Mitsubishi MXZ-3E54VA-ET1, MXZ-4E72VA-E1, MXZ-3E54VA-ER1, MXZ-3E68VA-ER1, MXZ-3E68VA-E1 Service Manual

HFC

utilized

R410A

SERVICE MANUAL

No. OBH723

REVISED EDITION-D

OUTDOOR UNIT

NOTE:

RoHS compliant products have <G> mark
on the spec name plate.

PARTS CATALOG (OBB723)

Models

MXZ-3E54VA

-

E1,

ET1, ER1

MXZ-3E68VA

-

E1,

ET1, ER1

MXZ-4E72VA

-

E1,

ET1, ER1

MXZ-4E83VA

-

E1, E2, E3,

ET1, ET2, ET3, ER1, ER2

MXZ-5E102VA

-

E1, E2, E3,

ET1, ET2, ET3, ER1, ER2

MXZ-2E53VAHZ

-

E1,

ER1

MXZ-4E83VAHZ

-

E1, E2,

ER1, ER2

Indoor unit service manual
MSZ-EF•VE Series (OBH589)
MSZ-SF•VA Series (OBH555)
MSZ-SF•VE Series (OBH600)
MSZ-FD•VA Series (OBH488)
MSZ-FH•VE Series (OBH623)
MSZ-GA•VA Series (OB378)
MSZ-GE•VA Series (OBH515)
MSZ-GF•VE Series (OBH634)
MFZ-KA•VA Series (OB409)
MFZ-KJ•VE Series (OBH666)
MLZ-KA•VA Series (OBH483)
SLZ-KA•VA Series (OC320)
SEZ-KD•VA Series (HWE07110)
PLA-RP•BA Series (OCH412)
PCA-RP•KA Series (OCH454)
PEAD-RP•JA Series (HWE08130)

CONTENTS

1. TECHNICAL CHANGES ···································3

2. PART NAMES AND FUNCTIONS ·····················4

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

4. NOISE CRITERIA CURVES ····························12

5. OUTLINES AND DIMENSIONS ······················14

6. WIRING DIAGRAM ··········································20

7. REFRIGERANT SYSTEM DIAGRAM ·············44

8. PERFORMANCE CURVES ·····························52

9. ACTUATOR CONTROL ···································82

10. SERVICE FUNCTIONS ····································83

11. TROUBLESHOOTING ·····································86

12. DISASSEMBLY INSTRUCTIONS ··················108

INDOOR UNITS COMBINATION SHEETS

MXZ-4E83VA
MXZ-5E102VA
MXZ-2E53VAHZ

OBH723 REVISED EDITION-C is void.

Revision D:

• MXZ-4E83VA- E3,

ET3, ER2

, MXZ-5E102VA-

E3, ET3, ER2

and MXZ-4E83VAHZ- E2,

ER2

have been added.

2

<Preparation before the repair service>

Prepare the proper tools.
Prepare the proper protectors.
Provide adequate ventilation.
After stopping the operation of the air conditioner, turn off the power-supply breaker and remove the power plug.
Discharge the capacitor before the work involving the electric parts.

<Precautions during the repair service>

Do not perform the work involving the electric parts with wet hands.
Do not pour water into the electric parts.
Do not touch the refrigerant.
Do not touch the hot or cold areas in the refrigeration cycle.
When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to

touch the live parts.

Use the specif ed refrigerant only

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by
failure to follow the instructions.

Revision A:

• MXZ-2E53VAHZ- E1 and MXZ-4E83VAHZ- E1 have been added.

• Values of air flow and fan speed for MXZ-5E102VA-

E1, ET1

have been modified.

Revision B:

• MXZ-3E54VA- E1,

ET1

, MXZ-3E68VA- E1,

ET1

, and MXZ-4E72VA- E1,

ET1

have been added.

Revision C:

• MXZ-3E54VA-

ER1

, MXZ-3E68VA-

ER1

, MXZ-4E72VA-

ER1

, MXZ-4E83VA- E2,

ET2, ER1

, MXZ-5E102VA- E2,

ET2, ER1

,

MXZ-2E53VAHZ-

ER1

and MXZ-4E83VAHZ-

ER1

have been added.

Revision D:

• MXZ-4E83VA- E3,

ET3, ER2

, MXZ-5E102VA- E3,

ET3, ER2

and MXZ-4E83VAHZ- E2,

ER2

have been added.

OBH723D

3

TECHNICAL CHANGES

1

MXZ-4E83VA -E1,

ET1, ER1

MXZ-5E102VA -E1,

ET1, ER1

1. New model

MXZ-2E53VAHZ -E1,

ER1

1. New model

MXZ-4E83VAHZ -E1,

ER1

1. New model

MXZ-3E54VA -E1,

ET1, ER1

MXZ-3E68VA -E1,

ET1, ER1

MXZ-4E72VA -E1,

ET1, ER1

1. New model

MXZ-4E83VA -E1,

ET1

MXZ-4E83VA -

E2, ET2

1. Fan motor has been changed.

2. Outdoor control P.C. board has been changed.

MXZ-5E102VA -E1,

ET1

MXZ-5E102VA -

E2, ET2

1. Fan motor has been changed.

2. Outdoor control P.C. board has been changed.

MXZ-4E83VA -

ER1

MXZ-4E83VA -

ER2

1. Outdoor control P.C. board has been changed.

MXZ-4E83VA -E2,

ET2

MXZ-4E83VA -

E3, ET3

1. Outdoor control P.C. board has been changed.

MXZ-5E102VA -

ER1

MXZ-5E102VA -

ER2

1. Outdoor control P.C. board has been changed.

MXZ-5E102VA -E2,

ET2

MXZ-5E102VA -

E3, ET3

1. Outdoor control P.C. board has been changed.

MXZ-4E83VAHZ -E1,

ER1

MXZ-4E83VAHZ -

E2, ER2

1. Outdoor control P.C. board has been changed.

OBH723D

4

PART NAMES AND FUNCTIONS

2

MXZ-4E83VA
MXZ-5E102VA
MXZ-2E53VAHZ

Air outlet

Drain outlet

Air inlet

(Back and side)

ACCESSORIES

Model

MXZ-3E54VA
MXZ-3E68VA
MXZ-4E72VA

MXZ-4E83VA
MXZ-5E102VA

Drain socket 1 1

Drain cap 2 5

Air outlet

Drain outlet

Air inlet

(Back and side)

MXZ-4E83VAHZ

Air outlet

Drain outlet

Air inlet

(Back and side)

MXZ-3E54VA
MXZ-3E68VA
MXZ-4E72VA

OBH723D

5

SPECIFICATION

3

Outdoor model MXZ-3E54VA

Outdoor unit power supply

Single phase
230 V, 50 Hz

System

Indoor units number 2 to 3

Piping total length m Max. 50

Connecting pipe length m Max. 25

Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Function Cooling Heating

Capacity Rated frequency (Min.-Max.)

2 kW 5.4 (2.9 - 6.8) 7.0 (2.6 - 9.0)

Breaker capacity A 25

Electrical

data

Power input (Total) 1, 2 W 1,350 1,590

Running current (Total)

1, 2 A 5.9 7.0

Power factor (Total)

1, 2% 99

Starting current (Total)

1, 2 A 7.0

Coeff cient of performance (C.O.P) (Total)

1, 2 4.00 4.40

Compressor

Model SNB130FGBH1T

Output W 1,400

Current

1, 2 A 5.72 6.62

Refrigeration oil (Model) L 0.7 (NEO22)

Fan

motor

Model SIC-71FW-F764-2

Current

1, 2 A 0.2

Dimensions W x H x D mm 840 x 710 x 330

Weight kg 58

Special

remarks

Air f ow (Rated) m3 /h 2,334 2,376

Sound level (Rated) dB(A) 50 53

Fan speed (Rated) rpm 650 660

Refrigerant f lling capacity (R410A) kg 2.7

1 Measured under rated operating frequency.

2 When connected with indoor units below.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF18VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0 °C Wet-bulb temperature 19.0 °C
OUTDOOR Dry-bulb temperature 35.0 °C Wet-bulb temperature 24.0 °C
HEATING INDOOR Dry-bulb temperature 20.0 °C
OUTDOOR Dry-bulb temperature 7.0 °C Wet-bulb temperature 6.0 °C

OBH723D

6

Outdoor model MXZ-3E68VA

Outdoor unit power supply

Single phase
230 V, 50 Hz

System

Indoor units number 2 to 3

Piping total length m Max. 60

Connecting pipe length m Max. 25

Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Function Cooling Heating

Capacity Rated frequency (Min.-Max.)

2 kW 6.8 (2.9 - 8.4) 8.6 (2.6 - 10.6)

Breaker capacity A 25

Electrical

data

Power input (Total) 1, 2 W 2,190 2,380

Running current (Total)

1, 2 A 9.6 10.5

Power factor (Total)

1, 2% 99

Starting current (Total)

1, 2 A 10.5

Coeff cient of performance (C.O.P) (Total)

1, 2 3.11 3.61

Compressor

Model SNB172FEGH1T

Output W 1,800

Current

1, 2 A 9.22 10.12

Refrigeration oil (Model) L 0.7 (NEO22)

Fan

motor

Model SIC-71FW-F764-2

Current

1, 2 A 0.2

Dimensions W x H x D mm 840 x 710 x 330

Weight kg 58

Special

remarks

Air f ow (Rated) m3 /h 2,334 2,376

Sound level (Rated) dB(A) 50 53

Fan speed (Rated) rpm 650 660

Refrigerant f lling capacity (R410A) kg 2.7

1 Measured under rated operating frequency.

2 When connected with indoor units below.
MSZ-EF18VE + MSZ-EF25VE + MSZ-EF25VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0 °C Wet-bulb temperature 19.0 °C
OUTDOOR Dry-bulb temperature 35.0 °C Wet-bulb temperature 24.0 °C
HEATING INDOOR Dry-bulb temperature 20.0 °C
OUTDOOR Dry-bulb temperature 7.0 °C Wet-bulb temperature 6.0 °C

OBH723D

7

Outdoor model MXZ-4E72VA

Outdoor unit power supply

Single phase
230 V, 50 Hz

System

Indoor units number 2 to 4

Piping total length m Max. 60

Connecting pipe length m Max. 25

Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Function Cooling Heating

Capacity Rated frequency (Min.-Max.)

2 kW 7.2 (3.7 - 8.8) 8.6 (3.4 - 10.7)

Breaker capacity A 25

Electrical

data

Power input (Total) 1, 2 W 2,250 2,280

Running current (Total)

1, 2 A 9.9 10.0

Power factor (Total)

1, 2% 99

Starting current (Total)

1, 2 A 10.0

Coeff cient of performance (C.O.P) (Total)

1, 2 3.20 3.77

Compressor

Model SNB172FEGH1T

Output W 2,000

Current

1, 2 A 9.46 9.56

Refrigeration oil (Model) L 0.7 (NEO22)

Fan

motor

Model SIC-71FW-F764-2

Current

1, 2 A 0.2

Dimensions W x H x D mm 840 x 710 x 330

Weight kg 59

Special

remarks

Air f ow (Rated) m3 /h 2,334 2,376

Sound level (Rated) dB(A) 50 53

Fan speed (Rated) rpm 650 660

Refrigerant f lling capacity (R410A) kg 2.7

1 Measured under rated operating frequency.

2 When connected with indoor units below.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF18VE + MSZ-EF18VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0 °C Wet-bulb temperature 19.0 °C
OUTDOOR Dry-bulb temperature 35.0 °C Wet-bulb temperature 24.0 °C
HEATING INDOOR Dry-bulb temperature 20.0 °C
OUTDOOR Dry-bulb temperature 7.0 °C Wet-bulb temperature 6.0 °C

OBH723D

8

Outdoor model MXZ-4E83VA

Outdoor unit power supply

Single phase
230 V, 50 Hz

System

Indoor units number 2 to 4

Piping total length m Max. 70

Connecting pipe length m Max. 25

Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Function Cooling Heating

Capacity Rated frequency (Min.-Max.)

2 kW 8.3 (3.7 - 9.2) 9.3 (3.4 - 11.6)

Breaker capacity A 25

Electrical

data

Power input (Total) 1, 2 W 2,440 2,000

Running current (Total)

1, 2 A 10.7 8.8

Power factor (Total)

1, 2% 99

Starting current (Total)

1, 2 A 10.7

Coeff cient of performance (C.O.P) (Total)

1, 2 3.40 4.65

Compressor

Model SNB220FAGMC

Output W 2,200

Current

1, 2 A 10.1 8.1

Refrigeration oil (Model) L 0.7 (FV50S)

