Mitsubishi Electric MUZ-A09YV-E1 Manuel utilisateur

SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················5

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

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

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

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

7. REFRIGERANT SYSTEM DIAGRAM··············11

8. PERFORMANCE CURVES······························12

9. ACTUATOR CONTROL····································21

10. SERVICE FUNCTIONS·····································22

11. TROUBLESHOOTING······································22

12. DISASSEMBLY INSTRUCTIONS·····················34

13. PARTS LIST······················································38

Wireless type

Models

No. OB328

REVISED EDITION-A

SPLIT-TYPE, HEAT PUMPAIR CONDITIONERS

MUZ-A09YV -

MUZ-A12YV -

MUZ-A09YVH -

MUZ-A12YVH - E1

MUZ-A09YV -

MUZ-A12YV -

MUZ-A09YVH -

MUZ-A12YVH - E1

Indication of

model name

NOTE:

This service manual describes technical data of the outdoor units.

•As for indoor units MSZ-A09YV- and MSZ-A12YV- , refer to the service manual OB327.

•As for indoor unit MCFZ-A12WV- , refer to the service manual OB344.

E1E1

HFC

utilized

R410A

Revision A:

●MUZ-A12YV- and MUZ-A12YVH-

can be connected to MCFZ-A12WV- .

●Some mistakes were corrected. E1

E1E1

Please void OB328.

OB328 A--1qxp 04.4.26 4:49 PM Page 1

Mitsubishi Electric ilmalämpöpumput korjaa ja huoltaa pääkaupunkiseudulla: Jäähdytinpalvelu RefGroup Oy

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1TECHNICAL CHANGES

Refrigerating

oil

Refrigerant

New refrigerant

R410A

HFC-32: HFC-125 (50%:50%)

Pseudo-azeotropic refrigerant

Not included

A1/A1

72.6

-51.4

1.557

Non combustible

1730

From liquid phase in cylinder

Possible

Incompatible oil

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 Destruction Parameter : based on CFC-11

w2 :Global Warmth Parameter : based on CO2

INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT

• This room air conditioner adopts an 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.

1As 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.

2Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and

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

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

piping.)

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

composition change.

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])

New Specification Current Specification

The incompatible refrigerating 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

refrigerating oil of the upper layer to flow back to the

compressor.

Since refrigerant and refrigerating oil are compatible each,

refrigerating oil backs to the compressor through the lower

position oil back hole.

Compressor

Suction muffler

Oil back hole

Refrigerating oil

Refrigerant

Compressor

Suction muffler

Oil back hole

Refrigerating oil /Refrigerant

Compressor

Revision A:

•MUZ-A12YV- and MUZ-A12YVH- can be connected to MCFZ-A12WV- .

•Some mistakes were corrected. E1E1E1

OB328 A--1qxp 04.4.26 4:49 PM Page 2

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-30 -20 -10 0 10 20 30 40 50 60

-0.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

(MPa [Gauge])

R410A

R22

Conversion chart of refrigerant temperature and pressure

Saturated liquid pressure

(:)

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

international system of units(SI unit system).

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

R410A tools Can R22 tools be used?

Gas leak detector

R410A has high pressures beyond the measurement range of existing

gauges. Port diameters have been changed to prevent any other refrigerant

from being charged into the unit.

Hose material and cap size have been changed to improve the pressure

resistance.

Dedicated for HFC refrigerant.

6.35 mm and 9.52 mm

Description

Clamp bar hole has been enlarged to reinforce the spring strength in the tool.

Provided for flaring work (to be used with R22 flare tool).

Provided to prevent the back flow of oil. This adapter enables you to use

vacuum pumps.

It is difficult to measure R410Awith 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

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.

2.Refrigerant piping

1Specifications

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. Never use any pipe with a thickness less

than 0.8mm, as the pressure resistance is insufficient.

Wall

thickness

Outside diameter

Pipe mm

For liquid

For gas

6.35

9.52

12.7

0.8 mm

Heat resisting foam plastic

Specific gravity 0.045 Thickness 8 mm

Insulation material

OB328 A--1qxp 04.4.26 4:49 PM Page 3

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Electronic scale for refrigerant charging

Outdoor unit

Refrigerant gas

cylinder

operating valve

Refrigerant gas cylinder

for R410A with siphon

Refrigerant (liquid)

Service port

Gauge manifold

valve (for R410A)

Union

Liquid pipe

Gas pipe

Stop valve

Indoor unit

Charge hose (for R410A)

R410A

Pipe diameter

6.35

9.52

12.7

Dimension of flare nut

R22

2Flaring work and flare nut

Flaring work for R410A pipe differs from that for R22 pipe.

