Mitsubishi Electric MCF-13NV-WH, MUCF-13NV-E3, MCF-13NV-E3WH Service Manual

SERVICE MANUAL

FLOOR AND CEILING TYPE AIR CONDITIONERS

CONTENTS

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

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

3. SPECIFICATION·················································4

4. NOISE CRITERIA CURVES ······························ 5

5. OUTLINES AND DIMENSIONS·························6

6. WIRING DIAGRAM ············································7

7. REFRIGERANT SYSTEM DIAGRAM················8

8. PERFORMANCE CURVES································9

9. MICROPROCESSOR CONTROL ····················15

10. SERVICE FUNCTIONS·····································21

11. TROUBLESHOOTING······································22

12. DISASSEMBLY INSTRUCTIONS·····················28

13. PARTS LIST······················································32

14. OPTIONAL PARTS ···········································35

Wireless type
Model

MCF-13NV-

(WH)

·MUCF-13NV-

E3E3

(When installed on the ceiling)

(When installed on the floor)

No. OB239

MCF-13NV -

E3

2

PART NAMES AND FUNCTIONS

INDOOR UNIT

(When installed on the floor)

(When the air inlet grille is opened.)

Deodorizing filter (gray sponge type)(option)

Air filter

Remote controller

Air inlet

Operation section

Air cleaning filter (whilte bellows type)(option)

Front panel

Receiving section

Operation indicator lamp

Horizontal vane

Vertical vanes

Emergency operation switch

(When installed on the ceiling)

2

TECHNICAL CHANGES

1

MCF-13NV - ➔MCF-13NV -

1. Indoor unit model name has changed.

MUCF-13NV - ➔MUCF-13NV -

1. Outdoor unit model has changed.

E3E2

E3E2

MCF-13NV -

E3

3

RESETRESET

CLOCKCLOCK

MCF-13NV -

E3

OUTDOOR UNIT

MUCF-13NV -

E3

Air inlet

Piping

Drain hose

Air outlet

Drain outlet

(back and side)

REMOTE CONTROLLER

SPECIFICATION

4

3

Model

Function

Power supply
Capacity
Dehumidification
Air flow
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current

kW

R/h

K/h

A
A

W

A(kW)

%

A
A
A

W

"

"

"

mm
mm
mm
mm
mm
mm

kg
kg

dB

dB
rpm
rpm

kg

cc
k"
k"

Capacity

Electrical
data

Coefficient of performance(C.O.P)

Compressor

Indoor
fan motor

Outdoor
fan motor

Dimensions

Indoor unit

Indoor unit

Width
Height
Depth
Width
Height
Depth

Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit

RT11(at 25:)
RT12(at 25:)

Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator

Outdoor unit

Outdoor unit
Air direction

Refrigerant filling capacity(R-22)
Refrigerating machine oil <Model>

Thermistor

Weight

Special
remarks

Model
Output
Winding resistance (at 20:)
Model

Winding resistance (at 20:)

Model

Winding resistance (at 20:)

MCF-13NV-

E3

Cooling

Single phase, 220-240V, 50Hz

3.7

1.6

678

10

6.3-6.3

1,310-1,380

—
95-91
35-38

5.74-5.72

0.56-0.58

2.82-2.68

RH-231VHAT

1,100

C-R2.11 C-S3.97

RA6V33-CB
WHT-BLK 176
BLK-RED 413

34

5

43-44

49

1,080-1,130

700-750

3
1

0.85

520 <MS-56>

10
10

1,100

650
180
780
540
255

26

RB4V19-AB

WHT-BLK 203.2 BLK-YLW 45.9
YLW-BLU 32.7 BLU-BRN 44.4
BRN-RED 23.3

NOTE:Test conditions

Cooling : Indoor DB27°C WB19°C Outdoor DB35°C WB24°C

5

NOISE CRITERIA CURVES

4

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,
Cooling : DB 27

:

WB 19

:

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

Hi

(220-240V)

