Mitsubishi MCFH-A12WV- E1 (WH), MCFH-A18WV- E1 (WH), MCFH-A24WV- E1 (WH) Service Manual

Revision A:

● Power input of SPECIFICATION has modified.

● Model name of remote controller has been

FLOOR AND CEILING TYPE AIR CONDITIONERS

added to PARTS LIST.

Please void OB336.

No. OB336

REVISED EDITION-A

SERVICE MANUAL

Wireless type

Models

MCFH-A12WV- E1 (WH)

MCFH-A18WV- E1 (WH)

MCFH-A24WV- E1 (WH)

(When installed on the floor)

Indication of model name

MCFH-A12WV- E1 MCFH-A18WV- E1 MCFH-A24WV- E1

(When installed on the ceiling)

CONTENTS

1.TECHNICAL CHANGES ················

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

3.SPECIFICATION····················

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

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

6.WIRING DIAGRAM ··················

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

8.SERVICE FUNCTIONS ·················

9.TROUBLESHOOTING·················

10.DISASSEMBLY INSTRUCTIONS·············

11.PARTS LIST······················

12.OPTIONAL PARTS···················

NOTE:

•This manual describes technical data of indoor units

•As for outdoor units MUCFH-A18/A24WV- E1 , refer to the service manual OB337 REVISED EDITION-A.

•As for outdoor unit MUH-A12YV- E1 , refer to the service manual OB331 REVISED EDITION-A.

•As for outdoor units MXZ-A18/A26/A32WV- E1 , refer to the service manual OB319.

Revision A:

•Power input of SPECIFICATION has modified.

•Model name of remote controller has been added to PARTS LIST.

1 TECHNICAL CHANGES

MCFH-13NV- E4 MCFH-A12WV- E1

MCFH-18NV- E3 MCFH-A18WV- E1

1.Rated voltage has changed. (220-240V 230V)

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

3.Horizontal vane has changed.

4.Terminal block has changed.

5.Indoor heat exchanger has changed.

6.Remote controller has changed. Econo cool operation has been added.

1.Rated voltage has changed. (220-240V 230V)

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

3.Horizontal vane has changed.

4.Terminal block has changed.

5.Indoor heat exchanger has changed.

6.Remote controller has changed. Econo cool operation has been added.

7.Indoor fan motor has changed. (RB4V25-AB RB4V25-AC) 7. Gas of union has changed. ({15.88 {12.7)

8.Indoor fan motor has changed. (RB4V36-AB RB4V36-AC)

MCFH-24NV- E3 MCFH-A24WV- E1

1.Rated voltage has changed. (220-240V 230V)

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

3.Horizontal vane has changed.

4.Terminal block has changed.

5.Indoor heat exchanger has changed.

6.Remote controller has changed. Econo cool operation has been added.

7.Liquid of union has changed. ({9.52 {6.35)

8.Indoor fan motor has changed. (RB4V36-AB RB4V36-DB)

2 PART NAMES AND FUNCTIONS

MCFH-A12WV - E1 MCFH-A18WV - E1 MCFH-A24WV - E1

INDOOR UNIT

(When installed on the floor)

Vertical vanes

Horizontal vane

Operation indicator lamp

Receiving section

Front panel

Air cleaning filter

(white bellows type)(option)

Air inlet

Air filter

Deodorizing filter

(gray sponge type)(option)

Operation section

(When the air inlet grille is opened.)

Remote controller

(When installed on the ceiling)

Emergency operation switch

ACCESSORIES

	Item	Q'ty
	Installation plate	2
	Unit fixing screw	2
	5 o 12mm
	Wireless remote	1
	controller
	Remote controller	1
	mounting hardware
	Fixing screw for	2
	3.5 o 16mm (Black)
	Battery (AAA) for	2
	remote controller
	Drain hose	1
	Drain pipe cover	1
	Knockout cover	1
	Screw for 4 o 10mm	2

2

MCFH-A12WV - E1

MCFH-A18WV - E1

MCFH-A24WV - E1

REMOTE CONTROLLER

Signal transmitting section

Operation display section

OPERATE /STOP (ON /OFF)button

		PM
		AM
ON/OFF	TOO	TOO
	WARM	COOL

TEMPERATURE buttons

Open the front lid.