For details of flaring work, refer to Installation manual “FLARING WORK”.

3.Refrigerant 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, ability of the refrigerating 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.

OB328 A--1qxp 04.4.26 4:49 PM Page 4

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PART NAMES AND FUNCTIONS

OUTDOOR UNIT

Air inlet

Air outlet

Drain outlet

Piping

Drain hose

(back and side)

ACCESSORIES

1Drain socket 1

MUZ-A09YV - E1

MUZ-A12YV - E1

OUTDOOR UNIT

Single phase

230V,50Hz

1900

3.90

0.24

KNB073FBVH

550

U-V 1.53 U-W 1.53

V-W 1.53

RA6V21-AA

WHT-BLK 347

BLK-RED 281

800o550o285

825

0.80

320 (NEO22)

32.6

13.4

Cooling

2.5 (0.9-3.2)

1.4

2.89

3.73

Heating

3.2 (0.9-5.0)

—

3.49

3.81

MUZ-A09YV - E1

MUZ-A09YVH -

MSZ-A09YV -

Indoor model E1

MSZ-A12YV -

Indoor model

Single phase

230V,50Hz

1900

5.00

4.57

0.24

KNB092FAAH

650

U-V 0.49 U-W 0.49

V-W 0.49

RA6V21-AA

WHT-BLK 347

BLK-RED 281

800o550o285

825

0.90

320 (NEO22)

32.6

13.4

Cooling

3.5 (1.0-4.1)

2.0

3.21

Heating

4.0 (0.9-6.0)

—

3.70

Outdoor model

Function

Power supply

Capacity Rated frequency(Min.~Max.)

Dehumidification

Air flow

Starting current ✽1

Compressor motor current ✽1

Fan motor current

Model

Output

Winding

resistance(at 20:)

Model

Winding

resistance(at 20:)

Dimensions WOHOD

Weight

Sound level

Fan speed

Fan speed regulator

Refrigerant filling

capacity(R410A)

Refrigerating oil (Model)

Thermistor RT61

(at 0:)

Thermistor RT62(at 100:)

Thermistor RT64(at 50:)

Thermistor RT65(at 25:)

r/h

K/h

✽1

dB(A)

rpm

Compressor

Fan

motor

Special

remarks

Coefficient of performance(C.O.P)

Capacity

Electrical

data

MUZ-A12YV - E1

MUZ-A12YVH -

MCFZ-A12WV -

Indoor model

Single phase

230V,50Hz

1900

5.00

4.46

0.24

KNB092FAAH

650

U-V 0.49 U-W 0.49

V-W 0.49

RA6V21-AA

WHT-BLK 347

BLK-RED 281

800o550o285

825

0.90

320 (NEO22)

32.6

13.4

Cooling

3.5 (1.0-4.1)

2.0

3.21

Heating

3.9 (0.9-5.9)

—

3.61

MUZ-A12YV - E1

MUZ-A12YVH -

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:

Outdoor DB 7:WB 6:

Refrigerant piping length (one way): 5m

✽1 Measured under rated operating frequency

3SPECIFICATION

MUZ-A09YV - MUZ-A12YV -

MUZ-A09YVH - MUZ-A12YVH - E1E1

E1E1

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OUTDOOR UNIT

Model

Item

Current transformer

Smoothing capacitor

Outdoor fan capacitor

Diode module

Fuse

Defrost heater

Power transistor module

Expansion valve coil

Reactor

Current-detecting resistor

Current-limiting resistor

Solid state relay

Terminal block

Relay

R.V. coil

Heater protector

Outdoor fan motor thermal fuse

MUZ-A09YV - E1

(CT)

(CT761, CT781)

(

C62A, C62B, C61B

)

(C65)

(DB61, DB65)

(F61)

(F71, F801)

(H)

(IPM)

(LEV)

(L61)

(R61)

(R831)

(

R64A, R64B

)

(SR61)

(TB)

(X63)

(X64)

(X66)

(21S4)

(26H)

MUZ-A09YVH - E1 MUZ-A12YV - E1 MUZ-A12YVH - E1

ETQ19Z53AY

ETQ19Z71AY

680+ 420V

1.8+ 440V

D25XB60

250V 20A

250V 3.15A

PS21244A

CAD-MD12ME 12VDC

10A 23.0mH

25m"5W

5.1"10W

G3MB

G5N-1a/G5NB-1a

G4A-1A-PS

LD30013

Open 152:

—

230V 130W

G5N-1a/G5NB-1a

Open 45:

—

230V 130W

G5N-1a/G5NB-1a

Open 45:

45m"5W 50m"5W (2 elements)

Specifications and rating conditions of main electric parts

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NOISE CRITERIA CURVES

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,

Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

COOLING

FUNCTION SPL(dB(A)) LINE

High

SPEED

HEATING

Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:

MUZ-A09YV -

MUZ-A09YVH - E1

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

COOLING

FUNCTION SPL(dB(A)) LINE

High

FAN SPEED

HEATING

Test conditions,

Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)

Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:

OUTDOORUNIT

MICROPHONE

MUZ-A12YV -

MUZ-A12YVH - E1

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5OUTLINES AND DIMENSIONS

800

302.5

500 Bolt pitch for installation

150

22.3

Handle

550

280

164.5

99.5

170.5

23 Service panel

Service port

285

344.5

400

Air in

Air out

Air in

17.5

Bolt pitch for

installation

304~325

Liquid refrigerant pipe joint

Refrigerant pipe (flared) [6.35

Gas refrigerant pipe joint

Refrigerant pipe (flared) [9.52

43-

35-

2 holes 10o21

Drain hole [33 (MUZ-A09/A12YVH)

Drain hole [42 (MUZ-A09/A12YV)

REQUIRED SPACE Basically open 100mm or more

without any obstruction in front

and on both sides of the unit.

350mm or more

200mm or more

100mm or more

Open two sides of left,

right, or rear side.

Unit: mm

OUTDOOR UNIT

MUZ-A09YV - MUZ-A12YV -

MUZ-A09YVH - MUZ-A12YVH - E1E1

E1E1

OB328 A--1qxp 04.4.26 4:49 PM Page 8

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WIRING DIAGRAM

OUTDOOR UNIT

WHT

R64A

WHT

BLU

RED

INDOOR

UNIT

CONNEC-

TING

230V~

12V

GRN/YLW

R64B

R831

CN771 CN800

CN642

421

INVERTER P.C. BOARD

CN641

213

CN601

CN643

112

POWER P.C. BOARD

RT61RT62 RT64

RT65

GRN F71

LDE

NR61

TR821

DB65

LEV

IC801

SR61C65 1

CN721

X63

21S4

BLK

TAB62

X64

L62

TAB61

F61

DSA

L63

T801

BLK

BLU

C62A C62B

BLU

LD70

DB61

LD69

TAB63

BLK

L61

R61

CT761

CT781

IPM CN61

WMC

WHT

BLK

RED

BLK

WHT 1

LD-U

LD-W

LD-V

C61B F801

+++

SYMBOL

CT,CT761,CT781

C62A,C62B,C61B

C65

DB61,DB65

DSA

F61

F71,F801

IC801

IPM

SYMBOL

LEV

L61

L62,L63

NR61

RT61

RT62

RT64

SYMBOL

RT65

R61,R831

R64A,R64B

SR61

TR821

T801

X63,X64

21S4

NAME

CURRENT TRANSFORMER

SMOOTHING CAPACITOR

OUTDOOR FAN CAPACITOR

DIODE MODULE

SURGE ABSORBER

FUSE (20A)

FUSE (3.15A)

INTELLIGENT POWER DEVICE

POWER TRANSISTOR MODULE

NAME

EXPANSION VALVE COIL

REACTOR

CMC COIL

COMPRESSOR

OUTDOOR FAN MOTOR (INNER FUSE)

VARISTOR

DEFROST THERMISTOR

DISCHARGE TEMPERATURE THERMISTOR

FIN TEMPERATURE THERMISTOR

NAME

AMBIENT TEMPERATURE THERMISTOR

CURRENT-DETECTING RESISTOR

CURRENT-LIMITING RESISTOR

SOLID STATE RELAY

TERMINAL BLOCK

SWITCHING POWER TRANSISTOR

TRANSFORMER

RELAY

R.V. COIL

NOTE:1. About the indoor side electric wiring refer to

the indoor unit electric wiring diagram for

servicing.

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

3. Symbols below indicate.

/: Terminal block, : Connector

MODELS WIRING DIAGRAM

MUZ-A09YV -

MUZ-A12YV - E1

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OUTDOOR UNIT

MUZ-A09YVH -

MUZ-A12YVH - E1

WHT

R64A

WHT

BLU

RED

230V~

12V

GRN/YLW

R64B

26H

RED

BLK

BLK BLK

BLKBLK

YLW

BLU

BLK

GRN

TAB62

F71

CT 3

X64

L62

TAB61

LDE

F61

DSA

NR61

L63

T801

BLK

C62A C62B

TR821

LD70

DB61

DB65

LD69

TAB63

R831

BLK

L61

R61

6LEV

CT761

CT781

IPM CN61

WHT

BLK

RED

BLK

WHT 1

LD-U

LD-W

LD-V

C61B F801

IC801

CN722

1X66 SR61C65 1

CN721

X63

21S4

CN771 CN800

CN642

421

INVERTER P.C. BOARD

CN641

CN601

CN643

RT65 RT61RT62 RT64

SYMBOL

CT,CT761,CT781

C62A,C62B,C61B

C65

DB61,DB65

DSA

F61

F71,F801

IC801

IPM

SYMBOL

LEV

L61

L62,L63

NR61

RT61

RT62

RT64

RT65

SYMBOL

R61,R831

R64A,R64B

SR61

TR821

T801

X63,X64,X66

21S4

26H

NAME

CURRENT TRANSFORMER

SMOOTHING CAPACITOR

OUTDOOR FAN CAPACITOR

DIODE MODULE

SURGE ABSORBER

FUSE (20A)

FUSE (3.15A)

DEFROST HEATER

INTELLIGENT POWER DEVICE

POWER TRANSISTOR MODULE

NAME

EXPANSION VALVE COIL

REACTOR

CMC COIL

COMPRESSOR

OUTDOOR FAN MOTOR (INNER FUSE)

VARISTOR

DEFROST THERMISTOR

DISCHARGE TEMPERATURE THERMISTOR

FIN TEMPERATURE THERMISTOR

AMBIENT TEMPERATURE THERMISTOR

NAME

CURRENT-DETECTING RESISTOR

CURRENT-LIMITING RESISTOR

SOLID STATE RELAY

TERMINAL BLOCK

SWITCHING POWER TRANSISTOR

TRANSFORMER

RELAY

R.V. COIL

HEATER PROTECTOR

POWER P.C. BOARD

+++

INDOOR

UNIT

CONNEC-

TING

NOTE:1. About the indoor side electric wiring refer to

the indoor unit electric wiring diagram for

servicing.

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

3. Symbols below indicate.

/: Terminal block, : Connector

MODELS WIRING DIAGRAM

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Bosch Climate 5000 SCI 24 CAS/ OU- OUE Manuel utilisateur

Panasonic

Panasonic CS-E12HKEW Manuel utilisateur

nedis

nedis ACMB1WT7 Manuel utilisateur

Samsung

Samsung AR KV Series Mode d’emploi

Daikin

Daikin FCFV50A Manuel utilisateur

Fujitsu

Fujitsu Inverter ASBA30JFC Manuel utilisateur

Toshiba

Toshiba RAS-M10SMUV-E Manuel utilisateur

Daikin

Daikin FXLQ20MAVE Manuel utilisateur

Hitachi

Hitachi RAS-E24CAK Manuel utilisateur

CIAT

CIAT Magister 2 Series Mode d’emploi

Bestron

Bestron AAC6000 Manuel utilisateur

Hisense

Hisense 7K Manuel technique

Frigidaire

Frigidaire FFRE0533S1E0 Manuel utilisateur

Samsung

Samsung AS09HM3N Manuel utilisateur

Frigidaire

Frigidaire CRA073PU11 Manuel du propriétaire

Soleus Air

Soleus Air GB-PAC-08E4 Manuel utilisateur

McQuay

McQuay MCK020A Manuel utilisateur