NOTCH

43-44

SPL(dB

(A)) LINE

MCF-13NV -

E3

MUCF-13NV -

E3

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,
Cooling : DB 35

:

WB 24

:

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

Hi

NOTCH

49

SPL(dB

(A)) LINE

OUTLINES AND DIMENSIONS

6

5

(When installed on the floor)

(When installed on the ceiling)

50cm or more

50cm or more

50cm or more

50cm or more

100cm or more

650

616.5

80.8 906 112.8

114

16

1100

93

77

113

143

180

17042.5

160

56

17.5

12.7

Gas line

6.35

Liquid line

INDOOR UNIT

MCF-13NV -

E3

MUCF-13NV -

E3

320

25

43-

35-

155

90

104

74

260

10

780

500

122

40

540

320

285

255

Service panel

Gas refrigerant
pipe joint
Refrigerant pipe
(flared)[12.7

Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) [6.35

Airout

Air in

Air in

109

32

110

147

Drainage
3holes [33

Unit: mm

OUTDOOR UNIT

If clearance
behind the outdoor
units only 40

B or 50

B

side

A must be

fully open.

10cm or more

10cm or more

10cm or more

Outdoor

unit

35cm or more

REQUIRED SPACE

A

40cm or more

7

WIRING DIAGRAM6

INDOOR UNIT

AUTO RESTART
ASSEMBLY

5

CN

104

SR144
SR142
SR143

LDFM

LDFL

LDFH

BLK
BLU
YLW

6

4

BLK
BLU
YLW

5

TB

CIRCUIT BREAKER

SW/THERMO

4

1

2

W

3

4

W

F11

52C

NR11

P.C.BOARD

RT11

CN201

3

151

CN

6
6

MV

HIC1

TRANS

101CN113

CN

BLU

REMOTE
CONTROLLER

DISPLAY &
RECEIVER
P.C.BOARD

5

5

GRN/YLW

W

WHT

W

BLU

N
2

W

BRN

N

W

L

GRN/YLW

TO OUTDOOR
UNIT
CONNECTING

POWER SUPPLY
~/N 220-240V
50Hz

MF

ORN
RED

7

3

2

1

RT12

2

2

WHT

RED

ORN

WHT

GRN/YLW

8

BRN

112

CN

C11

ELECTRONIC CONTROL P.C BOARD

LDC12

LDC11

LDCOM

220-240v~

SYMBOL
SR142~
SR144

TB

52C

SYMBOL

MV
NR11
RT11
RT12

SYMBOL

C11
F11

HIC1

MF

NAME

NAME NAME
INDOOR FAN CAPACITOR
FUSE (3.15A)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER FUSE)

VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
COIL TEMPERATURE THERMISTOR

SOLID STATE RELAY
TERMINAL BLOCK

CONTACTOR

PE

MODEL WIRING DIAGRAM

MCF-13NV -

E3

1Slide the sleeve.
2Pull the wire while pushing the locking lever.

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

2. “W” shows the terminals with a lock mechanism,
so they cannot be removed when you pull the lead wire.
Be sure to pull the lead wire by pushing the locking lever
(projected part) of the terminal with a finger.

OUTDOOR UNIT

MODEL WIRING DIAGRAM

SYMBOL

MF

TB

SYMBOL

F

MC

SYMBOL

C1
C2

NAME

NAME NAME
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR

FUSE(2A)
COMPRESSOR(INNER THERMOSTAT)

OUTDOOR FAN MOTOR(INNER THERMOSTAT)
TERMINAL BLOCK

W

W

MF

BLK

WHT

RED

N

2

220-240V~

BLU

BLU

WHT

BLK

RED

C1

TB

F

C2

RED

WHT

1
2
3

GRN/YLW

FROM
INDOOR UNIT
CONNECTING

C

S

R

MC

WHT

WHT

MUCF-13NV -

E3

NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.