VANE CONTROL button

OPERATION SELECT button ECONO COOL button

RESET button

Indication of remote controller model is on back.

AM

ON/OFF	TOO	TOO
	WARM	COOL

	FAN	STOP	FAN SPEED CONTROL button
			OFF-TIMER button
	I FEEL COOL
	VANE	START	ON-TIMER button
	HEAT DRY
	MODE	HR.	HR. button
	ECONO COOL	MIN.	MIN. button
			(TIME SET button)
	RESET CLOCK		CLOCK SET button

3

3 SPECIFICATION

Indoor model

Function

Power supply

Capacity Air flow(High/Med.W/LowW)

			Power outlet
	Electrical	data	Running current
			Power input
			Auxiliary heater
			Power factor
			Fan motor current
	Fan	motor	Model
			Winding
			resistance(at20:)
			Dimensions WOHOD
			Weight
			Air direction
	Special	remarks	Sound level(High/Med.W/LowW)
			Fan speed(High/Med.W/LowW)
			Fan speed regulator
			Thermistor RT11(at25:)
			Thermistor RT12(at25:)
			Remote controller model

	MCFH-A12WV- E1			MCFH-A18WV- E1			MCFH-A24WV- E1
	Cooling		Heating	Cooling		Heating	Cooling		Heating
				Single phase
				230V, 50Hz
K /h	780/636W/492W			840/696W/570W			840/744W/642W
A		10			10			10
A		0.30			0.36			0.36
W		66			80			80
A(kW)	—		—	—		—	—		—
%		96			97			97
A		0.30			0.36			0.36
	RB4V25-AC			RB4V36-AC			RB4V36-DB

WHT-BLK 182.2 BLK-YLW 68.9 WHT-BLK 82.9 BLK-YLW 65.6 WHT-BLK 84.0 BLK-YLW 46.2

"YLW-BLU 47.5 BLU-BRN 31.5 YLW-BLU 36.0 BLU-BRN 27.0 YLW-BLU 37.2 BLU-BRN 45.2

	BRN-RED 22.9	BRN-RED 13.7	BRN-RED 13.6
mm		1100 650 180
kg	25	25	25
	5	5	5
dB	46/41W/36W	48/44W/39W	48/45W/42W
rpm	1,240/1,060/845	1,320/1,145/960	1,320/1,190/1,060
	3	3	3
k"	10	10	10
k"	10	10	10
	KG04C	KG04C	KG04C

NOTE: Test conditions are based on ISO 5151
Cooling : Indoor DB27°C WB19°C	Heating : Indoor	DB20°C WB 15°C
Outdoor DB35°C WB(24°C)	Outdoor	DB 7°C WB 6°C
Indoor-Outdoor piping length : 5 m
w Reference value

4

4

NOISE CRITERIA CURVES

MCFH-A12WV - E1

MCFH-A18WV - E1

SPEED

SPL(dB(A))

LINE

SPEED

SPL(dB(A))

LINE

High

46

High

48

Test conditions,

Test conditions,

Cooling : DB 27: WB 19:\

Cooling : DB 27: WB 19:\

90

Heating : DB 20: WB 15:

90

Heating : DB 20: WB 15:

BAR

BAR

MICRO

80

MICRO

80

redB0.0002

60

redB0.0002

60

70

NC-70

70

NC-70

LEVEL,

NC-60

LEVEL,

NC-60

PRESSURE

50

PRESSURE

50

NC-50

NC-50

40

40

SOUND

NC-40

SOUND

NC-40

30

30

BAND

NC-30

BAND

NC-30

20

APPROXIMATE

20

APPROXIMATE

OCTAVE

THRESHOLD OF

OCTAVE

THRESHOLD OF

HEARING FOR

NC-20

HEARING FOR

NC-20

CONTINUOUS

CONTINUOUS

10

NOISE

10

NOISE

63

125

250

500

1000

2000

4000

8000

63

125

250

500

1000

2000

4000

8000

BAND CENTER FREQUENCIES, Hz

BAND CENTER FREQUENCIES, Hz

MCFH-A24WV - E1

SPEED

SPL(dB(A))

LINE

High

48

INDOOR UNIT

Test conditions,

Cooling : DB 27: WB 19:\

MICROPHONE

90

Heating : DB 20: WB 15:

