Mitsubishi Electric MUZ-GA50VA, MUZ-GA60VA, MUZ-GA71VA Service Manual

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Page 1

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

HFC

utilized

R410A

OUTDOOR UNIT

SERVICE MANUAL

Wireless type Models

Revision F:

• MUZ-GA60VA- has been added.

Please void OB389 REVISED EDITION-E.

No. OB389

REVISED EDITION-F

MUZ-GA50VA MUZ-GA60VA MUZ-GA60VA MUZ-GA60VA MUZ-GA71VA MUZ-GA71VA -

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

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. ACTUA TOR CONTROL····································26

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

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

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

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

14. RoHS PARTS LIST···········································54

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.

Page 2

Revision A :

• RoHS PARTS LIST has been added.

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

• Check of HPS(11-6.H) has been corrected.

Revision B:

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

PARTS LIST number E02 851 900 E02 939 900

RoHS PARTS LIST number E12 851 900 E12 939 900

Previous New

Model SNB130FLDH SNB130FLDH1

Revision C:

• MUZ-GA60/71VA- have been added.

• Check of outdoor thermistors(11-6.F) 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- .

Revision F:

• MUZ-GA60VA- has been added.

Page 3

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

1730

From liquid phase in cylinder

Possible

Incompatible oil

Non Non

Previous refrigerant

R22

R22 (100%)

Single refrigerant

Included

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 (:) Steam pressure [25:](Mpa) Saturated steam density [25:](kg/K) Combustibility ODP w1 GWP w2 Refrigerant charge method Additional charge on leakage Kind Color Smell

w1:Ozone Depletion Potential : based on CFC-11 w2 :Grobal Warming Potential : based on CO

TECHNICAL CHANGES

MUZ-A18YV - ➔ MUZ-GA50VA MUZ-A24YV - ➔ MUZ-GA60VA MUZ-A26YV - ➔ MUZ-GA71VA -

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 - ➔ MUZ-GA60VA -

1.Compressor has been changed. (SNB130FLDH1 ➔ SNB130FLEH1)

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

MUZ-GA60VA - ➔ MUZ-GA60VA -

1.Compressor has been changed. (SNB130FLEH1 ➔ SNB130FGBH)

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

3.Refrigerant circuit has been changed.

MUZ-GA71VA - ➔ MUZ-GA71VA -

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

E1E1 E1E1 E1E1

E2E1

E3E2

E2E1

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.

1 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.

2 Take sufficient care not to allow water and other contaminations to enter the R410Arefrigerant during storage and

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

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

piping.)

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

composition change.

Page 4

-30 -20 -10 0 10 20

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

(:)

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.

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

NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).

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

The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])

NOTE : The unit of pressure has been changed to MPa on the

international system of units(SI unit system).

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.

The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/

[Gauge])

Page 5

2.Refrigerant piping

Wall thickness

Outside diameter

Pipe

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

1 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.

2 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”.

Pipe diameter

6.35

9.52

12.7

15.88

Dimension of flare nut

R410A

17 22 26 29

R22

17 22 24 27

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.

Union

Stop valve

Indoor unit

Refrigerant gas cylinder operating valve

Liquid pipe Gas pipe

Service port

Outdoor unit

Gauge manifold valve (for R410A)

Charge hose (for R410A)

Refrigerant gas cylinder for R410A with siphon

Refrigerant (liquid)

Electronic scale for refrigerant charging

Page 6

Air inlet

Piping

Air outlet

(back and side)

Drain hose

Drain outlet

PART NAMES AND FUNCTIONS

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

ACCESSORIES

Electrical

Coefficient of performance(C.O.P) ✽1

Fan

Special

SPECIFICATION

Outdoor model

Function

Power supply

Capacity Rated frequency(Min.-Max.) Dehumidification Air flow(High/Low)

Capacity

Power outlet Running current Power input Power factor Starting current ✽1

data

Compressor motor current ✽1 Fan motor current

Model

Output Winding

Compressor

resistance(at 20:) Model Winding

motor

resistance(at 20:) Dimensions WOHOD Weight Sound level(High/Low) Fan speed(High/Low) Fan speed regulator Refrigerant filling

remarks

capacity(R410A) Refrigeration oil(Model)

r/h

K /h

A W %

rpm

Cooling

5.0(0.9-5.9)

2,940/1,650

SNB130FLDH or SNB130FLDH1

WHT-RED 15.2 RED-BLK15.2

800/480

NOTE : Test conditions are based on ISO 5151.

Cooling : Indoor DB 27: WB 19:

Outdoor DB 35: WB (24:)

Heating : Indoor DB 20: WB 15: Refrigerant piping length (one way): 5m

✽1 Measured under rated operating frequency.