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

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

8

REFRIGERANT SYSTEM DIAGRAM7

Refrigerant flow in cooling

Indoor
heat
exchanger

Indoor coil
thermistor
RT12

Room
temperature
thermistor
RT11

(option)
(With heat insulation)

Refrigerant pipe

[

12.7

(option)
(With heat insulation)

Refrigerant pipe

[

6.35

Flared

connection

Stop valve
(with service port)

Stop valve

Compressor

Strainer

Capillary tube

[3.0 ✕[1.6 ✕ 300

Outdoor

heat

exchanger

Distributor

INDOOR UNIT

OUTDOOR UNIT

Unit:mm

MCF-13NV -

E3

MUCF-13NV -

E3

A: Refrigerant piping
Max.length
15m(49ft)

✽

Max. Height difference

5m(16ft)

✽Height difference should be within

5m regardless of which unit,
indoor or outdoor position is high.

MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE

ADDITIONAL REFRIGERANT CHARGE (R-22 : g)

Length : m (ft)

A

15(49)

Gas

[12.7(1/2)

Liquid

[6.35(1/4)

Piping size O.D : mm(in.)

Model

MCF-13NV - E3

Outdoor unit precharged

850

15m

120

8m

15

10m

45

MCF-13NV - E3

Calculation : Xg=15g/mx(A-7)m

Model

Refrigerant piping length (one way)

14m

105

13m

90

11m6012m

75

9m

30

7m

0

MAX. HEIGHT DIFFERENCE

9

PERFORMANCE CURVES

8

The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions,
Since operating conditions vary according to the areas where these units are installed. The following information has been
provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.

(1) GUARANTEED VOLTAGE

Rated voltage : ±10% (198~264V), 50Hz

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

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

Indoor air wet-bulb temperature difference on the left side of the chart on this page shows the difference between the
indoor intake air wet-bulb temperature and the indoor outlet air wet-bulb temperature for your reference at service.

How to measure the indoor air wet-bulb temperature difference

1. 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 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 the room.

5. Press the EMERGENCY OPERATION switch to start the EMERGENCY COOL 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

Air out

Wet-and dry-bulb
thermometers

FRONT VIEW

Dry-bulb
thermometers

BACK VIEW

INDOOR UNIT

OUTDOOR UNIT

10.4

9.5

8.7

7.8

7.0

6.2

MCF-13NV-

E3

intake

intake

MCF-13NV -

E3

10

Dry Bulb temperature (˚C)

20
25
30

Relative humidity (%)

50
60
70

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

COOL operation

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

2 Air flow should be set at MAX.

20 25 30

0.3

0.4

0.5

0.6

0.7

0.8

20 25 30

3

4

5

6

7

8

Ambient temperature (:)
Ambient humidity(%)

18

50 60 70

32

(:)

(%)

Ambient temperature (:)
Ambient humidity(%)

18

50 60 70

32

(%)

Outdoor unit current (A)

Outdoor low pressure

7

6

5

4

3

8

(kgf/F•G)(MPa•G)

(:)

220-240V

220-240V

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 • G) =10.2(kgf/

ff

• G)

MUCF-13NV -

E3

11

OUTDOOR DB(:)

INDOOR INDOOR

21 25 27 30

DB(:) WB(:)

Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21 18 4.35 2.26 0.52 1048 4.16 2.16 0.52 1100 4.00 2.08 0.52 1153 3.85 2.00 0.52 1205
21 20 4.53 1.81 0.40 1100 4.35 1.74 0.40 1166 4.22 1.69 0.40 1192 4.07 1.63 0.40 1245
22 18 4.35 2.43 0.56 1048 4.16 2.33 0.56 1100 4.00 2.24 0.56 1153 3.85 2.15 0.56 1205
22 20 4.53 1.99 0.44 1100 4.35 1.91 0.44 1166 4.22 1.86 0.44 1192 4.07 1.79 0.44 1245
22 22 4.72 1.51 0.32 1140 4.55 1.46 0.32 1212 4.44 1.42 0.32 1245 4.26 1.36 0.32 1297
23 18 4.35 2.61 0.60 1048 4.16 2.50 0.60 1100 4.00 2.40 0.60 1153 3.85 2.31 0.60 1205
23 20 4.53 2.18 0.48 1100 4.35 2.09 0.48 1166 4.22 2.02 0.48 1192 4.07 1.95 0.48 1245
23 22 4.72 1.70 0.36 1140 4.55 1.64 0.36 1212 4.44 1.60 0.36 1245 4.26 1.53 0.36 1297
24 18 4.35 2.78 0.64 1048 4.16 2.66 0.64 1100 4.00 2.56 0.64 1153 3.85 2.46 0.64 1205
24 20 4.53 2.36 0.52 1100 4.35 2.26 0.52 1166 4.22 2.19 0.52 1192 4.07 2.12 0.52 1245
24 22 4.72 1.89 0.40 1140 4.55 1.82 0.40 1212 4.44 1.78 0.40 1245 4.26 1.70 0.40 1297
24 24 4.96 1.39 0.28 1192 4.77 1.34 0.28 1258 4.66 1.31 0.28 1297 4.51 1.26 0.28 1362
25 18 4.35 2.96 0.68 1048 4.16 2.83 0.68 1100 4.00 2.72 0.68 1153 3.85 2.62 0.68 1205
25 20 4.53 2.54 0.56 1100 4.35 2.43 0.56 1166 4.22 2.36 0.56 1192 4.07 2.28 0.56 1245
25 22 4.72 2.08 0.44 1140 4.55 2.00 0.44 1212 4.44 1.95 0.44 1245 4.26 1.87 0.44 1297
25 24 4.96 1.59 0.32 1192 4.77 1.53 0.32 1258 4.66 1.49 0.32 1297 4.51 1.44 0.32 1362
26 18 4.35 3.13 0.72 1048 4.16 3.00 0.72 1100 4.00 2.88 0.72 1153 3.85 2.77 0.72 1205
26 20 4.53 2.72 0.60 1100 4.35 2.61 0.60 1166 4.22 2.53 0.60 1192 4.07 2.44 0.60 1245
26 22 4.72 2.26 0.48 1140 4.55 2.18 0.48 1212 4.44 2.13 0.48 1245 4.26 2.04 0.48 1297
26 24 4.96 1.78 0.36 1192 4.77 1.72 0.36 1258 4.66 1.68 0.36 1297 4.51 1.63 0.36 1362
26 26 5.11 1.23 0.24 1258 4.96 1.19 0.24 1323 4.88 1.17 0.24 1362 4.74 1.14 0.24 1402
27 18 4.35 3.30 0.76 1048 4.16 3.16 0.76 1100 4.00 3.04 0.76 1153 3.85 2.92 0.76 1205
27 20 4.53 2.90 0.64 1100 4.35 2.78 0.64 1166 4.22 2.70 0.64 1192 4.07 2.60 0.64 1245
27 22 4.72 2.45 0.52 1140 4.55 2.37 0.52 1212 4.44 2.31 0.52 1245 4.26 2.21 0.52 1297
27 24 4.96 1.98 0.40 1192 4.77 1.91 0.40 1258 4.66 1.86 0.40 1297 4.51 1.81 0.40 1362
27 26 5.11 1.43 0.28 1258 4.96 1.39 0.28 1323 4.88 1.37 0.28 1362 4.74 1.33 0.28 1402
28 18 4.35 3.48 0.80 1048 4.16 3.33 0.80 1100 4.00 3.20 0.80 1153 3.85 3.08 0.80 1205
