Mitsubishi MUX-19TV-E1, MUX-20TV-E1, MUX-25TV-E1 Service Manual

SPLIT-TYPE,AIR CONDITIONERS

No. OB284

SERVICE MANUAL

Multi system type

Models

MUX-19TV - E1

MUX-20TV - E1

MUX-25TV - E1

MUX-19TV - E1 MUX-20TV - E1 MUX-25TV - E1

CONTENTS

1.TECHNICAL CHANGES ················

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

3.INDOOR/OUTDOOR

CORRESPONDENCE TABLE ··············

4.SPECIFICATION····················

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

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

7.WIRING DIAGRAM ··················

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

9.PERFORMANCE CURVES ···············

10.TROUBLESHOOTING·················

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

12.PARTS LIST······················

13.OPTIONAL PARTS···················

This manual describes technical data of outdoor unit.

For indoor unit refer to the service manuals No.OB227 REVISED EDITION-B and OB252 REVISED EDITION-A of corresponding models.

1 TECHNICAL CHANGES

MUX-19TV - E1

MUX-20TV - E1

MUX-25TV - E1

New models

2 PART NAMES AND FUNCTIONS

OUTDOOR UNIT

MUX-19TV - E1

MUX-20TV - E1

MUX-25TV - E1

Air inlet (Back and side)

Piping

Drainage hose

Air outlet

2

3 INDOOR / OUTDOOR CORRESPONDENCE TABLE

Combination of the connectable indoor units

OUTDOOR UNIT

MUX-19TV- E1		MUX-20TV- E1			MUX-25TV- E1
A:07,	B:12	A:09,	B:09,	C:09	A:12,	B:12

There is no combination other than this table.

4 SPECIFICATION

Outdoor model

Outdoor unit power supply

Indoor unit No.

	Capacity	Outdoor air flow
			K /h
		Capacity	kW
		Dehumidification	R/h
		Power outlet	A
		Running current	A
	Electrical data	Power input	W
		Auxiliary heater	A(kW)
		Power factor	%
		Starting current	A
		Compressor motor current	A
		Fan motor current	A
	Coefficient of performance(C.O.P)
	Compressor	Model	"
		Output
			W
		Winding
		resistance(at20:)
	Fan motor	Model
		Winding	"
		resistance(at20:)
		Dimensions WOHOD	mm
		Weight	kg
		Sound level	dB
	Special remarks	Fan speed	rpm
		Fan speed regulator	kg
		Refrigerant filling
		capacity(R22)
		Refrigerating oil (Model)	cc

NOTE: Test conditions are based on ISO 5151.

Cooling : Indoor	DB27°C	/ WB19°C
Outdoor	DB35°C	/ WB(24°C)

MUX-19TV - E1

Single phase 230V, 50Hz

Opetate 1 unit	Opetate 1 unit	Opetate 2 unit
A	B	A+B
3.5	2.2	3.5+2.2
1.6	0.8	1.6+0.8
	Hi:2,460 / Lo:1,920
	15
6.01	3.33	8.94
1,280	745	2,005
	—
92.6	97.3	97.5
	45.6
5.68	3.00	8.37
0.33	0.33	0.57
2.65	2.82	2.74

RH220VHAT (Room A) / RH135VHAT (Room B)

1,050 / 650

C-R 2.13/4.18

C-S 3.91/5.76

RA6V60-DA

WHT-BLK 90 BKL-YLW 54

BLK-RED 146

840 640 330

63

52

High:730 / Low:580

2

Room A : 0.87

Room B :1.0

520(MS56) / 300(MS56)

3

Outdoor model

MUX-20TV - E1

Outdoor unit power supply

Single phase

230V, 50Hz

Indoor unit No.

