Mitsubishi Electric MUZ-GA50VA-E1, MUZ-GA60VA-E1, MUZ-GA60VA-E2, MUZ-GA60VA-E3, MUZ-GA71VA-E1 Service Manual

SERVICE MANUAL

CONTENTS

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

2. PART NAMES AND FUNCTIONS ····················· 6

3. SPECIFICATION ················································ 6

4. NOISE CRITERIA CURVES ······························ 7

5. OUTLINES AND DIMENSIONS ························ 8

6. WIRING DIAGRAM ············································ 9

7. REFRIGERANT SYSTEM DIAGRAM ············· 12

8. PERFORMANCE CURVES ····························· 15

9. ACTUATOR CONTROL ··································· 26

10. SERVICE FUNCTIONS ···································· 27

11. TROUBLESHOOTING ····································· 27

12. DISASSEMBLY INSTRUCTIONS ···················· 46

13. PARTS LIST ····················································· 50

14. RoHS PARTS LIST ·········································· 52

Models

SPLIT-TYPE AIR CONDITIONERS

MUZ-GA50VA -

E1

MUZ-GA60VA -

E1

MUZ-GA60VA -

E2

MUZ-GA60VA -

E3

MUZ-GA71VA -

E1

MUZ-GA71VA -

E2

HFC

utilized

R410A

NOTE:

• RoHS compliant products have <G> mark on the spec name plate. For servicing of RoHS compliant products, refer to the RoHS Parts List.

• Contents of SERVICE FUNCTIONS (10) have been removed.

No. OB389

REVISED EDITION-H

Indoor unit service manual MSZ-GA•VA Series (OB388)

Please void OB389 REVISED EDITION-G.

OUTDOOR UNIT

Revision H:

• Errors in TROUBLESHOOTING have

been corrected.

2

Revision A :

• RoHS PARTS LIST has been added.

• Failure mode recall function (11-2.) has been changed.

• Check of HPS (11-6.

) has been corrected.

Revision B:

• Compressor has been changed. (MUZ-GA50/60VA)

Previous New

Model SNB130FLDH SNB130FLDH1

PARTS LIST number E02 851 900 E02 939 900

RoHS PARTS LIST number E12 851 900 E12 939 900

Revision C:

• MUZ-GA60/71VA-

E2

have been added.

• Check of outdoor thermistors (11-6. ) has been corrected.

• Contents of SERVICE FUNCTIONS (10) have been removed as these models do not have the functions.

Revision D:

• PARTS LIST and RoHS PARTS LIST have been changed.

Revision E:

• REFRIGERANT SYSTEM DIAGRAM has been changed for MUZ-GA60VA-E2.

Revision F:

• MUZ-GA60VA-E3 has been added.

Revision G:

• The fan guard for MUZ-GA50VA-E, MUZ-GA60VA-E and MUZ-GA71VA-E has been changed.

Use the speciﬁ 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 H:

• Errors in TROUBLESHOOTING have been corrected.

3

1

TECHNICAL CHANGES

Refrigeration

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

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 (°C)

Steam pressure [25°C](Mpa)

Saturated steam density [25°C](kg/m

3

)

Combustibility

ODP 1

GWP 2

Refrigerant charge method

Additional charge on leakage

Kind

Color

Smell

1: Ozone Depletion Potential : based on CFC-11 2: Grobal Warming Potential : based on CO

2

INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT

• This room air conditioner adopts 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 air conditioners.

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.

Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and

installation, since it is more susceptible to contaminations than R22.

For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant

piping.)

Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent

composition change.

MUZ-A18YV -E1 MUZ-GA50VA -

E1

MUZ-A24YV -E1 MUZ-GA60VA -

E1

MUZ-A26YV -E1 MUZ-GA71VA -

E1

1. Indication of capacity has been changed. (BTU base kW base)

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

3. Noise filter P.C. board has been changed.

4. Length of fan motor lead wire has been changed.

5. Shape of relay panel has been changed.

6. Signal of terminal block has been changed.

MUZ-GA60VA -E1 MUZ-GA60VA -

E2

1. Compressor has been changed. (SNB130FLDH1 SNB130FLEH1)

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

MUZ-GA71VA -E1 MUZ-GA71VA -

E2

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

MUZ-GA60VA -E2 MUZ-GA60VA -

E3

1. Compressor has been changed. (SNB130FLEH1 SNB130FGBH)

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

3. Refrigerant circuit has been changed.

4

-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

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/cm2 [Gauge])

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

Yes

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 15.88mm

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.

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/cm

2

[Gauge])

New Specification Current Specification

The incompatible refrigeration 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 refrigeration oil of the upper layer to flow back to the compressor.

Since refrigerant and refrigeration oil are compatible, refrigeration oil goes back to the compressor through the lower position oil back hole.

Compressor

Suction muffler

Oil back hole

Refrigeration oil

Refrigerant

Compressor

Suction muffler

Oil back hole

Refrigeration oil /Refrigerant

Compressor

55

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)

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

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. Refrigeration 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, capacity of the refrigeration 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.

2. Refrigerant piping

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.

Wall thickness

Outside diameter

Pipe

mm

For liquid

For gas

6.35

9.52

12.7

15.88

0.8 mm

1.0 mm

Heat resisting foam plastic

Specific gravity 0.045 Thickness 8 mm

Insulation material

6

PART NAMES AND FUNCTIONS

2

Air inlet

Piping

Air outlet

(back and side)

Drain hose

Drain outlet

ACCESSORIES

Drain socket

Drain cap Ø33

1

2

E1

E2

E3

Single phase

230V,50Hz

20

7.46

0.30

SNB130FLDH or SNB130FLDH1

850

U-V 0.45 W-U 0.45

V-W 0.4 5

RC0J60-AA

BLK-WHT 15.2

WHT-RED 15.2 RED-BLK15.2

840x850x330

53

2

1.8

NEO22

Cooling

5.0(0.9-5.9)

2.5

2,940/1,650

6.23

1,410

98.4

5.93

3.42

53/51

800/480

Heating

5.9(0.9-7.8) —

2,940/2,210

7.01

1,580

98.0

6.71

3.62

55/53

800/620

Outdoor model

Function

Power supply

Capacity Rated frequency (Min.-Max.) Dehumidification Air flow (High/Low) Breaker capacity Running current Power input Power factor Starting current 1 Compressor motor current 1 Fan motor current

Model

Output Winding resistance(at 20°C) Model Winding resistance (at 20°C) Dimensions WxHxD Weight Sound level (High/Low) Fan speed (High/Low) Fan speed regulator Refrigerant filling capacity (R410A) Refrigeration oil (Model)

kW

/h

m

3

/h A A

W %

A A A

W

Ω

mm

kg dB

rpm

kg

Compressor

Fan

motor

Special

remarks

Coefficient of performance(C.O.P) 1

Capacity

Electrical

data

Single phase

230V,50Hz

20

11. 2

0.30

TNB220FMCH

1,300

U-V 1.41 W-U 1.41

V-W 1.4 1

RC0J60-AA

BLK-WHT 15.2

WHT-RED 15.2 RED-BLK15.2

840x850x330

58

2

2.0

NEO22

Heating

8.1(0.9-9.6) —

2,940/2,210

10.6

2,390

98.0

10.3

3.31

55/53

800/620

MUZ-GA71VA

Single phase

230V,50Hz

20

8.93

0.30

SNB130FLDH or SNB130FLDH1

SNB130FLEH1

SNB130FGBH

850

U-V 0.45 W-U 0.45

V-W 0.4 5

RC0J60-AA

BLK-WHT 15.2

WHT-RED 15.2 RED-BLK15.2

840x850x330

53

2

1.8

NEO22

Cooling

6.0(0.9-6.7)

3.0

2,940/1,650

8.23

1,870

98.8

7.93

3.11

53/51

800/480

Heating

6.8(0.9-8.1) —

2,940/2,210

8.33

1,880

98.1

8.03

3.51

55/53

800/620

MUZ-GA60VA

MUZ-GA50VA

Cooling

7.1(0.9-8.3)

3.8

2,940/1,650

10.4

2,360

98.7

10.1

2.93

53/51

800/480

NOTE: Test conditions are based on ISO 5151. Cooling: Indoor Dry bulb temperature 27

Wet bulb temperature 19

Outdoor Dry bulb temperature 35 Wet bulb temperature (24

) Heating: Indoor Dry bulb temperature 20 Wet bulb temperature 15 Outdoor Dry bulb temperature 7 Wet bulb temperature 6 Refrigerant piping length (one way): 5m 1 Measured under rated operating frequency.

3

SPECIFICATION

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

7

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

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

OUTDOOR UNIT

MICROPHONE

1m

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

53

55

Test conditions Cooling: Dry-bulb temperature 35°C

Wet-bulb temperature (24°C) Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°C

Model

Item

Smoothing capacitor

Current transformer

Fuse

Intelligent power module

High pressure switch

Intelligent power module

Reactor

Expansion valve coil

Power factor controller

Resistor

Solenoid coil relay

Terminal block

Relay

R.V. coil

MUZ-GA50VA

(CB1,2,3)

(CT1,2)

(CT61)

(F64)

(F801)

(F911)

(HC930)

(HPS)

(IPM)

(L)

(LEV)

(PFC)

(R64A,B)

(R937A,B)

(RS1~4)

(SSR61)

(TB1)

(TB2)

(X64)

(21S4)

MUZ-GA60VA MUZ-GA71VA

560μF 450V

ETQ19Z68AY

ETQ19Z53AY

250V 2A

250V 3.15A

250V 1A

PS21661-RZ

ACB-DB156 (for )

PS21244-A

340μH 20A

DC 12 V

PS51259-A

10Ω 10W

1.1Ω 2W 2%

0.04Ω 7W

TLP3506

3P

G4A

AC 220 ~ 240 V

ACB-DB156

–

E3

Specifications and rated conditions of main electric parts

8

5

OUTLINES AND DIMENSIONS

Unit: mm

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

30°

35°

155

90

198

40

515

299

66

34

51

330

360

850

430

500

80

121

840

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

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

Open as a rule 500 mm or more if the back, both sides and top are open

350 mm or more

100 mm or more

Service panel

Gas refrigerant pipe joint Refrigerant pipe (flared) Ø12.7 (MUZ-GA50) Ø15.88 (MUZ-GA60/71)

Liquid refrigerant pipe joint Refrigerant pipe (flared) Ø6.35 (MUZ-GA50/60) Ø9.52 (MUZ-GA71)

REQUIRED SPACE

9

WIRING DIAGRAM

6

R64B

YLW

230V~

12-24V

CN912

CN663

WHT

BLU

NOISE

FILTER

P.C.BOARD

BRN

TO INDOOR

UNIT

CONNECTING

RED

S3

RT65

21

CN61

13

GRN/YLW

5

PFC

GRN

LD9

POWER

BOARD

RT64

21

CN3

RED

WHT

RS2

RS1

R64A

RS3

RS4

F801

CN901

NR64

ELECTRONIC

CONTROL

P.C.BOARD

CB1

CB2

CB3

HC930

IPM

NF

BLK

WHT

RED

YLW

BLU

ORN

PNK

GRY

BLU

WHT

GRN

BLU BLU

BLK

BLK BLK

BLK

RED

BLU

L

CT2

CT1

SSR61

U

6

CN7954123 78

CN661

W

CN4

TB2

S1

1

CN601

3

S2

1 567

CN702

5321

CN781

13

CN701

12

CN931

LD1LD2

T801

R937A

R937B

CN801

231 34512

MF

CN932

3X64

5123

LDE2

12

CT61

TAB1

F64

F911

LDE1

21S4

POWER SUPPLY

~/N 230V 50Hz

TAB2

N

PE

L

TB1

CIRCUIT

BREAKER

4

1

RED

YLW

3

2

RED

S

R

21

CN903

21

CN902

21

CN5

6543 1

CN2

27

TAB4

V

MC

W

U

V

WHT

RT61 RT62 RT68

LEV

:Terminal block :Connector

3.Symbols below indicate.

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

diagram for servicing.

refer to the indoor unit electric wiring

1.About the indoor side electric wiringNOTES:

SYMBOL

NAME

SYMBOL

NAME

CURRENT TRANSFORMER

FUSE (T1AL 250V)

LEV

EXPANSION VALVE COIL

L

REACTOR

IPM

INTELLIGENT POWER MODULE

CT61

FUSE (T2AL 250V)

F64

CT1, 2

CURRENT TRANSFORMER

HC930

INTELLIGENT POWER MODULE

F911

F801

FUSE (T3.15AL 250V)

SMOOTHING CAPACITOR

CB1~3

OUTDOOR FAN MOTOR

POWER FACTOR CONTROLLER

NOISE FILTER

RT61

DISCHARGE TEMPERATURE THERMISTOR

RS1~4

RESISTOR

R937A, B

RESISTOR

MF

MC

COMPRESSOR

R64A,B

RESISTOR

PFC

NF

NR64

VAR ISTOR

AMBIENT TEMPERATURE THERMISTOR

SOLENOID COIL RELAY

21S4

R.V. COIL

X64

RELAY

TB1

TERMINAL BLOCK

TB2

TERMINAL BLOCK

RT65

FIN TEMPERATURE THERMISTOR

RT64

T801

TRANSFORMER

SSR61

RT68

OUTDOOR HEAT EXCHANGER

TEMPERATURE THERMISTOR

DEFROST THERMISTOR

RT62

NAME

SYMBOL

MUZ-GA50VA MUZ-GA60VA -

E1

MUZ-GA60VA -

E2

10

MUZ-GA60VA -

E3

11

MUZ-GA71VA

BLK

CN902

12

CN903

12

TAB4

X64 3

R64A R64B

RED

2

3

1

4

L

YLW

RED

230V~

12-24V

CN912

CN663

WHT

BLU

NOISE

FILTER

P.C.BOARD

BRN

TO INDOOR

UNIT

CONNECTING

RED

S3

RT65

21

CN61

13

GRN/YLW

5

PFC

GRN

LD9

POWER

BOARD

RT64

21

CN3

HPS

RED

WHT

RS2

RS1 RS3

RS4

F801

CN901

NR64

CN681

ELECTRONIC

CONTROL

P.C.BOARD

CB1

CB2

CB3

HC930

IPM

NF

BLK

WHT

RED

YLW

BLU

ORN

PNK

GRY

BLU

WHT

GRN

BLU BLU

BLK

BLK BLK

BLK

RED

BLU

CT2

CT1

SSR61

U

6

CN7954123 78

CN661

12

W

CN4

TB2

S1

1

CN601

3

S2

1567

CN702

5321

CN781

13

CN701

12

CN931

LD1LD2

T801

R937A

R937B

CN801

23134512

MF

CN932

5123

LDE2

12

CT61

TAB1

F64

F911

LDE1

21S4

POWER SUPPLY

~/N 230V 50Hz

TAB2

N

PE

L

TB1

CIRCUIT

BREAKER

S

R

21

CN5

6543 1

CN2

27

V

MC

W

U

V

WHT

RT61 RT62 RT68

LEV

:Terminal block :Connector

3.Symbols below indicate.