Outdoor DB 7: WB 6:

MUZ-GA50VA

Heating

Single phase

230V,50Hz

5.9(0.9-7.8)

2.5

6.23

1,410

98.4

7.46

5.93

0.30

3.42

U-V 0.45 W-U 0.45

V-W 0.45

RC0J60-AA

BLK-WHT 15.2

840o850o330

53/51

NEO22

2,940/2,210

850

800/620

1.8

—

7.01

1,580

98.0

6.71

3.62

55/53

Drain socket Drain cap [33

MUZ-GA60VA

Cooling

Single phase

230V,50Hz

6.0(0.9-6.7)

3.0

2,940/1,650

8.23

1,870

98.8

7.93

3.11

SNB130FLDH or SNB130FLDH1

SNB130FLEH1

SNB130FGBH

U-V 0.45 W-U 0.45

RC0J60-AA

BLK-WHT 15.2

WHT-RED 15.2 RED-BLK15.2

840o850o330

53/51

800/480

6.8(0.9-8.1)

2,940/2,210

8.93

0.30

850

V-W 0.45

1.8

NEO22

Heating

—

8.33

1,880

98.1

8.03

3.51

55/53

800/620

1 2

MUZ-GA71VA

11.2

0.30

1,300

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

Cooling

Single phase

230V,50Hz

7.1(0.9-8.3)

3.8

2,940/1,650

10.4

2,360

98.7

10.1

2.93

TNB220FMCH

U-V 1.41 W-U 1.41

V-W 1.41

RC0J60-AA

BLK-WHT 15.2

WHT-RED 15.2 RED-BLK15.2

840o850o330

53/51

800/480

Page 7

OUTDOOR UNIT

MICROPHONE

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

53 55

Test conditions Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:) Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:

Model

Item

Smoothing capacitor Current transformer Current transformer Fuse Fuse Fuse Intelligent power module High pressure switch Intelligent power module Reactor Expansion valve coil Power factor controller Resistor Resistor Resistor Solenoid coil relay Terminal block 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

560+ 450V ETQ19Z68AY ETQ19Z53AY

250V 2A

250V 3.15A

250V 1A

PS21661-RZ

ACB-DB156(for )

PS21244-A 340µH 20A

DC 12 V

PS51259-A

10" 10W

1.1" 2W 2%

0.04" 7W TLP3506

3P 3P

G4A

AC 220 ~ 240 V

ACB-DB156

–

Specifications and rating conditions of main electric parts

NOISE CRITERIA CURVES

MUZ-GA50VA MUZ-GA60VA

MUZ-GA71VA

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

Page 8

30-

35-

155

198

515

299

330

360

850

430

500

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) [12.7 (MUZ-GA50) [15.88 (MUZ-GA60/71)

Liquid refrigerant pipe joint Refrigerant pipe (flared) [6.35 (MUZ-GA50/60)

[9.52 (MUZ-GA71)

REQUIRED SPACE

OUTLINES AND DIMENSIONS

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

Unit: mm

Page 9

WIRING DIAGRAM

MUZ-GA50VA MUZ-GA60VA MUZ-GA60VA -

RED

CT2

PFC

E1 E2

CB3 CB2 CB1

IPM

WHT

BLK

CT1

RS3

RS4

CN3

RT64

POWER

BOARD

LD9

LD1LD2

GRN

WHT RED

GRY

ORN

PNK

CN801

YLW

BLU

CN931

RED

R937A

BLK

WHT

23134512

CN932

HC930

R937B

diagram for servicing.

refer to the indoor unit electric wiring

1.About the indoor side electric wiringNOTES:

:Terminal block :Connector

3.Symbols below indicate.

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

RS1

RS2

F801

BLK

CN5

CN4

CN2

6543 1

BLK

CN701

T801

NAME

RED

3X64

R64B

R64A

F64

TAB1

BRN

TB1

CIRCUIT

BREAKER

POWER SUPPLY

~/N 230V 50Hz

YLW

TAB4

BLU

BLK

NR64

CT61

TAB2

BLK

CN903

SSR61

F911

5123

CN902

CN901

LDE2

LDE1

CN61

GRN/YLW

NOISE

FILTER

BLU BLU

CN912

GRN

P.C.BOARD

TO INDOOR

BLK BLK BLK

BLK

1567

5321

BLK

BLK BLK BLK

21S4

ELECTRONIC

WHT

BLU WHT

TB2

230V~

UNIT

CONNECTING

CN702

CN661

CN781

CN663

CONTROL

P.C.BOARD

CN601

BLU

12-24V

CN7954123 78

RED

LEV

TRANSFORMER

TERMINAL BLOCK

SOLENOID COIL RELAY

AMBIENT TEMPERATURE THERMISTOR

FIN TEMPERATURE THERMISTOR

OUTDOOR HEAT EXCHANGER

TEMPERATURE THERMISTOR

T801

RT68

RT64

RT65

SYMBOL

SSR61

TB1

TB2

R.V. COIL

RELAY

X64

21S4

RT61 RT62 RT68

NAME

RT65

COMPRESSOR

VARISTOR

OUTDOOR FAN MOTOR

NOISE FILTER

POWER FACTOR CONTROLLER

SYMBOL

NAME

PFC

NR64

DEFROST THERMISTOR

DISCHARGE TEMPERATURE THERMISTOR

RESISTOR

RT62

RT61

RS1~4

R64A,B

R937A, B

CURRENT TRANSFORMER

FUSE (T2AL 250V)