Opetate 1 unit

Opetate 1 unit

Opetate 2 unit

Opetate 2 unit

Opetate 3 unit

A

B or C

B+C

A+B or A+C

A+B+C

Capacity

Outdoor air flow

K /h

2.5

High: 2,460 / Low: 1,920

2.4+1.75 2

Capacity

kW

2.7

1.75 2

2.4+2.7

Dehumidification

R/h

1.1

1.2

0.3 2

0.9+1.2

0.9+0.3 2

Power outlet

A

15

Running current

A

3.43

4.23

4.36

7.56

7.79

Electrical data

Power input

W

775

965

1,000

1,740

1,785

Auxiliary heater

A(kW)

—

Power factor

%

98.2

99.2

99.7

99.9

99.6

Starting current

A

40

Compressor motor current

A

3.10

3.90

4.03

6.99

7.22

Fan motor current

A

0.33

0.33

0.33

0.57

0.57

Coefficient of performance(C.O.P)

3.09

2.70

3.27

2.82

3.12

Compressor

Model

RH140VHAT (Room A) / RH174VHAT (Room B,C)

Output

"

700/800

W

Winding

C-R 4.03/3.30

resistance(at20:)

C-S 5.71/5.80

Fan motor

Model

RA6V60-DA

Winding

"

WHT-BLK 90 BLK-YLW 54

resistance(at20:)

BLK-RED 146

Dimensions WOHOD

mm

840 640 330

Weight

kg

62

Sound level

dB

52

Fan speed

rpm

High: 730 / Low: 580

Special remarks

Fan speed regulator

2

Refrigerant filling

kg

Room A : 0.8

capacity(R22)

Room B,C : 0.96

Refrigerating oil (Model)

cc

300(MS56) / 300(MS56)

NOTE: Test conditions are based on ISO 5151.

Cooling : Indoor

DB27°C / WB19°C

Outdoor

DB35°C / WB(24°C)

4

Outdoor model

Outdoor unit power supply

Indoor unit No.

	Capacity	Outdoor air flow
			K /h
		Capacity	kW
		Dehumidification	R/h
		Power outlet	A
		Running current	A
	Electrical data	Power input	W
		Auxiliary heater	A(kW)
		Power factor	%
		Starting current	A
		Compressor motor current	A
		Fan motor current	A
	Coefficient of performance(C.O.P)
	Compressor	Model	"
		Output
			W
		Winding
		resistance(at20:)
	Fan motor	Model
		Winding	"
		resistance(at20:)
		Dimensions WOHOD	mm
		Weight	kg
		Sound level	dB
	Special remarks	Fan speed	rpm
		Fan speed regulator	kg
		Refrigerant filling
		capacity(R22)
		Refrigerating oil (Model)	cc

NOTE: Test conditions are based on ISO 5151.

Cooling : Indoor	DB27°C	/ WB19°C
Outdoor	DB35°C	/ WB(24°C)

MUX-25TV - E1

Single phase 230V, 50Hz

Opetate 1 unit	Opetate 2 unit
A or B	A+B
3.5	3.5 2
1.6	1.6 2
High:2,760 / Low:1,920
	25
6.11	12.42
1,350	2,760
	—
96.1	96.6
	56
5.79	11.81
0.32	0.61
2.52	2.46

RH231VHAT 2

1,100 2

C-R 2.13

C-S 3.91

RA6V60-EA

WHT-BLK 67 BLK-YLW 75

BLK-RED 73

840 640 330

65

54

High: 810 / Low: 580

2

Room A: 0.9

Room B: 0.9

520(MS56) / 520(MS56)

5

5 NOISE CRITERIA CURVES

MUX-19TV - E1						SPEED		SPL(dB(A))	LINE
MUX-20TV - E1							High	52
					Test conditions.
	90					Cooling :DB35: WB24:
MICRO BAR	80
	70
dB re 0.002									NC-70
	60
LEVEL,									NC-60
PRESSURE	50
									NC-50
BAND SOUND	40
									NC-40
	30
OCTAVE
									NC-30
	20	APPROXIMATE
		TERESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
		NOISE
	10	63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

MUX-25TV - E1						SPEED		SPL(dB(A))	LINE
							High	54
					Test conditions.
	90					Cooling :DB35: WB24:
MICRO BAR	80
	70
dB re 0.002									NC-70
	60
LEVEL,									NC-60
PRESSURE	50
									NC-50
BAND SOUND	40
									NC-40
	30
OCTAVE
									NC-30
	20	APPROXIMATE
		TERESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
		NOISE
	10	63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