WALL

BAR

1m

1m

MICRO

80

0.0002redB

70

NC-70

LEVEL,

60

NC-60

PRESSURE

50

NC-50

40

SOUND

NC-40

30

BAND

NC-30

20

APPROXIMATE

OCTAVE

THRESHOLD OF

HEARING FOR

NC-20

CONTINUOUS

10

NOISE

63

125

250

500

1000

2000

4000

8000

BAND CENTER FREQUENCIES, Hz

5

5 OUTLINES AND DIMENSIONS

MCFH-A12WV - E1

MCFH-A18WV - E1

MCFH-A24WV - E1

INDOOR UNIT

80.8

(When installed on the floor)

50cm or more

50cm or more

50cm		650	616.5
	(When installed on the ceiling)
	or
	more		170
	more	50cm or more	42.5
	100cm or

58

162

Unit: mm

114

906	16	112.8

	93
	77
	113	143
1100		180
19	Gas line
	12.7 (MCFH-A12/A18WV)
Liquid line	15.88 (MCFH-A24WV)
6.35

Wireless remote controller

6

6 WIRING DIAGRAM

MCFH-A12WV - E1	MODELS WIRING DIAGRAM
MCFH-A18WV - E1
MCFH-A24WV - E1
INDOOR UNIT	TB1
PE		GRN/YLW
POWER	N		BLU
SUPPLY				1				CN
~/N 230V					HIC1
				2
50Hz			RED					112
	L			3
							LDCOM
			CN201			NR11
CIRCUIT BREAKER			BRN		TAB12			LDC11
							C11 LDC12
					TRANS		X144	LDFH
	TB2							LDFM
		BLU					SR143
TO OUTDOOR								LDFL
	N				F11		SR142
UNIT
CONNECTING	3		CN	CN	CN		SR141 LDFVL
12V			101	113	151 ELECTRONIC CONTROL P.C BOARD
					6
			5
				4	5
			5		MV
	REMOTE		DISP/	SW/THERMO
			RECEIVER	P.C.BOARD
	CONTROLLER
			P.C.BOARD
					RT11

2	2		RT12
	WHT	1	WHT
	ORN	2	ORN
	RED	3	RED
	BLK	4	BLK MF
	YLW	5	YLW
	BLU	6	BLU
	BRN	7	BRN
		8	GRN/YLW

SYMBOL		NAME	SYMBOL	NAME	SYMBOL	NAME
C11	INDOOR FAN CAPACITOR		MV	VANE MOTOR	SR141~SR143 SOLID STATE RELAY
F11	FUSE (3.15A)		NR11	VARISTOR	TB1, TB2	TERMINAL BLOCK
HIC1	DC/DC CONVERTER		RT11	ROOM TEMPERATURE THERMISTOR	X144	RELAY
MF	INDOOR FAN MOTOR(INNER FUSE)		RT12	INDOOR COIL THERMISTOR
NOTES: 1.About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.
2.Use copper conductors only. (For field wiring)
3.Symbols below indicate.
	: Terminal block	: Connector

7

7

REFRIGERANT SYSTEM DIAGRAM

Unit : mm

MCFH-A12WV- E1

MCFH-A18WV- E1

INDOOR UNIT

Refrigerant pipe [12.7

INDOOR UNIT

Refrigerant pipe [12.7

(with heat insulator)

(with heat insulator)

Indoor

Indoor

heat

Distributor

Flared connection

heat

Distributor

exchanger

exchanger

Flared connection

Indoor coil

Indoor coil

thermistor

thermistor

RT12

RT12

Room temperature

Room temperature

thermistor

thermistor

RT11

Flared connection

RT11

Flared connection

Refrigerant pipe

Refrigerant pipe

[6.35

[6.35

(with heat insulator)

(with heat insulator)

MCFH-A24WV- E1

INDOOR UNIT		Refrigerant pipe [15.88
		(with heat insulator)
Indoor
heat	Distributor
exchanger		Flared connection
Indoor coil
thermistor
RT12

Room temperature	Flared connection
thermistor
RT11

Refrigerant pipe [6.35

(with heat insulator)

Refrigerant flow in cooling

Refrigerant flow in heating

8