CURRENT TRANSFORMER

SMOOTHING CAPACITOR

CT1, 2

CB1~3

SYMBOL

FUSE (T1AL 250V)

INTELLIGENT POWER MODULE

FUSE (T3.15AL 250V)

F64

CT61

F911

F801

IPM

HC930

EXPANSION VALVE COIL

REACTOR

LEV

Page 10

MUZ-GA60VA -

Page 11

MUZ-GA71VA

BLK

CN902

CN903

TAB4

X64 3

R64A R64B

RED

YLW

RED

230V~

12-24V

CN912

CN663

WHT

BLU

NOISE

FILTER

P.C.BOARD

BRN

TO INDOOR

UNIT

CONNECTING

RED

RT65

CN61

GRN/YLW

PFC

GRN

LD9

POWER

BOARD

RT64

CN3

HPS

RED

WHT

RS2

RS1 RS3

RS4

F801

CN901

NR64

CN681

ELECTRONIC

CONTROL

P.C.BOARD

CB1

CB2

CB3

HC930

IPM

BLK

WHT

RED

YLW

BLU

ORN

PNK

GRY

BLU

WHT

GRN

BLU BLU

BLK

BLK BLK

BLK

RED

BLU

CT2

CT1

SSR61

CN7954123 78

CN661

CN4

TB2

CN601

1567

CN702

5321

CN781

CN701

CN931

LD1LD2

T801

R937A

R937B

CN801

23134512

CN932

5123

LDE2

CT61

TAB1

F64

F911

LDE1

21S4

POWER SUPPLY

~/N 230V 50Hz

TAB2

TB1

CIRCUIT

BREAKER

CN5

6543 1

CN2

WHT

RT61RT62 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

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

COMPRESSOR

R64A,B RESISTOR

PFC

NR64

VARISTOR

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

Page 12

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube [3.6✕[2.4✕50

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe [12.7 (MUZ-GA50VA) (with heat insulator) [15.88 (MUZ-GA60VA)

Refrigerant pipe [6.35 (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

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube [3.6✕[2.4✕50

Capillary tube [1.8✕[0.6✕1000

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe [6.35 (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 [15.88 (with heat insulator)

REFRIGERANT SYSTEM DIAGRAM

MUZ-GA50VA MUZ-GA60VA -

Unit:mm

MUZ-GA60VA -

Unit:mm

Page 13

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube [3.6✕[2.4✕50

Capillary tube [1.8✕[0.6✕1000

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe [15.88 (with heat insulator)

Refrigerant pipe [9.52 (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 -

Outdoor heat exchanger

Flared connection

Defrost thermistor RT61

Discharge temperature thermistor RT62

Flared connection

Stop valve

Stop valve (with service port)

Capillary tube [3.6✕[2.4✕50

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe [15.88 (with heat insulator)

Refrigerant pipe [6.35 (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

Unit:mm

MUZ-GA71VA

Unit:mm

Page 14

Refrigerant Piping Max. length A

Max. Height difference B

Indoor unit

Outdoor unit

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Model

Piping size O.D : mm

Refrigerant piping : m

Max. length

Max. Height

difference

1530

Gas

12.7

15.88

Liquid

6.35

9.52

MUZ-GA50VA

MUZ-GA60VA MUZ-GA71VA

Model

MUZ-GA50VA MUZ-GA60VA

Refrigerant piping length (one way)

Outdoor unit

precharged

1,800

15m

160

20m

260

25m

360

30m

460

10m

Outdoor unit

precharged

2,000

0 165 440 715 990 1,265

Refrigerant piping length (one way)

15m10m7m

Model

MUZ-GA71VA

20m

25m 30m

ADDITIONAL REFRIGERANT CHARGE(R410A : g)

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

Calculation : Xg=20g/m ✕ (Refrigerant piping length (m)–7)

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

Page 15

PERFORMANCE CURVES8

8.7

8.0

7.3

6.6

5.9

5.3

MSZ-GA60VA

MUZ-GA60VA

at Rated frequency

Indoor air Wet-bulb temperature

difference (degree)

MSZ-GA50VA

MUZ-GA50VA

8.7

8.0

7.3

6.6

5.9

5.3

at Rated frequency

MSZ-GA71VA

MUZ-GA71VA

at Rated frequency

Outdoor intake air Dry-bulb temperature (:)

10.7

9.8

8.9

8.0

7.2

6.4

Indoor intake air W

et-bulb tem

perature (

Indoor intake air Wet-bulb temperature (

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

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 ~ 264V, 50Hz

(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/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/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.

How to measure the indoor air wet-bulb / 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.

}

Cooling

Heating

8-1. CAPACITY AND INPUT CURVES

INDOOR UNIT

Wet and dry-bulb thermometers

OUTDOOR UNIT

Wet and dry-bulb thermometers

Page 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 tem

perature (

Outdoor intake air Wet-bulb temperature (:)

Indoor intake air Dry-bulb temperature (:)

MSZ-GA50VA

MUZ-GA50VA

at Rated frequency

MSZ-GA60VA

MUZ-GA60VA

at Rated frequency

MSZ-GA71VA

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.

Page 17

(MPa [Gauge])

(kgf/F [Gauge])

18 32

15 2050256030

70 (%)

35(˚C)

0.3

0.4

0.5

0.6

0.7

0.8

0.9

Ambient temperature(˚C) Ambient humidity(%)

Outdoor low pressure

15 2050256030

70 (%)

35(˚C)

Outdoor unit current(A)

Ambient temperature(˚C) Ambient humidity(%)

MUZ-GA50VA

0.3

0.4

0.5

0.6

0.7

0.8

0.9

MUZ-GA71VA

15 205025

30 70 (%)

35(˚C)

Outdoor unit current(A)

Ambient temperature(˚C) Ambient humidity(%)

MUZ-GA71VA

(MPa [Gauge])

(kgf/F [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

0.9

(MPa [Gauge])

(kgf/F [Gauge])

18 32

15 2050256030

70 (%)

35(˚C)

15 205025

30 70 (%)

35(˚C)

Ambient temperature(˚C) Ambient humidity(%)

Outdoor low pressure

Outdoor unit current(A)

Ambient temperature(˚C) Ambient humidity(%)

MUZ-GA60VA

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

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.

8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

COOL operation

1 Both indoor and outdoor unit are under the

same temperature/humidity condition.

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

Dry-bulb temperature(:)

20 50 25 60

Relative humidity(%)

30 70

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/ff[Gauge])

Page 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(:)

16.0

15.0

14.0

13.0

12.0

11.0

10.0 2 5 10 15 20 25(:)

12.0

11.0

10.0

9.0

8.0

7.0

6.0 2 5 10 15 20 25(:)

HEAT operation

Dry bulb temperature (°C)

Indoor

20.0

14.521

Outdoor

76151220.0

14.5

Wet bulb temperature (°C)

1 Condition :

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

Page 19

INDOOR INDOOR

CAPACITY:5.0(kW)

INPUT:1460(W)SHF:0.65

OUTDOOR DB(:)

25 27 30

WB(:)

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

DB(:)

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

MSZ-GA50VA : MUZ-GA50VA

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

Page 20

INDOOR INDOOR

CAPACITY:5.0(kW)

INPUT:1460(W)SHF:0.65

OUTDOOR DB(:)

40 43 46

WB(:)

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

DB(:)

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

MSZ-GA50VA : MUZ-GA50VA

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

Page 21

PERFORMANCE DATA COOL operation at Rated frequency

INDOOR INDOOR

CAPACITY:6.0(kW)

INPUT:1930(W)SHF:0.64

OUTDOOR DB(:)

25 27 30

WB(:)

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

DB(:)

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

MSZ-GA60VA : MUZ-GA60VA

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

Page 22

INDOOR INDOOR

CAPACITY:6.0(kW)

INPUT:1930(W)SHF:0.64

OUTDOOR DB(:)

40 43 46

WB(:)

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

DB(:)

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

MSZ-GA60VA : MUZ-GA60VA

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

Page 23

PERFORMANCE DATA COOL operation at Rated frequency

MSZ-GA71VA : MUZ-GA71VA

CAPACITY:7.1(kW)

INDOOR INDOOR

DB(:)

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

WB(:)

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

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

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

INPUT:2420(W)SHF:0.63

OUTDOOR DB(:)

25 27 30

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

Page 24

INDOOR INDOOR

CAPACITY:7.1(kW)

INPUT:2420(W)SHF:0.63

OUTDOOR DB(:)

40 43 46

WB(:)

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

DB(:)

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

MSZ-GA71VA : MUZ-GA71VA

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

Page 25

PERFORMANCE DATA HEAT operation at Rated frequency

CAPACITY:5.9(kW)

INPUT:1630(W)

OUTDOOR WB(:)

INDOOR

-10 -5 0 5 10 15 20

DB(:)

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

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

CAPACITY:6.8(kW)

INPUT:1940(W)

OUTDOOR WB(:)

INDOOR

-10 -5 0 5 10 15 20

DB(:)

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

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

CAPACITY:8.1(kW)

INPUT:2450(W)

OUTDOOR WB(:)

INDOOR

-10 -5 0 5 10 15 20

DB(:)

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

MSZ-GA50VA : MUZ-GA50VA

MSZ-GA60VA : MUZ-GA60VA

MSZ-GA71VA : MUZ-GA71VA

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

Page 26

OFF

Outdoor fan

Compressor

5 seconds 15 seconds

ON OFF

Compressor

Outdoor fan motor

R.V.coil

ON OFF

<COOL>

5 seconds

<HEAT>

5 seconds

ON or OFF

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 Protection Protection

Compressor LEV

Outdoor fan motor

R.V. coil

Sensor

Actuator

ACTUATOR CONTROL

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

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.

9-2. R.V. COIL CONTROL

Heating

Cooling

Dry

NOTE: The 4-way valve reverses for 5 seconds right before start-up of the compressor.

. . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . .

ON OFF OFF

9-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR

Relation between main sensor and actuator.

Page 27

Housing point

SERVICE FUNCTIONS

Contents of “SERVICE FUNCTIONS” have been removed.

TROUBLESHOOTING

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

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 mis-wiring.

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, then 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.

Lead wiring

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 abnormality indication is flashing on and off before starting service work.

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

3) If 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.

Page 28

11-2. FAILURE MODE RECALL FUNCTION

Operational procedure

Yes

(Blinks)

(OFF)

Yes

Releasing the failure mode recall function

NOTE1.Make sure to release the failure mode recall function once it's 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.

W2. Blinking pattern when the indoor unit is abnormal:

W3.Blinking pattern when the outdoor unit is abnormal:

OFF

Beeps

Repeated cycle Repeated cycle

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. W2

The cause of abnormality cannot be found because the abnormality doesn't 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 abnormal.

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. W2

Turn ON the power supply. <

Preparation of the remote controller

1 While pressing both OPERATION SELECT

button and TOO COOL button on the remote controller at the same time, press RESET button.

2 First, release RESET button.

And release the other two buttons after all LCD except the set temperature in operation display section of the remote controller is displayed after 3 seconds.

Deleting the memorized abnormal condition

1After repairing the unit, recall the failure mode again according to

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

2Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature is displayed)

with the remote controller headed towards the indoor unit.

3Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted. 4Release 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. W1

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. W3

W1. Regardless of normal or abnormal condition, a short beep is emitted once the signal is received.

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 doesn't recur.

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

Page 29

Operational procedure

NOTE1. Make sure to release the failure mode recall function once it's 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. W2.Blinking pattern when outdoor unit is abnormal:

Yes

(Blinks)

(OFF)

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 0.5second interval

Repeated cycle

W1. 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: The outdoor unit is abnormal. Beep is emitted at the same timing as the blinking of the left lamp of OPERATION INDICATOR lamp. W2

Deleting the memorized abnormal condition

1After repairing the unit, recall the failure mode again according to

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

2Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature is displayed)

with the remote controller headed towards the indoor unit.

3Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted. 4Release 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:. W1

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. W2

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.

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

Page 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.E

"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.D "Check

of LEV".

• Refer to 11-6.G "Check

of outdoor fan motor".

• Replace the outdoor

electronic control P.C. board.

•Check refrigerant circuit

and refrigerant amount.

• Refer to 11-6.D "Check

of LEV".

• Reconnect compressor

connector.

• Refer to 11-6.E "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.G "Check

of outdoor fan motor".

• Refer to 11-6.F "Check

of outdoor thermistors".

• Refer to 11-6.F "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:during cooling or the indoor gas pipe temperature exceeds 70: during heating.

The fin temperature exceeds 87: during operation.

The P.C. board temperature exceeds 70: 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: 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

Correspondence

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: or less 3 minutes later.

The left lamp of

OPERATION INDICAOR

lamp(Indoor unit)

Page 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.

• Replace the power 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) wEven 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

Correspondence

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.).

Page 32

11-3. INSTRUCTION OF TROUBLESHOOTING

Start

Indoor unit operates. Outdoor unit doesn't operate.

Indoor unit doesn't 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 doesn't operate even in Test Run operation. (Refer to 8-3.)

Indoor unit operates, when EMERGENCY OPERATION switch is pressed.

Indoor unit doesn't operate, when EMERGENCY OPERATION switch is pressed.

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

Refer to 11-6.E "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 doesn't operate normal operation in COOL or HEAT mode.

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

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.E "How to check inverter/ compressor".

Refer to 11-6.F "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 doesn't operate normally.

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

Page 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.E "How to check inverter/compressor".

• Check the stop valve.

Lightning 3 times

Discharge temperature thermistor

• Refer to 11-6.F "Check of outdoor thirmistor".

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 Correspondence

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.F "Check of outdoor thirmistor".

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

Indication

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)

Lighting

IPM protection

Lock protection

3 times Goes out

Discharge temperature protection

• Check the amount of gas and refrigerant circuit.

• Refer to 11-6.D "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)

• Replace the power board.

Bus-bar voltage protection (2)

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

• Check the amount of gas and the refrigerant circuit.

• Check stop valve.

• Reconnect compressor connector.

• Refer to 11-6.E "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 minutes of compressor start-up.

Overcurrent is detected within 30 minutes 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:during operation and compressor stops. Compressor can restart if discharge temperature thermistor reads 100: or less 3 minutes later.

The fin temperature exceeds 87: during operation.

The P.C. board temperature exceeds 70: 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: during cooling or indoor gas pipe temperature exceeds 70: during heating.

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

Outdoor unit does not operate.

LED2

LED1

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

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

No.

Symptom

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

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

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

2. LED is lighted during normal operation.

2.5-second OFF

OFF

0.5-second ON

2.5-second OFF

0.5-second ON

Page 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.D "Check of LEV".

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

4 times

Lighting

Low discharge temperature protection

• Refer to 11-6.D "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: during operation.

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

The outdoor heat exchanger temperature exceeds 58: 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: during heating.

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

LED1(Red) LED2(Yellow)

Abnormal point / Condition Correspondence

Indication

Condition

Outdoor unit operates.

Outdoor unit operates

No.

Symptom

Page 35

11-5. TROUBLE CRITERION OF MAIN PARTS

WHT

RED

BLK

LEV

WHT RED

YLW

BRN

ORN

BLU

RED

WHT

BLK

(W)

(V)

(U)

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

Part name FigureCheck method and criterion

Defrost thermistor (RT61)

Ambient temperature thermistor (RT65)

Outdoor heat exchanger temperature thermistor (RT68)

Discharge temperature thermistor (RT62)

Fin temperature thermistor (RT64)

Compressor

Outdoor fan motor

Measure the resistance with a tester. Refer to 11-7. “Test point diagram and voltage”,1. “Outdoor electronic

control P.C. board”, the chart of thermistor.

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”, the chart of thermistor.

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

Normal

GA50/60VA

0.40 Ω ~ 0.49 Ω

GA60VA

0.86 Ω ~ 1.06 Ω

GA71VA

1.29 Ω ~ 1.49 Ω

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

Color of lead wire

Normal

RED - BLK

BLK - WHT

13.4 Ω ~ 16.4 Ω

WHT - RED

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

R. V. coil

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

Linear expansion valve

High pressure switch (HPS)

MUZ-GA60VA

MUZ-GA71VA

MUZ-GA60VA-

1.32 kΩ ~ 1.62 kΩ

Color of lead wire

WHT - RED

RED - ORN YLW - BRN

BRN - BLU

Normal

Pressure

3.7 ± 0.15 MPa

0.05

4.8 MPa

0.1

Other models

2.6 kΩ ~ 3.3 kΩ

Normal

37.4 Ω ~ 53.9 Ω

Close Open

Page 36

11-6. TROUBLESHOOTING FLOW

Turn ON power supply.

Yes

Replace the power board.

Check the connecting of parts of main power supply circuit.

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

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

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

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 230V AC?

Replace the fuse.

Replace the reactor.

Outdoor unit does not operate.

Check of power supply

Page 37

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

Is there rated voltage in the power supply?

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

W1. 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. W3.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)

Yes

W2 Be careful to the residual voltage of smoothing capacitor.

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

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.

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. W1

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. W2

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?

Replace the indoor/outdoor connecting wire.

Is serial signal error indicated 6 minutes later?

Yes

· Turn OFF inverter-controlled lighting equipment.

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

· Press EMERGENCY OPERATION switch.

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

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

Is serial signal error indicated 6 minutes later?

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"?

Outdoor electronic control P.C. board

(Parts side)

LED2

LED1

Indoor unit does not operate.

• When OPERATION INDICATOR lamp flashes ON and OFF every 0.5-second. Outdoor unit doesn’t operate.

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

Page 38

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 230V AC between pin1 and pin 2 at connector CN912? W

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 12V DC 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 230V AC between pin1 and pin 2 at connector CN912? W

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 12V DC between the connector CN781 pin 5 (+) and pin 3 (-)?

Replace the outdoor electronic control P.C. board.

W 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.

Check of R.V. coil

Page 39

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

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

Check of LEV

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?

Replace the LEV coil.

Yes

Normal

Yes

Replace the outdoor electronic control P.C. board.

When OPERATION INDICATOR lamp flashes 5-time.