6

6 OUTLINES AND DIMENSIONS

OUTDOOR UNIT	Unit: mm
MUX-19TV- E1

			500
Drainage		272.9	438.4
3hoies {33			Air in
125.6	34

Air in
100.3	40
	Air out
	840
	121.3

319.8

OUTDOOR UNIT

MUX-20TV- E1

			500
Drainage		272.9	438.4
3hoies {33			Air in
125.6	34

Air in
100.3	40
	Air out
	840
	121.3

319.8

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

100mm or more 100mm or more 200mm or more if

there are obstacles to both sides

330	360.6	Open as a rule
		500mm or more if the back,		350mm or more
		both sides and top are open
61.7		Service panel
		Liquid refrigerant
		pipe joint
		Refrigerant pipe
		(flared) {6.35
640		°		Gas refrigerant
	°	10		pipe joint
	10
		} B UNIT	5050	Refrigerant pipe
				(flared) {9.52
		} A UNIT	50
66.2				Gas refrigerant
80.7		264.2	75.8
				pipe joint

Refrigerant pipe

(flared) {12.7

Unit: mm

330

360.6

61.7

		°
640	°	10
	10

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

100mm or more 100mm or more 200mm or more if

there are obstacles to both sides

Open as a rule

500mm or more if the back, 350mm or more both sides and top are open

Service panel Liquid refrigerant pipe joint Refrigerant pipe (flared) {6.35

} C UNIT 50

} A UNIT	50
	505050
} B UNIT

66.2	75.8	Gas refrigerant
		pipe joint

264.2

Refrigerant pipe (flared) {9.52

7

OUTDOOR UNIT	Unit: mm
MUX-25TV- E1

			500
Drainage		272.9	438.4
3hoies {33			Air in
125.6	34			330
	Air in
	100.3			40
			Air out
			840	61.7
			121.3

640

319.8

80.7

100mm or more

360.6

Open as a rule

500mm or more if the back, both sides and top are open

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

350mm or more

		Service panel
		Liquid refrigerant
		pipe joint
	°	Refrigerant pipe
		(flared) {6.35
°	10
10		} A UNIT 505050
		} B UNIT
		75.8	Gas refrigerant
	264.2		pipe joint

Refrigerant pipe (flared) {12.7

8

7	WIRING DIAGRAM
MUX-19TV - E1		MUX-25TV - E1
OUTDOOR UNIT MODELS WIRING DIAGRAM
POWER SUPPLY		L	TB1	BRN	2 TB4
~/N
230V		N		BLU	1
50Hz
			PE	GRN/YLW		BLU	BRN			BRN
CIRCUIT BREAKER
						3 2 1		CN90 OUTDOOR CONTROL PC BOARD
TO INDOOR		2	TB2	BLU	3	CN71	F61	(3.15A)
UNIT A
		1			2
CONNECTING				YLW
12V					1
		2
TO INDOOR				BLU	3	CN73		NR61
UNIT B
		1			2
CONNECTING				ORN						T61
12V					1
							SR861	SR862
						CN91 1 2 3 4 5 6			LD2	LD1
							WHT YLW	BLK RED	RED	RED
										C61
								MF61

BLU

BRN		BLU
	X521
X522	3	4
3	4
X522	X521

C1 RED

S

BLK R MC1 C

WHT

C2 RED

S

BLK R MC2 C

WHT

SYMBOL	NAME	SYMBOL	NAME	SYMBOL	NAME
C1	COMPRESSOR CAPACITOR (MC1)	MC2	COMPRESSOR (INNER PROTECTOR)	TB1	TERMINAL BLOCK
C2	COMPRESSOR CAPACITOR (MC2)	MF61	FAN MOTOR (INNER PROTECTOR)	TB2~TB4	TERMINAL BLOCK
C61	FAN MOTOR CAPACITOR	NR61	SURGE ABSORBER	T61	TRANSFORMER
F61	FUSE (3.15A)	SR861	FAN MOTOR RELAY	X521	COMPRESSOR CONTACTOR (MC1)
MC1	COMPRESSOR (INNER PROTECTOR)	SR862	FAN MOTOR RELAY	X522	COMPRESSOR CONTACTOR (MC2)
NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.					VG79B082H01

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

3.Symbols below indicate.

