHSHT

{12.7
{ 6.35

40+/440V AC
RA6V50 -

3P
2P

{3.0✕{1.6✕750
{3.0✕{1.6✕450
{3.0✕{1.6✕300

250V / 2A

NO.

1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1

PARTS LIST (non-RoHS compliant)

MUH-GA50VB
12-1. OUTDOOR UNIT STRUCTURAL PARTS,

ELECTRICAL PARTS AND FUNCTIONAL PARTS

21

20

19

18

1

2

Part numbers that are circled are not shown in the illustration.

4

653

39

7

15

17

16

14

13

12

11
10

8

9

PARTS LIST (non-RoHS compliant)

MUH-GA60VB
12-2. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

24252627

1

2

3

4
5

6

7

8

23

22

21

20
19

18

17

9

10

11

12

16

1513 14

40

MUH-GA60VB -

E1

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

NO.

Part Name

E02 819 297
E02 821 630
E02 892 301
E02 214 501
E02 821 290
E02 819 232
E02 819 009
E02 819 521
E02 891 961
E02 B36 490
E02 821 310
E02 527 506
E02 821 900
E02 819 661
E02 821 662
E02 819 650
E02 819 245
E02 890 383
E02 821 374
E02 817 374
E02 895 351
E02 892 451
E07 012 340
E02 889 353
E02 819 233
E02 817 009
E02 726 515
E02 127 382
E02 336 385
E02 891 642
E02 892 936

1

2

3

4

5

6

7

8

9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

TOP PANEL
OUTDOOR HEAT EXCHANGER
OUTDOOR FAN MOTOR
PROPELLER
BASE
CABINET
HANDLE
FAN GUARD
4-WAY VALVE
R.V. COIL
DEFROST THERMISTOR
COMPRESSOR RUBBER SET
COMPRESSOR
STOP VALVE(GAS)
STOP VALVE(LIQUID)
VALVE COVER
SERVICE PANEL
SURGE ABSORBER
TERMINAL BLOCK
TERMINAL BLOCK
OUTDOOR FAN CAPACITOR
DEICER P.C. BOARD
COMPRESSOR CONTACTOR
COMPRESSOR CAPACITOR
BACK PANEL(OUT)
HANDLE
MOTOR SUPPORT
FUSE
VARISTOR
CHECK VALVE
CAPILLARY TUBE

RA6V85-

4RUBBERS/SET
NN29VBAHT

{15.88
{6.35

2P
3P

3.0+/440V AC

55+/440V AC

250V/3.15A

{3.0x{2.0x750

MF

21S4
RT61

MC

DSAR

TB2
TB1

C2

52C

C1

F61

NR61

1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2

PARTS LIST (non-RoHS compliant)

MUH-GA60VB
12-2. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

41

PARTS LIST (non-RoHS compliant)

MUH-GA80VB
12-3. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

25262728

1

2
3
4

5
6

7

8
9

24

23
22

21
20

19

2

18

10

11

12

13

17

1614 15

42

MUH-GA80VB -

E1

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

NO.

Part Name

E02 819 297
E02 819 309
E02 822 630
E02 819 301
E02 214 501
E02 819 290
E02 819 232
E02 819 009
E02 819 521
E02 891 961
E02 B36 490
E02 821 310
E02 527 506
E02 819 900
E02 819 661
E02 822 662
E02 819 650
E02 819 245
E02 890 383
E02 821 374
E02 817 374
E02 890 351
E02 893 451
E02 890 340
E02 890 353
E02 819 233
E02 817 009
E02 726 515
E02 819 640
E02 819 493
E02 127 382
E02 336 385
E02 214 386
E02 822 936

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

TOP PANEL
THERMISTOR
OUTDOOR HEAT EXCHANGER
OUTDOOR FAN MOTOR
PROPELLER
BASE
CABINET
HANDLE
FAN GUARD
4-WAY VALVE
R.V. COIL
DEFROST THERMISTOR
COMPRESSOR RUBBER SET
COMPRESSOR
STOP VALVE(GAS)
STOP VALVE(LIQUID)
VALVE COVER
SERVICE PANEL
SURGE ABSORBER
TERMINAL BLOCK
TERMINAL BLOCK
OUTDOOR FAN CAPACITOR
DEICER P.C. BOARD
COMPRESSOR CONTACTOR
COMPRESSOR CAPACITOR
BACK PANEL(OUT)
HANDLE
MOTOR SUPPORT
EXPANSION VALVE
EXPANSION VALVE COIL
FUSE
VARISTOR
CZ SURGE ABSORBER
CAPILLARY TUBE(TAPER PIPE)

DISCHARGE, AMBIENT

RA6V75-

4RUBBERS/SET
NN37VAAHT

{15.88
{9.52

2P
3P

4.0+/440V AC

60+/440V AC

250V/3.15A

{3.6x{2.4x50

RT62, RT63

MF

21S4
RT61

MC

DSAR

TB2
TB1

C2

52C

C1

LEV

F61

NR61

CZ

1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

PARTS LIST (non-RoHS compliant)

MUH-GA80VB
12-3. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

43

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

NO.

Part Name

MUH-GA50VB

-

E1

MUH-GA60VB

-

E1

E1

MUH-GA80VB

-

E02 817 704
E02 444 705
E02 444 706

1
2

DRAIN SOCKET
DRAIN CAP
DRAIN CAP

[33
[16

1
2
1

1
2

1
2

PARTS LIST (non-RoHS compliant)

MUH-GA50VB
MUH-GA60VB
MUH-GA80VB
12-4. ACCESSORY

1

2

44

13

Symbol

in Wiring

Diagram

Q'ty/unit

MUH-GA50VB -

Remarks

Part No. Part Name

E1

E12 817 233
E12 817 232
E12 817 521
E12 643 630
E12 141 501
E12 139 515
E12 075 506
E12 817 900
E12 817 290
E12 817 661
E12 820 662
E12 817 245
E12 891 961
E12 888 353
E12 816 301
E12 890 383
E12 891 451
E12 817 374
E12 821 374
E12 820 310
E12 817 009
E12 139 936
E12 340 936
E12 414 936
E12 095 382
E12 821 490
E12 891 642
E12 820 385

1

2

3

4

5

6

7

8

9
10
11
12
13
14
15
16
17
18
19
20
21

22

23
24
25
26

G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G

BACK PANEL
CABINET
GRILLE
OUTDOOR HEAT EXCHANGER
PROPELLER
MOTOR SUPPORT
COMPRESSOR RUBBER SET
COMPRESSOR
BASE
STOP VALVE(GAS)
STOP VALVE(LIQUID)
SERVICE PANEL
4-WAY VALVE
COMPRESSOR CAPACITOR
OUTDOOR FAN MOTOR
SURGE ABSORBER
DEICER P.C. BOARD
TERMINAL BLOCK
TERMINAL BLOCK
DEFROST THERMISTOR
HANDLE
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
FUSE
R.V. COIL
CHECK VALVE
VARISTOR

MC

C1

MF

DSAR

TB1
TB2

RT61

F61

21S4

NR61

3RUBBERS/SET
RN196VHSHT

{12.7
{ 6.35

40+/440V AC
RA6V50 -

3P
2P

{3.0✕{1.6✕750
{3.0✕{1.6✕450
{3.0✕{1.6✕300

250V / 2A

NO.

1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1

RoHS

RoHS PARTS LIST (RoHS compliant)

MUH-GA50VB
13-1. OUTDOOR UNIT STRUCTURAL PARTS,

ELECTRICAL PARTS AND FUNCTIONAL PARTS

21

20

19

18

1

2

Part numbers that are circled are not shown in the illustration.

4

653

45

7

15

17

16

14

13

12

11
10

8

9

RoHS PARTS LIST (RoHS compliant)

MUH-GA60VB
13-2. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

24252627

1

2

3

4
5

6

7

8

23

22

21

20
19

18

17

9

10

11

12

16

1513 14

46

RoHS PARTS LIST (RoHS compliant)

MUH-GA60VB -

E1

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

NO.

Part Name

E12 819 297
E12 821 630
E12 892 301
E12 214 501
E12 821 290
E12 819 232
E12 819 009
E12 819 521
E12 891 961
E12 B36 490
E12 821 310
E12 527 506
E12 821 900
E12 819 661
E12 821 662
E12 819 650
E12 819 245
E12 890 383
E12 821 374
E12 817 374
E12 895 351
E12 892 451
E17 012 340
E12 889 353
E12 819 233
E12 817 009
E12 726 515
E12 A49 382
E12 336 385
E12 891 642
E12 892 936

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G

TOP PANEL
OUTDOOR HEAT EXCHANGER
OUTDOOR FAN MOTOR
PROPELLER
BASE
CABINET
HANDLE
FAN GUARD
4-WAY VALVE
R.V. COIL
DEFROST THERMISTOR
COMPRESSOR RUBBER SET
COMPRESSOR
STOP VALVE(GAS)
STOP VALVE(LIQUID)
VALVE COVER
SERVICE PANEL
SURGE ABSORBER
TERMINAL BLOCK
TERMINAL BLOCK
OUTDOOR FAN CAPACITOR
DEICER P.C. BOARD
COMPRESSOR CONTACTOR
COMPRESSOR CAPACITOR
BACK PANEL(OUT)
HANDLE
MOTOR SUPPORT
FUSE
VARISTOR
CHECK VALVE
CAPILLARY TUBE

RA6V85-

4RUBBERS/SET
NN29VBAHT

{15.88
{6.35

2P
3P

3.0+/440V AC

55+/440V AC

T3.15AL250V

{3.0x{2.0x750

MF

21S4

RT61

MC

DSAR

TB2
TB1

C2

52C

C1

F61

NR61

1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2

RoHS

MUH-GA60VB
13-2. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

47

RoHS PARTS LIST (RoHS compliant)

MUH-GA80VB
13-3. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

25262728

1

2
3
4

5
6

7

8
9

24

23
22

21
20

19

2

18

10

11

12

13

17

1614 15

48

RoHS PARTS LIST (RoHS compliant)

MUH-GA80VB -

E1

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

NO.

Part Name

E12 819 297
E12 819 309
E12 822 630
E12 819 301
E12 214 501
E12 819 290
E12 819 232
E12 819 009
E12 819 521
E12 891 961
E12 B36 490
E12 821 310
E12 527 506
E12 819 900
E12 819 661
E12 822 662
E12 819 650
E12 819 245
E12 890 383
E12 821 374
E12 817 374
E12 890 351
E12 893 451
E12 890 340
E12 890 353
E12 819 233
E12 817 009
E12 726 515
E12 819 640
E12 819 493
E12 A49 382
E12 336 385
E12 214 386
E12 822 936

1

2

3

4

5

6

7

8

9

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34

G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G

TOP PANEL
THERMISTOR
OUTDOOR HEAT EXCHANGER
OUTDOOR FAN MOTOR
PROPELLER
BASE
CABINET
HANDLE
FAN GUARD
4-WAY VALVE
R.V. COIL
DEFROST THERMISTOR
COMPRESSOR RUBBER SET
COMPRESSOR
STOP VALVE(GAS)
STOP VALVE(LIQUID)
VALVE COVER
SERVICE PANEL
SURGE ABSORBER
TERMINAL BLOCK
TERMINAL BLOCK
OUTDOOR FAN CAPACITOR
DEICER P.C. BOARD
COMPRESSOR CONTACTOR
COMPRESSOR CAPACITOR
BACK PANEL(OUT)
HANDLE
MOTOR SUPPORT
EXPANSION VALVE
EXPANSION VALVE COIL
FUSE
VARISTOR
CZ SURGE ABSORBER
CAPILLARY TUBE(TAPER PIPE)

DISCHARGE, AMBIENT

RA6V75-

4RUBBERS/SET
NN37VAAHT

{15.88
{9.52

2P
3P

4.0+/440V AC

60+/440V AC

T3.15AL250V

{3.6x{2.4x50

RT62, RT63

MF

21S4
RT61

MC

DSAR

TB2
TB1

C2

52C

C1

LEV

F61

NR61

CZ

1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

RoHS

MUH-GA80VB
13-3. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

49

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

NO.

Part Name

MUH-GA50VB

-

E1

MUH-GA60VB

-

E1

E1

MUH-GA80VB

-

E12 817 704
E12 444 705
E12 444 706

12G

G
G

DRAIN SOCKET
DRAIN CAP
DRAIN CAP

[33 2PCS/SET
[16

1
2
1

1
2

1
2

RoHS

RoHS PARTS LIST (RoHS compliant)

MUH-GA50VB
MUH-GA60VB
MUH-GA80VB
13-4. ACCESSORY

1

2

50

51

HEAD OFFICE: TOKYO BLDG.,2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

CC

Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Distributed in Jun. 2006. No.OB368 REVISED EDITION-A 6
Distributed in Oct. 2004. No.OB368 6
Made in Japan

New publication, effective Jun. 2006
Specifications subject to change without notice.