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

diagram for servicing.

refer to the indoor unit electric wiring

1.About the indoor side electric wiringNOTES:

SYMBOL

NAME

SYMBOL

NAME

CURRENT TRANSFORMER

FUSE (T1AL 250V)

LEV

EXPANSION VALVE COIL

L

REACTOR

IPM

INTELLIGENT POWER MODULE

HPS

HIGH PRESSURE SWITCH

CT61

CT1, 2

CURRENT TRANSFORMER

HC930

INTELLIGENT POWER MODULE

F911

F801

FUSE (T3.15AL 250V)

F64

FUSE (T2AL 250V)

SMOOTHING CAPACITORCB1~3

OUTDOOR FAN MOTOR

POWER FACTOR CONTROLLER

NOISE FILTER

RT61

DISCHARGE TEMPERATURE THERMISTOR

RS1~4

RESISTOR

R937A, B

RESISTOR

MF

MC

COMPRESSOR

R64A,B RESISTOR

PFC

NF

NR64

VAR ISTOR

FIN TEMPERATURE THERMISTOR

SOLENOID COIL RELAY

21S4

R.V. COIL

X64

RELAY

TB1

TERMINAL BLOCK

TB2

TERMINAL BLOCK

RT64

T801

TRANSFORMER

SSR61

AMBIENT TEMPERATURE THERMISTOR

RT65

RT68

OUTDOOR HEAT EXCHANGER

TEMPERATURE THERMISTOR

DEFROST THERMISTOR

RT62

NAME

SYMBOL

12

REFRIGERANT SYSTEM DIAGRAM

7

MUZ-GA50VA MUZ-GA60VA -

E1

Unit: mm

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube Ø3.6 x Ø2.4 x 50

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe Ø12.7 (MUZ-GA50VA) (with heat insulator) Ø15.88 (MUZ-GA60VA)

Refrigerant pipe Ø6.35 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Muffler

#100

Strainer

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Ambient temperature thermistor RT65

Strainer

#100

MUZ-GA60VA -

E2

Unit: mm

Outdoor heat exchanger

Flared connection

Defrost thermistor

RT61 Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube Ø3.6 x Ø2.4 x 50

Capillary tube Ø1.8 x Ø0.6 x 1000

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe Ø6.35 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Oil separator

Strainer

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Strainer

#100

Strainer

#100

Ambient temperature thermistor RT65

Refrigerant pipe Ø15.88 (with heat insulator)

13

MUZ-GA71VA

Unit: mm

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube Ø3.6 x Ø2.4 x 50

Capillary tube Ø1.8 x Ø0.6 x 1000

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe Ø15.88 (with heat insulator)

Refrigerant pipe Ø9.52 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Oil separator

High-pressure switch

Strainer

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Strainer

#100

Strainer

#100

Ambient temperature thermistor RT65

MUZ-GA60VA -

E3

Unit: mm

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube Ø3.6 x Ø2.4 x 50

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe Ø15.88 (with heat insulator)

Refrigerant pipe Ø6.35 (with heat insulator)

LEV

R.V. coil heating ON cooling OFF

Muffler

#100

Strainer

#100

Receiver

Outdoor heat exchanger temperature thermistor RT68

Ambient temperature thermistor RT65

Strainer

#100

High-pressure switch

14

Refrigerant Piping Max. length A

Max. Height difference B

Indoor unit

Outdoor unit

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Refrigerant piping : m

Max. length

A

Max. Height

difference

B

1530

Gas

12.7

15.88

Liquid

6.35

9.52

MUZ-GA50VA

MUZ-GA60VA

MUZ-GA71VA

Model

Piping size O.D : mm

Model

MUZ-GA50VA MUZ-GA60VA

Refrigerant piping length (one way)

Outdoor unit

precharged

1,800

15m

160

20m

260

25m

360

30m

460

7m

0

10m

60

ADDITIONAL REFRIGERANT CHARGE (R410A: g)

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

Outdoor unit

precharged

2,000

0 165 440 715 990 1,265

Refrigerant piping length (one way)

15m10m7m

Model

MUZ-GA71VA

20m

25m 30m

Calculation: Xg = 55 g/m x (Refrigerant piping length (m) -7)

NOTE: Refrigerant piping exceeding 7m requires additional refrigerant charge according to the calculation.

15

PERFORMANCE CURVES8

The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-

tions 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 ~ 264 V, 50 Hz

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

(1) Indoor intake air wet-bulb temperature : °C WB (2) Indoor outlet air wet-bulb temperature : °C WB (3) Outdoor intake air dry-bulb temperature : °C DB (4) Total input : W (5) Indoor intake air dry-bulb temperature : °C DB (6) Outdoor intake air wet-bulb temperature : °C WB (7) Total input : W

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

}

Cooling

Heating

How to measure the indoor air wet and dry 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 wet and 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 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.

INDOOR UNIT

OUTDOOR UNIT

Wet and dry bulb thermometers

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

Indoor air Wet-bulb temperature

difference (degree)

MUZ-GA50VA

8.7

8.0

7.3

6.6

5.9

5.3

at Rated frequency

MUZ-GA71VA

at Rated frequency

Outdoor intake air Dry-bulb temperature (°C)

10.7

9.8

8.9

8.0

7.2

6.4

8.7

8.0

7.3

6.6

5.9

5.3

MUZ-GA60VA

at Rated frequency

Indoor intake air Wet-bulb temperature (°C)

Indoo

r intake air Wet-bulb temperature (°C)

8-1. CAPACITY AND INPUT CURVES

16

MUZ-GA71VA

Capacity correction factors

Input correction factors

Capacity correction factors

Correction of Cooling capacity

The operational frequency of compressor

Correction of Cooling total input

The operational frequency of compressor

Correction of Heating total input

The operational frequency of compressor

Correction of Heating capacity

The operational frequency of compressor

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

24.1

22.3

20.4

18.5

16.7

14.8

13.0

11.1

23.4

21.6

19.8

18.0

16.2

14.4

12.6

10.8

Indoor air Dry-bulb temperature

difference (degree)

Indoor intake air Dry-

bulb temperature (°C)

Outdoor intake air Wet-bulb temperature (°C)

Indoor intake air Dry-bulb temperature (°

C)

MUZ-GA50VA

at Rated frequency

MUZ-GA60VA

at Rated frequency

MUZ-GA71VA

at Rated frequency

27.9

25.7

23.6

21.4

19.3

17.2

15.0

12.9

Capacity correction factors

Input correction factors

Capacity correction factors

Correction of Cooling capacity

The operational frequency of compressor

Correction of Cooling total input

The operational frequency of compressor

Correction of Heating total input

The operational frequency of compressor

Correction of Heating capacity

The operational frequency of compressor

Capacity correction factors

Input correction factors

Capacity correction factors

Correction of Cooling capacity

The operational frequency of compressor

Correction of Cooling total input

The operational frequency of compressor

Correction of Heating total input

The operational frequency of compressor

Correction of Heating capacity

The operational frequency of compressor

MUZ-GA50VA

MUZ-GA60VA

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

0 50 100 150

0.5

1.0

1.5

(Hz)

8-2. CAPACITY AND INPUT CORRECTION BY OPERATIONAL FREQUENCY OF COMPRESSOR

NOTE: The above broken lines are for the heating operation without any frost and defrost operation.

17

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/cm2 [Gauge])

(MPa [Gauge])

(kgf/cm

2

[Gauge])

18 32

15 2050256030

70 (%)

35(°C)

0.3

0.4

0.5

0.6

0.7

0.8

3

4

5

6

7

8

9

0.9

Ambient temperature(°C) Ambient humidity(%)

Outdoor low pressure

15 2050256030

70 (%)

35(°C)

4

5

6

7

8

32

18

Outdoor unit current(A)

Ambient temperature(°C) Ambient humidity(%)

MUZ-GA50VA

0.3

0.4

0.5

0.6

0.7

0.8

3

4

5

6

7

8

9

0.9

MUZ-GA71VA

15 205025

60

30 70 (%)

35(°C)

5

7

9

11

13

32

18

Outdoor unit current(A)

Ambient temperature(°C) Ambient humidity(%)

MUZ-GA71VA

(MPa [Gauge])

(kgf/cm

2

[Gauge])

18 32

15 2050256030

70 (%)

35(°C)

Ambient temperature(°C) Ambient humidity(%)

Outdoor low pressure

0.3

0.4

0.5

0.6

0.7

0.8

3

4

5

6

7

8

9

0.9

(MPa [Gauge])

(kgf/cm

2

[Gauge])

18 32

15 2050256030

70 (%)

35(°C)

15 205025

60

30 70 (%)

35(°C)

5

6

7

8

9

32

18

Ambient temperature(°C) Ambient humidity(%)

Outdoor low pressure

Outdoor unit current(A)

Ambient temperature(°C) Ambient humidity(%)

MUZ-GA60VA

1. Press EMERGENCY OPERATION switch to COOL or HEAT mode (COOL: Press once, HEAT: Press twice).

2. Test run operation starts and continues to operate for 30 minutes.

3. Compressor operates at rated frequency in COOL mode or 58Hz in HEAT mode.

4. Indoor fan operates at High speed.

5. After 30 minutes, test run operation finishes and EMERGENCY OPERATION starts (Operation frequency of compressor varies).

6. To cancel test run operation (EMERGENCY OPERATION), press EMERGENCY OPERATION switch or any button on remote controller.

8-3. TEST RUN OPERATION (How to operate fixed-frequency operation)

COOL operation

Both indoor and outdoor unit are under the

same temperature/humidity condition.

Operation: TEST RUN OPERATION (refer to 8-3.)

Dry-bulb temperature( )

Relative humidity(%)

20

50

25

60

30

70

8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

18

Outdoor unit current (A)

Ambient temperature(°C)

Outdoor unit current (A)

Ambient temperature(°C)

MUZ-GA71VA

MUZ-GA50VA

MUZ-GA60VA

10.0

9.0

8.0

7.0

6.0

5.0

4.0

2

5 10 15 20 25(°C)

16.0

15.0

14.0

13.0

12.0

11. 0

10.0 2

5 10 15 20 25(°C)

12.0

11. 0

10.0

9.0

8.0

7.0

6.0 2

5 10 15 20 25(°C)

Condition:

Operation: TEST RUN OPERATION (refer to 8-3.)

HEAT operation

Dry bulb temperature (ºC)

Indoor

20.0

14.521

Outdoor

76151220.0

14.5

Wet bulb temperature (ºC)

19

MSZ-GA50VA: MUZ-GA50VA

INDOOR INDOOR

CAPACITY:5.0(kW)

INPUT:1460(W)SHF:0.65

21

OUTDOOR DB(°C)

25 27 30

WB(°C)

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

DB(°C)

21 18 5.88 2.76 0.47 1200 5.63 2.64 0.47 1260 5.40 2.54 0.47 1320 21 20 6.13 2.14 0.35 1260 5.88 2.06 0.35 1335 5.70 2.00 0.35 1365 22 18 5.88 3.00 0.51 1200 5.63 2.87 0.51 1260 5.40 2.75 0.51 1320 22 20 6.13 2.39 0.39 1260 5.88 2.29 0.39 1335 5.70 2.22 0.39 1365 22 22 6.38 1.72 0.27 1305 6.15 1.66 0.27 1388 6.00 1.62 0.27 1425 23 18 5.88 3.23 0.55 1200 5.63 3.09 0.55 1260 5.40 2.97 0.55 1320 23 20 6.13 2.63 0.43 1260 5.88 2.53 0.43 1335 5.70 2.45 0.43 1365 23 22 6.38 1.98 0.31 1305 6.15 1.91 0.31 1388 6.00 1.86 0.31 1425 24 18 5.88 3.47 0.59 1200 5.63 3.32 0.59 1260 5.40 3.19 0.59 1320 24 20 6.13 2.88 0.47 1260 5.88 2.76 0.47 1335 5.70 2.68 0.47 1365 24 22 6.38 2.23 0.35 1305 6.15 2.15 0.35 1388 6.00 2.10 0.35 1425 24 24 6.70 1.54 0.23 1365 6.45 1.48 0.23 1440 6.30 1.45 0.23 1485 25 18 5.88 3.70 0.63 1200 5.63 3.54 0.63 1260 5.40 3.40 0.63 1320 25 20 6.13 3.12 0.51 1260 5.88 3.00 0.51 1335 5.70 2.91 0.51 1365 25 22 6.38 2.49 0.39 1305 6.15 2.40 0.39 1388 6.00 2.34 0.39 1425 25 24 6.70 1.81 0.27 1365 6.45 1.74 0.27 1440 6.30 1.70 0.27 1485 26 18 5.88 3.94 0.67 1200 5.63 3.77 0.67 1260 5.40 3.62 0.67 1320 26 20 6.13 3.37 0.55 1260 5.88 3.23 0.55 1335 5.70 3.14 0.55 1365 26 22 6.38 2.74 0.43 1305 6.15 2.64 0.43 1388 6.00 2.58 0.43 1425 26 24 6.70 2.08 0.31 1365 6.45 2.00 0.31 1440 6.30 1.95 0.31 1485 26 26 6.90 1.31 0.19 1440 6.70 1.27 0.19 1515 6.60 1.25 0.19 1560 27 18 5.88 4.17 0.71 1200 5.63 3.99 0.71 1260 5.40 3.83 0.71 1320 27 20 6.13 3.61 0.59 1260 5.88 3.47 0.59 1335 5.70 3.36 0.59 1365 27 22 6.38 3.00 0.47 1305 6.15 2.89 0.47 1388 6.00 2.82 0.47 1425 27 24 6.70 2.35 0.35 1365 6.45 2.26 0.35 1440 6.30 2.21 0.35 1485 27 26 6.90 1.59 0.23 1440 6.70 1.54 0.23 1515 6.60 1.52 0.23 1560 28 18 5.88 4.41 0.75 1200 5.63 4.22 0.75 1260 5.40 4.05 0.75 1320 28 20 6.13 3.86 0.63 1260 5.88 3.70 0.63 1335 5.70 3.59 0.63 1365 28 22 6.38 3.25 0.51 1305 6.15 3.14 0.51 1388 6.00 3.06 0.51 1425 28 24 6.70 2.61 0.39 1365 6.45 2.52 0.39 1440 6.30 2.46 0.39 1485 28 26 6.90 1.86 0.27 1440 6.70 1.81 0.27 1515 6.60 1.78 0.27 1560 29 18 5.88 4.64 0.79 1200 5.63 4.44 0.79 1260 5.40 4.27 0.79 1320 29 20 6.13 4.10 0.67 1260 5.88 3.94 0.67 1335 5.70 3.82 0.67 1365 29 22 6.38 3.51 0.55 1305 6.15 3.38 0.55 1388 6.00 3.30 0.55 1425 29 24 6.70 2.88 0.43 1365 6.45 2.77 0.43 1440 6.30 2.71 0.43 1485 29 26 6.90 2.14 0.31 1440 6.70 2.08 0.31 1515 6.60 2.05 0.31 1560 30 18 5.88 4.88 0.83 1200 5.63 4.67 0.83 1260 5.40 4.48 0.83 1320 30 20 6.13 4.35 0.71 1260 5.88 4.17 0.71 1335 5.70 4.05 0.71 1365 30 22 6.38 3.76 0.59 1305 6.15 3.63 0.59 1388 6.00 3.54 0.59 1425 30 24 6.70 3.15 0.47 1365 6.45 3.03 0.47 1440 6.30 2.96 0.47 1485 30 26 6.90 2.42 0.35 1440 6.70 2.35 0.35 1515 6.60 2.31 0.35 1560 31 18 5.88 5.11 0.87 1200 5.63 4.89 0.87 1260 5.40 4.70 0.87 1320 31 20 6.13 4.59 0.75 1260 5.88 4.41 0.75 1335 5.70 4.28 0.75 1365 31 22 6.38 4.02 0.63 1305 6.15 3.87 0.63 1388 6.00 3.78 0.63 1425 31 24 6.70 3.42 0.51 1365 6.45 3.29 0.51 1440 6.30 3.21 0.51 1485 31 26 6.90 2.69 0.39 1440 6.70 2.61 0.39 1515 6.60 2.57 0.39 1560 32 18 5.88 5.35 0.91 1200 5.63 5.12 0.91 1260 5.40 4.91 0.91 1320 32 20 6.13 4.84 0.79 1260 5.88 4.64 0.79 1335 5.70 4.50 0.79 1365 32 22 6.38 4.27 0.67 1305 6.15 4.12 0.67 1388 6.00 4.02 0.67 1425 32 24 6.70 3.69 0.55 1365 6.45 3.55 0.55 1440 6.30 3.47 0.55 1485 32 26 6.90 2.97 0.43 1440 6.70 2.88 0.43 1515 6.60 2.84 0.43 1560