/: Terminal block, : Connector

MUX-20TV - E1

OUTDOOR UNIT MODEL WIRING DIAGRAM

POWER SUPPLY

L

TB1

BRN 2 TB4

~/N

230V

N

BLU 1

50Hz

BLU

BRN

BRN

PE

GRN/YLW

CIRCUIT BREAKER

3 2 1

CN90 OUTDOOR CONTROL PC BOARD

CONNECTING

2

TB2

YLW

2

CN71

F61

(3.15A)

1

TO INDOOR

BLU

3

UNIT A

12V

2

1

TO INDOOR

BLU

3

CN73

NR61

1

T61

CONNECTING

ORN

2

UNIT B

12V

1

SR861

SR862

SR863

TO INDOOR

2

TB3

BLU

2

CN74

CONNECTING

1

WHT

CN81

UNIT C

3

12V

1

CN91 1 2 3 4 5 6

LD2

LD1

1 2 3

WHT YLW

BLK

RED

RED

RED

BLU

BLU

C61

21RB

MF61

BLU

	BRN		BLU
		X521
X522		3	4
3	4
X522	X521
SR866		SR865
CN85		CN86
1 2 3		1 2 3
BLU	BLU	BLU	BLU
21R3		21R4

C1 RED

S

BLK R MC1 C

WHT

C2 RED

S

BLK R MC2 C

WHT

	SYMBOL	NAME	SYMBOL	NAME	SYMBOL	NAME
	C1	COMPRESSOR CAPACITOR (MC1)	NR61	SURGE ABSORBER	TB2~TB4	TERMINAL BLOCK
	C2	COMPRESSOR CAPACITOR (MC2)	SR861	FAN MOTOR RELAY	T61	TRANSFORMER
	C61	FAN MOTOR CAPACITOR	SR862	FAN MOTOR RELAY	X521	COMPRESSOR CONTACTOR (MC1)
	F61	FUSE (3.15A)	SR863	RELAY (21RB)	X522	COMPRESSOR CONTACTOR (MC2)
	MC1	COMPRESSOR (INNER PROTECTOR)	SR865	RELAY (C) (21R4)	21RB	SOLENOID COIL
	MC2	COMPRESSOR (INNER PROTECTOR)	SR866	RELAY (B) (21R3)	21R3	SOLENOID COIL (B)
	MF61	FAN MOTOR (INNER PROTECTOR)	TB1	TERMINAL BLOCK	21R4	SOLENOID COIL (C)
NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.						VG79B081H01

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

3.Symbols below indicate.

/: Terminal block, : Connector

9

8

REFRIGERANT SYSTEM DIAGRAM

MSC-07RV- E3

MUX-19TV- E1

Unit: mm

MSC-12RV- E3

INDOOR UNIT

OUTDOOR UNIT

Room

temperature

Refrigerant pipe

thermistor

{12.7

RT11

(With insulation)

Indoor

Stop valve

UNIT A

heat

with service port

exchanger

MSC-12RV

E3

Flared connection

Indoor coil

Stop valve

Compressor(MC1)

thermistor

RT12

Capillary tube

Outdoor

Refrigerant pipe

heat

{6.35

{3.0 {1.6 660

(With insulation)

exchanger

Room

temperature

Refrigerant pipe

thermistor

{9.52

RT11

(With insulation)

Indoor

Stop valve

UNIT B

heat

with service port

exchanger

MSC-07RV

E3

Flared connection

Indoor coil

Stop valve

Compressor(MC2)

thermistor

RT12

Capillary tube

Refrigerant pipe

{3.0 {1.4 810

{6.35

(With insulation)

MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE

Indoor unit B

MSC-07RV E3

Indoor unit A

MSC-12RV E3

L

H

L

H

Outdoor unit

MUX-19TV

E1

Additional piping max. length 15m

UNIT No.