28 20 4.53 3.08 0.68 1100 4.35 2.96 0.68 1166 4.22 2.87 0.68 1192 4.07 2.77 0.68 1245
28 22 4.72 2.64 0.56 1140 4.55 2.55 0.56 1212 4.44 2.49 0.56 1245 4.26 2.38 0.56 1297
28 24 4.96 2.18 0.44 1192 4.77 2.10 0.44 1258 4.66 2.05 0.44 1297 4.51 1.99 0.44 1362
28 26 5.11 1.63 0.32 1258 4.96 1.59 0.32 1323 4.88 1.56 0.32 1362 4.74 1.52 0.32 1402
29 18 4.35 3.65 0.84 1048 4.16 3.50 0.84 1100 4.00 3.36 0.84 1153 3.85 3.23 0.84 1205
29 20 4.53 3.26 0.72 1100 4.35 3.13 0.72 1166 4.22 3.04 0.72 1192 4.07 2.93 0.72 1245
29 22 4.72 2.83 0.60 1140 4.55 2.73 0.60 1212 4.44 2.66 0.60 1245 4.26 2.55 0.60 1297
29 24 4.96 2.38 0.48 1192 4.77 2.29 0.48 1258 4.66 2.24 0.48 1297 4.51 2.17 0.48 1362
29 26 5.11 1.84 0.36 1258 4.96 1.78 0.36 1323 4.88 1.76 0.36 1362 4.74 1.70 0.36 1402
30 18 4.35 3.83 0.88 1048 4.16 3.66 0.88 1100 4.00 3.52 0.88 1153 3.85 3.39 0.88 1205
30 20 4.53 3.44 0.76 1100 4.35 3.30 0.76 1166 4.22 3.21 0.76 1192 4.07 3.09 0.76 1245
30 22 4.72 3.02 0.64 1140 4.55 2.91 0.64 1212 4.44 2.84 0.64 1245 4.26 2.72 0.64 1297
30 24 4.96 2.58 0.52 1192 4.77 2.48 0.52 1258 4.66 2.42 0.52 1297 4.51 2.35 0.52 1362
30 26 5.11 2.04 0.40 1258 4.96 1.98 0.40 1323 4.88 1.95 0.40 1362 4.74 1.89 0.40 1402
31 18 4.35 4.00 0.92 1048 4.16 3.83 0.92 1100 4.00 3.68 0.92 1153 3.85 3.54 0.92 1205
31 20 4.53 3.63 0.80 1100 4.35 3.48 0.80 1166 4.22 3.37 0.80 1192 4.07 3.26 0.80 1245
31 22 4.72 3.21 0.68 1140 4.55 3.09 0.68 1212 4.44 3.02 0.68 1245 4.26 2.89 0.68 1297
31 24 4.96 2.78 0.56 1192 4.77 2.67 0.56 1258 4.66 2.61 0.56 1297 4.51 2.53 0.56 1362
31 26 5.11 2.25 0.44 1258 4.96 2.18 0.44 1323 4.88 2.15 0.44 1362 4.74 2.08 0.44 1402
32 18 4.35 4.17 0.96 1048 4.16 4.00 0.96 1100 4.00 3.84 0.96 1153 3.85 3.69 0.96 1205
32 20 4.53 3.81 0.84 1100 4.35 3.65 0.84 1166 4.22 3.54 0.84 1192 4.07 3.42 0.84 1245
32 22 4.72 3.40 0.72 1140 4.55 3.28 0.72 1212 4.44 3.20 0.72 1245 4.26 3.06 0.72 1297
32 24 4.96 2.97 0.60 1192 4.77 2.86 0.60 1258 4.66 2.80 0.60 1297 4.51 2.71 0.60 1362
32 26 5.11 2.45 0.48 1258 4.96 2.38 0.48 1323 4.88 2.34 0.48 1362 4.74 2.27 0.48 1402

CAPACITY: 3.7 kW INPUT : 1310 W SHF : 0.70

PERFORMANCE DATA
COOL operation(220V)

MCF-13NV - : MUCF-13NV -

E3E3

NOTE Q : Total capacity (kW) SHF : Sensible heat factor

SHC : Sensible heat capacity (kW) INPUT : Total power input (W)