5.20

2.44

0.47

1380

5.50

1.93

0.35

1425

5.20

2.65

0.51

1380

5.50

2.15

0.39

1425

5.75

1.55

0.27

1485

5.20

2.86

0.55

1380

5.50

2.37

0.43

1425

5.75

1.78

0.31

1485

5.20

3.07

0.59

1380

5.50

2.59

0.47

1425

5.75

2.01

0.35

1485

6.10

1.40

0.23

1560

5.20

3.28

0.63

1380

5.50

2.81

0.51

1425

5.75

2.24

0.39

1485

6.10 1.65 0.27

1560

5.20

3.48

0.67

1380

5.50

3.03

0.55

1425

5.75

2.47

0.43

1485

6.10

1.89

0.31

1560

6.40

1.22

0.19

1605

5.20

3.69

0.71

1380

5.50

3.25

0.59

1425

5.75

2.70

0.47

1485

6.10

2.14

0.35

1560

6.40

1.47

0.23

1605

5.20

3.90

0.75

1380

5.50

3.47

0.63

1425

5.75

2.93

0.51

1485

6.10

2.38

0.39

1560

6.40

1.73

0.27

1605

5.20

4.11

0.79

1380

5.50

3.69

0.67

1425

5.75

3.16

0.55

1485

6.10

2.62

0.43

1560

6.40

1.98

0.31

1605

5.20

4.32

0.83

1380

5.50

3.91

0.71

1425

5.75

3.39

0.59

1485

6.10

2.87

0.47

1560

6.40

2.24

0.35

1605

5.20

4.52

0.87

1380

5.50

4.13

0.75

1425

5.75

3.62

0.63

1485

6.10

3.11

0.51

1560

6.40

2.50

0.39

1605

5.20

4.73

0.91

1380

5.50

4.35

0.79

1425

5.75

3.85

0.67

1485

6.10

3.36

0.55

1560

6.40

2.75

0.43

1605

PERFORMANCE DATA COOL operation at Rated frequency

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

20

INDOOR INDOOR

CAPACITY: 5.0(kW)

INPUT: 1460(W)SHF: 0.65

35

OUTDOOR DB(°C)

40 43 46

WB(°C)

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

DB(°C)

21 18 21 20 22 18 22 20 22 22 23 18 23 20 23 22 24 18 24 20 24 22 24 24 25 18 25 20 25 22 25 24 26 18 26 20 26 22 26 24 26 26 27 18 27 20 27 22 27 24 27 26 28 18 28 20 28 22 28 24 28 26 29 18 29 20 29 22 29 24 29 26 30 18 30 20 30 22 30 24 30 26 31 18 31 20 31 22 31 24 31 26 32 18 32 20 32 22 32 24 32 26

4.90 2.30 0.47 1470 4.50 2.12 0.47 1560

5.15 1.80 0.35 1530 4.80 1.68 0.35 1605

4.90 2.50 0.51 1470 4.50 2.30 0.51 1560

5.15 2.01 0.39 1530 4.80 1.87 0.39 1605

5.45 1.47 0.27 1590 5.10 1.38 0.27 1680

4.90 2.70 0.55 1470 4.50 2.48 0.55 1560

5.15 2.21 0.43 1530 4.80 2.06 0.43 1605

5.45 1.69 0.31 1590 5.10 1.58 0.31 1680

4.90 2.89 0.59 1470 4.50 2.66 0.59 1560

5.15 2.42 0.47 1530 4.80 2.26 0.47 1605

5.45 1.91 0.35 1590 5.10 1.79 0.35 1680

5.75 1.32 0.23 1650 5.40 1.24 0.23 1725

4.90 3.09 0.63 1470 4.50 2.84 0.63 1560

5.15 2.63 0.51 1530 4.80 2.45 0.51 1605

5.45 2.13 0.39 1590 5.10 1.99 0.39 1680

5.75 1.55 0.27 1650 5.40 1.46 0.27 1725

4.90 3.28 0.67 1470 4.50 3.02 0.67 1560

5.15 2.83 0.55 1530 4.80 2.64 0.55 1605

5.45 2.34 0.43 1590 5.10 2.19 0.43 1680

5.75 1.78 0.31 1650 5.40 1.67 0.31 1725

6.05 1.15 0.19 1710 5.70 1.08 0.19 1785

4.90 3.48 0.71 1470 4.50 3.20 0.71 1560

5.15 3.04 0.59 1530 4.80 2.83 0.59 1605

5.45 2.56 0.47 1590 5.10 2.40 0.47 1680

5.75 2.01 0.35 1650 5.40 1.89 0.35 1725

6.05 1.39 0.23 1710 5.70 1.31 0.23 1785

4.90 3.68 0.75 1470 4.50 3.38 0.75 1560

5.15 3.24

0.63

1530 4.80 3.02 0.63 1605

5.45 2.78 0.51 1590 5.10 2.60 0.51 1680

5.75 2.24 0.39 1650 5.40 2.11 0.39 1725

6.05 1.63 0.27 1710 5.70 1.54 0.27 1785

4.90 3.87 0.79 1470 4.50 3.56 0.79 1560

5.15 3.45 0.67 1530 4.80 3.22 0.67 1605

5.45 3.00 0.55 1590 5.10 2.81 0.55 1680

5.75 2.47 0.43 1650 5.40 2.32 0.43 1725

6.05 1.88 0.31 1710 5.70 1.77 0.31 1785

4.90 4.07 0.83 1470 4.50 3.74 0.83 1560

5.15 3.66 0.71 1530 4.80 3.41 0.71 1605

5.45 3.22 0.59 1590 5.10 3.01 0.59 1680

5.75 2.70 0.47 1650 5.40 2.54 0.47 1725

6.05 2.12 0.35 1710 5.70 2.00 0.35 1785

4.90 4.26 0.87 1470 4.50 3.92 0.87 1560

5.15 3.86 0.75 1530 4.80 3.60 0.75 1605

5.45 3.43 0.63 1590 5.10 3.21 0.63 1680

5.75 2.93 0.51 1650 5.40 2.75 0.51 1725

6.05 2.36 0.39 1710 5.70 2.22 0.39 1785

4.90 4.46 0.91 1470 4.50 4.10 0.91 1560

5.15 4.07 0.79 1530 4.80 3.79 0.79 1605

5.45 3.65 0.67 1590 5.10 3.42 0.67 1680

5.75 3.16 0.55 1650 5.40 2.97 0.55 1725

6.05 2.60 0.43 1710 5.70 2.45 0.43 1785

4.33 2.03 0.47 1590 4.15 1.95 0.47 1620

4.63 1.62 0.35 1650 4.45 1.56 0.35 1695

4.33 2.21 0.51 1590 4.15 2.12 0.51 1620

4.63 1.80 0.39 1650 4.45 1.74 0.39 1695

4.93 1.33 0.27 1710 4.75 1.28 0.27 1740

4.33 2.38 0.55 1590 4.15 2.28 0.55 1620

4.63 1.99 0.43 1650 4.45 1.91 0.43 1695

4.93 1.53 0.31 1710 4.75 1.47 0.31 1740

4.33 2.55 0.59 1590 4.15 2.45 0.59 1620

4.63 2.17 0.47 1650 4.45 2.09 0.47 1695

4.93 1.72 0.35 1710 4.75 1.66 0.35 1740

5.25 1.21 0.23 1763 5.10 1.17 0.23 1800

4.33 2.72 0.63 1590 4.15 2.61 0.63 1620

4.63 2.36 0.51 1650 4.45 2.27 0.51 1695

4.93 1.92 0.39 1710 4.75 1.85 0.39 1740

5.25 1.42 0.27 1763 5.10 1.38 0.27 1800

4.33 2.90 0.67 1590 4.15 2.78 0.67 1620

4.63 2.54 0.55 1650 4.45 2.45 0.55 1695

4.93 2.12 0.43 1710 4.75 2.04 0.43 1740

5.25 1.63 0.31 1763 5.10 1.58 0.31 1800

5.53 1.05 0.19 1823 5.35 1.02 0.19 1860

4.33 3.07 0.71 1590 4.15 2.95 0.71 1620

4.63 2.73 0.59 1650 4.45 2.63 0.59 1695

4.93 2.31 0.47 1710 4.75 2.23 0.47 1740

5.25 1.84 0.35 1763 5.10 1.79 0.35 1800

5.53 1.27 0.23 1823 5.35 1.23 0.23 1860

4.33 3.24 0.75 1590 4.15 3.11 0.75 1620

4.63 2.91 0.63 1650 4.45 2.80 0.63 1695

4.93 2.51 0.51 1710 4.75 2.42 0.51 1740

5.25 2.05 0.39 1763 5.10 1.99 0.39 1800

5.53 1.49 0.27 1823 5.35 1.44 0.27 1860

4.33 3.42 0.79 1590 4.15 3.28 0.79 1620

4.63 3.10 0.67 1650 4.45 2.98 0.67 1695

4.93 2.71 0.55 1710 4.75 2.61 0.55 1740

5.25 2.26 0.43 1763 5.10 2.19 0.43 1800

5.53 1.71 0.31 1823 5.35 1.66 0.31 1860

4.33 3.59 0.83 1590 4.15 3.44 0.83 1620

4.63 3.28 0.71 1650 4.45 3.16 0.71 1695

4.93 2.91 0.59 1710 4.75 2.80 0.59 1740

5.25 2.47 0.47 1763 5.10 2.40 0.47 1800

5.53 1.93 0.35 1823 5.35 1.87 0.35 1860

4.33 3.76 0.87 1590 4.15 3.61 0.87 1620

4.63 3.47 0.75 1650 4.45 3.34 0.75 1695

4.93 3.10 0.63 1710 4.75 2.99 0.63 1740

5.25 2.68 0.51 1763 5.10 2.60 0.51 1800

5.53 2.15 0.39 1823 5.35 2.09 0.39 1860

4.33 3.94 0.91 1590 4.15 3.78 0.91 1620

4.63 3.65 0.79 1650 4.45 3.52 0.79 1695

4.93 3.30 0.67 1710 4.75 3.18 0.67 1740

5.25 2.89 0.55 1763 5.10 2.81 0.55 1800

5.53 2.38 0.43 1823 5.35 2.30 0.43 1860

PERFORMANCE DATA COOL operation at Rated frequency

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

MSZ-GA50VA: MUZ-GA50VA

21

PERFORMANCE DATA COOL operation at Rated frequency

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

MSZ-GA60VA: MUZ-GA60VA

INDOOR INDOOR

CAPACITY: 6.0(kW)

INPUT: 1930(W)SHF: 0.64

21

OUTDOOR DB(°C)

25 27 30

WB(°C)

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

DB(°C)

21 18 21 20 22 18 22 20 22 22 23 18 23 20 23 22 24 18 24 20 24 22 24 24 25 18 25 20 25 22 25 24 26 18 26 20 26 22 26 24 26 26 27 18 27 20 27 22 27 24 27 26 28 18 28 20 28 22 28 24 28 26 29 18 29 20 29 22 29 24 29 26 30 18 30 20 30 22 30 24 30 26 31 18 31 20 31 22 31 24 31 26 32 18 32 20 32 22 32 24 32 26