Fan

motor

Model

E1

,

ET1

: SIC-81FW-D888-9

E2

,

ET2

,

ER1

, E3,

ET3

,

ER2

: SIC-88FWJ-D888-1

Current

1, 2 A 0.3

Dimensions W x H x D mm 950 x 796 x 330

Weight kg

E1

,

ET1

: 62 / E2,

ET2

,

ER1

, E3,

ET3

,

ER2

: 63

Special

remarks

Air f ow (Rated) m3 /h 3,336 3,336

Sound level (Rated) dB(A) 49 51

Fan speed (Rated) rpm 620 620

Refrigerant f lling capacity (R410A) kg 2.99

1 Measured under rated operating frequency.

2 When connected with below indoor units.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF22VE + MSZ-EF25VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature 35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature 20.0°C
OUTDOOR Dry-bulb temperature 7.0°C Wet-bulb temperature 6.0°C

OBH723D

9

Outdoor model MXZ-5E102VA

Outdoor unit power supply

Single phase

230 V, 50 Hz

System

Indoor units number 2 to 5

Piping total length m Max. 80

Connecting pipe length m Max. 25

Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Function Cooling Heating

Capacity Rated frequency (Min.-Max.)

2 kW 10.2 (3.9 - 11.0) 10.5 (4.1 - 14.0)

Breaker capacity A 25

Electrical

data

Power input (Total) 1, 2 W 3,150 2,340

Running current (Total)

1, 2 A 13.8 10.3

Power factor (Total)

1, 2% 99

Starting current (Total)

1, 2 A 13.8

Coeff cient of performance (C.O.P) (Total)

1, 2 3.24 4.49

Compressor

Model SNB220FAGMC

Output W 2,800

Current

1, 2 A 13.0 9.4

Refrigeration oil (Model) L 0.7 (FV50S)

Fan

motor

Model

E1

,

ET1

: SIC-81FW-D888-9

E2

,

ET2

,

ER1

, E3,

ET3

,

ER2

: SIC-88FWJ-D888-1

Current

1, 2 A 0.5

Dimensions W x H x D mm 950 x 796 x 330

Weight kg

E1

,

ET1

: 63 / E2,

ET2

,

ER1

, E3,

ET3

,

ER2

: 64

Special

remarks

Air f ow (Rated) m3 /h

E1

,

ET1

: 3,336 /

E2

,

ET2

,

ER1

,

E3,

ET3

,

ER2

: 3,906

4,080

Sound level (Rated) dB(A) 52 56

Fan speed (Rated) rpm

E1

,

ET1

: 620 /

E2

,

ET2

,

ER1

,

E3,

ET3

,

ER2

: 720

750

Refrigerant f lling capacity (R410A) kg 2.99

1 Measured under rated operating frequency.

2 When connected with below indoor units.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF22VE + MSZ-EF22VE + MSZ-EF22VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature 35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature 20.0°C
OUTDOOR Dry-bulb temperature 7.0°C Wet-bulb temperature 6.0°C

OBH723D

10

Outdoor model MXZ-2E53VAHZ

Outdoor unit power supply

Single phase

230 V, 50 Hz

System

Indoor units number 2

Piping total length m Max. 30

Connecting pipe length m Max. 20

Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Function Cooling Heating

Capacity Rated frequency (Min.-Max.)

2 kW 5.3 (1.1 - 6.0) 6.4 (1.0 - 7.0)

Breaker capacity A 16/25

3

Electrical

data

Power input (Total) 1, 2 W 1,290 1,360

Running current (Total)

1, 2 A 5.7 6.0

Power factor (Total)

1, 2% 98

Starting current (Total)

1, 2 A 6.0

Coeff cient of performance (C.O.P) (Total)

1, 2 4.11 4.71

Compressor

Model SNB220FAGMC

Output W 1,400

Current

1, 2 A 5.3 5.5

Refrigeration oil (Model) L 0.7 (FV50S)

Fan

motor

Model

E1

: SIC-81FW-D888-9, SIC-88FWJ-D888-1

ER1

: SIC-88FWJ-D888-1

Current 1, 2 A 0.3

Dimensions W x H x D mm 950 x 796 x 330

Weight kg 61

Special

remarks

Air f ow (Rated) m3 /h 2,820 2,820

Sound level (Rated) dB(A) 45 47

Fan speed (Rated) rpm 520 520

Refrigerant f lling capacity (R410A) kg 2.0

1 Measured under rated operating frequency.
2 When connected with below indoor units.

3 When the amount of current exceeds the allowed value.
MSZ-EF18VE + MSZ-EF35VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0°C Wet-bulb temperature 19.0°C
OUTDOOR Dry-bulb temperature 35.0°C Wet-bulb temperature 24.0°C
HEATING INDOOR Dry-bulb temperature 20.0°C
OUTDOOR Dry-bulb temperature 7.0°C Wet-bulb temperature 6.0°C

OBH723D

11

Outdoor model MXZ-4E83VAHZ

Outdoor unit power supply

Single phase
230 V, 50 Hz

System

Indoor units number 2 to 4

Piping total length m Max. 70

Connecting pipe length m Max. 25

Height difference (Indoor ~ Outdoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Height difference (Indoor ~ Indoor) m Refer to 7 REFRIGERANT SYSTEM DIAGRAM.

Function Cooling Heating

Capacity Rated frequency (Min.-Max.)

2 kW 8.3 ( 3.5 - 9.2 ) 9.0 ( 3.5 - 11.6 )

Breaker capacity A 25/30

3

Electrical

data

Power input (Total) 1, 2 W 2,250 1,900

Running current (Total)

1, 2 A 9.9 8.3

Power factor (Total)

1, 2% 99

Starting current (Total)

1, 2 A 9.9

Coeff cient of performance (C.O.P) (Total)

1, 2 3.68 4.73

Compressor

Model MNB33FBTMC-L

Output W 2,200

Current

1, 2 A 9.30 7.60

Refrigeration oil (Model) L 1.10 (FV50S)

Fan

motor

Model SIC-81FW-D888-9,

SIC-88FWJ-D888-1

Current 1, 2 A 0.3

Dimensions W x H x D mm 950 x 1,048 x 330

Weight kg 87

Special

remarks

Air f ow (Rated) m3 /h 3,780 4,620

Sound level (Rated) dB(A) 53 57

Fan speed (Rated) rpm 650 770

Refrigerant f lling capacity (R410A) kg 3.9

1 Measured under rated operating frequency.
2 When connected with indoor units below.

3 When the amount of current exceeds the allowed value.
MSZ-EF18VE + MSZ-EF18VE + MSZ-EF22VE + MSZ-EF25VE
NOTE: Test conditions are based on ISO 5151. (Refrigerant piping length (one way): 5 m)
COOLING INDOOR Dry-bulb temperature 27.0 °C Wet-bulb temperature 19.0 °C
OUTDOOR Dry-bulb temperature 35.0 °C Wet-bulb temperature 24.0 °C
HEATING INDOOR Dry-bulb temperature 20.0 °C
OUTDOOR Dry-bulb temperature 7.0 °C Wet-bulb temperature 6.0 °C

OBH723D

12

NOISE CRITERIA CURVES

4

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

CoolingHigh

FUNCTION

FAN SPEED

HeatingHigh

49

SPL(dB(A))51LINE

OUTDOOR UNIT

MICROPHONE

1m

Test conditions
Cooling :Dry-bulb temperature 35.0°C Wet-bulb temperature 24.0°C
Heating :Dry-bulb temperature 7.0°C Wet-bulb temperature 6.0°C

MXZ-4E83VA

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

CoolingHigh

FUNCTION

FAN SPEED

HeatingHigh

50

SPL(dB(A))53LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

CoolingHigh

FUNCTION

FAN SPEED

HeatingHigh

50

SPL(dB(A))53LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

CoolingHigh

FUNCTION

FAN SPEED

HeatingHigh

50

SPL(dB(A))53LINE

MXZ-3E54VA MXZ-3E68VA

MXZ-4E72VA

OBH723D

13

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

CoolingHigh

FUNCTION

FAN SPEED

HeatingHigh

52

SPL(dB(A))56LINE

MXZ-5E102VA

MXZ-4E83VAHZ

MXZ-2E53VAHZ

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

CoolingHigh

FUNCTION

FAN SPEED

HeatingHigh

53

SPL(dB(A))57LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

CoolingHigh

FUNCTION

FAN SPEED

HeatingHigh

45

SPL(dB(A))47LINE

OBH723D

14

OUTLINES AND DIMENSIONS

5

1.Installation space

Note : Leave front and both sides
free of obstruction.

Note : Leave rear, overhead and
both sides free of obstruction.

500 or more

100 or more

Note : Leave front and overhead
free of obstruction.

100 or more

350 or more

200 or more

500 or more

2.Service space

100 or more

500 or more

350 or more

350 or more

100 or more

Service space

MXZ-3E54VA MXZ-3E68VA

Unit: mm

OBH723D

15

1.Installation space

Note : Leave front and both sides
free of obstruction.

Note : Leave rear, overhead and
both sides free of obstruction.

500 or more

100 or more

Note : Leave front and overhead
free of obstruction.

100 or more

350 or more

200 or more

500 or more

2.Service space

100 or more

500 or more

350 or more

350 or more

100 or more

Service space

MXZ-4E72VA

Unit: mm

OBH723D

16

MXZ-4E83VA

Unit: mm

Air in

Air in

Air in

Air out

OBH723D

17

MXZ-5E102VA

Unit: mm

Air in

Air in

Air in

Air out

OBH723D

18

Unit: mm

MXZ-2E53VAHZ

OBH723D

19

MXZ-4E83VAHZ

Unit: mm

OBH723D

20

MXZ-3E54VA -E1 MXZ-3E54VA -

ET1

MXZ-3E54VA -

ER1

MXZ-3E68VA -E1 MXZ-3E68VA -

ET1

MXZ-3E68VA -

ER1

WIRING DIAGRAM

6

t°

21S4

t°°t°t

L

MS

3~

t°

RT64

M

LEV R LEV C LEV ALEV B

RT62

RT61

X714

X712

F711

TO INDOOR

UNIT No.C

TO INDOOR

UNIT No.A

TO INDOOR

UNIT No.B

TB2

TB3

TB4

12-24V

~230V

~230V

12-24V

~230V

12-24V

RT68 RT65

MMM

MS

3~

MF

T801

BLK

WHT

RED

RED

WHT

BLK

U

V

W

MC

CB3

CB2

CB1

BOARD

POWER P.C.

OUTDOOR

OUTDOOR CONTROL P.C. BOARD

F1

F2

TB1

BREAKER

CIRCUIT

POWER SUPPLY

~/N 230V 50Hz

IC801

5

HPS

CN63H

13

1

6

CN797

CN714

1

2

CNAC

CN712

1

2

S1

S2

S3

S1

S2

S3

S1

S2

S3

1

5

CN741

D1

IC401

IC402

2

1

CN171

1

8

CNTH1

2

1

CNTH2

555

CNMC

1

551

1

7

1

CN792 CN791CN793

1

5

5

7

1

CNF1

CN702

1

3

CNDC

U

V

W

1

3

1

CN151

1

7

CNDC

CNAC2

CN701

2

1

1

2

CN152

IC501

IC411

TAB4

TAB6

TAB5

TAB3

X52C

3

5

CN601

1

3

CN611

1

TAB1

TAB2

3

1

CNAC1

3

TBE4 TBE2 TBE1

PTC1

PTC2

X65

L

N

(BLU)

BLK

BLU

RED

BLK

BLU

WHT

BLK

BLU

ORN

BLK

BLK

BRN

BLK

BLK

(RED) (WHT)

(BLU)

BLK

BLK

BLK

BLK

BLK

BLK

BLK

BLK

BLU

RED

BLU

BLK

BLK

BLK

BLK

BLK

BLU

GRN/YLW

WHT

ORN

+++

LEV A~C,R

MC

MF

PTC1,2

RT61

RT62

X52C

X65

X712

X714

21S4

RELAY

RELAY

RELAY

RELAY

REVERSING VALVE

SOLENOID COIL

DEFROST THERMISTOR

FIN TEMP. THERMISTOR

AMBIENT TEMP. THERMISTOR

OUTDOOR HEAT EXCHANGER

TEMPERATURE THERMISTOR

TRANSFORMER

TERMINAL BLOCK

RT64

RT65

RT68

T801

TB1~4

FAN MOTOR

COMPRESSOR

EXPANSION VALVE COIL

DISCHARGE TEMP. THERMISTOR

SMOOTHING CAPACITOR

DIODE

FUSE(T6.3AL250V)

FUSE(T6.3AL250V)

FUSE(T3.15AL250V)

HIGH PRESSURE SWITCH

CB1~3

D1

F1

F2

F711

HPS

CIRCUIT PROTECTION

NOTES:

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

:Connector

SYMBOL

NAME

SYMBOL SYMBOL SYMBOL

NAME NAME NAME

SYMBOL

NAME

DIODE BRIDGE

POWER FACTOR CONTROLLER

POWER MODULE

POWER DEVICE

REACTOR

LED

IC401,402

IC411

IC501

IC801

L

LED1~3

LED3

LED2

LED1

OBH723D

21

MXZ-4E72VA -E1 MXZ-4E72VA -

ET1

MXZ-4E72VA -

ER1

t°

21S4

t°°t°t

L

MS

3~

RT64

M

LEV R LEV C LEV ALEV B

RT62

RT61

X714

X712

F711

TO INDOOR

UNIT No.C

TO INDOOR

UNIT No.A

TO INDOOR

UNIT No.B

TB2

TB3

TB4

12-24V

~230V

~230V

12-24V

~230V

12-24V

RT68 RT65

MMM

MS

3~

MF

T801

BLK

WHT

RED

RED

WHT

BLK

U

V

W

MC

CB3

CB2

CB1

BOARD

POWER P.C.

OUTDOOR

OUTDOOR CONTROL P.C. BOARD

F1

F2

TB1

BREAKER

CIRCUIT

POWER SUPPLY

~/N 230V 50Hz

LEV D

M

TO INDOOR

UNIT No.D

~230V

12-24V

TB5

IC801

5

HPS

CN63H

13

1

6

CN797

CN714

1

2

CNAC

CN712

1

2

S1

S2

S3

S1

S2

S3

S1

S2

S3

1

5

CN741

D1

IC401

IC402

2

1

CN171

1

8

CNTH1

2

1

CNTH2

555

CNMC

1

551

1

7

1

CN792 CN791CN793

1

5

5

7

1

CNF1

CN702

1

3

CNDC

U

V

W

1

3

1

CN151

1

7

CNDC

CNAC2

CN794

5

1

CN701

2

1

1

2

CN152

IC501

IC411

TAB4

TAB6

TAB5

TAB3

X52C

3

5

CN601

1

3

CN611

1

1

CN621

5

TAB1

TAB2

3

1

CNAC1

3

TBE4 TBE2 TBE1

PTC1

PTC2

X65

L

N

5

S1

S2

S3

(BLU)

BLK

BLU

RED

BLK

BLU

WHT

BLK

BLU

ORN

BLK

BLK

BRN

BLK

BLK

(RED) (WHT)

(BLU)

(YLW)

BLK

BLK

BLK

BLK

BLK

BLK

BLK

BLK

BLU

RED

BLU

BLK

BLK

BLK

BLK

BLK

BLU

GRN/YLW

WHT

ORN

YLW

BLU

BLK

YLW

+++

LEV A~D,R

MC

MF

PTC1,2

RT61

RT62

X52C

X65

X712

X714

21S4

RELAY

RELAY

RELAY

RELAY

REVERSING VALVE

SOLENOID COIL

DEFROST THERMISTOR

FIN TEMP. THERMISTOR

AMBIENT TEMP. THERMISTOR

OUTDOOR HEAT EXCHANGER

TEMPERATURE THERMISTOR

TRANSFORMER

TERMINAL BLOCK

RT64

RT65

RT68

T801

TB1~5

FAN MOTOR

COMPRESSOR

EXPANSION VALVE COIL

DISCHARGE TEMP. THERMISTOR

SMOOTHING CAPACITOR

DIODE

FUSE(T6.3AL250V)

FUSE(T6.3AL250V)

FUSE(T3.15AL250V)

HIGH PRESSURE SWITCH

CB1~3

D1

F1

F2

F711

HPS

CIRCUIT PROTECTION

NOTES:

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

:Connector

SYMBOL

NAME

SYMBOL SYMBOL SYMBOL

NAME NAME NAME

SYMBOL

NAME

DIODE BRIDGE

POWER FACTOR CONTROLLER

POWER MODULE

POWER DEVICE

REACTOR

LED

IC401,402

IC411

IC501

IC801

L

LED1~3

LED3

LED2

LED1

t°

OBH723D

22

MXZ-4E83VA -

E1

OBH723D

23

MXZ-4E83VA -

E2

OBH723D

24

MXZ-4E83VA -

E3

OBH723D

25

MXZ-4E83VA -

ET1

OBH723D

26

MXZ-4E83VA -

ET2

OBH723D

27

MXZ-4E83VA -

ET3

OBH723D

28

MXZ-4E83VA -

ER1

OBH723D

29

MXZ-4E83VA -

ER2

OBH723D

30

MXZ-5E102VA -

E1

OBH723D