Pipe length

Height difference (H)

No. of bends

Max. limits

A , B

L

15m

10m

10

ADDITIONAL REFRIGERANT CHARGE (R22:g)

Outdoor unit

Refrigerant piping length (one way)

precharged (g)

7m

8m

9m

10m

11m

12m

13m

14m

15m

A

UNIT

870

0

15

30

45

60

75

90

105

120

B

UNIT

1,000

PIPING PREPARATION

1 Table below shows the specifications of pipes commercially available.

			UNIT No.				Pipe	Outside diameter	Insulation	Insulation material
								mm	thickness
		and				UNIT	For liquid	6.35	8 mm
	A				B					Heat resisting foam plastic
					UNIT		For gas	9.52	8 mm
			B							0.045 specific gravity
					UNIT		For gas	12.7	8 mm
			A

2 Ensure that the 2 refrigerant pipes are well insulated to prevent condensation. 3 Refrigerant bending radius must be 10cm or more.

10

Unit: mm

MSC-09RV- E3

INDOOR UNIT

MUX-20TV- E1

OUTDOOR UNIT

UNIT A

MSC-09RV E3

UNIT B

MSC-09RV E3

UNIT C

MSC-09RV E3

Room

	temperature	Refrigerant pipe
	thermistor	{9.52
	RT11
		(With insulation)

Indoor			Stop valve
heat			with service port
exchanger
	Flared connection
Indoor coil		Stop valve		Compressor(MC1)
thermistor
RT12
	Refrigerant pipe		Capillary tube
Room	{6.35		{3.0 {1.4 450		Outdoor
	(With insulation)				heat
temperature
					exchanger
thermistor	Refrigerant pipe	Stop valve		Solenoid valve
RT11	{9.52	with service port
				21RB
	(With insulation)
Indoor				Capillary tube
heat				{3.0 {1.6 1,000
exchanger	Flared connection
		Stop valve	Solenoid valve
			21R3
Indoor coil				Compressor(MC2)
thermistor	Refrigerant pipe		Capillary tube
RT12
	{6.35		{3.0 {1.6 900
Room
	(With insulation)			Capillary tube
temperature
				{3.0 {1.8 450
thermistor	Refrigerant pipe
RT11
	{9.52
Indoor		Stop valve
heat
		with service port
exchanger	Flared connection			Refrigerant	flow

			Solenoid valve
			21R4
	Indoor coil
	thermistor	Stop valve	Capillary tube
	RT12
		Refrigerant pipe	{3.0 {1.6 900
		{6.35

(With insulation)

11

MUX-20TV- E1

MAX.REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE

Indoor unit C		Indoor unit B		Indoor unit A
MSC-09RV - E3		MSC-09RV - E3		MSC-09RV - E3

LC

H

LB

H

LA

H

Outdoor unit

MUX-20TV - E1

		UNIT No.		Pipe length			Height difference (H)	No. of bends
	Max.	A	LA		15m		10m		10
		B	LB	15m	LB	Total	10m	10	Total
	limits
					+
			LC	15m		30m	10m	10	15
		C			LC

Note: The length of piping to individual units (A,B,C) should not exceed 10 meters.

If units B and C are linked, the maximum combined length of piping should not exceed 15 meters.

ADDITIONAL REFRIGERANT CHARGE (R22:g)

	Outdoor unit										Refrigerant piping length (one way)
A unit	precharged (g)		7m				8m			9m		10m					11m				12m			13m			14m				15m
	800		0				15			30			45				60			75			90				105			120
	Outdoor unit								Refrigerant piping length (one way, 2 unit total)
B unit + C unit	precharged (g)	10m		11m	12m		13m	14m		15m	16m	17m		18m	19m			20m	21m		22m	23m		24m	25m	26m		27m	28m		29m	30m
	960	0		10	20		30	40		50	60	70		80	90			100	110		120	130		140	150	160		170	180		190	200

PIPING PREPARATION

1Table below shows the specifications of pipes commercially available.

	UNIT No.	Pipe	Outside diameter	Insulation	Insulation material
			mm	thickness
	A , B and	For liquid	6.35	8mm	Heat resisting foam plastic
	C unit	For gas	9.52	8mm	0.045 specific gravity

2Ensure that the 2 refrigerant pipes are well insulated to prevent condensation. 3Refrigerant bending radius must be 10cm or more.

12