7.057.05 3.24 0.46 1560 6.75 3.11 0.46 1638 6.48 2.98 0.46 1716

7.35 2.50 0.34 1638 7.05 2.40 0.34 1736 6.84 2.33 0.34 1775

7.05 3.53 0.50 1560 6.75 3.38 0.50 1638 6.48 3.24 0.50 1716

7.35 2.79 0.38 1638 7.05 2.68 0.38 1736 6.84 2.60 0.38 1775

7.65 1.99 0.26 1697 7.38 1.92 0.26 1804 7.20 1.87 0.26 1853

7.05 3.81 0.54 1560 6.75 3.65 0.54 1638 6.48 3.50 0.54 1716

7.35 3.09 0.42 1638 7.05 2.96 0.42 1736 6.84 2.87 0.42 1775

7.65 2.30 0.30 1697 7.38 2.21 0.30 1804 7.20 2.16 0.30 1853

7.05 4.09 0.58 1560 6.75 3.92 0.58 1638 6.48 3.76 0.58 1716

7.35 3.38 0.46 1638 7.05 3.24 0.46 1736 6.84 3.15 0.46 1775

7.65 2.60 0.34 1697 7.38 2.51 0.34 1804 7.20 2.45 0.34 1853

8.04 1.77 0.22 1775 7.74 1.70 0.22 1872 7.56 1.66 0.22 1931

7.05 4.37 0.62 1560 6.75 4.19 0.62 1638 6.48 4.02 0.62 1716

7.35 3.68 0.50 1638 7.05 3.53 0.50 1736 6.84 3.42 0.50 1775

7.65 2.91 0.38 1697 7.38 2.80 0.38 1804 7.20 2.74 0.38 1853

8.04 2.09 0.26 1775 7.74 2.01 0.26 1872 7.56 1.97 0.26 1931

7.05 4.65 0.66 1560 6.75 4.46 0.66 1638 6.48 4.28 0.66 1716

7.35 3.97 0.54 1638 7.05 3.81 0.54 1736 6.84 3.69 0.54 1775

7.65 3.21 0.42 1697 7.38 3.10 0.42 1804 7.20 3.02 0.42 1853

8.04 2.41 0.30 1775 7.74 2.32 0.30 1872 7.56 2.27 0.30 1931

8.28 1.49 0.18 1872 8.04 1.45 0.18 1970 7.92 1.43 0.18 2028

7.05 4.94 0.70 1560 6.75 4.73 0.70 1638 6.48 4.54 0.70 1716

7.35 4.26 0.58 1638 7.05 4.09 0.58 1736 6.84 3.97 0.58 1775

7.65 3.52 0.46 1697 7.38 3.39 0.46 1804 7.20 3.31 0.46 1853

8.04 2.73 0.34 1775 7.74 2.63 0.34 1872 7.56 2.57 0.34 1931

8.28 1.82 0.22 1872 8.04 1.77 0.22 1970 7.92 1.74 0.22 2028

7.05 5.22 0.74 1560 6.75 5.00 0.74 1638 6.48 4.80 0.74 1716

7.35 4.56 0.62 1638 7.05 4.37 0.62 1736 6.84 4.24 0.62 1775

7.65 3.83 0.50 1697 7.38 3.69 0.50 1804 7.20 3.60 0.50 1853

8.04 3.06 0.38 1775 7.74 2.94 0.38 1872 7.56 2.87 0.38 1931

8.28 2.15 0.26 1872 8.04 2.09 0.26 1970 7.92 2.06 0.26 2028

7.05 5.50 0.78 1560 6.75 5.27 0.78 1638 6.48 5.05 0.78 1716

7.35 4.85 0.66 1638 7.05 4.65 0.66 1736 6.84 4.51 0.66 1775

7.65 4.13 0.54 1697 7.38 3.99 0.54 1804 7.20 3.89 0.54 1853

8.04 3.38 0.42 1775 7.74 3.25 0.42 1872 7.56 3.18 0.42 1931

8.28 2.48 0.30 1872 8.04 2.41 0.30 1970 7.92 2.38 0.30 2028

7.05 5.78 0.82 1560 6.75 5.54 0.82 1638 6.48 5.31 0.82 1716

7.35 5.15 0.70 1638 7.05 4.94 0.70 1736 6.84 4.79 0.70 1775

7.65 4.44 0.58 1697 7.38 4.28 0.58 1804 7.20 4.18 0.58 1853

8.04 3.70 0.46 1775 7.74 3.56 0.46 1872 7.56 3.48 0.46 1931

8.28 2.82 0.34 1872 8.04 2.73 0.34 1970 7.92 2.69 0.34 2028

7.05 6.06 0.86 1560 6.75 5.81 0.86 1638 6.48 5.57 0.86 1716

7.35 5.44 0.74 1638 7.05 5.22 0.74 1736 6.84 5.06 0.74 1775

7.65 4.74 0.62 1697 7.38 4.58 0.62 1804 7.20 4.46 0.62 1853

8.04 4.02 0.50 1775 7.74 3.87 0.50 1872 7.56 3.78 0.50 1931

8.28 3.15 0.38 1872 8.04 3.06 0.38 1970 7.92 3.01 0.38 2028

7.05 6.35 0.90 1560 6.75 6.08 0.90 1638 6.48 5.83 0.90 1716

7.35 5.73 0.78 1638 7.05 5.50 0.78 1736 6.84 5.34 0.78 1775

7.65 5.05 0.66 1697 7.38 4.87 0.66 1804 7.20 4.75 0.66 1853

8.04 4.34 0.54 1775 7.74 4.18 0.54 1872 7.56 4.08 0.54 1931

8.28 3.48 0.42 1872 8.04 3.38 0.42 1970 7.92 3.33 0.42 2028

6.24 2.87 0.46 1794

6.60 2.24 0.34 1853

6.24 3.12 0.50 1794

6.60 2.51 0.38 1853

6.90 1.79 0.26 1931

6.24 3.37 0.54 1794

6.60 2.77 0.42 1853

6.90 2.07 0.30 1931

6.24 3.62 0.58 1794

6.60 3.04 0.46 1853

6.90 2.35 0.34 1931

7.32 1.61 0.22 2028

6.24 3.87 0.62 1794

6.60 3.30 0.50 1853

6.90 2.62 0.38 1931

7.32 1.90 0.26 2028

6.24 4.12 0.66 1794

6.60 3.56 0.54 1853

6.90 2.90 0.42 1931

7.32 2.20 0.30 2028

7.68 1.38 0.18 2087

6.24 4.37 0.70 1794

6.60 3.83 0.58 1853

6.90 3.17 0.46 1931

7.32 2.49 0.34 2028

7.68 1.69 0.22 2087

6.24 4.62 0.74 1794

6.60 4.09 0.62 1853

6.90 3.45 0.50 1931

7.32 2.78 0.38 2028

7.68 2.00 0.26 2087

6.24 4.87 0.78 1794

6.60 4.36 0.66 1853

6.90 3.73 0.54 1931

7.32 3.07 0.42 2028

7.68 2.30 0.30 2087

6.24 5.12 0.82 1794

6.60 4.62 0.70 1853

6.90 4.00 0.58 1931

7.32 3.37 0.46 2028

7.68 2.61 0.34 2087

6.24 5.37 0.86 1794

6.60 4.88 0.74 1853

6.90 4.28 0.62 1931

7.32 3.66 0.50 2028

7.68 2.92 0.38 2087

6.24 5.62 0.90 1794

6.60 5.15 0.78 1853

6.90 4.55 0.66 1931

7.32 3.95 0.54 2028

7.68 3.23 0.42 2087

22

INDOOR INDOOR

CAPACITY:6.0(kW)

INPUT:1930(W)SHF:0.64

35

OUTDOOR DB(°C)

40 43 46

WB(°C)

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

DB(°C)

21 18 21 20 22 18 22 20 22 22 23 18 23 20 23 22 24 18 24 20 24 22 24 24 25 18 25 20 25 22 25 24 26 18 26 20 26 22 26 24 26 26 27 18 27 20 27 22 27 24 27 26 28 18 28 20 28 22 28 24 28 26 29 18 29 20 29 22 29 24 29 26 30 18 30 20 30 22 30 24 30 26 31 18 31 20 31 22 31 24 31 26 32 18 32 20 32 22 32 24 32 26

5.19 2.39 0.46 2067 4.98 2.29 0.46 2106

5.55 1.89 0.34 2145 5.34 1.82 0.34 2204

5.19 2.60 0.50 2067 4.98 2.49 0.50 2106

5.55 2.11 0.38 2145 5.34 2.03 0.38 2204

5.91 1.54 0.26 2223 5.70 1.48 0.26 2262

5.19 2.80 0.54 2067 4.98 2.69 0.54 2106

5.55 2.33 0.42 2145 5.34 2.24 0.42 2204

5.91 1.77 0.30 2223 5.70 1.71 0.30 2262

5.19 3.01 0.58 2067 4.98 2.89 0.58 2106

5.55 2.55 0.46 2145 5.34 2.46 0.46 2204

5.91 2.01 0.34 2223 5.70 1.94 0.34 2262

6.30 1.39 0.22 2291 6.12 1.35 0.22 2340

5.19 3.22 0.62 2067 4.98 3.09 0.62 2106

5.55 2.78 0.50 2145 5.34 2.67 0.50 2204

5.91 2.25 0.38 2223 5.70 2.17 0.38 2262

6.30 1.64 0.26 2291 6.12 1.59 0.26 2340

5.19 3.43 0.66 2067 4.98 3.29 0.66 2106

5.55 3.00 0.54 2145 5.34 2.88 0.54 2204

5.91 2.48 0.42 2223 5.70 2.39 0.42 2262

6.30 1.89 0.30 2291 6.12 1.84 0.30 2340

6.63 1.19 0.18 2369 6.42 1.16 0.18 2418

5.19 3.63 0.70 2067 4.98 3.49 0.70 2106

5.55 3.22 0.58 2145 5.34 3.10 0.58 2204

5.91 2.72 0.46 2223 5.70 2.62 0.46 2262

6.30 2.14 0.34 2291 6.12 2.08 0.34 2340

6.63 1.46 0.22 2369 6.42 1.41 0.22 2418

5.19 3.84 0.74 2067 4.98 3.69 0.74 2106

5.55 3.44 0.62 2145 5.34 3.31 0.62 2204

5.91 2.96 0.50 2223 5.70 2.85 0.50 2262

6.30 2.39 0.38 2291 6.12 2.33 0.38 2340

6.63 1.72 0.26 2369 6.42 1.67 0.26 2418

5.19 4.05 0.78 2067 4.98 3.88 0.78 2106

5.55 3.66 0.66 2145 5.34 3.52 0.66 2204

5.91 3.19 0.54 2223 5.70 3.08 0.54 2262

6.30 2.65 0.42 2291 6.12 2.57 0.42 2340

6.63 1.99 0.30 2369 6.42 1.93 0.30 2418

5.19 4.26 0.82 2067 4.98 4.08 0.82 2106

5.55 3.89 0.70 2145 5.34 3.74 0.70 2204

5.91 3.43 0.58 2223 5.70 3.31 0.58 2262

6.30 2.90 0.46 2291 6.12 2.82 0.46 2340

6.63 2.25 0.34 2369 6.42 2.18 0.34 2418

5.19 4.46 0.86 2067 4.98 4.28 0.86 2106

5.55 4.11 0.74 2145 5.34 3.95 0.74 2204

5.91 3.66 0.62 2223 5.70 3.53 0.62 2262

6.30 3.15 0.50 2291 6.12 3.06 0.50 2340

6.63 2.52 0.38 2369 6.42 2.44 0.38 2418

5.19 4.67 0.90 2067 4.98 4.48 0.90 2106

5.55 4.33 0.78 2145 5.34 4.17 0.78 2204

5.91 3.90 0.66 2223 5.70 3.76 0.66 2262

6.30 3.40 0.54 2291 6.12 3.30 0.54 2340

6.63 2.78 0.42 2369 6.42 2.70 0.42 2418

5.88 2.70 0.46 1911 5.40 2.48 0.46 2028

6.18 2.10 0.34 1989 5.76 1.96 0.34 2087

5.88 2.94 0.50 1911 5.40 2.70 0.50 2028

6.18 2.35 0.38 1989 5.76 2.19 0.38 2087

6.54 1.70 0.26 2067 6.12 1.59 0.26 2184

5.88 3.18 0.54 1911 5.40 2.92 0.54 2028

6.18 2.60 0.42 1989 5.76 2.42 0.42 2087

6.54 1.96 0.30 2067 6.12 1.84 0.30 2184

5.88 3.41 0.58 1911 5.40 3.13 0.58 2028

6.18 2.84 0.46 1989 5.76 2.65 0.46 2087

6.54 2.22 0.34 2067 6.12 2.08 0.34 2184

6.90 1.52 0.22 2145 6.48 1.43 0.22 2243

5.88 3.65 0.62 1911 5.40 3.35 0.62 2028

6.18 3.09 0.50 1989 5.76 2.88 0.50 2087

6.54 2.49 0.38 2067 6.12 2.33 0.38 2184

6.90 1.79 0.26 2145 6.48 1.68 0.26 2243

5.88 3.88 0.66 1911 5.40 3.56 0.66 2028

6.18 3.34 0.54 1989 5.76 3.11 0.54 2087

6.54 2.75 0.42 2067 6.12 2.57 0.42 2184

6.90 2.07 0.30 2145 6.48 1.94 0.30 2243

7.26 1.31 0.18 2223 6.84 1.23 0.18 2321

5.88 4.12 0.70 1911 5.40 3.78 0.70 2028

6.18 3.58 0.58 1989 5.76 3.34 0.58 2087

6.54 3.01 0.46 2067 6.12 2.82 0.46 2184

6.90 2.35 0.34 2145 6.48 2.20 0.34 2243

7.26 1.60 0.22 2223 6.84 1.50 0.22 2321

5.88 4.35 0.74 1911 5.40 4.00 0.74 2028

6.18 3.83 0.62 1989 5.76 3.57 0.62 2087

6.54 3.27 0.50 2067 6.12 3.06 0.50 2184

6.90 2.62 0.38 2145 6.48 2.46 0.38 2243

7.26 1.89 0.26 2223 6.84 1.78 0.26 2321

5.88 4.59 0.78 1911 5.40 4.21 0.78 2028

6.18 4.08 0.66 1989 5.76 3.80 0.66 2087

6.54 3.53 0.54 2067 6.12 3.30 0.54 2184

6.90 2.90 0.42 2145 6.48 2.72 0.42 2243

7.26 2.18 0.30 2223 6.84 2.05 0.30 2321

5.88 4.82 0.82 1911 5.40 4.43 0.82 2028

6.18 4.33 0.70 1989 5.76 4.03 0.70 2087

6.54 3.79 0.58 2067 6.12 3.55 0.58 2184

6.90 3.17 0.46 2145 6.48 2.98 0.46 2243

7.26 2.47 0.34 2223 6.84 2.33 0.34 2321

5.88 5.06 0.86 1911 5.40 4.64 0.86 2028

6.18 4.57 0.74 1989 5.76 4.26 0.74

2087

6.54 4.05 0.62 2067 6.12 3.79 0.62 2184

6.90 3.45 0.50 2145 6.48 3.24 0.50 2243

7.26 2.76 0.38 2223 6.84 2.60 0.38 2321

5.88 5.29 0.90 1911 5.40 4.86 0.90 2028

6.18 4.82 0.78 1989 5.76 4.49 0.78 2087

6.54 4.32 0.66 2067 6.12 4.04 0.66 2184

6.90 3.73 0.54 2145 6.48 3.50 0.54 2243

7.26 3.05 0.42 2223 6.84 2.87 0.42 2321

PERFORMANCE DATA COOL operation at Rated frequency

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

MSZ-GA60VA: MUZ-GA60VA

23

INDOOR INDOOR

CAPACITY:7.1(kW)

INPUT:2420(W)SHF:0.63

21

OUTDOOR DB(°C)

25 27 30

WB(°C)

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

DB(°C)

21 18 21 20 22 18 22 20 22 22 23 18 23 20 23 22 24 18 24 20 24 22 24 24 25 18 25 20 25 22 25 24 26 18 26 20 26 22 26 24 26 26 27 18 27 20 27 22 27 24 27 26 28 18 28 20 28 22 28 24 28 26 29 18 29 20 29 22 29 24 29 26 30 18 30 20 30 22 30 24 30 26 31 18 31 20 31 22 31 24 31 26 32 18 32 20 32 22 32 24 32 26

8.34 3.75 0.45 1952 7.99 3.59 0.45 2050 7.67 3.45 0.45 2147

8.70 2.87 0.33 2050 8.34 2.75 0.33 2172 8.09 2.67 0.33 2220

8.34 4.09 0.49 1952 7.99 3.91 0.49 2050 7.67 3.76 0.49 2147

8.70 3.22 0.37 2050 8.34 3.09 0.37 2172 8.09 2.99 0.37 2220

9.05 2.26 0.25 2123 8.73 2.18 0.25 2257 8.52 2.13 0.25 2318

8.34 4.42 0.53 1952 7.99 4.23 0.53 2050 7.67 4.06 0.53 2147

8.70 3.57 0.41 2050 8.34 3.42 0.41 2172 8.09 3.32 0.41 2220

9.05 2.63 0.29 2123 8.73 2.53 0.29 2257 8.52 2.47 0.29 2318

8.34 4.76 0.57 1952 7.99 4.55 0.57 2050 7.67 4.37 0.57 2147

8.70 3.91 0.45 2050 8.34 3.75 0.45 2172 8.09 3.64 0.45 2220

9.05 2.99 0.33 2123 8.73 2.88 0.33 2257 8.52 2.81 0.33 2318

9.51 2.00 0.21 2220 9.16 1.92 0.21 2342 8.95 1.88 0.21 2416

8.34 5.09 0.61 1952 7.99 4.87 0.61 2050 7.67 4.68 0.61 2147

8.70 4.26 0.49 2050 8.34 4.09 0.49 2172 8.09 3.97 0.49 2220

9.05 3.35 0.37 2123 8.73 3.23 0.37 2257 8.52 3.15 0.37 2318

9.51 2.38 0.25 2220 9.16 2.29 0.25 2342 8.95 2.24 0.25 2416

8.34 5.42 0.65 1952 7.99 5.19 0.65 2050 7.67 4.98 0.65 2147

8.70 4.61 0.53 2050 8.34 4.42 0.53 2172 8.09 4.29 0.53 2220

9.05 3.71 0.41 2123 8.73 3.58 0.41 2257 8.52 3.49 0.41 2318

9.51 2.76 0.29 2220 9.16 2.66 0.29 2342 8.95 2.59 0.29 2416

9.80 1.67 0.17 2342 9.51 1.62 0.17 2464 9.37 1.59 0.17 2538

8.34 5.76 0.69 1952 7.99 5.51 0.69 2050 7.67 5.29 0.69 2147

8.70 4.96 0.57 2050 8.34 4.76 0.57 2172 8.09 4.61 0.57 2220

9.05 4.07 0.45 2123 8.73 3.93 0.45 2257 8.52 3.83 0.45 2318

9.51 3.14 0.33 2220 9.16 3.02 0.33 2342 8.95 2.95 0.33 2416

9.80 2.06 0.21 2342 9.51 2.00 0.21 2464 9.37 1.97 0.21 2538

8.34 6.09 0.73 1952 7.99 5.83 0.73 2050 7.67 5.60 0.73 2147

8.70 5.31 0.61 2050 8.34 5.09 0.61 2172 8.09 4.94 0.61 2220

9.05 4.44 0.49 2123 8.73 4.28 0.49 2257 8.52 4.17 0.49 2318

9.51 3.52 0.37 2220 9.16 3.39 0.37 2342 8.95 3.31 0.37 2416

9.80 2.45 0.25 2342 9.51 2.38 0.25 2464 9.37 2.34 0.25 2538

8.34 6.42 0.77 1952 7.99 6.15 0.77 2050 7.67 5.90 0.77 2147

8.70 5.65 0.65 2050 8.34 5.42 0.65 2172 8.09 5.26 0.65 2220

9.05 4.80 0.53 2123 8.73 4.63 0.53 2257 8.52 4.52 0.53 2318

9.51 3.90 0.41 2220 9.16 3.76 0.41 2342 8.95 3.67 0.41 2416

9.80 2.84 0.29 2342 9.51 2.76 0.29 2464 9.37 2.72 0.29 2538

8.34 6.76 0.81 1952 7.99 6.47 0.81 2050 7.67 6.21 0.81 2147

8.70 6.00 0.69 2050 8.34 5.76 0.69 2172 8.09 5.58 0.69 2220

9.05 5.16 0.57 2123 8.73 4.98 0.57 2257 8.52 4.86 0.57 2318

9.51 4.28 0.45 2220 9.16 4.12 0.45 2342 8.95 4.03 0.45 2416

9.80 3.23 0.33 2342 9.51 3.14 0.33 2464 9.37 3.09 0.33 2538

8.34 7.09 0.85 1952 7.99 6.79 0.85 2050 7.67 6.52 0.85 2147

8.70 6.35 0.73 2050 8.34 6.09 0.73 2172 8.09 5.91 0.73 2220

9.05 5.52 0.61 2123 8.73 5.33 0.61 2257 8.52 5.20 0.61 2318

9.51 4.66 0.49 2220 9.16 4.49 0.49 2342 8.95 4.38 0.49 2416

9.80 3.63 0.37 2342 9.51 3.52 0.37 2464 9.37 3.47 0.37 2538

8.34 7.42 0.89 1952 7.99 7.11 0.89 2050 7.67 6.82 0.89 2147

8.70 6.70 0.77 2050 8.34 6.42 0.77 2172 8.09 6.23 0.77 2220

9.05 5.88 0.65 2123 8.73 5.68 0.65 2257 8.52 5.54 0.65 2318

9.51 5.04 0.53 2220 9.16 4.85 0.53 2342 8.95 4.74 0.53 2416

9.80 4.02 0.41 2342 9.51 3.90 0.41 2464 9.37 3.84 0.41 2538

7.38 3.32 0.45 2245

7.81 2.58 0.33 2318

7.38 3.62 0.49 2245

7.81 2.89 0.37 2318

8.17 2.04 0.25 2416

7.38 3.91 0.53 2245

7.81 3.20 0.41 2318

8.17 2.37 0.29 2416

7.38 4.21 0.57 2245

7.81 3.51 0.45 2318

8.17 2.69 0.33 2416

8.66 1.82 0.21 2538

7.38 4.50 0.61 2245

7.81 3.83 0.49 2318

8.17 3.02 0.37 2416

8.66 2.17 0.25 2538

7.38 4.80 0.65 2245

7.81 4.14 0.53 2318

8.17 3.35 0.41 2416

8.66 2.51 0.29 2538

9.09 1.54 0.17 2611

7.38 5.09 0.69 2245

7.81 4.45 0.57 2318

8.17 3.67 0.45 2416

8.66 2.86 0.33 2538

9.09 1.91 0.21 2611

7.38 5.39 0.73 2245

7.81 4.76 0.61 2318

8.17 4.00 0.49 2416

8.66 3.20 0.37 2538

9.09 2.27 0.25 2611

7.38 5.69 0.77 2245

7.81 5.08 0.65 2318

8.17 4.33 0.53 2416

8.66 3.55 0.41 2538

9.09 2.64 0.29 2611

7.38 5.98 0.81 2245

7.81 5.39 0.69 2318

8.17 4.65 0.57 2416

8.66 3.90 0.45 2538

9.09 3.00 0.33 2611

7.38 6.28 0.85 2245

7.81 5.70 0.73 2318

8.17 4.98 0.61 2416

8.66 4.24 0.49 2538

9.09 3.36 0.37 2611

7.38 6.57 0.89 2245

7.81 6.01 0.77 2318

8.17 5.31 0.65 2416

8.66 4.59 0.53 2538

9.09 3.73 0.41 2611

PERFORMANCE DATA COOL operation at Rated frequency

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

MSZ-GA71VA: MUZ-GA71VA

24

INDOOR INDOOR

CAPACITY:7.1(kW)

INPUT:2420(W)SHF:0.63

35

OUTDOOR DB(°C)

40 43 46

WB(°C)

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

DB(°C)

21 18 21 20 22 18 22 20 22 22 23 18 23 20 23 22 24 18 24 20 24 22 24 24 25 18 25 20 25 22 25 24 26 18 26 20 26 22 26 24 26 26 27 18 27 20 27 22 27 24 27 26 28 18 28 20 28 22 28 24 28 26 29 18 29 20 29 22 29 24 29 26 30 18 30 20 30 22 30 24 30 26 31 18 31 20 31 22 31 24 31 26 32 18 32 20 32 22 32 24 32 26

6.14 2.76 0.45 2586 5.89 2.65 0.45 2635

6.57 2.17 0.33 2684 6.32 2.09 0.33 2757

6.14 3.01 0.49 2586 5.89 2.89 0.49 2635

6.57 2.43 0.37 2684 6.32 2.34 0.37 2757

6.99 1.75 0.25 2782 6.75 1.69 0.25 2830

6.14 3.25 0.53 2586 5.89 3.12 0.53 2635

6.57 2.69 0.41 2684 6.32 2.59 0.41 2757

6.99 2.03 0.29 2782 6.75 1.96 0.29 2830

6.14 3.50 0.57 2586 5.89 3.36 0.57 2635

6.57 2.96 0.45 2684 6.32 2.84 0.45 2757

6.99 2.31 0.33 2782 6.75 2.23 0.33 2830

7.46 1.57 0.21 2867 7.24 1.52 0.21 2928

6.14 3.75 0.61 2586 5.89 3.59 0.61 2635

6.57 3.22 0.49 2684 6.32 3.10 0.49 2757

6.99 2.59 0.37 2782 6.75 2.50 0.37 2830

7.46 1.86 0.25 2867 7.24 1.81 0.25 2928

6.14 3.99 0.65 2586 5.89 3.83 0.65 2635

6.57 3.48 0.53 2684 6.32 3.35 0.53 2757

6.99 2.87 0.41 2782 6.75 2.77 0.41 2830

7.46 2.16 0.29 2867 7.24 2.10 0.29 2928

7.85 1.33 0.17 2965 7.60 1.29 0.17 3026

6.14 4.24 0.69 2586 5.89 4.07 0.69 2635

6.57 3.74 0.57 2684 6.32 3.60 0.57 2757

6.99 3.15 0.45 2782 6.75 3.04 0.45 2830

7.46 2.46 0.33 2867 7.24 2.39 0.33 2928

7.85 1.65 0.21 2965 7.60 1.60 0.21 3026

6.14 4.48 0.73 2586 5.89 4.30 0.73 2635

6.57 4.01 0.61 2684 6.32 3.85 0.61 2757

6.99 3.43 0.49 2782 6.75 3.31 0.49 2830

7.46 2.76 0.37 2867 7.24 2.68 0.37 2928

7.85 1.96 0.25 2965 7.60 1.90 0.25 3026

6.14 4.73 0.77 2586 5.89 4.54 0.77 2635

6.57 4.27 0.65 2684 6.32 4.11 0.65 2757

6.99 3.71 0.53 2782 6.75 3.57 0.53 2830

7.46 3.06 0.41 2867 7.24 2.97 0.41 2928

7.85 2.28 0.29 2965 7.60 2.20 0.29 3026

6.14 4.97 0.81 2586 5.89 4.77 0.81 2635

6.57 4.53 0.69 2684 6.32 4.36 0.69 2757

6.99 3.99 0.57 2782 6.75 3.84 0.57 2830

7.46 3.35 0.45 2867 7.24 3.26 0.45 2928

7.85 2.59 0.33 2965 7.60 2.51 0.33 3026

6.14 5.22 0.85 2586 5.89 5.01 0.85 2635

6.57 4.79 0.73 2684 6.32 4.61 0.73 2757

6.99 4.27 0.61 2782 6.75 4.11 0.61 2830

7.46 3.65 0.49 2867 7.24 3.55 0.49 2928

7.85 2.90 0.37 2965 7.60 2.81 0.37 3026

6.14 5.47 0.89 2586 5.89 5.24 0.89 2635

6.57 5.06 0.77 2684 6.32 4.87 0.77 2757

6.99 4.55 0.65 2782 6.75 4.38 0.65 2830

7.46 3.95 0.53 2867 7.24 3.84 0.53 2928

7.85 3.22 0.41 2965 7.60 3.11 0.41 3026

6.96 3.13 0.45 2391 6.39 2.88 0.45 2538

7.31 2.41 0.33 2489 6.82 2.25 0.33 2611

6.96 3.41 0.49 2391 6.39 3.13 0.49 2538

7.31 2.71 0.37 2489 6.82 2.52 0.37 2611

7.74 1.93 0.25 2586 7.24 1.81 0.25 2733

6.96 3.69 0.53 2391 6.39 3.39 0.53 2538

7.31 3.00 0.41 2489 6.82 2.79 0.41 2611

7.74 2.24 0.29 2586 7.24 2.10 0.29 2733

6.96 3.97 0.57 2391 6.39 3.64 0.57 2538

7.31 3.29 0.45 2489 6.82 3.07 0.45 2611

7.74 2.55 0.33 2586 7.24 2.39 0.33 2733

8.17 1.71 0.21 2684 7.67 1.61 0.21 2806

6.96 4.24 0.61 2391 6.39 3.90 0.61 2538

7.31 3.58 0.49 2489 6.82 3.34 0.49 2611

7.74 2.86 0.37 2586 7.24 2.68 0.37 2733

8.17 2.04 0.25 2684 7.67 1.92 0.25 2806

6.96 4.52 0.65 2391 6.39 4.15 0.65 2538

7.31 3.88 0.53 2489 6.82 3.61 0.53 2611

7.74 3.17 0.41 2586 7.24 2.97 0.41 2733

8.17 2.37 0.29 2684 7.67 2.22 0.29 2806

8.59 1.46 0.17 2782 8.09 1.38 0.17 2904

6.96 4.80 0.69 2391 6.39 4.41 0.69 2538

7.31 4.17 0.57 2489 6.82 3.89 0.57 2611

7.74 3.48 0.45 2586 7.24 3.26 0.45 2733

8.17 2.69 0.33 2684 7.67 2.53 0.33 2806

8.59 1.80 0.21 2782 8.09 1.70 0.21 2904

6.96 5.08 0.73 2391 6.39 4.66 0.73 2538

7.31 4.46 0.61 2489 6.82 4.16 0.61 2611

7.74 3.79 0.49 2586 7.24 3.55 0.49 2733

8.17 3.02 0.37 2684 7.67 2.84 0.37 2806

8.59 2.15 0.25 2782 8.09 2.02 0.25 2904

6.96 5.36 0.77 2391 6.39 4.92 0.77 2538

7.31 4.75 0.65 2489 6.82 4.43 0.65 2611

7.74 4.10 0.53 2586 7.24 3.84 0.53 2733

8.17 3.35 0.41 2684 7.67 3.14 0.41 2806

8.59 2.49 0.29 2782 8.09 2.35 0.29 2904

6.96 5.64 0.81 2391 6.39 5.18 0.81 2538

7.31 5.05 0.69 2489 6.82 4.70 0.69 2611

7.74 4.41 0.57 2586 7.24 4.13 0.57 2733

8.17 3.67 0.45 2684 7.67 3.45 0.45 2806

8.59 2.84 0.33 2782 8.09 2.67 0.33 2904

6.96 5.91 0.85 2391 6.39 5.43 0.85 2538

7.31 5.34 0.73 2489 6.82 4.98 0.73 2611

7.74 4.72 0.61 2586 7.24 4.42 0.61 2733

8.17 4.00 0.49 2684 7.67 3.76 0.49 2806

8.59 3.18 0.37 2782 8.09 2.99 0.37 2904

6.96 6.19 0.89 2391 6.39 5.69 0.89 2538

7.31 5.63 0.77 2489 6.82 5.25 0.77 2611

7.74 5.03 0.65 2586 7.24 4.71 0.65 2733

8.17 4.33 0.53 2684 7.67 4.06 0.53 2806

8.59 3.52 0.41 2782 8.09 3.32 0.41 2904

PERFORMANCE DATA COOL operation at Rated frequency

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

MSZ-GA71VA: MUZ-GA71VA

25

CAPACITY:5.9(kW)

INPUT:1630(W)

OUTDOOR WB(°C)

3.72 1099 4.48 1318 5.25 1487 6.02 1606 6.79 1707 7.49 1758 8.26 1791

3.54 1183 4.25 1403 5.02 1555 5.72 1673 6.49 1758 7.20 1808 7.94 1876

3.19 1268 3.95 1487 4.66 1639 5.43 1758 6.20 1842 6.90 1893 7.67 1944

INDOOR

-10-5 0 5 101520

DB(°C)

Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 21 26

CAPACITY:6.8(kW)

INPUT:1940(W)

OUTDOOR WB(°C)

4.28 1294 5.17 1552

6.05

1751 6.94 1891 7.82 2010 8.64 2070 9.52 2109

4.08 1393 4.90 1652

5.78

1831 6.60 1970 7.48 2070 8.30 2129 9.15 2209

3.67 1493 4.56 1751

5.37

1930 6.26 2070 7.14 2169 7.96 2229 8.84 2289

INDOOR

-10-5 0 5 101520

DB(°C)

Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 21 26

CAPACITY:8.1(kW)

INPUT:2450(W)

OUTDOOR WB(°C)

INDOOR

-10-5 0 5 101520

DB(°C)

Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 21 26

5.10 1625 6.16 1950 7.21 2200 8.26 2375 9.32 2525 10.29 2600 11.34 2650

4.86 1750 5.83 2075 6.89 2300 7.86 2475 8.91 2600 9.88 2675 10.89 2775

4.37 1875 5.43 2200 6.40 2425 7.45 2600 8.51 2725 9.48 2800 10.53 2875

PERFORMANCE DATA HEAT operation at Rated frequency

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

MSZ-GA50VA : MUZ-GA50VA

MSZ-GA60VA : MUZ-GA60VA

MSZ-GA71VA : MUZ-GA71VA

26

9

ACTUATOR CONTROL

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

Relation between main sensor and actuator.

9-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR

9-2. 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.

ON

OFF

ON

OFF

Outdoor fan

Compressor

5 seconds 15 seconds

ON

OFF

Compressor

Outdoor fan

motor

R.V.coil

ON

OFF

ON

OFF

<COOL>

5 seconds

<HEAT>

5 seconds

ON or OFF

9-1. OUTDOOR FAN MOTOR CONTROL

The fan motor turns ON/OFF, interlocking with the compressor. [ON] The fan motor turns ON 5 seconds before the compressor starts up. [OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running.

Discharge temperature thermistor

Indoor coil temperature thermistor

Defrost thermistor

Fin temperature thermistor

Outdoor heat exchanger temperature

Ambient temperature thermistor

Purpose

Protection

Defrosting Protection

Defrosting

Protection

Compressor LEV

Outdoor fan motor

R.V. coil

Sensor

Actuator

27

SERVICE FUNCTIONS

10

TROUBLESHOOTING

11

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 OPERATION INDICATOR lamp is flashing on and off before starting service work.

2) Before servicing, check that the connector and terminal are connected properly.

3) When 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.

4) When troubleshooting, refer to 11-2, 11-3 and 11-4.

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 miswiring.

2. Take care of the following during servicing

1) Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and after confirming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug.

2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the electronic control P.C. board.

3) When removing the electrical parts, be careful to the residual voltage of smoothing capacitor.

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

5) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

Contents of “SERVICE FUNCTIONS” have been removed.

Lead wiring

Housing point

Incorrect

Correct

28

Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (11-4.) disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which does not recur.

11-2. FAILURE MODE RECALL FUNCTION

1. Flow chart of the indoor/outdoor unit failure mode recall function

Operational procedure

Yes

(Blinks)

No

(OFF)

Yes

No

Releasing the failure mode recall function

NOTE1. Make sure to release the failure mode recall function once it is set up, otherwise the unit cannot operate properly.

2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.

2. Blinking pattern when the indoor unit is abnormal:

W3.Blinking pattern when the outdoor unit is abnormal:

ON

OFF

Beeps

Repeated cycle Repeated cycle

ON

OFF

No beep Beeps

Repeated cycle

2.5-second OFF

Blinking at 0.5second interval

2.5-second OFF

3-second ON

Blinking at 0.5second interval

Beeps

Repeated cycle

2.5-second OFF

Blinking at 0.5second interval

No beep Beeps

Repeated cycle

2.5-second OFF 3-second ON

Blinking at 0.5second interval

Repeated cycle

Beeps

Does the left lamp of OPERATION INDICATOR lamp on the indoor unit blink at the interval of 0.5 seconds? Blinks: Either indoor or outdoor unit is abnormal. Beep is emitted at the same timing as the blinking of the left lamp of OPERATION INDICATOR lamp. 2

The cause of abnormality cannot be found because the abnormality does not recur.

Setting up the failure mode recall function

Before blinking, does the left lamp of OPERATION INDICATOR lamp stay ON for 3 seconds? Stays ON for 3 seconds (without beep): The outdoor unit is abnorma l.

The indoor unit is abnormal. Check the blinking pattern, and confirm the abnormal point with the indoor unit failure mode table (Refer to indoor unit service manual.) Make sure to check at least two consecutive blinking cycles. 2

Turn ON the power supply. <

Preparation of the remote controller

>

While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time, press RESET button.

First, release RESET button. Hold down the other two buttons for another 3 seconds. Confirm that the indicators on the LCD screen shown in the right figures are all displayed. Then release the buttons.

Deleting the memorized abnormal condition

After repairing the unit, recall the failure mode again according to

"Setting up the failure mode recall function" mentioned above.

Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed)

with the remote controller headed towards the indoor unit.

Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted. Release the failure mode recall function according to "Releasing the failure mode recall function"

mentioned above.

Repair the defective parts.

Release the failure mode recall function by the following procedures. Turn OFF the power supply and turn it ON again. Press RESET button of the remote controller.

Judgment of indoor/outdoor abnormality

Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor unit. 1

Indoor unit is normal. But the outdoor unit might be abnormal because there are some abnormalities that can't be recalled with this way. Confirm if outdoor unit is abnormal according to the detailed outdoor unit failure mode recall function.(Refer to 11-2.2)

The outdoor unit is abnormal. Check the blinking pattern, and confirm the abnormal point with the outdoor unit failure mode table (Refer to 11-2.3). Make sure to check at least two consecutive blinking cycles. 3

1. Regardless of normal or abnormal condition, a short

beep is emitted once the signal is received.

29

2. Flow chart of the detailed outdoor unit failure mode recall function

Operational procedure

NOTE1. Make sure to release the failure mode recall function once it is set up, otherwise the unit cannot operate properly.

2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.

2.Blinking pattern when outdoor unit is abnormal:

Yes

(Blinks)

No

(OFF)

ON

OFF

No beep

Beeps

Repeated cycle

2.5-second OFF

3-second ON

Blinking at 0.5second interval

No beep Beeps

Repeated cycle

2.5-second OFF 3-second ON

Blinking at 0.5-

second interval

Repeated cycle

1. Regardless of normal or abnormal condition, 2 short

beeps are emitted as the signal is received.

Does left lamp of OPERATION INDICATOR lamp on the indoor unit blink at the interval of 0.5 seconds? Blinks°C The outdoor unit is abnormal. Beep is emitted at the same timing as the blinking of the left lamp of OPERATION INDICATOR lamp. 2

Deleting the memorized abnormal condition

After repairing the unit, recall the failure mode again according to

"Setting up the failure mode recall function" mentioned above.

Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed)

with the remote controller headed towards the indoor unit.

Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted. Release the failure mode recall function according to "Releasing the failure mode recall function"

mentioned above.

Repair the defective parts.

With the remote controller headed towards the indoor unit, press TOO COOL or TOO WARM button to adjust the set temperature to 25°C. 1

The outdoor unit is normal.

Releasing the failure mode recall function

Release the failure mode recall function by the following procedures. Turn OFF the power supply and turn it ON again. Press RESET button of the remote controller.

The outdoor unit is abnormal. Check the blinking pattern, and confirm the abnormal point with the outdoor unit failure mode table (Refer to 11-2.3.). Make sure to check at least two consecutive blinking cycles. 2

Release the failure mode recall function according to the left mentioned procedure.

Confirm that the remote controller is in the failure mode recall function.

The outdoor unit might be abnormal. Confirm if outdoor unit is abnormal according to the following procedures.

30

3. Outdoor failure mode table

OFF None (Normal) 2-time flash

3-time flash

4-time flash

5-time flash

6-time flash

7-time flash

8-time flash

Lighting Lighting

Lighting Once

Lighting Once Lighting Twice

Lighting 3 times Lighting 4 times

Lighting 9 times

Once Goes

out

Lighting

3 times

Goes

out

4 times Goes

out

Lighting

5 times

9-time flash

10-time flash

• Check the connection of the compressor connecting wire.

• Refer to 11-4. "How to check inverter/compressor".

• Check the stop valve.

• Replace the outdoor electronic control P.C. board.

•Check refrigerant circuit and refrigerant amount.

• Refer to 11-6. "Check of LEV".

• Refer to 11-6. "Check of outdoor fan motor".

• Replace the outdoor electronic control P.C. board.

•Check refrigerant circuit and refrigerant amount.

• Refer to 11-6. "Check of LEV".

• Reconnect compressor connector.

• Refer to 11-6. "How to check inverter/ compressor."

• Check the stop valve.

•Check refrigerant circuit and refrigerant amount.

• Check the stop valve.

• Check around outdoor unit.

• Check outdoot unit air passage.

• Refer to 11-6. "Check of outdoor fan motor".

• Refer to 11-6. "Check of outdoor thermistors".

Overcurrent protection stop is continuously performed 3 times within 1 minute after the compressor gets started, or when converter protection stop or bus-bar voltage protection stop is continuously performed 3 times within 3 minutes after start-up.

Thermistor shorts or opens during compressor running.

28A current flows into intelligent power module.

High-pressure is detected with the high-pressure switch (HPS) during operation.

The outdoor heat exchanger temperature exceeds 70°Cduring cooling or the indoor gas pipe temperature exceeds 70°C during heating.

The fin temperature exceeds 87°C during operation.

The P.C. board temperature exceeds 70°C during operation.

Failure occurs continuously 3 times within 30 seconds after the fan gets started.

Nonvolatile memory data cannot be read properly.

The frequency of the compressor is kept 80Hz or more and the discharge temperature is kept under 39°C for more than 20

minutes.

Outdoor power system

Discharge temperature thermistor

Defrost thermistor Ambient temperature thermistor

Fin temperature thermistor P.C. board temperature

thermistor

Outdoor heat exchanger temperature thermistor

Overcurrent

Discharge temperature

High pressure

Fin temperature

P.C. board temperature

Outdoor fan motor

Nonvolatile memory data

Discharge temperature

--

Abnormal point

(Failure mode/protection)

Condition

Remedy

Indoor/outdoor

unit failure mode

recall function

LED indication

(Outdoor P.C. board)

LED 1 LED 2

Discharge temperature exceeds 116 °C during operation. Compressor can restart if discharge temperature thermistor reads 100°C or less 3 minutes later.

The left lamp of

OPERATION INDICAOR

lamp(Indoor unit)

31

11-time flash

• Check the connecting wire between outdoor electronic control P.C. board and power board.

• Replace the power board.

• Check the connecting wire among electronic control P.C. board, noise filter P.C. board and power board.

• Check the voltage of power supply.

• Replace the power board.

• Check the voltage of power supply.

• Replace the outdoor electronic control P.C. board.

The communication between boards protection stop is continuously performed twice.

Communication error occurs between the electronic control P.C. board and power board for more than 10 seconds.

Current sensor protection stop is continuously performed twice.

A short or open circuit is detected in the current sensor during compressor operating.

The protection stop of the zero cross detecting circuit is continuously performed 10 times.

Zero cross signal cannot be detected while the compressor is operating.

A failure is detected in the operation of the converter during operation.

The bus-bar voltage exceeds 400V or falls to 200V or below during compressor operating.

The bus-bar voltage exceeds 400V or falls to 50V or below during compressor operating.

Communication error between P.C. boards

Current sensor

Zero cross detecting circuit

Converter

Bus-bar voltage (1)

Bus-bar voltage (2)

Even if this protection stop is performed continuously 3 times, it does not mean the abnormality in outdoor power system.

Lighting 6 times

Lighting 7 times

5 times Goes

out

5 times

Goes

out

5 times

6 times

Goes

out

Goes

out

Abnormal point

(Failure mode/protection)

Condition

Remedy

Indoor/outdoor

unit failure mode

recall function

LED indication

(Outdoor P.C. board)

LED 1 LED 2

The left lamp of

OPERATION INDICATOR

lamp(Indoor unit)

NOTE: Blinking patterns of this mode differ from the ones of Troubleshooting check table (11-4.).

32

11-3. INSTRUCTION OF TROUBLESHOOTING

Start

Indoor unit Operates. Outdoor unit does not operate.

Indoor unit does not receive the signal from remote controller.

OPERATION INDICATOR lamp on the indoor unit is flashing on and off.

Outdoor unit operates only in Test Run operation. (Refer to 8-3.)

Outdoor unit does not operate even in Test Run operation. (Refer to 8-3.)

Indoor unit operates, when EMERGENCY OPERATION switch is pressed.

Indoor unit does not operate, when EMERGENCY OPERATION switch is pressed.

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

Refer to 11-6. "How to check inverter/ compressor".

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

1. Check indoor/outdoor connecting wire. (Check if the power is supplied to the indoor unit.)

2. Refer to "Check of indoor electronic control P.C. board and indoor fan motor".

Unit does not operate normal operation in COOL or HEAT mode.

Refer to 11-6. "Check of R.V. coil".

Left lamp Flash on and off at

0.5-second intervals Cause: Indoor/ Outdoor unit

• Mis-wiring or trouble of serial signal.

Left lamp 2-time flash Cause: Indoor unit

• Trouble of room temp erature/ indoor coil thermistor

Left lamp 3-time flash Cause: Indoor unit

• Trouble of indoor fan motor

Left

lamp 5-time flash Cause: Outdoor unit

• Outdoor power system abnormality

Left lamp 6-time flash Cause: Outdoor unit

• Trouble of thermistor in outdoor unit

Left lamp 7-time flash Cause: Outdoor unit

• Trouble of outdoor control system

Refer to 11-6. "How to check of mis-wiring and serial signal error".

“Test Run Operation” means the operation within 30 minutes after EMERGENCY OPERATION switch is pressed.

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

Refer to "Check of indoor fan motor".

Refer to 11-6. "How to check inverter/ compressor".

Refer to 11-6. "Check of outdoor thermistors".

Replace inverter P.C. board or outdoor electronic control P.C. board.

Left lamp 14-time flash Cause: Outdoor unit

• Other abnormality

Check 11-2.2. "Flow chart of the detailed outdoor unit failure mode recall function."

Left lamp 4-time flash Cause: Indoor unit

• Trouble of indoor unit control system

Replace the indoor electronic control P.C. board.

Refer to indoor unit service manual.

Indoor unit operates. Outdoor unit does not operate normally.

If blinking of OPERATION INDICATOR lamp cannot be checked, it can be checked with failure mode recall function.

33

11-4. TROUBLESHOOTING CHECK TABLE

LED1(Red) LED2(Yellow)

Lightning Twice Outdoor power system

• Check the connection of the compressor connecting wire.

• Refer to 11-6. "How to check inverter/compressor".

• Check the stop valve.

Lightning 3 times

Discharge temperature thermistor

• Refer to 11-6. "Check of outdoor thermistors".

Outdoor heat exchanger temperature thermistor

Defrost thermistor

Lightning 7 times Nonvolatile memory data • Replace the outdoor electronic control P.C. board.

Lightning 8 times Current sensor • Replace the power board.

Lightning 11 times

Communication error between P.C. boards

• Check the connecting wire between outdoor electronic control P.C. board and power board.

Lightning 12 times

Zero cross detecting circuit • Check the connecting wire among outdoor electronic control

P.C. board, noise filter P.C. board and power board.

Abnormal point/Condition

Remedy

A short circuit is detected in the thermistor during operation, or an open circuit is detected in the thermistor after 5 minutes (in cooling) and 10 minutes (in heating) of compressor start-up.

A short circuit is detected in the thermistor during operation, or an open circuit is detected in the thermistor after 5 minutes of compressor start-up.

• Refer to 11-6. "Check of outdoor thermistors".

• Replace the outdoor electronic control P.C. board.

Indication

Overcurrent protection stop is continuously performed 3 times within 1 minute after the compressor gets started, or when converter protection stop or bus-bar voltage protection stop is continuously performed 3 times within 3 minutes after start-up.

A short circuit is detected in the thermistor during operation, or an open circuit is detected in the thermistor after 10 minutes of compressor start-up.

Condition

The nonvolatile memory data cannot be read properly.

Lightning 6 times Serial signal

Fin temperature thermistor

P.C board temperature thermistor

Lightning 4 times

Ambient temperature thermistor

Current sensor protection stop is continuously performed twice.

The communication protection stop between boards is continuously performed twice.

The protection stop of the zero cross detecting circuit is continuously performed 10 times.

A short or open circuit is detected in the thermistor during operation.

5 timesLightning

Outdoor electronic control P.C. board (Parts side)

IPM protection

Lock protection

3 times Goes out

Discharge temperature protection

• Check the amount of gas and refrigerant circuit.

• Refer to 11-6. "Check of LEV".

Fin temperature protection

P.C. board temperature protection

High-pressure protection

8 times Goes out

Converter protection

• Replace the power board.

Bus-bar voltage protection (1)

• Check the voltage of power supply.

• Replace the power board or the outdoor electronic control P.C. board.

• Refer to 11-6. "Check of bus-bar voltage".

Bus-bar voltage protection (2)

13 times Goes out Outdoor fan motor • Refer to 11-6. "Check of outdoor fan motor".

Lighting 8 times

Current sensor protection

• Replace the power board.

Lighting 11 times

Communication between P.C. boards protection

• Check the connecting wire between outdoor electronic control P.C. board and power board.

Lighting 12 times

Zero cross detecting circuit protection

• Check the connecting wire among outdoor electronic control P.C. board, noise filter P.C. board and power board.

•Check refrigerant circuit and refrigerant amount.

•Refer to 11-6. "Check of outdoor fan motor".

• Check the amount of gas and the refrigerant circuit.

• Check stop valve.

• Reconnect compressor connector.

• Refer to 11-6. "How to check inverter/compressor".

• Check the stop valve.

• Check the power module (PAM module).

Twice Goes out

4 times Goes out

5 times Goes out

9 times Goes out

Overcurrent is detected after 30 seconds of compressor start-up.

Overcurrent is detected within 30 seconds of compressor start-up.

The bus-bar voltage exceeds 400V or falls to 200V or below during compressor operating.

The bus-bar voltage exceeds 400V or falls to 50V or below during compressor operating.

Discharge temperature exceeds 116°C during operation and compressor stops. Compressor can restart if discharge temperature thermistor reads 100°C or less 3 minutes later.

The fin temperature exceeds 87°C during operation.

The P.C. board temperature exceeds 70°C during operation.

High-pressure is detected with the high-pressure switch (HPS) during operation.

Failure occurs continuously 3 times within 30 seconds after the fan gets started.

A short or open circuit is detected in the current sensor during compressor operating.

Communication error occurs between the outdoor electronic control P.C. board and power board for more than 10 seconds.

Zero cross signal cannot be detected while the compressor is operating.

The outdoor heat exchanger temperature exceeds 70°C during cooling or indoor gas pipe temperature exceeds 70°C during heating.

A failure is detected in the operation of the converter during operation.

Outdoor unit does not operate.

Lighting

• Refer to 11-6. "How to check mis-wiring and serial signal error".

The communication fails between the indoor and outdoor unit for 3 minutes.

LED2

LED1

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

Symptom

'Outdoor unit stops and restarts 3 minutes later' is repeated.

The flashing frequency shows the number of times the LED blinks after every 2.5-second OFF. (Example) When the flashing frequency is “2”.

ON

OFF

2.5-second OFF

0.5-second ON

NOTE 1. The location of LED is illustrated at the right figure. Refer to 11-7.1.

2. LED is lighted during normal operation.

34

Primary current protection

Secondary current protection

High-pressure protection

Defrosting in cooling

3 times

Lighting

Discharge temperature protection

• Check refrigerant circuit and refrigerant amount.

• Refer to 11-6. "Check of LEV".

• Refer to 11-6. "Check of outdoor thermistors".

4 times

Lighting

Low discharge temperature protection

• Refer to 11-6. "Check of LEV".

• Check refrigerant circuit and refrigerant amount.

5 times

Lighting

Cooling high-pressure protection

This symptom does not mean any abnormality of the product, but check the following points.

• Check if indoor filters are clogged.

• Check if refrigerant is short.

• Check if indoor/outdoor unit air circulation is short cycled.

-

These symptoms do not mean any abnormality of the product, but check the following points.

• Check if indoor filters are clogged.

• Check if refrigerant is short.

• Check if indoor/outdoor unit air circulation is short cycled.

Twice Lighting

Once Lighting

The discharge temperature exceeds 100°C during operation.

The frequency of the compressor is kept 80Hz or more and the discharge temperature is kept under 39°C for more than 20 minutes.

The outdoor heat exchanger temperature exceeds 58°C during operation.

9 times

Lighting

Inverter check mode

Lighting

Normal

The unit is operated with emergency operation switch.

-

The input current exceeds 15A.

The current of the compressor exceeds 15A.

The indoor gas pipe temperature exceeds 45°C during heating.

The indoor gas pipe temperature falls 3°C or below during cooling.

LED1(Red) LED2(Yellow)

Abnormal point/Condition Remedy

Indication

Condition

Outdoor unit operates.

Outdoor unit operates

No.

Symptom

20

21

22

23

24

25

26

35

Part name Check method and criterion Figure Defrost thermistor (RT61)

Ambient temperature thermistor (RT65)

Outdoor heat exchanger temperature thermistor (RT68)

Measure the resistance with a tester.

Refer to 11-7. “Test point diagram and voltage”, 1. “Outdoor electronic control P.C. board”, for the chart of thermistor.

Discharge temperature thermistor (RT62)

Measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up.

Refer to 11-7. “Test point diagram and voltage”,1. “Outdoor electronic control P.C. board”, for the chart of thermistor.

Fin temperature thermistor (RT64)

Compressor

Measure the resistance between terminals using a tester. (Winding temperature: -10 °C ~ 40 °C)

Normal

GA50 GA60VA-

E1,E2

GA60VA-

E3

GA71VA

0.40 Ω ~ 0.49 Ω 0.86 Ω ~ 1.06 Ω 1.29 Ω ~ 1.49 Ω

Outdoor fan motor

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

Color of lead wire Normal

RED - BLK

13.4 Ω ~ 16.4 ΩBLK - WHT

WHT - RED

R. V. coil

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

Normal

MUZ-GA60VA

-

E3

Other models

1.32 kΩ ~ 1.62 kΩ 2.6 kΩ ~ 3.3 kΩ

Linear expansion valve

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

Color of lead wire Normal

WHT - RED

37.4 Ω ~ 53.9 Ω

RED - ORN

YLW - BRN BRN - BLU

High pressure switch (HPS)

MUZ-GA60VA

-

E3

MUZ-GA71VA

Pressure

3.7 ± 0.15 MPa Close

4.8 MPa Open

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

11-5. TROUBLE CRITERION OF MAIN PARTS

W

U

V

WHT

RED

BLK

RED

YLW

BRN

ORN

BL

U

LEV

WHT

U

RED

WHT

BLK

V

W

(W)

(V)

(U)

0.05

0.1

+

-

36

Check of power supply

Outdoor unit does not operate.

11-6. TROUBLESHOOTING FLOW

Turn ON power supply.

No

Yes

No

Yes

No

Yes

No

Replace the power board.

Check the connecting of parts of main power supply circuit.

Is there voltage of 230 VAC in the power supply terminal block?

Is the output voltage from the noise filter P.C. board 230 VAC?

Is the input voltage to the outdoor electronic control P.C. board 325 VDC?

Check the power supply cable.

Replace the outdoor electronic control P.C. board.

Replace the noise filter P.C. board.

Is fuse (F64) blown?

Is the input voltage to the power board 230 VAC?

Replace the fuse.

Replace the reactor.

37

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

B

• When unit cannot operate neither by the remote controller nor by EMERGENCY OPERATION switch. Indoor unit does not operate.

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

Is there rated voltage in the power supply?

Is there any mis-wiring, poor contact, or wire disconnection of the indoor/outdoor connecting wire?

1. Mis-wiring may damage indoor electronic control P.C. board during the operation. Be sure to confirm the wiring is correct before the operation starts.

3.Be sure to check this within 3 minutes after turning ON. After 3 minutes, LED blinks 6 times. Even when the inverter P.C.board or the outdoor electronic control P.C.board is normal, LED blinks 6 times after 3 minutes.

(Lighted or not lighted)

No

Yes

No

Yes

No

Yes

No

Yes

2 Be careful to the residual

voltage of smoothing capacitor.

Be sure to release the failure-mode recall function after checking.

No

Yes

No

Yes

No

Yes

Refer to indoor unit service manual.

Lighted Blinking

Turn OFF the power supply.

Turn ON the power supply.

Is there rated voltage between outdoor terminal block S1 and S2?

Does the left lamp of OPERATION INDICATOR lamp light up? <Confirmation of the power to the indoor unit>

Press EMERGENCY OPERATION switch once.

Check the power supply.

A

Turn OFF the power supply. Check once more if the indoor/outdoor connecting wire is not mis-wiring.

Short-circuit outdoor terminal block S2 and S3. 1

B

Turn ON the power supply.

Check the wiring.

Correct them.

Turn OFF the power supply. Remove the short-circuit between outdoor terminal block S2 and S3. Turn ON the power supply. Is there amplitude of 10 to 20V DC between outdoor terminal block S2 and S3? <Confirmation of serial signal>

Is there rated voltage between indoor terminal block S1 and S2? <Confirmation of power voltage>

Replace the indoor electronic control P.C. board.

Replace the inverter P.C. board or the outdoor electronic control P.C.board. 2

Is there any error of the indoor/outdoor connecting wire, such as the damage of the wire, intermediate connection, poor contact to the terminal block?

No

Replace the indoor/outdoor connecting wire.

Is serial signal error indicated 6 minutes later?

Yes

No

· Turn OFF inverter-controlled lighting equipment.

· Turn OFF the power supply and then turn ON again.

· Press EMERGENCY OPERATION switch.

B

· Reinstall either the unit or the light away from each other.

· Attach a filter on remote control receiving section of the indoor unit.

A

Is serial signal error indicated 6 minutes later?

No

Does the LED on the inverter P.C. board or the outdoor electronic control P.C.board repeat "3.6-second-OFF and 0.8-second-ON quick blinking"?

3

Outdoor electronic control P.C. board

(Parts side)

LED2

LED1

38

Check of R.V. coil

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

1. Disconnect the lead wire leading to the compressor.

2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in HEAT mode.

Is there voltage of 230 VAC between pin1 and pin 2 at connector CN912?

Turn OFF power supply of indoor and outdoor unit.

1. Turn OFF power supply of indoor and outdoor unit, and disconnect the connector CN781 in the outdoor electronic control P.C. board.

2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in HEAT mode.

Replace the 4-way valve.

Replace the noise filter P.C. board.

Replace the R.V. coil.

Is there voltage 12 VDC between the connector CN781 pin 5 (+) and pin 3 (-)?

Replace the electronic control P.C. board.

Disconnect the connector CN912 in noise filter P. C. board. Is there normal resistance to R.V. coil?

1. Disconnect the lead wire leading to the compressor.

2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in COOL mode.

Is there voltage of 230 VAC between pin1 and pin 2 at connector CN912?

1. Turn OFF power supply of indoor and outdoor unit, and disconnect the connector CN781 in the outdoor electronic control P.C. board.

2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in COOL mode.

Replace the 4-way valve.

Replace the noise filter P.C. board.

Is there voltage 12 VDC between the connector CN781 pin 5 (+) and pin 3 (-)?

Replace the outdoor electronic control P.C. board.

If the connector CN912 is not connected or R.V. coil is open, voltage occurs between terminals even when the control is OFF.

• When heating operation does not work.

• When cooling operation does not work.

The cooling operation or heating operation does not operate.

39

When OPERATION INDICATOR lamp flashes 5-time.

• When heating, room does not get warm.

• When cooling, room does not get cool.

Check of LEV

No

Yes

No

Yes

Turn ON power supply to the outdoor unit after checking LEV coil is mounted to the LEV body securely.

Is "click - click" sound heard? Or, do you feel vibration of the LEV coil with hands?

Disconnect the connector CN795. Is there normal resistance to LEV coil?

Normal

Replace the outdoor electronic control P.C. board.

Replace the LEV coil.

• When cooling, heat exchanger of non-operating indoor unit frosts.

• When heating, non-operating indoor unit gets warm.

How to check inverter/compressor

No

Yes

No

Yes

No

Disconnect the terminal of the compressor. 3 minutes after turning ON the power supply, start

EMERGENCY OPERATION.

Is output balanced?

Clarify the causes by counting time until the inverter stops. 0 to 10 seconds: compressor rare short 10 to 60 seconds: compressor lock 60 seconds to 5minutes: refrigerant circuit defective 5 minutes or more: normal

Measure the voltage between each lead wire leading to the compressor. U (BLK) - V (WHT) V (WHT) - W (RED) W (RED) - U (BLK) Is there output voltage?

Turn OFF power supply of indoor and outdoor unit, and measure the compressor winding resistance between the compressor terminals. Is the resistance between each terminal normal?

Is the input voltage to the outdoor electronic control P.C. board 370V or more?

Reconnect the lead wire of compressor, and turn ON power supply to indoor and outdoor unit. 3 minutes later, start EMERGENCY OPERATION.

Replace the compressor.

Replace the power board.

• After the outdoor fan starts running, wait for 1 minute or more before

measuring the voltage.

• The output voltage values have the tolerance of ± 20%.

40

Check of outdoor fan motor

• Fan motor does not operate or stops operating shortly after starting the operation.

Check of outdoor thermistors

• When OPERATION INDICATOR lamp flashes 6-time.

• When thermistor is abnormal.

Disconnect the connector in the outdoor electronic control P.C. board or the outdoor power board (see below table), and measure the resistance of thermistor. Is the thermistor normal? (Refer to 11-7.1.)

Does the unit operate for 10 minutes or more without showing thermistor abnormality?

Replace the thermistor.

Normal

Replace the outdoor electronic control P.C. board.

Yes

No

Reconnect the connector CN661, CN663 and CN3. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION.

Defrost Discharge temperature Outdoor heat exchanger temperature Ambient temperature Fin temperature

Symbol

RT61 RT62 RT68 RT65 RT64

Connector, Pin No.Thermistor Board Between CN661 pin1 and pin2 Between CN661 pin3 and pin4 Between CN661 pin7 and pin8 Between CN663 pin1 and pin2 Between CN3 pin1 and pin2

Outdoor electronic control P.C. board

Outdoor power board

When RT64 is abnormal, replace the

outdoor power

board.

Yes

No

Yes

No

(Fixed to either 5V or 0 VDC)

Check the connection between the connector CN931 and CN932.

Disconnect CN932 from outdoor electronic control P.C. board, and turn ON the power supply.

Rotate the outdoor fan motor manually and measure the voltage of CN931. Between (+) and (-) Between (+) and (-) Between (+) and (-)

Is the resistance between each terminal of outdoor fan motor normal?

Does the outdoor fan motor rotate smoothly?

Does the voltage between each terminal become 5 VDC and 0 VDC repeatedly?

Replace the outdoor DC fan motor.

Replace the outdoor electronic control P.C. board.

41

Check of HPS

• When the operation frequency does not go up from lowest frequency.

MUZ-GA60VA

-

E3

MUZ-GA71VA

Infinity

0Ω

No

Yes

1. Disconnect the connector CN681 in the electronic control P.C. board.

2. Check the resistance of HPS 1 minute after the outdoor unit power supply was turned OFF.

Check the resistance between each terminal.

Reconnect CN681. Turn ON power supply to the indoor and outdoor unit. 3 minutes later, start EMERGENCY OPERATION.

Is HPS protection displayed immediately after compressor starts?

Replace HPS.

Replace the electronic control P.C. board.

Normal

I Check of bus-bar voltage

•Check the voltage of power supply.

•Conﬁ rm outdoor unit failure mode recall function. (Refer to 11-2.2.)

Blink 5 times

Conﬁ rm LED1 indication lamp on the outdoor electronic control P.C. board.

Replace the power board.

Blink 9 times

Replace the outdoor electronic control P.C. board.

Turn OFF power supply before removing P.C. board.

Conﬁ rm LED1 indication lamp on the outdoor electronic control P.C. board.

Turn ON power supply. Start operation.

Blink 6 times

Replace the outdoor electronic control P.C. board .

Lighting

Replace the outdoor electronic control P.C. board.

Blink 9 times

Replace the power board.

Conﬁ rm LED1 indication lamp on the outdoor electronic control P.C. board.

Turn ON power supply. Start operation.

Normal

Lighting Lighting

42

Electromagnetic noise enters into TV sets or radios

J

Replace or repair the antenna. Replace or repair the coaxial cable.

No

Yes

No

Yes

Is the distance between the antennas and the indoor unit within 3m, or is the distance between the antennas and the outdoor unit within 3m?

Is the distance between the TV sets or radios and the indoor unit within 1m, or is the distance between the TV sets or radios and the outdoor unit within 3m?

Are the antennas damaged? Is the coaxial cable damaged? Is there any poor contact in the antenna wiring?

Is the indoor/outdoor connecting wire of the air conditioner and the wiring of the antennas close?

Even if all of the above conditions are fulfilled, the electromagnetic noise may enter, depending on the electric field strength or the installation condition (combination of specific conditions such as antennas or wiring). Check the followings before asking for service.

1.Devices affected by the electromagnetic noise TV sets, radios (FM/AM broadcast, shortwave)

2.Channel, frequency, broadcast station affected by the electromagnetic noise

3.Channel, frequency, broadcast station unaffected by the electromagnetic noise

4.Layout of ; indoor/outdoor unit of the air conditioner, indoor/outdoor wiring, earth wire, antennas, wiring from antennas, receiver

5.Electric field intensity of the broadcast station affected by the electromagnetic noise

6.Presence or absence of amplifier such as booster

7.Operation condition of air conditioner when the electromagnetic noise enters in

1)Turn OFF the power supply once, and then turn ON the power supply. In this situation, check for the electromagnetic noise.

2)Within 3 minutes after turning ON the power supply, press OPERATE/STOP (ON/OFF) button on the remote controller for power ON, and check for the electromagnetic noise.

3)After a short time (3 minutes later after turning ON), the outdoor unit starts running. During operation, check for the electromagnetic noise.

4)Press OPERATE/STOP (ON/OFF) button on the remote controller for power OFF, when the outdoor unit stops but the indoor/outdoor communication still runs on. In this situation, check for the electromagnetic noise.

Is the unit earthed?

Earth the unit.

Extend the distance between the antennas and the indoor unit, and/or the antennas and the outdoor unit.

Extend the distance between the TV sets and/or radios and the indoor unit, or the TV sets or radios and the outdoor unit.

Extend the distance between the indoor/outdoor connecting wire of the air conditioner and the wiring of the antennas.

43

-20-100 10203040

100

90

80

70

60

50

40

30

20

10

0

0 1020304050607080

200

180

160

140

120

100

80

60

40

20

0

Resistance (kΩ)

Temperature (°C)

Defrost thermistor (RT61) Ambient temperature thermistor (RT65) Outdoor heat exchanger temperature thermistor (RT68)

Fin temperature thermistor (RT64)

0 102030405060708090100110120

700

600

500

400

300

200

100

0

Resistance (kΩ)

Temperature (°C)

Discharge temperature thermistor (RT62)

11-7. TEST POINT DIAGRAM AND VOLTAGE

1. Outdoor electronic control P.C. board

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

LED 1

LED 2

CN801

325 VDC

-

370 VDC

Input

(

CN932

20-90 VAC

GND

5 V

5 VDC

pulse wave

(

To fan

motor

Defrost thermistor (RT61)

Discharge temperature

thermistor (RT62)

Outdoor heat exchanger

temperature thermistor (RT68)

(

(+)

(–)

(+)

(–)

Rush current relay

(–)R.V. coil

(

12 VDC

15 V

CN931

(+)

(–)

(

CN661

CN701

Signal transmission

(To power board)

5 VDC pulse wave

(+)

(–)

(

GND

CN702

Signal reception

(From power board)

5 VDC pulse wave

GND (power board)

CN781

CN795

12 VDC

pulse wave

LEV

(

F801

FUSE

T3.15AL250V

(

Ambient temperature

thermistor (RT65)

CN663

Serial signal Room A

5 - 10 VDC

CN601

230 VAC Input

CN681 High pressure switch

MUZ-GA60VA-

E3

MUZ-GA71VA

(

44

{

CN912 R.V. coil 230 VAC

230 VAC Input

230 VAC Output

{

CN901 To electronic control P.C. board

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

F64 FUSE T2AL250V

F911 FUSE T1AL250V

2. Noise filter P.C. board

CN902 To power board

{

CN903 To power board

{

230 VAC Output

NR64 VARISTOR

45

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

3. Outdoor power board

325-370 VDC Output

(Red)

(White)

Connect to the compressor Voltage among phases: 5 V to 180 V

Connect to the earth

CN5 Primary current detection (Connect to the noise filter)

CN2 Connect to the controller board (+)1-5(–): Signal transmission (To electronic control P.C. board) 5 VDC pulse wave (+)2-5(–): Zero cross signal 3-4 : Not used (+)6-5(–): 15 V (+)7-5(–): 15 V

(+)

(–)

Signal reception (From electronic control P.C. board) 5 VDC pulse wave

)

CN3 Fin temperature thermistor RT64

325-370 VDC Output

(Red)

(White)

Connect to the compressor Voltage among phases: 5V to 180V

Connect to the earth

CN5 Primary current detection (Connect to the noise filter)

CN2 Connect to the controller board (+)1-5(–): Signal transmission (To electronic control P.C. board) 5 VDC pulse wave (+)2-5(–): Zero cross signal 3-4 : Not used (+)6-5(–): 15 V (+)7-5(–): 15 V

(+)

(–)

Signal reception (From electronic control P.C. board) 5 VDC pulse wave

)

CN3 Fin temperature thermistor RT64

1

3

1

3

46

12

DISASSEMBLY INSTRUCTIONS

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

NOTE:

These photos are MUZ-GA71VA. Other models are almost the same as MUZ-GA71VA. Turn OFF power supply before disassembly.

OPERATING PROCEDURE PHOTOS

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) Disconnect the power supply and indoor/outdoor connecting wire. (8) Remove the screws of the cabinet. (9) Remove the cabinet. (10)

Remove the screws of the back panel.

(11)

Remove the back panel.

Photo 2

Photo 1

Photo 3

Screw of the top panel

Screws of the cabinet

Screws of the top panel

Screws of the cabinet

Screw of the service panel

Screw of the valve cover

Screw of the motor support

Set screws of the back panel

Screws of the back panel

(1) Slide the sleeve and check if there is a locking lever or not.

(2) The terminal with this connector has the locking mechanism.

Slide the sleeve. Pull the terminal while pushing the locking lever.

Hold the sleeve, and pull out the terminal slowly.

Connector

Sleeve

Locking lever

<"Terminal with locking mechanism" Detaching points>

The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching.

47

OPERATING PROCEDURE

PHOTOS

2. Removing the inverter assembly, inverter P.C. board and power board

(1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel.(Refer to 1.) (3) Disconnect the following connectors; <Electronic control P.C. board> CN931 and CN932 (Fan motor) CN795 (LEV) CN661 (Discharge temperature thermistor, defrost thermistor and outdoor heat exchanger temperature thermistor) CN663 (Ambient temperature thermistor) CN681 (High pressure switch) (GA60VA-

E3

, GA71VA) <Noise filter P.C. board> CN912 (R.V coil) (4) Remove the compressor connector. (5) Remove the screws fixing the relay panel. (6) Remove the inverter assembly. (7) Disconnect all connectors and lead wires on the electronic

control P.C. board.

(8) Remove the electronic control P.C. board from the inverter

assembly. (9) Remove the screws fixing the power board assembly. (10)

Disconnect all connectors and lead wires on the power

board. (11)

Remove the power board from the inverter assembly.

(12)

Disconnect all connectors and lead wires on the noise filter

P.C. board. (13)

Remove the noise filter P.C. board from the inverter

assembly.

Photo 4

3. Removing R.V. coil

(1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.) (3) Disconnect the following connectors; <Noise filter P.C. board> CN912 (R.V coil) (4) Remove the R.V. coil. (Photo 9)

Screws of the relay panel

Screws of the power board assembly

48

5. Removing outdoor fan motor

(1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.) (3) Disconnect the following connectors; <Electronic control P.C. board> CN931 and CN932 (Fan motor) (4) Remove the propeller. (5) Remove the screws fixing the fan motor. (6) Remove the fan motor.

Photo 7

Propeller

Screws of the outdoor fan motor

OPERATING PROCEDURE

PHOTOS

4. Removing the defrost thermistor, discharge temperature thermistor, outdoor heat exchanger temperature thermistor and ambient temperature thermistor

(1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.) (3) Disconnect the following connectors; <Electronic control P.C. board> CN661 (Discharge temperature thermistor, defrost thermistor and outdoor heat exchanger temperature thermistor) CN663 (Ambient temperature thermistor) (4) Pull out the defrost thermistor from its holder. (5) Pull out the discharge temperature thermistor from its holder. (6) Pull out the outdoor heat exchanger temperature thermistor

from its holder.

(7) Pull out the ambient temperature thermistor from its holder.

Photo 5

Photo 6

Defrost thermistor

Discharge temperature thermistor

Outdoor heat exchanger temperature thermistor

Ambient temperature thermistor

49

OPERATING PROCEDURE

PHOTOS

Photo 8

Brazed parts of 4-way valve

6. Removing the compressor and 4-way valve

(1) Remove the top panel, cabinet and service panel. (Refer to 1.) (2) Remove the back panel. (Refer to 1.) (3) Remove the inverter assembly. (Refer to 2.) (4) Recover gas from the refrigerant circuit.

NOTE: Recover gas from the pipes until the pressure

gauge shows 0 kg/cm2 (0 MPa).

(5) Detach the brazed part of the suction and the discharge

pipe connected with compressor.

(6) Remove the compressor nuts.

(7) Remove the compressor.

(8) Detach the brazed part of 4-way valve and pipe.

7. Removing the reactor

(1) Remove the top panel. (Refer to 1.) (2) Disconnect the reactor lead wire. (3) Remove the screws of the reactor, and remove the reactor.

Photo 10

Screws of the reactor

Photo 9

Brazed part of the discharge pipe

R.V. coil

Brazed part of the suction pipe

50

4

19

9

1

1310 12

2

5

6

7

8

16

14

20

22

23

24

25

293031

3

13

PARTS LIST (non-RoHS compliant)

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA 13-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

11

15

17

18

21

28

27

26

13-2. ACCESSORY

33

34

51

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA 13-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

No.

Part Name

MUZ-GA50 VA -

E1

MUZ-GA60 VA -

E1

MUZ-GA71 VA -

E1

E02 819 297 E02 851 630 E02 853 630 E02 938 301 E02 851 501 E02 851 290 E02 853 290 E02 819 232 E02 819 009 E02 819 521 E02 853 646 E12 C34 506 E02 853 506 E02 939 900 E02 853 900 E02 851 661 E02 819 661 E02 821 662 E02 822 662 E02 851 640 E02 853 640 E02 851 493 E02 853 299 E02 935 490 E02 891 961 E02 819 650 E02 819 245 E12 D01 450 E12 C96 450 E12 C97 450 E02 935 374 E02 823 375 E02 851 337 E02 935 444 E02 935 309 E02 851 308 E02 935 440 E02 819 233 E02 817 009 E02 851 515 E02 851 936 E02 853 936 E02 861 936

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 27 28 29 30 31

32

TOP PANEL OUTDOOR HEAT EXCHANGER OUTDOOR HEAT EXCHANGER OUTDOOR FAN MOTOR PROPELLER BASE BASE CABINET HANDLE FAN GUARD HIGH PRESSURE SWITCH COMPRESSOR RUBBER SET COMPRESSOR RUBBER SET COMPRESSOR COMPRESSOR STOP VALVE (GAS) STOP VALVE (GAS) STOP VALVE (LIQUID) STOP VALVE (LIQUID) EXPANSION VALVE EXPANSION VALVE EXPANSION VALVE COIL OIL SEPARATOR R.V. COIL 4-WAY VALVE VALVE COVER SERVICE PANEL OUTDOOR ELECTRONIC CONTROL P.C. BOARD OUTDOOR ELECTRONIC CONTROL P.C. BOARD OUTDOOR ELECTRONIC CONTROL P.C. BOARD TERMINAL BLOCK TERMINAL BLOCK REACTOR NOISE FILTER P.C. BOARD AMBIENT TEMPERATURE THERMISTOR THERMISTOR SET POWER BOARD BACK PANEL (OUT) HANDLE MOTOR SUPPORT CAPILLARY TUBE (TAPER PIPE) CAPILLARY TUBE (TAPER PIPE) CAPILLARY TUBE

RC0J60-

3RUBBERS/SET 3RUBBERS/SET SNB130FLDH1 TNB220FMCH Ø12.7 Ø15.88 Ø6.35 Ø9.52

3P 3P

Including heat sink and RT64

Ø3.6xØ2.4x50 Ø3.6xØ2.4x50 Ø1.8xØ0.6x1000

MF

HPS

MC MC

LEV

21S4

TB1 TB2

L

RT65

RT61,RT62,RT68

1 1

1 1 1

3

1

1 1

1

1 1 1 1

1

1 1 1 1 1 1 1 1 1 1 1

1 1

1 1 1

3

1

1 1 1 1 1

1 1 1 1 1 1 1 1 1 1 1

1

1 1 1

1 1 1 1 1

3

1

1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 1 1

1 1

DEFROST, DISCHARGE OUTDOOR HEAT EXCHANGER

Part number that is circled is not shown in the illustration.

PARTS LIST (non-RoHS compliant)

13-2. ACCESSORY

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

No.

Part Name

MUZ-GA50 VA -

E1

MUZ-GA60 VA -

E1

MUZ-GA71 VA -

E1

E02 817 704 E02 444 705

33 34

DRAIN SOCKET DRAIN CAP

Ø33

1 2

52

4

19

9

1

1310 12

2

5

6

7

8

16

14

20

22

23

24

25

293031

3

14

RoHS PARTS LIST (RoHS compliant)

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA 14-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

11

15

17

18

21

28

27

26

53

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA 14-1. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

RoHS

No.

Part Name

MUZ-GA50 VA -

E1

MUZ-GA60 VA -

E1 E2 E1 E2

MUZ-GA71 VA -

E12 819 297 E12 851 630 E12 853 630 E12 938 301 E12 851 501 E12 851 290 E12 853 290 E12 819 232 E12 819 009 E12 D84 521 E12 853 646 E12 C34 506 E12 853 506 E12 939 900 E12 C06 900 E12 C37 900 E12 853 900 E12 851 661 E12 819 661 E12 821 662 E12 822 662 E12 851 640 E12 853 640 E12 851 493 E12 853 299 E12 935 490 E12 D02 490 E12 891 961 E12 C18 961 E12 819 650 E12 819 245 E12 D01 450 E12 C96 450 E12 C97 450 E12 D02 450 E12 935 374 E12 823 375 E12 851 337 E12 935 444 E12 935 309 E12 851 308 E12 935 440 E12 B79 440 E12 819 233 E12 817 009 E12 851 515 E12 851 936 E12 853 936 E12 861 936

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 27

28

29 30 31

32

G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G

TOP PANEL OUTDOOR HEAT EXCHANGER OUTDOOR HEAT EXCHANGER OUTDOOR FAN MOTOR PROPELLER BASE BASE CABINET HANDLE FAN GUARD HIGH PRESSURE SWITCH COMPRESSOR RUBBER SET COMPRESSOR RUBBER SET COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR STOP VALVE (GAS) STOP VALVE (GAS) STOP VALVE (LIQUID) STOP VALVE (LIQUID) EXPANSION VALVE EXPANSION VALVE EXPANSION VALVE COIL OIL SEPARATOR R.V. COIL R.V. COIL 4-WAY VALVE 4-WAY VALVE VALVE COVER SERVICE PANEL OUTDOOR ELECTRONIC CONTROL P.C. BOARD OUTDOOR ELECTRONIC CONTROL P.C. BOARD OUTDOOR ELECTRONIC CONTROL P.C. BOARD OUTDOOR ELECTRONIC CONTROL P.C. BOARD TERMINAL BLOCK TERMINAL BLOCK REACTOR NOISE FILTER P.C. BOARD AMBIENT TEMPERATURE THERMISTOR THERMISTOR SET POWER BOARD POWER BOARD BACK PANEL(OUT) HANDLE MOTOR SUPPORT CAPILLARY TUBE(TAPER PIPE) CAPILLARY TUBE(TAPER PIPE) CAPILLARY TUBE

RC0J60-

Including ice guard

3RUBBERS/SET 3RUBBERS/SET SNB130FLDH1 SNB130FLEH1 SNB130FGBH TNB220FMCH Ø12.7 Ø15.88 Ø6.35 Ø9.52

3P 3P

Including heat sink and RT64

Ø3.6xØ2.4x50 Ø3.6xØ2.4x50 Ø1.8xØ0.6x1000

MF

HPS

MC MC MC MC

LEV

21S4 21S4

TB1 TB2

L

RT65

RT61,RT62,RT68

1 1

1 1 1

3

1

1 1

1

1 1

1

1 1 1 1 1 1 1

1 1 1 1

1

1 1 1 1

1 1 1

3

1

1 1

1

1 1 1

1

1 1

1

1 1 1 1 1 1 1

1 1 1 1

1

1 1

1 1 1

3

1

1 1 1

1 1 1 1 1 1 1

1 1 1 1

1

1 1 1

1 1 1 1 1

3

1

1 1 1 1

1

1 1

1

1 1 1 1 1 1 1

1 1 1

1 1

1

1 1 1

1 1 1 1 1

3

1

1 1 1 1

1

1 1

1

1 1 1 1 1 1 1

1 1 1

1 1

DEFROST, DISCHARGE OUTDOOR HEAT EXCHANGER

1 1

1 1 1

1 1 1 1 3

1

1 1

1

1 1 1

1 1 1 1 1 1 1

1 1 1 1 1

E3

Part number that is circled is not shown in the illustration.

RoHS PARTS LIST (RoHS compliant)

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA 14-2. ACCESSORY

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

No.

RoHS

Part Name

MUZ-GA50 VA -

E1

MUZ-GA60 VA -

MUZ-GA71 VA -

E12 817 704 E12 444 705

12G

G

DRAIN SOCKET DRAIN CAP

Ø33

1 2

121

2

E1 E2 E1 E2

1 2

E3

1

2

RoHS PARTS LIST (RoHS compliant)

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD Distributed in Jun. 2011. No. OB389 REVISED EDITION-H Distributed in Jun. 2010. No. OB389 REVISED EDITION-G 6 Distributed in Sep. 2007. No. OB389 REVISED EDITION-F 6 Distributed in Jul. 2007. No. OB389 REVISED EDITION-E 6 Distributed in Jun. 2007. No. OB389 REVISED EDITION-D 6 Distributed in Apr. 2007. No. OB389 REVISED EDITION-C 6 Distributed in Aug. 2006. No. OB389 REVISED EDITION-B 6 Distributed in Jun. 2006. No. OB389 REVISED EDITION-A 6 Distributed in Jan. 2005. No. OB389 6 Made in Japan

New publication, effective Jun. 2011 Specifications subject to change without notice.

Mitsubishi Electric MUZ-GA50VA-E1, MUZ-GA60VA-E1, MUZ-GA60VA-E2, MUZ-GA60VA-E3, MUZ-GA71VA-E1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual