Mitsubishi Electric MUCFH-A18WV-E1, MUCFH-A24WV-E1 Service Manual

SERVICE MANUAL

FLOOR AND CEILING TYPE AIR CONDITIONERS

HFC

utilized

R410A

Wireless type
Models

Revision B:

● Part number of 4-WAY VALVE has been
corrected.

Please void OB337 REVISED EDITION-A.

No. OB337

REVISED EDITION-B

MUCFH-A18WV ­MUCFH-A24WV -

Indication of model name

MUCFH-A18WV -

E1

E1

E1

CONTENTS

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

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

3. SPECIFICATION·················································5

4. NOISE CRITERIA CURVES·······························6

5. OUTLINES AND DIMENSIONS·························7

6. WIRING DIAGRAM ············································8

7. REFRIGERANT SYSTEM DIAGRAM················9

8. PERFORMANCE CURVES······························10

9. ACTUA TOR CONTROL····································18

10. SERVICE FUNCTIONS·····································18

11. TROUBLESHOOTING······································19

12. DISASSEMBLY INSTRUCTIONS·····················29

13. PARTS LIST······················································33

NOTE:

•This service manual describes technical data of outdoor units.
As for indoor units MCFH-A18WV- and MCFH-A24WV- , refer to the

service manual OB336.

E1E1

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 Destruction Parameter : based on CFC-11
w2 :Global Warmth Parameter : based on CO

2

Revision A:

•Power input of SPECIFICATION has been modified.

Revision B:

•Part number of 4-WAY VALVE has been corrected.

Model Revise point

MUCFH-A18WV - E1

MUCFH-A24WV - E1

1

TECHNICAL CHANGES

13-1. No.13

13-3. No.9

MUH-A18WV - ➔ MUCFH-A18WV -

1. Capillary tube has been changed.

2. Refrigerant filling capacity has been changed. (1.75kg ➔ 1.85kg)

MUH-A24WV - ➔ MUCFH-A24WV -

1. Capillary tube has been changed.

2. Refrigerant filling capacity has been changed. (2.15kg ➔ 2.20kg)

Part Name

4-WAY VALVE

4-WAY VALVE

E1E1

E1E1

E02 679 961

E02 679 961

Part Number

Correct Incorrect

E02 891 961

E02 891 961

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

ff

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

[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

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)

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

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

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"

MUCFH-A18WV -

E1

Single phase

230V, 50Hz

2,196

15

94
37

0.39

RN196VHSHT

1,300
C-R 1.80
C-S 3.00

RA6V50-OG

WHT-BLK 116

BLK-RED 111

850o605o290

47
52

828

1

1.85

520 (NEO22)

33.18

Cooling

4.8

2.4

8.01

1,730

7.62

2.65

Heating

5.0
—

8.38

1,810

7.99

2.65

MUCFH-A24WV -

E1

Single phase

230V, 50Hz

2,760

25

98
74

0.58

NN29VBAHT

1,900
C-R 0.80
C-S 1.64

RA6V85-AB

WHT-BLK 63 BLK-YLW 30

YLW-RED 63

840o850o330

74
53

730

1

2.20

1,200 (NEO22)

33.18

Cooling

6.0

3.1

10.51
2,370

9.93

2.45

Heating

6.8
—

11.71
2,640

11.13

2.50

Electrical

data

Compressor

Fan

motor

Special

remarks

Coefficient of performance(C.O.P)

Capacity

PART NAMES AND FUNCTIONS

OUTDOOR UNIT

MUCFH-A18WV -

ACCESSORIES

Item

Drain socket
Drain cap [33
Drain cap [16

E1

Air inlet

Piping
Drain hose

Air outlet

Drain outlet

MUCFH-A18WV-

1
2
1

E1

MUCFH-A24WV -

Q'ty

MUCFH-A24WV-

1
6
–

E1

Air inlet

(back and side)

Air outlet

E1

3

NOTE: Test conditions are based on ISO 5151.

SPECIFICATION

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

5

4

NOISE CRITERIA CURVES

MUCFH-A18WV -

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

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

90

80

70

60

50

40

30

APPROXIMATE

20

THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

10

63 125 250 500 1000 2000 4000 8000

E1

SPL(dB

FAN SPEED

High

BAND CENTER FREQUENCIES, Hz

(A))

52

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

MUCFH-A24WV -

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

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

90

80

70

60

50

40

30

APPROXIMATE

20

THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

10

63 125 250 500 1000 2000 4000 8000

E1

SPL(dB

FAN SPEED

High

BAND CENTER FREQUENCIES, Hz

(A))

53

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OUTDOORUNIT

1m

MICROPHONE

6

5

OUTLINES AND DIMENSIONS

OUTDOOR UNIT

MUCFH-A18WV -

Drainage
hole [16.2

35

90

248

Air in

Drainage
3holes [33

605

292

20

MUCFH-A24WV -

299

66

51

34

E1

355

350

E1

515

Air in

Air out

183

500
850

20

40

50

290

310

30

157

100

74

REQUIRED SPACE

100mm or more

REQUIRED SPACE

100mm or more

345

161

500mm or more

Service panel

Liquid refrigerant
pipe joint

Refregerant pipe
(flared) [6.35

35-

30-

Gas refregerant
pipe joint

Refregerant pipe
(flared) [12.7

Open as a rule
500mm or more if
the front and both
sides are open

100mm or more

100mm or more

100mm or more
200mm or more if
there are obstacles
to both sides

Unit: mm

350mm or more

330

850

430

121

500

840

360

Open as a rule
500mm or more if the back,

80

both sides and top are open

155

90

7

198

350mm or more

Service panel

Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) [6.35

30-

35-

Gas refrigerant
pipe joint
Refrigerant pipe
(flared) [15.88

6

WIRING DIAGRAM

MUCFH-A18WV -

OUTDOOR UNIT

TO
INDOOR UNIT
CONNECTING
12V

CIRCUIT BREAKER

POWER SUPPLY

~ /N

50Hz

230V

SYMBOL

COMPRESSOR CAPACITOR

C1

C65

DSAR

F61

NOTES:

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

MC

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

E1

NAME

: Connector

MODEL WIRING DIAGRAM

TB2

3

N

TB1

L

BRN

N

BLU

PE

GRN/YLW

SYMBOL

MF

NR61

RT61

SR61,SR62

T61

RED

BLK
BRN

RT61

1

CN661

2
3

CN730

DSAR

F61

TAB20

T61

52C

4

BLU

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

21S4

CN721

SR62

SR61

NR61

3

DEICER P.C.BOARD

RED

WHT

C1

BLK

SYMBOL

TB1,TB2

21S4

52C

MF

WHT

BLK

RED

ORN

4

1

CN711

1
2
3

C65

C

MC

S

TERMINAL BLOCK
R.V. COIL
COMPRESSOR CONTACTOR

23

WHT

BLK

RED

R

NAME

MUCFH-A24WV -

OUTDOOR UNIT

CIRCUIT BREAKER

~ /N 230V 50Hz

POWER SUPPLY

12V

TO INDOOR UNIT CONNECTING

TB1

L
N

TB2

3

N

NOTES:

PE

GRN/YLW

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

BRN

BLU

E1

DSAR

BRN

BLU

RT61

BRN

BLU

3

CN661

X52X62

DEICER
P.C. BOARD

4

52C

MODEL WIRING DIAGRAM

MF

YLW

WHT

ORN

RED

BLK

3456

21

RED

ORN

COM

COM

CN730

F61

RED

BLK

8

CN721

NO

TAB52

NO

S

C2

1
2
3

7
5
3
1

MC

21S4

C

R

BLU

RED

BLU

YLW

123

SR61

T61

NR61

WHT

A1 A2

52C

BLK

WHT

CN711

X62

X52

C1

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

REFRIGERANT SYSTEM DIAGRAM7

MUCFH-A18WV -

OUTDOOR UNIT

Refrigerant pipe [12.7
(with heat insulator)

Refrigerant pipe[6.35
(with heat insulator)

E1

Flared connection

Flared connection

Stop valve
(with service port)

Capillary tube

[2.5o[0.6o1,000

Receiver

Stop
valve

Strainer

4- way valve

Capillary tube

[3.0o[1.6o650

#100

Check valve

Oil separator
#100

Compressor

Capillary tube

Refrigerant flow in cooling
Refrigerant flow in heating

Defrost
thermistor
RT61

R.V. coil
Heating ON
Cooling OFF

[3.0o[1.6o500

Unit:mm

Outdoor
heat
exchanger

Capillary tube

[3.0o[1.6o750

(2 pcs)

MUCFH-A24WV -

OUTDOOR UNIT

Refrigerant pipe [15.88
(with heat insulator)

Refrigerant pipe [6.35
(with heat insulator)

E1

Flared connection

Flared connection

Stop valve
(with service port)

Muffler

Receiver

Stop valve

Strainer

4- way valve

Capillary tube

[3.0X[2.0X400

#100

Check valve

Muffler

#100

Compressor

Capillary tube
[3.0X[2.0X800

Refrigerant flow in cooling
Refrigerant flow in heating

Outdoor
heat
exchanger

Defrost
thermistor
RT61

R.V. coil
Heating ON
Cooling OFF

9

A: Refrigerant piping Max.length 25m

W Max. Height

difference

10m

MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE

Model

MUCFH-A18WV ­MUCFH-A24WV -

wIt does not matter which unit is higher.

Refrigerant piping

MAX. length :mm

A

E1
E1

25

Piping size O.D. : mm

Gas

{12.7

{15.88

ADDITIONAL REFRIGERANT CHARGE (R410A : g)

If pipe length exceeds 7m, additional refrigerant (R410A) charge is required.

Models

MUCFH-A18WV ­MUCFH-A24WV -

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

E1
E1

Outdoor unit:

precharged

1,850
2,200

7m

0

Refrigerant piping length (one way)

10m

60

15m

160

20m

260

Liquid
{6.35

25m

360

8

PERFORMANCE CURVES

MUCFH-A18WV - MUCFH-A24WV -

The standard data contained in these specifications apply only to the operation of the air conditioner under normal condition.
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

COOLING
(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

Indoor air wet/dry-bulb temperature difference on the left side of the chart on 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.

E1E1

HEATING
(1) Indoor intake air dry-bulb temperature : ˚CDB
(2) Indoor outlet air dry-bulb temperature : ˚CDB
(3) Outdoor intake air wet-bulb temperature : ˚CWB
(4) Total input : W

10

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 inlet 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 inlet.

Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of the 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.

Air in

INDOOR UNIT

Air out

11.1

10.2

9.2

8.3

7.5

6.6

FRONT VIEW

14.7

13.4

12.1

10.9

9.7

8.5

Wet and dry-bulb
thermometers

OUTDOOR UNIT

Wet and dry-bulb
thermometers

BACK VIEW

MCFH-A18WV- E1

MUCFH-A18WV- E1

MUCFH-A24WV- E1

MCFH-A24WV- E1

31.8

23.4

29.3

21.6

26.9

19.8

24.4

18.0

22.0

16.2

19.5

14.4

17.1

12.6

14.7

10.8

MUCFH-A18WV- E1

MCFH-A24WV- E1

MUCFH-A24WV- E1

MCFH-A18WV- E1

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

COOL operation

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

Dry Bulb temperature (˚C)

20
25
30

Relative humidity (%)

50
60
70

11

1.2

1.1

1.0

0.9

0.8

0.7

0.6

12

11

10

9

8

7

6

15 18 20 25 30 32 35(:)

50 60 70 (%)

Ambient temperature (:)

Ambient humidity (%)

Outdoor low pressure

11

10

9

8

7

6

5

15 18 20 25 30 32 35(:)

50 60 70 (%)

Ambient temperature (:)

Ambient humidity (%)

Outdoor unit current (A)

230V

230V

(MPa [Gauge])

(kgf/F [Gauge])

2 Air flow should be set at MAX.
3 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])

Outdoor low pressure

11

10

9

8

7

6

(MPa [Gauge])

1.1

1.0

0.9

0.8

0.7

0.6

MUCFH-A18WV-

MUCFH-A24WV-

230V

E1

E1

12

11

10

9

8

Outdoor unit current (A)

7

230V

0.5

5

15 18 20 25 30 32 35(:)

50 60 70 (%)

Ambient temperature (:)

Ambient humidity (%)

HEAT operation

Condition Indoor : Dry bulb temerature 20.0: Outdoor : Dry bulb temerature 7,15,20:

Wet bulb temerature 14.5:

MUCFH-A18WV-

11

10

9

Outdoor unit current (A)

8

5 7 10 15 20 25(:)

50 60 70 (%)

Ambient temperature (:)

Ambient humidity (%)

6

15 18 20 25 30 32 35(:)

50 60 70 (%)

Ambient temperature (:)

Ambient humidity (%)

Wet bulb temerature 6,12,14.5:

E1

230V

MUCFH-A24WV-

16

15

14

13

12

Outdoor unit current (A)

11

5 7 10 15 20 25(:)

12

Ambient temperature (:)

Ambient humidity (%)

E1

230V

50 60 70 (%)

PERFORMANCE DATA COOL operation(230V)

MCFH-A18WV - : MUCFH-A18WV -

CAPACITY :4.8(KW) SHF :0.65 INPUT :1810(W)

INDOOR INDOOR

DB(:) WB(:)

21 18 5.64 2.65 0.47 1448 5.40 2.54 0.47 1520 5.18 2.44 0.47 1593 4.99 2.35 0.47 1665
21 20 5.88 2.06 0.35 1520 5.64 1.97 0.35 1611 5.47 1.92 0.35 1647 5.28 1.85 0.35 1720
22 18 5.64 2.88 0.51 1448 5.40 2.75 0.51 1520 5.18 2.64 0.51 1593 4.99 2.55 0.51 1665
22 20 5.88 2.29 0.39 1520 5.64 2.20 0.39 1611 5.47 2.13 0.39 1647 5.28 2.06 0.39 1720
22 22 6.12 1.65 0.27 1575 5.90 1.59 0.27 1674 5.76 1.56 0.27 1720 5.52 1.49 0.27 1792
23 18 5.64 3.10 0.55 1448 5.40 2.97 0.55 1520 5.18 2.85 0.55 1593 4.99 2.75 0.55 1665
23 20 5.88 2.53 0.43 1520 5.64 2.43 0.43 1611 5.47 2.35 0.43 1647 5.28 2.27 0.43 1720
23 22 6.12 1.90 0.31 1575 5.90 1.83 0.31 1674 5.76 1.79 0.31 1720 5.52 1.71 0.31 1792
24 18 5.64 3.33 0.59 1448 5.40 3.19 0.59 1520 5.18 3.06 0.59 1593 4.99 2.95 0.59 1665
24 20 5.88 2.76 0.47 1520 5.64 2.65 0.47 1611 5.47 2.57 0.47 1647 5.28 2.48 0.47 1720
24 22 6.12 2.14 0.35 1575 5.90 2.07 0.35 1674 5.76 2.02 0.35 1720 5.52 1.93 0.35 1792
24 24 6.43 1.48 0.23 1647 6.19 1.42 0.23 1738 6.05 1.39 0.23 1792 5.86 1.35 0.23 1882
25 18 5.64 3.55 0.63 1448 5.40 3.40 0.63 1520 5.18 3.27 0.63 1593 4.99 3.14 0.63 1665
25 20 5.88 3.00 0.51 1520 5.64 2.88 0.51 1611 5.47 2.79 0.51 1647 5.28 2.69 0.51 1720
25 22 6.12 2.39 0.39 1575 5.90 2.30 0.39 1674 5.76 2.25 0.39 1720 5.52 2.15 0.39 1792
25 24 6.43 1.74 0.27 1647 6.19 1.67 0.27 1738 6.05 1.63 0.27 1792 5.86 1.58 0.27 1882
26 18 5.64 3.78 0.67 1448 5.40 3.62 0.67 1520 5.18 3.47 0.67 1593 4.99 3.34 0.67 1665
26 20 5.88 3.23 0.55 1520 5.64 3.10 0.55 1611 5.47 3.01 0.55 1647 5.28 2.90 0.55 1720
26 22 6.12 2.63 0.43 1575 5.90 2.54 0.43 1674 5.76 2.48 0.43 1720 5.52 2.37 0.43 1792
26 24 6.43 1.99 0.31 1647 6.19 1.92 0.31 1738 6.05 1.87 0.31 1792 5.86 1.82 0.31 1882
26 26 6.62 1.26 0.19 1738 6.43 1.22 0.19 1828 6.34 1.20 0.19 1882 6.14 1.17 0.19 1937
27 18 5.64 4.00 0.71 1448 5.40 3.83 0.71 1520 5.18 3.68 0.71 1593 4.99 3.54 0.71 1665
27 20 5.88 3.47 0.59 1520 5.64 3.33 0.59 1611 5.47 3.23 0.59 1647 5.28 3.12 0.59 1720
27 22 6.12 2.88 0.47 1575 5.90 2.77 0.47 1674 5.76 2.71 0.47 1720 5.52 2.59 0.47 1792
27 24 6.43 2.25 0.35 1647 6.19 2.17 0.35 1738 6.05 2.12 0.35 1792 5.86 2.05 0.35 1882
27 26 6.62 1.52 0.23 1738 6.43 1.48 0.23 1828 6.34 1.46 0.23 1882 6.14 1.41 0.23 1937
28 18 5.64 4.23 0.75 1448 5.40 4.05 0.75 1520 5.18 3.89 0.75 1593 4.99 3.74 0.75 1665
28 20 5.88 3.70 0.63 1520 5.64 3.55 0.63 1611 5.47 3.45 0.63 1647 5.28 3.33 0.63 1720
28 22 6.12 3.12 0.51 1575 5.90 3.01 0.51 1674 5.76 2.94 0.51 1720 5.52 2.82 0.51 1792
28 24 6.43 2.51 0.39 1647 6.19 2.41 0.39 1738 6.05 2.36 0.39 1792 5.86 2.28 0.39 1882
28 26 6.62 1.79 0.27 1738 6.43 1.74 0.27 1828 6.34 1.71 0.27 1882 6.14 1.66 0.27 1937
29 18 5.64 4.46 0.79 1448 5.40 4.27 0.79 1520 5.18 4.10 0.79 1593 4.99 3.94 0.79 1665
29 20 5.88 3.94 0.67 1520 5.64 3.78 0.67 1611 5.47 3.67 0.67 1647 5.28 3.54 0.67 1720
29 22 6.12 3.37 0.55 1575 5.90 3.25 0.55 1674 5.76 3.17 0.55 1720 5.52 3.04 0.55 1792
29 24 6.43 2.77 0.43 1647 6.19 2.66 0.43 1738 6.05 2.60 0.43 1792 5.86 2.52 0.43 1882
29 26 6.62 2.05 0.31 1738 6.43 1.99 0.31 1828 6.34 1.96 0.31 1882 6.14 1.90 0.31 1937
30 18 5.64 4.68 0.83 1448 5.40 4.48 0.83 1520 5.18 4.30 0.83 1593 4.99 4.14 0.83 1665
30 20 5.88 4.17 0.71 1520 5.64 4.00 0.71 1611 5.47 3.89 0.71 1647 5.28 3.75 0.71 1720
30 22 6.12 3.61 0.59 1575 5.90 3.48 0.59 1674 5.76 3.40 0.59 1720 5.52 3.26 0.59 1792
30 24 6.43 3.02 0.47 1647 6.19 2.91 0.47 1738 6.05 2.84 0.47 1792 5.86 2.75 0.47 1882
30 26 6.62 2.32 0.35 1738 6.43 2.25 0.35 1828 6.34 2.22 0.35 1882 6.14 2.15 0.35 1937
31 18 5.64 4.91 0.87 1448 5.40 4.70 0.87 1520 5.18 4.51 0.87 1593 4.99 4.34 0.87 1665
31 20 5.88 4.41 0.75 1520 5.64 4.23 0.75 1611 5.47 4.10 0.75 1647 5.28 3.96 0.75 1720
31 22 6.12 3.86 0.63 1575 5.90 3.72 0.63 1674 5.76 3.63 0.63 1720 5.52 3.48 0.63 1792
31 24 6.43 3.28 0.51 1647 6.19 3.16 0.51 1738 6.05 3.08 0.51 1792 5.86 2.99 0.51 1882
31 26 6.62 2.58 0.39 1738 6.43 2.51 0.39 1828 6.34 2.47 0.39 1882 6.14 2.40 0.39 1937
32 18 5.64 5.13 0.91 1448 5.40 4.91 0.91 1520 5.18 4.72 0.91 1593 4.99 4.54 0.91 1665
32 20 5.88 4.65 0.79 1520 5.64 4.46 0.79 1611 5.47 4.32 0.79 1647 5.28 4.17 0.79 1720
32 22 6.12 4.10 0.67 1575 5.90 3.96 0.67 1674 5.76 3.86 0.67 1720 5.52 3.70 0.67 1792
32 24 6.43 3.54 0.55 1647 6.19 3.41 0.55 1738 6.05 3.33 0.55 1792 5.86 3.22 0.55 1882
32 26 6.62 2.85 0.43 1738 6.43 2.77 0.43 1828 6.34 2.72 0.43 1882 6.14 2.64 0.43 1937

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

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

21 25 27 30

E1E1

OUTDOOR DB(:)

13

PERFORMANCE DATA COOL operation(230V)

MCFH-A18WV - : MUCFH-A18WV -

CAPACITY :4.8(KW) SHF :0.65 INPUT :1810(W)

INDOOR INDOOR

DB(:) WB(:)

21 18 4.70 2.21 0.47 1774 4.32 2.03 0.47 1882 4.15 1.95 0.47 1919
21 20 4.94 1.73 0.35 1846 4.61 1.61 0.35 1937 4.44 1.55 0.35 1991
22 18 4.70 2.40 0.51 1774 4.32 2.20 0.51 1882 4.15 2.12 0.51 1919
22 20 4.94 1.93 0.39 1846 4.61 1.80 0.39 1937 4.44 1.73 0.39 1991
22 22 5.23 1.41 0.27 1919 4.90 1.32 0.27 2027 4.73 1.28 0.27 2063
23 18 4.70 2.59 0.55 1774 4.32 2.38 0.55 1882 4.15 2.28 0.55 1919
23 20 4.94 2.13 0.43 1846 4.61 1.98 0.43 1937 4.44 1.91 0.43 1991
23 22 5.23 1.62 0.31 1919 4.90 1.52 0.31 2027 4.73 1.47 0.31 2063
24 18 4.70 2.78 0.59 1774 4.32 2.55 0.59 1882 4.15 2.45 0.59 1919
24 20 4.94 2.32 0.47 1846 4.61 2.17 0.47 1937 4.44 2.09 0.47 1991
24 22 5.23 1.83 0.35 1919 4.90 1.71 0.35 2027 4.73 1.65 0.35 2063
24 24 5.52 1.27 0.23 1991 5.18 1.19 0.23 2082 5.04 1.16 0.23 2127
25 18 4.70 2.96 0.63 1774 4.32 2.72 0.63 1882 4.15 2.62 0.63 1919
25 20 4.94 2.52 0.51 1846 4.61 2.35 0.51 1937 4.44 2.26 0.51 1991
25 22 5.23 2.04 0.39 1919 4.90 1.91 0.39 2027 4.73 1.84 0.39 2063
25 24 5.52 1.49 0.27 1991 5.18 1.40 0.27 2082 5.04 1.36 0.27 2127
26 18 4.70 3.15 0.67 1774 4.32 2.89 0.67 1882 4.15 2.78 0.67 1919
26 20 4.94 2.72 0.55 1846 4.61 2.53 0.55 1937 4.44 2.44 0.55 1991
26 22 5.23 2.25 0.43 1919 4.90 2.11 0.43 2027 4.73 2.03 0.43 2063
26 24 5.52 1.71 0.31 1991 5.18 1.61 0.31 2082 5.04 1.56 0.31 2127
26 26 5.81 1.10 0.19 2063 5.47 1.04 0.19 2154 5.30 1.01 0.19 2199
27 18 4.70 3.34 0.71 1774 4.32 3.07 0.71 1882 4.15 2.95 0.71 1919
27 20 4.94 2.92 0.59 1846 4.61 2.72 0.59 1937 4.44 2.62 0.59 1991
27 22 5.23 2.46 0.47 1919 4.90 2.30 0.47 2027 4.73 2.22 0.47 2063
27 24 5.52 1.93 0.35 1991 5.18 1.81 0.35 2082 5.04 1.76 0.35 2127
27 26 5.81 1.34 0.23 2063 5.47 1.26 0.23 2154 5.30 1.22 0.23 2199
28 18 4.70 3.53 0.75 1774 4.32 3.24 0.75 1882 4.15 3.11 0.75 1919
28 20 4.94 3.11 0.63 1846 4.61 2.90 0.63 1937 4.44 2.80 0.63 1991
28 22 5.23 2.67 0.51 1919 4.90 2.50 0.51 2027 4.73 2.41 0.51 2063
28 24 5.52 2.15 0.39 1991 5.18 2.02 0.39 2082 5.04 1.97 0.39 2127
28 26 5.81 1.57 0.27 2063 5.47 1.48 0.27 2154 5.30 1.43 0.27 2199
29 18 4.70 3.72 0.79 1774 4.32 3.41 0.79 1882 4.15 3.28 0.79 1919
29 20 4.94 3.31 0.67 1846 4.61 3.09 0.67 1937 4.44 2.97 0.67 1991
29 22 5.23 2.88 0.55 1919 4.90 2.69 0.55 2027 4.73 2.60 0.55 2063
29 24 5.52 2.37 0.43 1991 5.18 2.23 0.43 2082 5.04 2.17 0.43 2127
29 26 5.81 1.80 0.31 2063 5.47 1.70 0.31 2154 5.30 1.64 0.31 2199
30 18 4.70 3.90 0.83 1774 4.32 3.59 0.83 1882 4.15 3.45 0.83 1919
30 20 4.94 3.51 0.71 1846 4.61 3.27 0.71 1937 4.44 3.15 0.71 1991
30 22 5.23 3.09 0.59 1919 4.90 2.89 0.59 2027 4.73 2.79 0.59 2063
30 24 5.52 2.59 0.47 1991 5.18 2.44 0.47 2082 5.04 2.37 0.47 2127
30 26 5.81 2.03 0.35 2063 5.47 1.92 0.35 2154 5.30 1.86 0.35 2199
31 18 4.70 4.09 0.87 1774 4.32 3.76 0.87 1882 4.15 3.61 0.87 1919
31 20 4.94 3.71 0.75 1846 4.61 3.46 0.75 1937 4.44 3.33 0.75 1991
31 22 5.23 3.30 0.63 1919 4.90 3.08 0.63 2027 4.73 2.98 0.63 2063
31 24 5.52 2.82 0.51 1991 5.18 2.64 0.51 2082 5.04 2.57 0.51 2127
31 26 5.81 2.27 0.39 2063 5.47 2.13 0.39 2154 5.30 2.07 0.39 2199
32 18 4.70 4.28 0.91 1774 4.32 3.93 0.91 1882 4.15 3.78 0.91 1919
32 20 4.94 3.91 0.79 1846 4.61 3.64 0.79 1937 4.44 3.51 0.79 1991
32 22 5.23 3.51 0.67 1919 4.90 3.28 0.67 2027 4.73 3.17 0.67 2063
32 24 5.52 3.04 0.55 1991 5.18 2.85 0.55 2082 5.04 2.77 0.55 2127
32 26 5.81 2.50 0.43 2063 5.47 2.35 0.43 2154 5.30 2.28 0.43 2199

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

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

35 40 43

E1E1

OUTDOOR DB(:)

14

PERFORMANCE DATA COOL operation(230V)

MCFH-A24WV - : MUCFH-A24WV -

CAPACITY :6.0(KW) SHF :0.64 INPUT :2450(W)

INDOOR INDOOR

DB(:) WB(:)

21 18 7.05 3.24 0.46 1960 6.75 3.11 0.46 2058 6.48 2.98 0.46 2156 6.24 2.87 0.46 2254
21 20 7.35 2.50 0.34 2058 7.05 2.40 0.34 2181 6.84 2.33 0.34 2230 6.60 2.24 0.34 2328
22 18 7.05 3.53 0.50 1960 6.75 3.38 0.50 2058 6.48 3.24 0.50 2156 6.24 3.12 0.50 2254
22 20 7.35 2.79 0.38 2058 7.05 2.68 0.38 2181 6.84 2.60 0.38 2230 6.60 2.51 0.38 2328
22 22 7.65 1.99 0.26 2132 7.38 1.92 0.26 2266 7.20 1.87 0.26 2328 6.90 1.79 0.26 2426
23 18 7.05 3.81 0.54 1960 6.75 3.65 0.54 2058 6.48 3.50 0.54 2156 6.24 3.37 0.54 2254
23 20 7.35 3.09 0.42 2058 7.05 2.96 0.42 2181 6.84 2.87 0.42 2230 6.60 2.77 0.42 2328
23 22 7.65 2.30 0.30 2132 7.38 2.21 0.30 2266 7.20 2.16 0.30 2328 6.90 2.07 0.30 2426
24 18 7.05 4.09 0.58 1960 6.75 3.92 0.58 2058 6.48 3.76 0.58 2156 6.24 3.62 0.58 2254
24 20 7.35 3.38 0.46 2058 7.05 3.24 0.46 2181 6.84 3.15 0.46 2230 6.60 3.04 0.46 2328
24 22 7.65 2.60 0.34 2132 7.38 2.51 0.34 2266 7.20 2.45 0.34 2328 6.90 2.35 0.34 2426
24 24 8.04 1.77 0.22 2230 7.74 1.70 0.22 2352 7.56 1.66 0.22 2426 7.32 1.61 0.22 2548
25 18 7.05 4.37 0.62 1960 6.75 4.19 0.62 2058 6.48 4.02 0.62 2156 6.24 3.87 0.62 2254
25 20 7.35 3.68 0.50 2058 7.05 3.53 0.50 2181 6.84 3.42 0.50 2230 6.60 3.30 0.50 2328
25 22 7.65 2.91 0.38 2132 7.38 2.80 0.38 2266 7.20 2.74 0.38 2328 6.90 2.62 0.38 2426
25 24 8.04 2.09 0.26 2230 7.74 2.01 0.26 2352 7.56 1.97 0.26 2426 7.32 1.90 0.26 2548
26 18 7.05 4.65 0.66 1960 6.75 4.46 0.66 2058 6.48 4.28 0.66 2156 6.24 4.12 0.66 2254
26 20 7.35 3.97 0.54 2058 7.05 3.81 0.54 2181 6.84 3.69 0.54 2230 6.60 3.56 0.54 2328
26 22 7.65 3.21 0.42 2132 7.38 3.10 0.42 2266 7.20 3.02 0.42 2328 6.90 2.90 0.42 2426
26 24 8.04 2.41 0.30 2230 7.74 2.32 0.30 2352 7.56 2.27 0.30 2426 7.32 2.20 0.30 2548
26 26 8.28 1.49 0.18 2352 8.04 1.45 0.18 2475 7.92 1.43 0.18 2548 7.68 1.38 0.18 2622
27 18 7.05 4.94 0.70 1960 6.75 4.73 0.70 2058 6.48 4.54 0.70 2156 6.24 4.37 0.70 2254
27 20 7.35 4.26 0.58 2058 7.05 4.09 0.58 2181 6.84 3.97 0.58 2230 6.60 3.83 0.58 2328
27 22 7.65 3.52 0.46 2132 7.38 3.39 0.46 2266 7.20 3.31 0.46 2328 6.90 3.17 0.46 2426
27 24 8.04 2.73 0.34 2230 7.74 2.63 0.34 2352 7.56 2.57 0.34 2426 7.32 2.49 0.34 2548
27 26 8.28 1.82 0.22 2352 8.04 1.77 0.22 2475 7.92 1.74 0.22 2548 7.68 1.69 0.22 2622
28 18 7.05 5.22 0.74 1960 6.75 5.00 0.74 2058 6.48 4.80 0.74 2156 6.24 4.62 0.74 2254
28 20 7.35 4.56 0.62 2058 7.05 4.37 0.62 2181 6.84 4.24 0.62 2230 6.60 4.09 0.62 2328
28 22 7.65 3.83 0.50 2132 7.38 3.69 0.50 2266 7.20 3.60 0.50 2328 6.90 3.45 0.50 2426
28 24 8.04 3.06 0.38 2230 7.74 2.94 0.38 2352 7.56 2.87 0.38 2426 7.32 2.78 0.38 2548
28 26 8.28 2.15 0.26 2352 8.04 2.09 0.26 2475 7.92 2.06 0.26 2548 7.68 2.00 0.26 2622
29 18 7.05 5.50 0.78 1960 6.75 5.27 0.78 2058 6.48 5.05 0.78 2156 6.24 4.87 0.78 2254
29 20 7.35 4.85 0.66 2058 7.05 4.65 0.66 2181 6.84 4.51 0.66 2230 6.60 4.36 0.66 2328
29 22 7.65 4.13 0.54 2132 7.38 3.99 0.54 2266 7.20 3.89 0.54 2328 6.90 3.73 0.54 2426
29 24 8.04 3.38 0.42 2230 7.74 3.25 0.42 2352 7.56 3.18 0.42 2426 7.32 3.07 0.42 2548
29 26 8.28 2.48 0.30 2352 8.04 2.41 0.30 2475 7.92 2.38 0.30 2548 7.68 2.30 0.30 2622
30 18 7.05 5.78 0.82 1960 6.75 5.54 0.82 2058 6.48 5.31 0.82 2156 6.24 5.12 0.82 2254
30 20 7.35 5.15 0.70 2058 7.05 4.94 0.70 2181 6.84 4.79 0.70 2230 6.60 4.62 0.70 2328
30 22 7.65 4.44 0.58 2132 7.38 4.28 0.58 2266 7.20 4.18 0.58 2328 6.90 4.00 0.58 2426
30 24 8.04 3.70 0.46 2230 7.74 3.56 0.46 2352 7.56 3.48 0.46 2426 7.32 3.37 0.46 2548
30 26 8.28 2.82 0.34 2352 8.04 2.73 0.34 2475 7.92 2.69 0.34 2548 7.68 2.61 0.34 2622
31 18 7.05 6.06 0.86 1960 6.75 5.81 0.86 2058 6.48 5.57 0.86 2156 6.24 5.37 0.86 2254
31 20 7.35 5.44 0.74 2058 7.05 5.22 0.74 2181 6.84 5.06 0.74 2230 6.60 4.88 0.74 2328
31 22 7.65 4.74 0.62 2132 7.38 4.58 0.62 2266 7.20 4.46 0.62 2328 6.90 4.28 0.62 2426
31 24 8.04 4.02 0.50 2230 7.74 3.87 0.50 2352 7.56 3.78 0.50 2426 7.32 3.66 0.50 2548
31 26 8.28 3.15 0.38 2352 8.04 3.06 0.38 2475 7.92 3.01 0.38 2548 7.68 2.92 0.38 2622
32 18 7.05 6.35 0.90 1960 6.75 6.08 0.90 2058 6.48 5.83 0.90 2156 6.24 5.62 0.90 2254
32 20 7.35 5.73 0.78 2058 7.05 5.50 0.78 2181 6.84 5.34 0.78 2230 6.60 5.15 0.78 2328
32 22 7.65 5.05 0.66 2132 7.38 4.87 0.66 2266 7.20 4.75 0.66 2328 6.90 4.55 0.66 2426
32 24 8.04 4.34 0.54 2230 7.74 4.18 0.54 2352 7.56 4.08 0.54 2426 7.32 3.95 0.54 2548
32 26 8.28 3.48 0.42 2352 8.04 3.38 0.42 2475 7.92 3.33 0.42 2548 7.68 3.23 0.42 2622

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

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

21 25 27 30

E1E1

OUTDOOR DB(:)

15

PERFORMANCE DATA COOL operation(230V)

MCFH-A24WV - : MUCFH-A24WV -

CAPACITY :6.0(KW) SHF :0.64 INPUT :2450(W)

INDOOR INDOOR

DB(:) WB(:)

21 18 5.88 2.70 0.46 2401 5.40 2.48 0.46 2548 5.19 2.39 0.46 2597
21 20 6.18 2.10 0.34 2499 5.76 1.96 0.34 2622 5.55 1.89 0.34 2695
22 18 5.88 2.94 0.50 2401 5.40 2.70 0.50 2548 5.19 2.60 0.50 2597
22 20 6.18 2.35 0.38 2499 5.76 2.19 0.38 2622 5.55 2.11 0.38 2695
22 22 6.54 1.70 0.26 2597 6.12 1.59 0.26 2744 5.91 1.54 0.26 2793
23 18 5.88 3.18 0.54 2401 5.40 2.92 0.54 2548 5.19 2.80 0.54 2597
23 20 6.18 2.60 0.42 2499 5.76 2.42 0.42 2622 5.55 2.33 0.42 2695
23 22 6.54 1.96 0.30 2597 6.12 1.84 0.30 2744 5.91 1.77 0.30 2793
24 18 5.88 3.41 0.58 2401 5.40 3.13 0.58 2548 5.19 3.01 0.58 2597
24 20 6.18 2.84 0.46 2499 5.76 2.65 0.46 2622 5.55 2.55 0.46 2695
24 22 6.54 2.22 0.34 2597 6.12 2.08 0.34 2744 5.91 2.01 0.34 2793
24 24 6.90 1.52 0.22 2695 6.48 1.43 0.22 2818 6.30 1.39 0.22 2879
25 18 5.88 3.65 0.62 2401 5.40 3.35 0.62 2548 5.19 3.22 0.62 2597
25 20 6.18 3.09 0.50 2499 5.76 2.88 0.50 2622 5.55 2.78 0.50 2695
25 22 6.54 2.49 0.38 2597 6.12 2.33 0.38 2744 5.91 2.25 0.38 2793
25 24 6.90 1.79 0.26 2695 6.48 1.68 0.26 2818 6.30 1.64 0.26 2879
26 18 5.88 3.88 0.66 2401 5.40 3.56 0.66 2548 5.19 3.43 0.66 2597
26 20 6.18 3.34 0.54 2499 5.76 3.11 0.54 2622 5.55 3.00 0.54 2695
26 22 6.54 2.75 0.42 2597 6.12 2.57 0.42 2744 5.91 2.48 0.42 2793
26 24 6.90 2.07 0.30 2695 6.48 1.94 0.30 2818 6.30 1.89 0.30 2879
26 26 7.26 1.31 0.18 2793 6.84 1.23 0.18 2916 6.63 1.19 0.18 2977
27 18 5.88 4.12 0.70 2401 5.40 3.78 0.70 2548 5.19 3.63 0.70 2597
27 20 6.18 3.58 0.58 2499 5.76 3.34 0.58 2622 5.55 3.22 0.58 2695
27 22 6.54 3.01 0.46 2597 6.12 2.82 0.46 2744 5.91 2.72 0.46 2793
27 24 6.90 2.35 0.34 2695 6.48 2.20 0.34 2818 6.30 2.14 0.34 2879
27 26 7.26 1.60 0.22 2793 6.84 1.50 0.22 2916 6.63 1.46 0.22 2977
28 18 5.88 4.35 0.74 2401 5.40 4.00 0.74 2548 5.19 3.84 0.74 2597
28 20 6.18 3.83 0.62 2499 5.76 3.57 0.62 2622 5.55 3.44 0.62 2695
28 22 6.54 3.27 0.50 2597 6.12 3.06 0.50 2744 5.91 2.96 0.50 2793
28 24 6.90 2.62 0.38 2695 6.48 2.46 0.38 2818 6.30 2.39 0.38 2879
28 26 7.26 1.89 0.26 2793 6.84 1.78 0.26 2916 6.63 1.72 0.26 2977
29 18 5.88 4.59 0.78 2401 5.40 4.21 0.78 2548 5.19 4.05 0.78 2597
29 20 6.18 4.08 0.66 2499 5.76 3.80 0.66 2622 5.55 3.66 0.66 2695
29 22 6.54 3.53 0.54 2597 6.12 3.30 0.54 2744 5.91 3.19 0.54 2793
29 24 6.90 2.90 0.42 2695 6.48 2.72 0.42 2818 6.30 2.65 0.42 2879
29 26 7.26 2.18 0.30 2793 6.84 2.05 0.30 2916 6.63 1.99 0.30 2977
30 18 5.88 4.82 0.82 2401 5.40 4.43 0.82 2548 5.19 4.26 0.82 2597
30 20 6.18 4.33 0.70 2499 5.76 4.03 0.70 2622 5.55 3.89 0.70 2695
30 22 6.54 3.79 0.58 2597 6.12 3.55 0.58 2744 5.91 3.43 0.58 2793
30 24 6.90 3.17 0.46 2695 6.48 2.98 0.46 2818 6.30 2.90 0.46 2879
30 26 7.26 2.47 0.34 2793 6.84 2.33 0.34 2916 6.63 2.25 0.34 2977
31 18 5.88 5.06 0.86 2401 5.40 4.64 0.86 2548 5.19 4.46 0.86 2597
31 20 6.18 4.57 0.74 2499 5.76 4.26 0.74 2622 5.55 4.11 0.74 2695
31 22 6.54 4.05 0.62 2597 6.12 3.79 0.62 2744 5.91 3.66 0.62 2793
31 24 6.90 3.45 0.50 2695 6.48 3.24 0.50 2818 6.30 3.15 0.50 2879
31 26 7.26 2.76 0.38 2793 6.84 2.60 0.38 2916 6.63 2.52 0.38 2977
32 18 5.88 5.29 0.90 2401 5.40 4.86 0.90 2548 5.19 4.67 0.90 2597
32 20 6.18 4.82 0.78 2499 5.76 4.49 0.78 2622 5.55 4.33 0.78 2695
32 22 6.54 4.32 0.66 2597 6.12 4.04 0.66 2744 5.91 3.90 0.66 2793
32 24 6.90 3.73 0.54 2695 6.48 3.50 0.54 2818 6.30 3.40 0.54 2879
32 26 7.26 3.05 0.42 2793 6.84 2.87 0.42 2916 6.63 2.78 0.42 2977

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

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

35 40 43

E1E1

OUTDOOR DB(:)

16

PERFORMANCE DATA
HEAT operation(230V)

MCFH-A18WV - : MUCFH-A18WV -

CAPACITY :5.0(KW) INPUT :1890(W)

INDOOR

DB(:)

15 3.15 1229 3.80 1474 4.45 1663 5.10 1796 5.75 1909 6.35 1966 7.00 2003
21 3.00 1323 3.60 1569 4.25 1739 4.85 1871 5.50 1966 6.10 2022 6.73 2098
26 2.70 1418 3.35 1663 3.95 1833 4.60 1966 5.25 2060 5.85 2117 6.50 2174

-10 -5 0 5 10 15 20

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

E1E1

OUTDOOR WB(:)

HEAT operation(230V)

MCFH-A24WV - : MUCFH-A24WV -

CAPACITY :6.8(KW) INPUT :2720(W)

INDOOR

DB(:)

15 4.28 1768 5.17 2122 6.05 2394 6.94 2584 7.82 2747 8.64 2829 9.52 2883
21 4.08 1904 4.90 2258 5.78 2502 6.60 2693 7.48 2829 8.30 2910 9.15 3019
26 3.67 2040 4.56 2394 5.37 2638 6.26 2829 7.14 2965 7.96 3046 8.84 3128

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

-10 -5 0 5 10 15 20

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

E1E1

OUTDOOR WB(:)

17

E1

MUCFH-A18WV-

E1

MUCFH-A24WV-

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:. (MUCFH-A18WV)

Defrost start temperature does not change.(-3.0:) (MUCFH-A24WV)
Defrost finish temperature changes from 3.1: to 10.1:.(MUCFH-A18WV)

Defrost finish temperature changes from 3.1: to 15:.(MUCFH-A24WV)

9

ACTUATOR CONTROL

MUCFH-A18WV - MUCFH-A24WV -

R.V. coil control

Heating · · · · · ON
Cooling · · · · · OFF
Dry · · · · · · · · OFF

NOTE. : The 4-way valve reverses for 5 seconds right before start-up of the compressor.

Example. In case of power ON

with remote controller

Compressor
R.V. coil

Outdoor fan

(COOL / DRY)

5 sec.

ON
OFF

ON
OFF

ON
OFF

E1E1

(HEAT)

5 sec.

ON
OFF

ON
OFF

ON
OFF

SERVICE FUNCTIONS10

MUCFH-A18WV - MUCFH-A24WV -

10-1. COMPULSORY DEFROSTING MODE FOR SERVICE

By short circuit of the connector JPDS and JPSG (MUCFH-A18WV) / JPG1 and R871 (MUCFH-A24WV) on the outdoor
deicer P.C. board, defrosting mode can be accomplished regardless of the defrost interval restriction.
Defrost thermistor RT61 must read below -3:. (Refer to page 27 or 28.)

10-2. 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 page 27 or 28.)

E1E1

18

11

TROUBLESHOOTING

MUCFH-A18WV - MUCFH-A24WV -

E1E1

11-1. 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 service.

(1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then after

confirming the horizontal vane has completely closed, turn off the breaker.

(2) Be sure to unplug the power cord before removing the air inlet grille, the front panel, the cabinet, the top panel and

the electronic control P.C. boards.

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

components.

(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) If the electronic control P.C. board is supposed to be defective, check the copper foil pattern for disconnection and

the components for bursting and discoloration.

(3) When troubleshooting, refer to the flow chart and the check table on page 20 and 21.

19

11-2. Instruction of troubleshooting

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 in
only 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 A
"Check of
outdoor unit"
on page 22 or

23.

Refer to C
"Check of
outdoor unit"
on page 25.

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

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

• Mis-wiring
or trouble of
serial signal

2-time flash
Cause:
Indoor unit

• Trouble of
room
temperature/
indoor coil
thermistor

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

4-time flash
Cause:
Indoor unit

• Trouble of
indoor
electric
control
P.C. board

Refer to
"Check of
indoor
electric
control P.C.
board".

Refer to B
"How to
check mis­wiring and
serial signal
error (When
outdoor unit
doesn't
work)" on
page 24.

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 D
"Check of
R.V. coil"
on page 25.

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 E
"Check of
outdoor
thermistor"
on page 26.

Replace the
deicer
P.C. board.

As for indoor unit refer to the service manual OB336.

20

11-3. Trouble criterion of main parts

C

S

R

BLK

RED

WHT

BLK

REDORN

WHT

MAIN
AUX

P

BLK YLW

REDORN

WHT

MAIN

AUX.2

AUX.1

P

MUCFH-A18WV - MUCFH-A24WV -

Part name

Defrost
thermistor (RT61)

Ambient temper­ature thermistor
(RT63)

MUCFH-A24WV

Measure the resistance with a tester.
(Part temperature -10°C ~ 40°C)

Normal

5kΩ ~ 60kΩ

Check method and criterion

E1E1

Figure

Abnormal

Open or short-circuit

Compressor
(MC)

INNER
PROTECTOR
160i 5: OPEN

90i10: CLOSE

Outdoor fan
motor
(MF)

INNER
PROTECTOR

145i 8: OPEN

( 88i15: CLOSEw)

R.V. coil
(21S4)

w Reference value

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

Color of lead

wire
C-R

C-S

MUCFH-A18WV

1.05 ~ 1.30Ω

2.38 ~ 2.92Ω

Normal

MUCFH-A24WV

0.84 ~ 1.04Ω

1.82 ~ 2.24Ω

Abnormal

Open or

short-circuit

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

MUCFH-A18WV

102 ~ 126Ω

97 ~ 120Ω

Normal

MUCFH-A24WV

55 ~ 68Ω

26 ~ 33Ω
55 ~ 68Ω

Abnormal

Open or

short-circuit

Measure the resistance using a tester. (Part temperature -10°C ~ 40°C)

Normal

2.673kΩ ~ 3.268kΩ

Abnormal

Open or short-circuit

MUCFH-A18WV

MUCFH-A24WV

: INNER PROTECTOR

P

21

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

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 21.

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 21.

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 page 27.

w

w

w

w

A

Check of outdoor unit

MUCFH-A18WV -

E1

22

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

A

Check of outdoor unit

MUCFH-A24WV -

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.

E1

Start

Compressor
doesn't operate.

Is there 5V DC between

+

J101 - J401 on the deicer
P.C. board? w1

Yes

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

Yes

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

Yes

Check the compressor.
Refer to page 21.

Is there 230V AC between

No

CN730 1-3 on the deicer
P.C. board? w1

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

Make the connection
of wiring correct.

No

Make the connection
of wiring correct.

Outdoor fan motor
doesn't operate.

Is there 5V DC between

+

J101 - J401 on the deicer
P.C. board? w1

Yes

Is there 230V AC between
CN711 1-3 or 2-3 on the
deicer P.C. board? w1

Yes

Check the outdoor fan
motor. Refer to page 21.

Is there 230V AC between

No

CN730 1-3 on the deicer
P.C. board? w1

Replace the
deicer P.C. board.

No

Replace the
deicer P.C. board.

Yes

No

Make the connection
of wiring correct.

w1 Refer to page 28.

23

When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second.
Outdoor unit does not operate.

B

How to check mis-wiring and serial signal error (when outdoor unit does not work)

Start

w 1 Short circuit of JPG and JPS

on the electronic control P.C.
board enables self-check to
be displayed in 3 seconds.

Repair wiring.

3 minutes later, is there 20V DC between both ends
of R132? w 1
(By tester, the stylus is between 0 ~ 20V.)

•Turn OFF power supply.

•Reconnect indoor/ outdoor unit connecting wire.

•Turn ON power supply.

3 minutes later, when EMERGENCY OPERATION switch is pressed ,
is there 12V DC between outdoor terminal block and ?

Is there 5V DC between J205 -J101 (MUCFH-A18WV)/
J101 -J401 (MUCFH-A24WV) on the deicer P.C. board?

–

+

Yes

1. Turn OFF power supply and disconnect indoor/ outdoor unit connecting wire of the indoor unit.

2. Short-circuit between indoor terminal block and .

3. Turn ON power supply and press EMERGENCY OPERATION switch.

Yes

Yes

+

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

No

3

N

–

No

3

N

Replace the indoor electronic control
P.C. board.

No

No

Rectify indoor/ outdoor unit
connecting wire.

Check and rectify fuse and varistor on the
deicer P.C. board.

Yes

During EMERGENCY OPERATION, is there 10V DC between both
ends of R601 on the deicer P.C. board?
(By tester, the stylus is between 5 ~10V.)

Yes

Replace the deicer P.C. board.

As for indoor unit, refer to the service manual OB336.

24

No

Rectify indoor/ outdoor unit
connecting wire.

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

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 and N on the
outdoor terminal block?

Yes

Replace the compressor
contactor(52C).

No

Make the connection
of wiring correct.

Check of outdoor unit

C

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

Check of R.V. coil

D

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

Disconnect the TAB52 on the deicer P.C. board. (MUCFH-A24WV)
Turn ON the power supply and operate the indoor unit in COOL mode
by pressing the EMERGENCY OPERATION switch.

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

Check of R.V. coil

D

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

Disconnect the TAB52 on the deicer P.C. board. (MUCFH-A24WV)
Turn ON the power supply and operate the indoor unit in HEAT mode
by pressing the EMERGENCY OPERATION switch.

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

Yes

Is there 230V AC between
CN7211 – 2 (MUCFH-A18WV)/
CN7211 – 3 (MUCFH-A24WV)
on the deicer P.C. board?

Yes

Replace the
deicer P.C. board.

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

Is there 230V AC between
CN7211 – 2 (MUCFH-A18WV)/
CN7211 – 3 (MUCFH-A24WV)
on the deicer P.C. board?

Replace the R.V. coil.

Yes

Yes

25

No

Ok

No

Replace the R.V. coil.

No

OK

No

Replace the
deicer P.C. board

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

E

Check of outdoor thermistor

w Disconnect the connectors CN661 from the deicer P.C. board.

(Check the characteristics of each thermistor.)

Defrost thermistor(RT61)

Turn OFF the
power supply.

Measure
resistance
between CN 661
1 and 2.

Does the resistance
of thermistor have
the characteristics
on page 27 or 28?

No

Replace the
thermistor.

Replace the deicer P.C.

board.

Reconnect CN661.
Turn ON the power

Yes

supply and press
the EMERGENCY
OPERATION
switch.

W1. It is thought defective contact of the connector.

Does the unit operate
10 minutes or more?

No

Yes

Ok W1.

26

MUCFH-A18WV -

E1

Outdoor deicer P.C. board

CN711
Outdoor fan motor
230V AC

}

CN721
R.V. coil
230V AC

}

5V DC
J205
J101

+

--

(Refer to
page 22
or 24.)

Power supply input

230V AC

}

NR61
Varistor

F61
Fuse

2A/250V

R601

+

5~10V DC

}

--

Defrost interval time
short pin
(JPDS, JPSG)
(Refer to page 18.)

Jumper wire for

}

change in defrost
setting
(JRF,JRG)

}

CN661 1-2
Defrost thermistor RT61 (Refer to page 26.)

(Refer to page 18.)

12V DC
J204

+

J101

--

27

MUCFH-A24WV -

Defrost thermistor (RT61)

-20 -10 0 10 20 30 40

0

10

20

30

40

50

60

70

80

90

100

Temperature(:)

Resistance(k")

E1

Outdoor deicer P.C. board

CN661 1-2
Defrost thermistor (RT61)
(Refer to page 26.)

Fan motor
(CN711)
230V

Varistor
(NR62)

Defrost
interval
time short
pin(JPG1,
R871)
(Refer to
page 18.)

J101

+

}

5V
DC

J401
(Refer to
page 23
or 24.)

Jumper wire for
change in defrost
setting (JRF, JRG)
(Refer to page 18.)

28

R.V. coil

}

(CN721)
230V

+

12V DC

}

Fuse (F61)

3.15A / 250V

Varistor
(NR61)

Power sup­ply input

}

CN7301-3

230V AC
(Refer to
page 23.)

R601

}

10V DC

+

(Refer to
page 24.)

12

(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector is a terminal

with lock mechanism

1Slide the sleeve.
2Pull the terminal while

pushing the locking
lever.

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

In case of terminal with lock mechanism, detach the terminal as shown below.
There are two types ( Refer to (1) and (2)) of the terminal with lock mechanism.
The terminal with no lock mechanism can be removed by pulling it out.
Check the shape of the terminal and work.

<"Terminal with lock mechanism" Detaching points>

Connector

Sleeve

Locking lever

DISASSEMBLY INSTRUCTIONS

12-1. MUCFH-A18WV -

E1

OUTDOOR UNIT

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

29

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 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

Compressor set nuts

30

12-2. MUCFH-A24WV -

OUTDOOR UNIT

E1

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

Screws
of the
back
panel

Photo 1

Screws
of the
cabinet

Photo 2

Screws
of the
front
panel

PHOTOS

Screw of the top panel

Screws of the cabinet

Screw of the service panel

Screws
of the
top
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.

31

Photo 4

Screws
of the
relay
panel

Deicer P.C. board

Screw
of the
valve
cover

Terminal

blocks

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 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

32

13

Symbol

in Wiring

Diagram

Q'ty/unit

MUCFH-A18WV-

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 817 353
E02 144 301
E02 466 383
E02 820 451
E02 817 374
E02 821 374
E02 820 310
E02 817 009
E02 139 936
E02 746 937
E02 289 937
E02 820 936
E02 095 382
E02 821 490
E02 154 642
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
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✕650
{3.0✕{1.6✕500
{2.5✕{0.6✕1000

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
1

27

28

E02 817 704
E02 444 705
E02 444 706

DRAIN SOCKET
DRAIN CAP
DRAIN CAP

1
2
1

[33
[16

PARTS LIST

MUCFH-A18WV ­13-1. OUTDOOR UNIT STRUCTURAL PARTS,

E1

13-2. ACCESSORY

ELECTRICAL PARTS AND FUNCTIONAL PARTS

DEFROST THERMISTOR

19

18

27

21

20

17

15

1
2

14

16
13

12
11

10

5 6 7 8 9

3

4

28

13-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

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

13-2. ACCESSORY

33

MUCFH-A24WV -

E1

13-3. 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

13-4. ACCESSORY

32

33

12

16

1513 14

34

MUCFH-A24WV -

32
33

E02 817 704
E02 444 705

DRAIN SOCKET
DRAIN CAP

1
2

[33

E1

13-3. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS

AND FUNCTIONAL PARTS

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

Q'ty/unit

MUCFH-A24WV -

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

No.

Part No.

1

E02 819 297

2

E02 821 630

3

E02 821 301

4

E02 214 501

5

E02 821 290

6

E02 819 232

7

E02 819 009

8

E02 819 521

9

E02 891 961

10

E02 821 490

11

E02 821 310

12

E02 527 506

13

E02 821 900

14

E02 819 661

15

E02 821 662

16

E02 819 650

17

E02 819 245

18

E02 128 383

19

E02 821 374

20

E02 817 374

21

E02 138 351

22

E02 828 451

23

E07 012 340

24

E02 818 353

25

E02 819 233

26

E02 817 009

27

E02 726 515

28

E02 127 382

29

E02 336 385

30

E02 154 642
E02 069 936

31

E02 139 937

Part Name

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
CAPILLARY TUBE

Symbol

in Wiring

Diagram

MF

21S4

RT61

MC

DSAR

TB2
TB1

C2

52C

C1

F61

NR61

E1

Remarks

RA6V85-

4RUBBERS/SET
NN29VBAHT

{15.88
{6.35

2P
3P

3.0+/440V AC

55+/440V AC

250V/3.15A

{3.0x{2.0x400
{3.0x{2.0x800

13-4. ACCESSORY

35

HEAD OFFICE: MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

CC

Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Distributed in Jul. 2005. No.OB337 REVISED EDITION-B 6
Distributed in Apr. 2004. No.OB337 REVISED EDITION-A 6
Distributed in Feb. 2004. No.OB337 6
Made in Japan

New publication, effective Jul. 2005
Specifications subject to change without notice.