• When heating, room does not get warm.

• When cooling, room does not get cool.

How to check inverter/ compressor

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

EMERGENCY OPERATION.

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

Yes

Is output balanced?

Yes

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

Yes

measuring the voltage.

•The output voltage values have the tolerance of i20%.

Replace the power board.

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?

Yes

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

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

Replace the compressor.

Page 40

• When OPERATION INDICATOR lamp flashes 6-time.

Yes

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

W When RT64 is abnormal, replace the

outdoor power

board.

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

(Fixed to either 5V or 0V DC)

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 1(+) and 5(-) Between 2(+) and 5(-) Between 3(+) and 5(-)

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 5V DC and 0V DC repeatedly?

Replace the outdoor DC fan motor.

Replace the outdoor electronic control P.C. board.

• When thermistor is abnormal.

Check of outdoor thermistors

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

Check of outdoor fan motor

Page 41

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

Check of HPS

MUZ-GA60VA MUZ-GA71VA

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?

Normal

Infinity

Yes

Replace the electronic control P.C. board.

Replace HPS.

Page 42

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

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.

Electromagnetic noise enters into TV sets or radios

Page 43

11-7. TEST POINT DIAGRAM AND VOLTAGE

-20-100 10203040

100

90 80 70 60 50 40 30 20 10

0 1020304050607080

200 180 160 140 120 100

80 60 40 20

Resistance (k')

Temperature (;)

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

Resistance (k')

Temperature (;)

Discharge temperature thermistor (RT62)

1. Outdoor electronic control P.C. board

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

CN661

(

CN663

To fan

motor

(

CN932

20-90V AC

(

5V DC

pulse wave

(

CN931

Defrost thermistor (RT61)

Discharge temperature

thermistor (RT62)

(

GND

Outdoor heat exchanger

temperature thermistor (RT68)

(

CN701

Signal transmission

(–)

Ambient temperature

thermistor (RT65)

(

(From power board)

CN702

Signal reception

(

(To power board)

5V DC pulse wave

(+)

(–)

GND

12V

(

CN781

5V DC pulse wave

(+)

Rush current relay

15V

GND (power board)

(–)R.V. coil

(–)

(+)

(

LEV

(

CN795

12V DC

(–)

(

pulse wave

LED 1 LED 2

CN801

325V DC

370V DC

Input

F801

FUSE

250V 3.15A

(

CN681 High pressure switch

MUZ-GA60VAMUZ-GA71VA

CN601

(

230V AC Input

(

Serial signal Room A

5~10V DC

Page 44

2. Noise filter P.C. board

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

CN901 To electronic control P.C. board

{

CN912 R.V. coil 230V AC

230V AC Output

{

CN902 To power board

CN903 To power board

{

230V AC Input

{

230V AC Output

NR64 VARISTOR

F64 FUSE 250V 2A

F911 FUSE 250V 1A

Page 45

3. Outdoor power board

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

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

325-370V DC Output

(+)

(–)

(Red)

3 (White)

Connect to the earth

CN2 Connect to the controller board (+)1-5(–): Signal transmission (To electronic control P.C. board)

(+)2-5(–): Zero cross signal (+)6-5(–): 15V

(+)7-5(–): 15V CN3

Fin temperature thermistor RT64 Signal reception (From

)

electronic control P.C. board) 5V DC pulse wave

CN5 Primary current detection (Connect to the noise filter)

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

5V DC pulse wave

3-4 : Not used

325-370V DC Output

(+)

(–)

(Red)

3 (White)

Connect to the earth

CN2 Connect to the controller board (+)1-5(–): Signal transmission (To electronic control P.C. board)

(+)2-5(–): Zero cross signal (+)6-5(–): 15V

(+)7-5(–): 15V

CN3 Fin temperature thermistor RT64

Signal reception (From

)

electronic control P.C. board) 5V DC pulse wave

CN5 Primary current detection (Connect to the noise filter)

5V DC pulse wave

3-4 : Not used

Page 46

(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the

locking mechanism.

1Slide the sleeve. 2Pull the terminal while

pushing the locking lever.

1Hold the sleeve, and pull out the terminal slowly.

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.

<"Terminal with locking mechanism" Detaching points>

Connector

Sleeve

Locking lever

DISASSEMBLY INSTRUCTIONS

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA

OPERATING PROCEDURE PHOTOS

NOTE :

These photos are MUZ-GA71VA. Other models are almost the same as MUZ-GA71VA.

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 3

Screw of the motor support

Screws of the back panel

Photo 1

Screws of the cabinet

Photo 2

Screws of the cabinet

Screw of the top panel

Screws of the cabinet

Screw of the service panel

Screws of the top panel

Set screws of the back panel

Screw of the valve cover

Page 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- , 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

Screws of the power board assembly

Screws of the relay panel

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)

Page 48

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. (Photo 6) (5) Pull out the discharge temperature thermistor from its

holder. (Photo 5)

(6) Pull out the outdoor heat exchanger temperature thermistor

from its holder. (Photo 6)

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

(Photo 6)

Photo 5

Discharge temperature thermistor

Photo 6

Outdoor heat exchanger temperature thermistor

Ambient temperature thermistor

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;

CN931 and CN932 (Fan motor) (4) Remove the propeller. (5) Remove the screws fixing the fan motor. (6) Remove the fan motor.

Defrost thermistor

Photo 7

Screws of the outdoor fan motor

Propeller

Page 49

OPERATING PROCEDURE

PHOTOS

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/cm

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

pipe connected with compressor. (Photo 9) (6) Remove the compressor nuts.

(7) Remove the compressor.

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

(0 MPa).

Photo 8

Welded parts of 4-way valve

Photo 9

R.V. coil

Welded part of the discharge 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.

Welded part of the suction pipe

Photo 10

Screws of the reactor

Page 50

PARTS LIST (non-RoHS compliant)

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

FUNCTIONAL PARTS

27 26

293031

2 3 4

6 7

23 22

1310 12

Page 51

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

No.

Part Name

MUZ-GA50 VA -

MUZ-GA60 VA -

MUZ-GA71 VA -

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 127 382 E02 737 382 E02 935 385 E02 851 936 E02 853 936 E02 861 936

1 2

3 4

5 6

7 8 9

14 15

16 17 18 19 20

22 23 24 25 26 27 28 29 30 31 32 33 34

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 FUSE FUSE FUSE & VARISTOR CAPILLARY TUBE(TAPER PIPE) CAPILLARY TUBE(TAPER PIPE) CAPILLARY TUBE

RC0J60-

3RUBBERS/SET 3RUBBERS/SET SNB130FLDH1 TNB220FMCH

{12.7 {15.88 {6.35 {9.52

3P 3P

Including heat sink and RT64

T3.15AL250V T1AL250V T2AL250V

{3.6x{2.4x50 {3.6x{2.4x50 {1.8x{0.6x1000

HPS

MC MC

LEV

21S4

TB1 TB2

RT65

RT61,RT62,RT68

F801 F911

F64,NR64

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

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 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

PARTS LIST (non-RoHS compliant)

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

FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

Page 52

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

No.

Part Name

MUZ-GA50 VA -

MUZ-GA60 VA -

MUZ-GA71 VA -

E02 817 704 E02 444 705

1 2

DRAIN SOCKET DRAIN CAP

[33

1 2

PARTS LIST (non-RoHS compliant)

MUZ-GA50VA MUZ-GA60VA MUZ-GA71VA 13-2. ACCESSORY

Page 53

Page 54

RoHS PARTS LIST (RoHS compliant)

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

FUNCTIONAL PARTS

27 26

293031

2 3 4

6 7

23 22

1310 12

Page 55

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

RoHS

No.

Part Name

MUZ-GA50 VA -

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 819 521 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 127 382 E12 737 382 E12 935 385 E12 851 936 E12 853 936 E12 861 936

1 2

3 4

5 6

7 8 9

14 15

16 17

18 19

22 23 24 25 26 27

28 29

30 31 32 33 34

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 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 FUSE FUSE FUSE & VARISTOR CAPILLARY TUBE(TAPER PIPE) CAPILLARY TUBE(TAPER PIPE) CAPILLARY TUBE

RC0J60-

3RUBBERS/SET 3RUBBERS/SET SNB130FLDH1 SNB130FLEH1 SNB130FGBH TNB220FMCH

{12.7 {15.88 {6.35 {9.52

3P 3P

Including heat sink and RT64 Including heat sink and RT64

T3.15AL250V T1AL250V T2AL250V

{3.6x{2.4x50 {3.6x{2.4x50 {1.8x{0.6x1000

HPS

MC MC MC MC

LEV

21S4 21S4

TB1 TB2

RT65

RT61,RT62,RT68

F801 F911

F64,NR64

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 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 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

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 1

RoHS PARTS LIST (RoHS compliant)

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

FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

Page 56

Symbol

in Wiring

Diagram

Q'ty/unit

Remarks

Part No.

No.

RoHS

Part Name

MUZ-GA50 VA -

MUZ-GA60 VA -

MUZ-GA71 VA -

E12 817 704 E12 444 705

12G

DRAIN SOCKET DRAIN CAP

[33

1 2

121

E1 E2 E1 E2

1 2

RoHS PARTS LIST (RoHS compliant)

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

Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD 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

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

New publication, effective Sep. 2007 Specifications subject to change without notice.

Mitsubishi Electric MUZ-GA50VA, MUZ-GA60VA, MUZ-GA71VA Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual