Hitachi RAM-50CNHZ2 Скачать руководство пользователя страница 45

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NF-COIL1 COMMON MODE COIL

IN RUSH CURRENT RELAY

+5V

SERVICE-SW

NORMAL

COOL

CN4

CN3

VARISTOR2

VARISTOR3

L007

JW3

C011

JW5

C103

R003

BLU

C005

C004

C017

R009

R001

GRN 1

GRN 2

VARISTOR1

CT1

R002

POWER RELAY

YEL

C006

ABSORBER

SURGE

25A FUSE

BLK

WHT

TERMINAL

C001

C002

C003

R004

11
10

D104

R108

C105

RELAY COIL

IN RUSH CURRENT

9
8

12V

POWER RELAY COIL

D102

D103

C822

FM-0V

FM-15V

R702

FB1

D716

R722

REG1

R714

C722

R711

R712

C740

C716

C735

C734

D725
D708

C714

D709

R703

+5V

R723

R725

R718

C707

D710

+12V

R717

IC1

C724

C709

R701

D702

C732

D715

C733

R724

C731

C721

C723

SWITCHING TRANS

R726

R716

+17V

C718

D713

R713

D703

R708

R715

R710

REG2

PQ8

D707

C710

D706

D705

C708

-5V

C014

C013

C015

C016

GRN 3

L006

C008

C007

3A FUSE

R005

WHT

BLU

GRY

BLK

RED

BLK

WHT

RED

WHT

GRY

WHT

GRY

BLU

GRY

RED

WHT

S P M 2

YEL

REACTOR

CN13

17V

E F G H I

SPM2-CAPA

SVB

SVT

SUB

SUT

VCC

GL2

SWB

SWT

GL1

PGV

PGW

VCV

PGU

VCU

VCW

NGU

NGW

NGV

14 15 16

REF(5V)

ON/OFF

IDET

IFB

IIN

VDET

OUT

VCC

GND

SYNC

OVP

VFB

VIN

1 2 3 4 5

CN12

WHT

CN13

CN14

WHITE

RED

YELLOW

RED

GRY

D25VB60

WHT

BLK

RED

WHT

TERMINAL

INTERFACE RELAY 2

INDOOR 2

INTERFACE RELAY 1

CN1

C814
L804

C815

C813 C821

C820

C737

NF COIL 5

(2.7A)

ICP1

C803

INDOOR 1

BRN

RED

+12V

L803

C805

NF COIL 2

C806
C807

C804

L801

BLU

YEL

TERMINAL

+12V

NF COIL 4

C816
C817

L802

C736

NF COIL 3

PQ831

+5V

R833

R832

R831

Q831

REVERSING VALVE

CN2

D831

4 WAY VALUE

ELECTRIC

VALVE

2A
2B

VALVE THERMISTOR

ELECTRIC EXPANSION

+5V

POWER RELAY

SELF DIAGNOSIS 2

VALVE (INDOOR1)

ELECTRIC EXPANSION

R011

R010

C021

C020

JW2

C224

ÇR290

R293

R291

Q208

Q209

C222

C223

R295

R294

R292

ZD201

12V

CN10

R730

BRN

RED

WHT

BLK

S P S

(4)

(5)

(1)

(3)

(9)

(7)

CN8B

+5V

D204

+5V

R322

R321

R323

R324

R506

R505

R504

R503

R502

R501

R536

R526

R535

R525

R534

R533

R532

R531

R524

R523

R522

R521

Q506

Q504

Q502

Q505

Q503

Q501

R507

R508

R509

R510

R511

R512

C228

C808

C818

C202

C203

R297

R298

C227

+5V

+17V

10 11 12

17V

+5V

R802 Q801

R803

R801

C801

C802

+5V

R812 Q802

R813

R811

C811

C812

CN11

-5V

16
15
14
13
12
11
10

+12V

+5V

CN19

WHT

CN18

TEST PIN

2 WAY VALUE

49 50

Vcc
CHING

OPERATION RELAY
IN RUSH RELAY

SELF DIAGNOSIS 1

Vss

15/20A

COOLING O/P
HEATING O/P

ACT ON/OFF

OUTDOOR TH.

DEF

SD01

SD02

2S VALVE PIPE 1.2, 3S VALVE PIPE 1.2, FN, FAST FEED

PAM

ACT-CHOP

FANCHOP

SD12

SD11
AVcc

REF

MICON

AX-6M00

C209

R242

R240

R243

C605

C606

C607

C281

Q280

R287

R289

R285

R286

R288

C280

R283

R219

CN3A

LD304

1/10

1/1000
1/100

D801

CN20

R296

IC8

CN17

FAST FEED

R211

R209

R235

+17V

C403

+5V

+12V

C402

- +

C404

C219

C309

IC7

IC6

R202

MAIN P.W.B.

R281

R282

R284

Q202

Q201

R279

R273

+5V

R268

R270

R271

R269

R272

C217

Q207 R264

R267

D207

R265

R266

C218

+5V

R236

C207

C210

R303

R302

R301

-5V

+5V

+12V

+5V

R326

R329

R328

R327

1 2 3 4

R325

INH

X6
X7

R330

R331

R332

IC2

+5V

CN8

WHT
CN9

CN5

+5V

OH THERMISTOR

4400K

⫾

150K

B100/110:

CN7

RO:5.9k

⍀⫾

R35:1.433k

⍀⫾

BO/25:3400

⫾

BO/70:3400K

⫾

R35:1.433k

⍀⫾

BO/70:3400K

⫾

DEF THERMISTOR

OUTDOOR THERMISTOR

CN6

R110:1.28k

⍀⫾

R314

R315

R316

JW9

JW8

JW7

C308

R313

R312

C304

C305

C306

C307

R317

R318

R319

R320

JW10

R308

R309

R310

R311

CN15

+5V

CN16

VALVE (INDOOR 2)

ELECTRIC EXPANSION

+12V

+5V

C226

R210

R208

C225

R220

C221

C212

C205

R253

R607

R606

R605

R604

C601

C602

C603

C604

R611

R610

R609

R608

IC3

C608

R603

R602

R601

+5V

+12V

D203

Q206 R254

R257

D206

IC5

R263

C213

R255

R256

C214

C216

R258

C215

R260

R261

R259

R262

+5V

IC4

R245

R248

C208

R249

C220

R247

+5V

R306

R305

R304

C301

C302

C303

R278

R250

R214

R251

R215

R217

R218

R234
R233
R232

R231

R227

R226

C206

D205

R221

R222

R216

R207

R206

R205

R212

R203
R204

LD303

LD302

LD301

R201

C201

R237

R238

R239

R244

R275

R274

C211

D202

D201

R276
R277

4
3
2
1

PROM

R280

3
4

1
2

R110

R115

R114

ZD101

C106

PQ102

C109

R106

R102

R101

FM-0V

FM-15V

R105

D101

R103

R104

Q101

FM-15V

C102

FM-0V

C104

R109

C101

R107

XH-7P

CN30

CN31

D105

MD0

RES0

AVss

ADS2

STBY

EXTAL

NMI

ADS1

WDT

MD1

RESET

Vss

XTAL

Vcc

ADS0

FM-60˚el

SCL(E

PROM)

Vss

FORCE COOL

SDA(E

PROM)

IF-CLOCK

IPCUT

POR

Ø60

THERMISTOR

EXCHANGER

COMPRESSOR MOTOR

POWER P.W.B.

LARGE PIPE (INDOOR 2)

SMALL PIPE (INDOOR 2)

LARGE PIPE (INDOOR 1)

SMALL PIPE (INDOOR 1)

METAL COVER

6
5

16 9 1

4 5 12 13

1
2

5
6

1
2

}

␮

100

TYPE
F : FILM
C : CERAMIC
D : ELECTROLYTIC

WHITE

RED

WHITE

MARK

REMARK

MODEL

MOUNTING

REMARK

MARK

MOUNTING

REMARK

MODEL

MARK

MODEL

REMARK

MOUNTING

MARK

REMARK

MOUNTING

MODEL

MOUNTING

REMARK

MARK

REMARK

MOUNTING

MODEL

MOUNTING

REMARK

MARK

REMARK

MOUNTING

MODEL

MARK

MODEL

MOUNTING

REMARK

MOUNTING

REMARK

MODEL

MARK

MODEL

REMARK

MOUNTING

REMARK

MODEL

MARK

CAPACITOR

MARK

RATING

␮

TYPE

MOUNTING

REMARK

MOUNTING

TYPE

RATING

MARK

JUMPER WIRE

RATING

MARK

MOUNTING

REMARK

MOUNTING

RATING

MARK

H : HAND INSERT

A : AXIAL

C : SMD

R : RADIAL

MOUNTING

JUMPER WIRE

REMARK

MOUNTING

1/4

CAPACITOR

JUMPER

2SA673

Q101

RN2402

Q201

CONNECTOR

RESISTOR

RATING

⍀

MARK

R009

2.2

R005

470K

R004

R003

100

R002

R001

1/2

100

1/16

1/10

360

R284

360

R283

R282

100

R281

R280

1/16

1/10

470K

3.6K

1/6

1/2

R104

1/6

30K

3.9K

R103

R102

R101

470K

R011

1/6

R010

1/2

1/6

R106

1/6

R105

1/6

510

1/6

R115

1/6

2.4K

R114

7.5K

1.69K

R110

R109

R108

R107

1/6

10K

1/16

R204

1/16

R203

10K

R202

R201

1/16

R206

1/16

R205

1/16

10K

200

1/10

1/16

10K

200

R210

R209

200

R208

R207

1/10

1608

2125

560K

100K

1/2

R703

560K

R702

R701

1/2

1/6

1/4

R711

1.8K

R710

R708

1/4

3.3K

1/4

R714

8.2K

R713

R712

0.39

R716

680

R715

1/4

2.7K

1/4

R722

8.2

R718

1/4

2.7K

1/4

R724

3.3K

1/4

R726

R730

R723

1/6

1/4

R802

R801

1/4

R811

R803

1/16

R813

R812

1/4

10K

1/6

R831

620

1/6

R833

7.5K

R832

1/2

R717

1/4

R725

1/4

2125

1/16

10K

R290

R289

R288

R287

R286

1/16

1608

1/16

4.7K

R291

1608

R285

1/16

1.6K

R293

27K

R292

1/16

1608

5.1K

1/16

3.74K

R301

R298

R297

10K

R296

R295

1/16

1608

1/16

3.01K

R302

1608

1/16

R294

1608

1/16

3.01K

R303

1608

1/16

100

R305

100

R304

1/16

1608

1/16

10K

R312

R311

R310

R309

R308

1/16

1608

1/16

5.1K

R313

1608

1/16

R319

R318

R317

R316

1/16

1608

1/16

R320

1608

10K

1/16

2.7K

R326

R325

R324

10K

R323

1/16

1608

1/16

470

R327

1608

4.3K

1/16

10K

R331

10K

R330

R329

1.6K

R328

1/16

1608

1/16

10K

R332

1608

1/16

R501

1608

1/16

R502

1608

1/16

R506

R505

R504

R503

1/16

1608

10K

1/16

10K

R526

10K

R525

R524

10K

R523

1/16

1608

1/16

5.1K

R531

1608

1/16

5.1K

R532

1608

1/16

5.1K

R533

1608

5.1K

1/16

5.1K

R536

R535

5.1K

R534

1/16

1608

1/8

5.1K

R507

3216

5.1K

1/8

5.1K

R511

5.1K

R510

R509

5.1K

R508

1/8

3216

1/8

5.1K

R512

3216

1/16

10K

R521

1608

1/16

10K

R522

1608

1/16

100

R605

100

R604

R603

R602

1/16

1608

1/16

100

R606

1608

1/16

100

R607

1608

1/16

4.02K

R608

1608

4.02K

1/16

4.02K

R611

R610

4.02K

R609

1/16

1608

1/16

R601

1608

R314

R315

R321

R322

1/16

R306

1608

2125

1608

2125

200

1/10

R215

1/16

10K

R214

R212

R211

1/16

R217

1/16

R216

1/16

10K

1/16

10K

R221

R220

10K

R219

R218

1/16

2125

1608

510

1/16

R231

1/16

10K

R227

10K

R226

R222

1/16

R233

1/16

R232

1/16

10K

1/16

100

10K

5.1K

R237

R236

10K

R235

R234

1/16

1608

R238

100

1/16

R240

1/16

R239

1/16

10K

1/16

100

5.1K

R245

R244

100

R243

R242

1/16

1608

1/16

20K

R249

R248

3.16K

R247

1/16

1608

R250

10K

1/16

R253

1/16

R251

1/16

100

10K

1/16

3.32K

10K

R257

R256

R255

R254

1/16

1608

8.25K

1/16

10K

R260

R259

R258

1/16

1608

R261

10K

1/16

R263

1/16

R262

1/16

100

10K

1/16

10K

R267

R266

R265

R264

1/16

1608

1/16

8.25K

R269

R268

1/16

1608

10K

1/16

10K

R272

R271

10K

R270

1/16

1608

R273

1/16

R275

1/16

R274

1/16

390

1/16

5.1K

R279

R278

390

R277

R276

1/16

1608

⵰

1608

C001

OSCILLATOR

ICP

SWITCH

DSA-102MA-05F25

ABSORBER

SURGE

SURGE ARRESTER

PHOTO COUPLER

JUMPER WIRE

INDUCTOR

LED

ZENER DIODE

QFP

AX-6M00

MICON

STR-F6523

I C 1

SOP

HD74HC4051FP

I C 2

SOP

NJM2901M-TE1

I C 3

SOP

NJM2904M-TE3

I C 4

SOP

NJM2903V-TE1

I C 5

SOP

M54567FP

I C 6

SOP

M54567FP

I C 7

SOP

ULN2003ANS

I C 8

MC7805CT

REG1

SE012N

REG2

1GH46

D101

1S2076A

D102

1S2076A

D103

1SS120

D104

1SS120

D105

DAN202K

D201

DAP202K

D202

DAP202K

D203

DAN202K

D204

DAN202K

D205

DAN202K

D206

DAN202K

D207

1GH46

D702

1SS120

D703

RN2Z

D705

AK04

D706

RN3Z

D707

JUMPER WIRE

D708

RU1P

D709

1GH46

D710

1GH46

D713

1SS120

D715

1S2473

D716

1SS120

D831

450NR-12D

VARISTOR 1

450NR-12D

VARISTOR 2

450NR-12D

VARISTOR 3

VH-4P

CN1

HN2DO1FU-TE85L

D801

SOP

S24CO2BFJ-TB

PROM

I C

DIODE

SC-59

RN2402

Q202

SC-59

2SC2462LC

Q206

MPAK

2SC2462LC

Q207

MPAK

2SC2462LC

Q208

MPAK

2SA1121SC

Q209

2SC2462LC

Q501

2SC2462LC

Q502

2SC2462LC

Q503

2SC2462LC

Q504

2SC2462LC

Q505

2SC2462LC

Q506

2SC2618RC

Q801

2SC2618RC

Q802

2SC1214CT

Q831

ZD101

MPAK

RLZ6.8A

ZD201

LT1D67A

LD301

LT1D67A

LD302

LT1D67A

LD303

LT1K67A

LD304

EXCEL SA35V

L006

100uH

L801

100uH

L802

FBA04MA450

L803

FBA04MA450

L804

BL01RN1

FB1

S19-J299CT

CT1

PS2501

PQ8

PC817X

PQ831

NONE

JW2

NONE

JW3

NONE

JW7

NONE

JW8

NONE

JW9

NONE

JW10

KSM0612BTS

SERVICE-SW

CSTCS16.OMH

ICP-M75(2.7A)

ICP1

NONE

JW5

PS2501

PQ102

L007

LLDS

Q280

SC-59

TRANSISTOR

0.01

AC250

C002

0.01

AC250

C003

0.56

630

C006

4.0

AC400

C007

0.01

AC250

C008

0.01

AC250

C013

0.01

AC250

C014

0.01

AC250

C015

0.01

AC250

C016

0.01

AC250

C017

0.01

AC250

C020

220

200

C021

220

200

C004

C005

C010

C011

C101

0.082

630

C104

1000p

C105

100

C102

C106

C103

0.1

C201

0.1

C202

2200p

C109

0.1

C205

0.1

C206

0.1

C203

2200p

1608

C208

0.1

C209

0.1

C207

0.047

C211

0.1

C212

0.1

C210

0.047

1608

⵰

6.3

⵰

6.3

⵰

1608

C214

0.068

C215

0.1

C213

0.047

C217

0.047

C218

0.068

C216

4700p

1608

C220

6.3

C221

0.1

C219

4700p

C223

0.1

C224

C222

0.1

1608

C226

0.1

C227

0.1

C225

0.1

C280

2.2

C281

0.01

C228

0.1

2125

1608

C301

0.1

C302

0.1

2125

1608

2125

C304

C305

C303

0.1

C307

C308

C306

2125

1608

C309

0.1

C402

100

2125

C404

C601

680p

C403

100

C603

680p

C604

680p

C602

680p

1608

WHITE

VH-2P

CN2

RED

MINICT-22P

CN3A

2 ROWS

MINICT-11P

CN3

GRAY

MINICT-11P

CN4

BLUE

XA-2P

CN5

WHITE

XA-2P

CN6

BLACK

XA-2P

CN7

VH-2P

CN8B

PH-8P

CN9

XH-2P

CN10

MINICT-5P

CN11

CN8

CT-5P

CN13

MINICT-10P

CN14

XA-6P

CN15

XA-6P

CN16

PH-4P

CN17

ZR-12P

CN18

XH-7P

CN30

VH-2P

CN31

ZR-4P

CN20

CN19

RED

1608

C605

1000pF

C607

1000pF

C608

0.1

C606

1000pF

C707

100

C709

180

C710

330

C708

330

C714

0.01

1KV

C718

220

C721

0.1

C723

470P

2KV

C724

0.1

C722

C725

C716

330

C731

100

C733

1000pF

C734

1000pF

AC250

C732

470P

C735

1000pF

C737

C740

470P

AC250

C736

C801

0.15

C803

0.15

C804

0.01

AC250

C802

0.022

C805

0.01

AC250

C807

0.01

AC250

C808

0.1

C806

0.01

AC250

1608

C811

0.15

C813

0.15

C814

0.01

AC250

C812

0.022

C815

0.01

AC250

C817

0.01

AC250

C818

0.1

C816

0.01

AC250

C821

C822

470P

AC250

C820

MODEL RAM-50CNHZ2

– 47 –

Содержание RAM-50CNHZ2

Страница 1: ...N OUTDOOR 71 TROUBLE SHOOTING 95 PARTS LIST AND DIAGRAM 110 RAS 20CNHZ2 RAS 30CNHZ2 REFER TO THE FOUNDATION MANUAL INDOOR UNIT RAS 20CNHZ2 RAS 30CNHZ2 OUTDOOR UNIT RAM 50CNHZ2 DC INVERTER DUAL SYSTEM MULTI WALL TYPE SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT ROOM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT MAY 2002 H A P M TYPE MODEL 1ø 220V 230V 50Hz POWER SOURCE TOTAL INPUT TOTA...

Страница 2: ... be accurately calibrated in advance 7 In installing the unit having been repaired be careful to prevent the occurence of any accident such as electrical shock leak of current or bodily injury due to the drop of any part 8 To check the insulation of the unit measure the insulation resistance between the power cord plug and grounding terminal of the unit The insulation resistance should be 1M or mo...

Страница 3: ...of parts Even rejected goods should be handled in the same way Fig 1 Conductive Container 2 When any part is handled uncovered in counting packing and the like the handling person must always use himself as a body earth Make yourself a body earth by passing one M ohm earth resistance through a ring or bracelet 3 Be careful not to touch the parts with your clothing when you hold a part even if a bo...

Страница 4: ... the screwed part using a rag plate Soldering iron Grounding wire Fig 4 Grounding a soldering iron Use a high insulation mode 100V 10M or higher when ordinary iron is to be used 7 In checking circuits for maintenance inspection or some others be careful not to have the test probes of the measuring instrument shortcircuit a load circuit or the like Metal plate of aluminium stainless steel etc Stapl...

Страница 5: ...is occasion that the cooling and heating operation does not start for 3 minutes it is not abnormal and this is the result of the operation of IC delay circuit This IC delay circuit ensures that there is no danger of blowing fuse or damaging parts even if operation is restarted accidentally 5 This room air conditioner should not be used at the cooling operation when the outside temperature is below...

Страница 6: ...he unit Without a circuit breaker the danger of electric shock exists Do not install near location where there is flammable gas The outdoor unit may catch fire if flammable gas leaks around it Please ensure smooth flow of water when installing the drain hose CAUTION PRECAUTIONS DURING SHIFTING OR MAINTENANCE PRECAUTIONS DURING OPERATION Avoid an extended period of direct air flow for your health W...

Страница 7: ...0 and with the air deflector facing down or moving automatically for a long period of time water will condense on the air deflector and drips down occasionally This will wet your furniture Therefore do not operate under such condition for a long time If the amount of heat in the room is above the cooling or heating capability of the unit for example more people entering the room using heating equi...

Страница 8: ...MPUTER CIRCUIT FUSE MAIN SUPPLY FUSE FAN MOTOR POWER RELAY POWER SWITCH TEMPORARY SWITCH SERVICE SWITCH TRANSFORMER VARISTOR NOISE SUPPRESSOR THERMOSTAT REMOTE CONTROL SWITCH LIQUID CRYSTAL FUSE CAPACITY RAS 20CNHZ2 RAS 30CNHZ2 20 W NO NO NO NO NO NO NO NO NO NO YES NO NO NO NO YES IC YES SPECIFICATIONS 1350g UNIT PIPES MAX 35m REFRIGERANT CHARGING VOLUME Refrigerant 22 WITHOUT REFRIGERANT BECAUSE...

Страница 9: ...RD REMOTE CONTROL SWITCH MAXIMUM LENGTH OF PIPING STANDARD RAS 20CNHZ2 1ø 220V 230V 50Hz 16 2 50 1 00 3 00 1000 300 1080 8 53 4 50 97 33 5 7m3 min RAS 30CNHZ2 3 20 1 00 3 30 8530 3412 10236 10919 3412 11260 1100 300 1160 9 93 5 00 96 35 8 5m3 min 2150 450 2200 8 57 9 40 99 50 5 40 1 00 5 60 18426 3412 19108 3 60 0 90 4 00 1470 120 1690 8 36 6 50 98 33 7 7m3 min 12284 3071 13649 4 50 0 90 4 60 1900...

Страница 10: ...5m PIPING LENGTH L1 L2 Maximum 35m Maximum piping length for one indoor unit is 25m TWO UNITS 20m add 0g 25m add 25g 30m add 50g 35m add 75g Additional R 22 2 5 2 5 2 5 3 2 3 2 3 2 0g 0g Within 10 m Indoor unit 1 Indoor unit 2 Maximum 5 m Outdoor unit L2 L1 Indoor unit 1 Indoor unit 2 Outdoor unit ...

Страница 11: ...t which was operated first or later and reset the type of operation then perform operation again One unit Heating Heating Heating Other unit Cooling Dehumidifying Circulating fan Adjusting the Number of Indoor Units The more the indoor units to be operated the lower the power of each unit Refer to the specification on installation manual Decrease the number of indoor units to be operated especiall...

Страница 12: ...e 24 REMOTE CONTROLLER Send out operation signal to the indoor unit So as to operate the whole unit Refer page 14 AIR FILTER To prevent dust from coming into the indoor unit Refer page 31 INDOOR UNIT INDICATORS Light indicator showing the operating condition Refer page 13 FRONT PANEL AIR INLET HORIZONTAL DEFLECTOR VERTICAL DEFLECTOR AIR OUTLET Refer page 24 REMOTE CONTROLLER Send out operation sig...

Страница 13: ...s done using the temporary switch after the power source is turned off and turn on again the operation is done in automatic mode OPERATION LAMP This lamp lights during operation The OPERATION LAMP flashes in the following cases during heating 1 During preheating For about 2 3 minutes after starting up 2 During defrosting Defrosting will be performed about 50 minutes when frost forms on the heat ex...

Страница 14: ...n the following cases during heating 1 During preheating For about 2 3 minutes after starting up 2 During defrosting Defrosting will be performed about 50 minutes when frost forms on the heat exchanger of the outdoor unit for 5 10 minutes each time FILTER LAMP When the device is operated for a total of about 100 hours the FILTER lamp lights to indicate that it is time to clean the filter The lamp ...

Страница 15: ...ange more quickly TIME button Use this button to set and check the time and date RESET buttons FUNCTION selector Use this button to select the operating mode Every time you press it the mode will change from AUTO to HEAT to DEHUMIDIFY to COOL and to FAN cyclically FAN SPEED selector This determines the fan speed Every time you press this button the intensity of circulation will change from AUTO to...

Страница 16: ... Operation starts with a beep Press the button again to stop operation You can raise or lower the temperature setting as necessary by maximum of 3 C Press the temperature button and the temperature setting will change by 1 C each time The preset temperature and the actual room temperature may vary somewhat depending on conditions The display does not indicate the preset temperature in the AUTO mod...

Страница 17: ... warm quickly But you may feel a chill at the beginning MED Quiet LOW More quiet Set the desired room temperature with the TEMPERATURE buttons the display indicates the setting The range of 18 22 C is recommended as the room temperature for heating If the temperature setting is 20 C the room temperature will be controlled at around 20 C The temperature setting and the actual room temperature may v...

Страница 18: ...ure setting The device will dehumidify the room reducing the room temperature to the preset level When the room temperature is lower than the temperature setting Dehumidifying will be performed at the temperature setting slightly lower than the current room temperature regardless of the temperature setting The function will stop the indoor unit will stop emitting air as soon as the room temperatur...

Страница 19: ...ts with a beep Press the button again to stop operation The cooling function does not start if the temperature setting is higher than the current room temperature even though the OPERATION lamp lights The cooling function will start as soon as you set the temperature below the current room temperature Set the desired room temperature with the TEMPERATURE button the display indicates the setting Th...

Страница 20: ...ture fan speed changes to LOW automatically When the difference of room temperature and setting temperature is large fan starts to run at HI speed After room temperature reaches the preset temperature the cooling operation which changes the fan speed and room temperature to obtain optimum conditions for natural healthful cooling will be performed For the cooling operation FAN OPERATION You can use...

Страница 21: ...EL button The RESERVED sign goes out with a beep and the TIMER lamp turns off on the indoor unit 1 Set the current month and day with the TIMER control button 1 Press the OFF TIMER button The OFF mark blinks on the display 1 Press the ON TIMER button the ON mark blinks on the display 2 Set the turn off time with the TIMER control button Press the RESERVE button 3 Press the ON TIMER button so that ...

Страница 22: ...complete Example The device will turn off at 11 00p m Example The device will automatically turn on earlier so that the preset temperature can be reached at 7 00 a m The setting of the turn on time is now complete 4Set the turn on time with the TIMER control button 5 Point the signal window of the remote controller toward the indoor unit and press the RESERVE button The ON mark starts lighting ins...

Страница 23: ...ller The TIMER lamp lights with a beep from the indoor unit When the sleep timer has been set the display indicates the turn off time Example If you set 3 hours sleep time at 11 38 p m the turn off time is 2 38 a m 2 Press the SLEEP button and set the sleep timer The device will be turned off by the sleep timer and turned on by on timer How to Cancel Reservation Point the signal window of the remo...

Страница 24: ...nd the FAN SPEED will be set to LOW setting 30 minutes after the setting of the sleep timer Operation with the sleep timer The room temperature is kept at about 12 C minimum The room temperature is kept at about 25 28 C Sleep timer set 30 minutes later 1 hour later 3 hours later 7 hours later 2 hours later 5 C If date or current time is not set sleep timer can not be set If you set the sleep timer...

Страница 25: ...n the adjusting range shown on the right When the operation is stopped the horizontal air deflector moves and stops at the position where the air outlet closes When cooling dehumidifying When heating CAUTION In Cooling operation do not keep the horizontal air deflector swinging for a long time Some dew may form on the horizontal air deflector and some dew may fall from it RESET Adjustment of the c...

Страница 26: ...e old batteries 2 Install the new batteries The direction of the batteries should match the marks in the case 1 Do not use new and old batteries or different kinds of batteries together 2 Take out the batteries when you do not use the remote controller for 2 or 3 months CAUTION Push and pull to the direction of arrow ...

Страница 27: ...with your wake up time in the morning This will enable you to enjoy a comfortable room temperature Please use the timer effectively Dusty air filter will reduce the air volume and the cooling efficiency To prevent from wasting electric energy please clean the filter every 2 weeks Please pay attention to the room temperature and air flow direction when operating the unit for baby children and old f...

Страница 28: ...cannot be achieved When the power is resumed after a power failure the indoor unit will still remain OFF To operate the unit please press the ON OFF button again When the indoor unit is not to be used for a long period of time please switch off the power from the mains If the power from mains remains ON the indoor unit still consumes about 8W in the operation control circuit even if it is in OFF m...

Страница 29: ...lter RAS 20CNHZ2 Cleaning and maintenance must be carried out only by qualified service personal Before cleaning stop operation and switch off the power supply CAUTION CAUTION Do not bend the air cleansing and deodorizing filter as it may cause damage to the structure NOTE In case of removing the air cleansing and deodorizing filters please follow the above procedures The cooling capacity is sligh...

Страница 30: ...ont panel at three arrow portion as shown in figure and close it Claws Front cover Front panel Air filter RAS 30CNHZ2 The cooling capacity is slightly weakened and the cooling speed becomes slower when the air cleaning and deodorizing filter is used So set the fan speed to HIGH when using it in this condition Air cleansing and deodorizing filters is washable and reusable up to 20 times by using va...

Страница 31: ...e 3 Re insert the air cleansing and deodorizing filter to the filter frame Set the filter with FRONT mark facing front and slot them into the original state After attaching the filters push the front panel at three arrow portions as shown in figure and close it CAUTION Do not wash with hot water at more than 40 C The filter may shrink When washing it shake off moisture completely and dry it in the...

Страница 32: ...there is too much dust rinse with clean water and gently brush it with soft bristle brush Allow filters to dry in shade 3 Re insert the air cleansing and deodorizing filter to the filter frame Set the filter with FRONT mark facing front and slot them into the original state After attaching the filters push the front panel at three arrow portions as shown in figure and close it CAUTION Do not wash ...

Страница 33: ... front panel with both hands to detach and attach it CAUTION Do not splash or direct water to the body of the unit when cleaning it as this may cause short circuit Never use hot water above 40 C benzine gasoline acid thinner or a brush because they will damage the plastic surface and the coating Removing the Front Panel Arm When the front panel is fully opened with both hands push the right arm to...

Страница 34: ...EGULAR INSPECTION PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EVERY EITHER HALF YEARLY OR YEARLY CONTACT YOUR SALES AGENT OR SERVICE SHOP Is the earth line disconnected or broken Is the mounting frame seriously affected by rust and is the outdoor unit tilted or unstable Cleaning and maintenance must be carried out only by qualified service personal Before cleaning stop operatio...

Страница 35: ...ng noise of refrigerant in the refrigerating cycle 2 Slight rubbing noise from the fan casing which is cooled and then gradually warmed as operation stops The odor will possibly be emitted from the room air conditioner because the various odor emitted by smoke foodstuffs cosmetics and so on sticks to it So the air filter and the evaporator regularly must be cleaned to reduce the odor Please contac...

Страница 36: ...10 60 5 7 798 P 265 44 45 5 5 60 60 47 47 174 450 174 87 58 58 25 43 94 5 MODEL RAS 30CNHZ2 Air suction grill Top air suction grill Mounting plate Wireless remote controller Front cover Viewed from back Pipe lead out Discharge grill Vertical air deflector Horizontal air deflector Hole on the wall for ø65 mm pipe Connecting cable Narrow pipe ø6 35 Wide pipe ø9 52 Drain cap connection part When pipi...

Страница 37: ... 104 64 26 850 79 650 96 169 5 638 10 10 10 320 340 Air outlet 340 20 22 298 201 Handle Holes for anchor bolt 2 ø12 Fixing hole 507 198 57 12 37 Notch for anchor bolt 2 ø12 Notchs More than More than More than 100 More than 700 100 100 Service space ...

Страница 38: ...EAT ON 14 3 57 7 24 3 75 7 OFF 13 6 56 5 25 0 77 0 ON 22 3 72 1 32 3 90 1 OFF 21 6 70 9 33 0 91 4 ON 30 3 86 5 40 3 104 5 OFF 29 6 85 3 41 0 105 8 M RED YEL BLU 5V 0 35V MODEL RAS 20CNHZ2 RAS 30CNHZ2 RAM 50CNHZ2 POWER SOURCE DC 5V DC 0 35V DC360V OUTPUT 20W 40W Control circuit built in BLU BLUE YEL YELLOW BRN BROWN WHT WHITE GRY GRAY ORN ORANGE GRN GREEN RED RED BLK BLACK PNK PINK VIO VIOLET RED 3...

Страница 39: ...ide the compressor If the color has been changed conspicuously replace the compressor MODEL RAM 50CNHZ2 COMPRESSOR MODEL GW20DN8A PHASE SINGLE RATED VOLTAGE AC 220 230 V RATED FREQUENCY 50 60 Hz POWER SOURCE FOR COMPRESSOR Vcc max 360V POLE NUMBER 4 COMPRESSOR MOTOR Compressor Motor Specifications CONNECTION 20 C 68 F 75 C 167 F RESISTANCE VALUE 2M 1 05 2M 1 28 U V W WHITE YELLOW RED WHITE RED YEL...

Страница 40: ...From Outdoor Terminal Board Green Yellow Red Brown Room Temperature Gray Gray Wireless Remote MAIN P W B C D CN1 CN2 CN4 CN10 Indoor Fan Motor Auto Sweep Motor Heat Exchanger Black Black TEST CN6 CN7 HA MODEL NAME X RAS 20CNHZ2 7 RAS 30CNHZ2 6 Thermistor Thermistor Unit P w b Control M2 M1 C1C2 X Lines 3 1 3 2 1 2 4 ...

Страница 41: ... 40 WIRING DIAGRAM MODEL RAM 50CNHZ2 OUTDOOR UNIT ...

Страница 42: ...G3 SEG2 SEG1 SEG0 SEG43 SEG42 SEG41 SEG40 P40 P41 P42 P43 P00 P01 P02 P03 P10 P11 P12 P13 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 BEEP P20 P30 P31 NCVL C1 VL C2 VL C3 XC IN XC OUT VDD X OUT X IN RESET CARR P23 P22 P21 VSS IC 1 M3455OM6A 504FP LCD 1 C8 50v 1u K 1 D3 RB425D 1 2 K2K3 K4 K5 P10 P11 P12 K6 K7 K8 K8 K10 K11K12 K18 K17 K15 K16 K13 K14 D0 D1 D2 D3 R1 100k SW1 R2 P 100k R3 100k R4 100k R5 Q1 2SC3443...

Страница 43: ...1 LIGHT RECEIVING UNIT LD702 TIMER LD703 OPERATION R710 R709 ZD701 3 2 1 IR701 NOTES 1 TYPE F FILM C CERAMIC D ELECTROLYTIC 2 FORM H HAND INSERT C SMT R RADIAL A AXIAL R105 R106 R107 R108 R109 1 5 1 5 1 5 1 5 1 5 5 5 5 5 5 1 4W 1 4W 1 4W 1 4W 1 4W C C C C C R506 R507 R508 R509 R510 R511 R512 R513 R514 R515 R516 R517 R518 R519 R520 R604 R605 1K 10K 5 5 1 16W 1 16W C C R804 R805 R806 R807 120K 120K ...

Страница 44: ...C C ZD102 PTZ20A C POWER SUPPLY RESET IF CIRCUIT AUTOSWEEPMOTOR3 AUTO SWEEP MOTOR 2 AUTO SWEEP MOTOR 1 INDICATINGP C B H BOARD LIGHT RECEIVING UNIT LD702 TIMER LD703 OPERATION NOTES 1 TYPE F FILM C CERAMIC D ELECTROLYTIC 2 FORM H HAND INSERT C SMT R RADIAL A AXIAL R105 R106 R107 R108 R109 1 5 1 5 1 5 1 5 1 5 5 5 5 5 5 1 4W 1 4W 1 4W 1 4W 1 4W C C C C C R506 R507 R508 R509 R510 R511 R512 R513 R514 ...

Страница 45: ... 5 1 4 5 2 7K 1 4 A R724 5 3 3K 1 4 A R726 R730 33 A R723 5 1 6 5 3g 1 4 C R802 3g C R801 5 1 4 5 3g 1 4 C R811 3K C R803 5 1 16 5 3K 1 16 C R813 3g C R812 5 1 4 5 10K 1 6 A R831 5 620 1 6 A R833 7 5K A R832 5 1 2 A R717 1 4 A R725 1 4 2125 1 2K 5 1K 1 16 1 16 1 16 10K C R290 5 1K C R289 1 C R288 2K C R287 5 C R286 1 16 1 16 1608 1608 1608 1608 1608 1 16 4 7K C R291 5 1608 R285 1 16 1 6K C R293 5 ...

Страница 46: ...or drive circuit Indoor Outdoor interface circuit Terminal Board Temporary switch Auto Restart Reset circuit Initial setting circuit Heat exchanger temperature thermistor Indicating lamp Auto sweep motor for Air deflector Buzzer circuit Operation Timer Indoor micro computer AX 7M12 LCD wireless Room temperature thermistor Wireless receive circuit M FM Indoor Outdoor interface circuit 2 Power circu...

Страница 47: ... 51 BASIC MODE MODEL RAM 50CNHZ2 ...

Страница 48: ... minutes after the sleep key is set the sleep shift of temperature starts and upper shift is made at least 6 times If 25 C is not reached after 6 shifts shifts repeat unit 25 C is reached 3 The sleep shift upper value of set temperature is 28 C 4 After 6 hours a shift down to the initial set temperature is made at a rate of 0 33 C 5 min 5 If the operation mode is changed during sleep operation the...

Страница 49: ... 5 minutes and ON for 1 minute at high humidity or OFF for 6 minutes and ON for 1 minute at low humidity repeatedly according to the humidity judgement when the thermostat is turned OFF 3 When the operation is started by the thermostat turning ON the start of the indoor fan is delayed 32 seconds after the start of compressor operation 4 The compressor is operated forcedly for 3 minutes after opera...

Страница 50: ... 57 ...

Страница 51: ... 59 ...

Страница 52: ...ed to initial condition ASTUS 0 Released by condition 1or 2during reversing cycle period Shifted to balancing period 3 Outputs during defrost Indoor defrost request Transmitted to all units being operated in heating mode Compresor Balancing period for TDF414 seconds Starting of reversing cycle period by SDRCT2 min 1 for TSKTM2 seconds Accelerating by DFCTEP min 1 TDFSPT seconds in remaining revers...

Страница 53: ... DFPSMX DFPSMX DFCTPS Defrosting request 30sec Defrosting request Time chart when executing defrost both unit 1 and unit 2 operated Defrosting signal Unit 1 Unit 2 Unit 1 Unit 2 Unit 2 Unit 2 Unit 1 Unit 1 Turns on for cooling Cooling output Heating output Outdoor fan Compressor rotation speed 480 480 0 0 Electric expansion valve Reversing valve Request Compressor Operation Defrosting inhibit peri...

Страница 54: ...ing auto fresh Indoor unit defrost request Transmitted only to unit to which auto fresh is applied 9indoor unit stopped last Compressor Accelerated by DFSTEP rpm TDFSPT seconds and reaches defrost MAX speed DEFMAX Electric expansion valve Unit auto fresh not applied FULL CLOSE when balancing for 30 seconds has elapsed at start of defrost Unit auto fresh applied Synchronized with step up of rotatio...

Страница 55: ... is fixed in 3900min 1 during forced cooling compressor fixed speed control at start is not performed The following shows the operation state of forced cooling Power Power In rush Prevention Approx 100ms 31 25PPS Hold 500ms Hold 500ms Initialization finished TSKTM1 3900rpm Balancing period 3min 15sec sub 80sec 100ms Service switch Heating output Cooling output Outdoor fan Turns on for Heating Oper...

Страница 56: ...g COMPRESSOR SUCTION TANK Indoor unit 12 7 12 7 Service valve 12 7 12 7 Adapter IN CASE CONNECTING TO INDOOR RAS 30CNHZ2 1 Fix the Adapter to Service valve 9 52 as show below 2 Connect the connecting pipe to the Adapter 12 7 12 7 9 52 9 52 9 52 9 52 6 35 6 35 6 35 6 35 6 35 6 35 6 35 6 35 6 35 6 35 6 35 12 7 AIR FLOW Reversing valve Service valve 3 8 Silencer Silencer Strainer Strainer Air Flow Ai...

Страница 57: ...is time Q202 turns on and the reset input of the micro computer goes Hi The 5V DC line has already been 5V at this time and the micro computer starts operation When power is OFF the voltage on the 35V DC line drops and when it is approx 27V ZD201 turns off Q201 and Q202 turn off and the reset input of the micro computer goes Lo to reset it DESCRIPTION OF MAIN CIRCUIT OPERATION INDOOR MODEL RAS 20C...

Страница 58: ...01 LIGHT RECEIVING UNIT Wireless input Micro computer AX 7M12 When the buzzer sounds an approx 3 9kHz square signal is output from buzzer output pin U of the micro computer After the amplitude of this signal has been set to 12Vp p by a transistor it is applied to the buzzer The piezoelectric element in the buzzer oscillates to generate the buzzer s sound Fig 3 1 Buzzer Circuit Sound wave Metal dia...

Страница 59: ...ig 4 2 are output from pins k A of the micro computer Micro computer pins Step width Horizontal air deflectors 10ms 1 2 3 4 5 6 7 8 Horizontal air deflectors 42 41 40 39 Fig 4 2 Micro computer Output Signals As the micro computer s outputs change as shown in Fig 4 2 the core of the auto sweep motor is excited to turn the rotor Table 4 1 shows the rotation angle of horizontal air deflectors Rotatio...

Страница 60: ...emperature input R308 A 5 4 3 2 1 0 0 10 10 Heat exchanger temperature ßC Fig 6 2 20 30 40 Voltage at V A 1 64 6 Heat exchanger temperature thermistor circuit The voltage at A depends on the room temperature as shown in Fig 5 2 The circuit detects the indoor heat exchanger temperature and controls the following 1 Preheating 2 Low temperature defrosting during cooling and dehumidifying operation 3 ...

Страница 61: ...UTO RESTART AUTO RESTART NORMAL MODEL RAS 30CNHZ2 Micro Computer AX 7M12 Micro Computer AX 7M12 C605 C601 0V R611 R609 SW1 HA INPUT Micro Computer AX 7M12 36 5V R602 R601 SW2 0V X1 34 L501 5V 5V L501 34 X1 SW701 R704 R706 7 Auto Restart Temporary Switch Auto Restart Switch Temporary Switch ...

Страница 62: ...ut voltage is divided by R919 and R920 and is input to divided voltage output pin the micro computer controls the fan PWM output so the output voltage is set to the specified value The chopper frequency of the fan PWM output is 15 7kHz In the Fan current detection circuit 35V line current is detected by R105 R109 and input to abnormal fan current sensor pin L Microcomputer detects overcurrent comp...

Страница 63: ...it may stop due to abnormally low speed active error etc The compressor may continue to operate normally but the power factor will decrease the operation current will increase and the overcurrent breaker of the household power board will probably activate In case of active module faulty or defective contact Although the compressor continues to operate normally the power factor will decrease the op...

Страница 64: ...ed 4 Smoothing capacitor C020 C021 This smoothes averages the voltage rectified by the diode stacks A DC voltage is generated in the same way as in Fig 1 3 Voltage between 丣 side of C020 and 両 side of C021 is about 330V Vd DC Voltage Fig 1 2 Fig 1 3 C501 L a b a b OV OV N C502 C503 Vd DC Voltage Approx 330 or 360V during operation GRN3 GRN1 Reactor SPM2 Smoothing capacitor C501 C502 C503 Power P W...

Страница 65: ...al while it is outputting a request signal The receiving circuit in the indoor unit consists of a comparator and transistor The interface signal from the outdoor unit on the DC 35V line is supplied to C821 where DC components are eliminated and is then shaped by the comparator The shaped signal is detected by diode amplified by amp and supplied to receiving k input of the indoor microcomputer Fig ...

Страница 66: ...om indoor micro computer to outdoor microcomputer Communications from outdoor micro computer to indoor microcomputer Fig 2 1 Indoor outdoor interface Circuit MAIN P W B MAIN P W B POWER P W B INDOOR P W B OUTDOOR P W B IF RECEIVE SD1 IF TRANSMIT SD0 MICRO COMPUTER AX 7M12 IF CLOCK IF RECEIVE SDI1 IF TRANSMIT SD01 MICRO COMPUTER AX 6M00 ...

Страница 67: ...7 5ms Transmit receive switching time 33ms 1 frame 0V 5V 0V 5V 0V 5V 0V 35V Base of outdoor P W B Q801 Q802 Outdoor micro computer pin 71 69 Indoor micro computer pin 35V DC line 48 49 Pin Fig 2 2 Voltages Waveforms of indoor Outdoor Micro computers Outdoor to Indoor Communications Fig 2 3 Voltages Waveforms of indoor Outdoor Micro computers Indoor to Outdoor Communications ...

Страница 68: ...he positive e side are called the upper arm and the three transistors on the negative d side the lower arm W U V W W V V U U A DC Compressor motor U coil V coil W coil System Power module 2 R24 ACT MODULE 0 35 m H Power relay Coil R002 R003 Inrush current protection relay C006 R004 Noise filter coil L N Terminal board FUSE 25A INVERTER Fig 3 1 System power module circuit U is ON V is ON ...

Страница 69: ...oportional to duty ratio ON time ON time OFF time of this chopper signal Time T in Fig 3 2 shows the switching period and relation with rotation speed N of the compressor is shown by formula below Fig 3 2 Switching order of power module N 60 2 X 1 T Fig 3 3 shows voltage current waveform at each point shown in Figs 3 1 and 3 4 First half of upper arm is chopper second half is ON and first half of ...

Страница 70: ...control P W B may indicate as shown below From results of power module simple inspection inspection mode when operated with compressor lead disconnected LD310 blinks four times about 2 seconds later Unit has not entered the normal operation Fig 3 4 System power module circuit U is ON V is ON Self diagnosis Self diagnosis lamp and mode lp peak current cut LD301 Abnormal low speed rotation LD301 Swi...

Страница 71: ... microcomputer peripheral circuits and system power module drive and as well as DC35V are produced by switching power circuit Switching power circuit performs voltage conversion effectively by switching transistor IC1 to convert DC330V voltage to high frequency of about 20kHz to 200kHz Transistor IC1 operates as follows 1 Shifting from OFF to ON DC about 330V is applied from smoothing capacitors C...

Страница 72: ...when both the indoor and outdoor units stop This reduces power loss in standby status Reference If the power circuit for P W B seems to be faulty 1 Make sure that 5V 12V 15V 17V and 5V on the control P W B power voltage are the specified values 2 When only the 5V output is low REG 1 regulator faulty 5V 0V shorted output is too high or REG 1 is abnormal 3 When 12V and 5V are abnormal The following ...

Страница 73: ...low when measured by tester When collector voltage of Q831 is measured 3 1 24 0V Fig 5 1 D831 CN2 Q831 DC voltmeter or tester Reversing valve R832 R833 IC8 Micro Computer PQ831 12V 35V R831 V Operation condition Collector voltage of Q831 Cooling Heating Dehumidifying General operation of Cooling In normal heating operation MAX rotation speed instructed by indoor microcomputer after defrost is comp...

Страница 74: ...ge divided by R501 R502 and R608 and inputs this to microcomputer as position detection signals for points C D and E Microcomputer switches inverter using optimum timing based on position detection signals in order to control the rotation of the brushless motor Microcomputer of outdoor unit 18 59 C 1 2 13 14 12 8 9 10 11 4 5 6 7 3 D B A E 19 20 C605 C606 OV OV 5V 12V OV OV OV OV C607 IC3 R601 R253...

Страница 75: ...computer This circuit detects DC current flowing to power module and produces signal to notify microcomputer of overload status This circuit voltage amplifies DC cuccrent level detected by detection resistor and sends it to microcomputer In addition setting of internal external overload judgment is performed This circuit produces reset voltage 48 9 61 8 5 7 6 4 60 Is D104 R110 R278 R222 D205 R221 ...

Страница 76: ...tive Terminal DC current 0V R24 R41 0V R43 0V OC R42 SPM HIC Control P W B IC1 CN14 IP cutter Outdoor microcomputer F C43 9 9 8 20 9 2 9 B Ip cut circuit detects instantaneous surge current and stops inverter to protect components such as SPM As shown in diagram when current exceeding 24A flows voltage at point A detected by detection resistor is input to pin 9 of INV HIC and voltage divided by R4...

Страница 77: ... amplifier circuit Internal judgement DC voltage Judgement value according to the rotation speed internal judgement value OVL judgment to external set value A D converter E2PROM built in A D converter OVL judgment according to rotation speed Data selection according to rotation speed DC voltage OVL start current data Rotation speed data Motor control process AX 6M00 microcomputer Detection resisto...

Страница 78: ...d sends this to microcomputer Microcomputer A D converts it and then compares with internal data to judge over load control During overload control Voltage generated from DC current flowing to detection resistor is balanced by resisitor R245 and C220 then input to pin 5 of IC4 IC4 composes non inverting amplifies combined with peripheral components As shown in Fig 8 5 a value varying according to ...

Страница 79: ... change in power voltage The control system deals with change in voltage as shown below 1 As shown in Fig 8 6 U and V transistors on power module are turned on to apply current to winding of motor 2 As shown in Fig 8 7 ON time of W transistor changes according to DC voltage level so that starting current is about 10A Fig 8 5 DC current 0 0 Rotation speed Amplification rate low DC voltage low DC cu...

Страница 80: ... on and reset voltage becomes Hi Reset voltage is not set to Hi until VDD of microcomputer rises to 5V enabling operation due to ZD201 After power turns off when 12V line voltage drops ZD201 also turns OFF However Q208 is left ON since reset voltage is fed back by R294 until 12V line drops to about 7 6V This prevents chattering of reset voltage due to voltage chnge in 12V line Micro computer AX 6M...

Страница 81: ... SDO pin of interface pin and X of microcomputer Outdoor temperature is always read in voltage at pin v of microcomputer by outdoor temperature thermistor and then transferred to indoor unit side According to this value compressor rotation speed control and operation selection outdoor fan ON OFF etc in dehumidifying mode are performed Represented values of the relationship between outdoor temperat...

Страница 82: ...chopper signal is output from microcomputer for each phase The signal output from microcomputer is input to IC inverted due to active LO and 0 to 15V chopper signal is obtained This signal is then applied to transistor gate of each phase to drive AX 6M00 MICRO COMPUTER A B B B COMPRESSOR MOTOR IP CUTTER Id CONTROL CIRCUIT GRY PWB MAIN Fig 11 1 ...

Страница 83: ... 91 120 U U V W W V U U U V V V W W 120 120 120 120 V V W W W U U V Drive signal at point Drive signal at point B 5V 0V 15V 0V A Fig 11 2 ...

Страница 84: ...expansion valve or microcomputer is defective Fig 12 2 shows logic waveform when expansion valve is operating 2 8 1 9 16 1 2 3 4 5 6 3 39 15 14 40 7 6 41 10 11 42 4 5 12 13 Microcomputer Valve Valve Valve Valve B A B A IC6 7 5V R208 12V 12V C225 R209 O CN15 16 Electric expansion valve 1 V Fig 12 1 Pin Lear phase No wire 4 4 5 6 7 8 3 3 2 2 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 1 1 White Yellow Orange Bl...

Страница 85: ...l signal will convert to Vsp voltage by smoothing circuit Q101 RC filter Fan motor will start to rotate when Vsp was proceeding over than 1 7V and generate FG pulse by rotation speed FG pulse will feed back to Outdoor Microprocessor through PQ102 PQ102 is the isolator between Microprocessor circuit and DC Fan Motor circuit which has to match the Fan Motor revolution with instructed revolution Such...

Страница 86: ...turb the Fan rotation by inserting materials into propeller fan or ice has growing inside of outdoor unit by snowing Fan lock detecting system may be actidiated by strong wind ex 17m sec or above against the Fan rotation In this case unit will be restart again after a while Fan lock detecting system may be actidiated even though the DC Fan Motor is rotating correctly the possible casue is due to M...

Страница 87: ...perate outdoor unit independently How is self diagnosis lamp LD301 lighting If fuse is blown other parts may be affected Take care Mainly varistor 2 diode stack smoothing capacitor and system power module Is switching power circuit OK Is 3A fuse normal Refer to lighting mode of self diagnosis lamps Replace defective components Check to see whether the connected cord D cable correctly If reversed c...

Страница 88: ...l terminals of interface relay Is voltage 10V or more being generated between contact terminals of interface relay Check interface curcuit Yes Yes No No No Yes D707 and C710 could be defective There may be defective parts between 12V output of switching power supply on control P W B and interface relay Also be care of solder touch etc Repalce interface relay Yes No Which is broken C D Indoor 1 Or ...

Страница 89: ...ule SPM2 Replace defective parts Connect thermistor Replace thermistor Replace thermistor circuit parts Looking at P W B diagram and circuit diagram perform continuity check of pattern and lead wire Looking at P W B diagram and circuit diagram perform continuity check of pattern and lead wire No No Yes Be careful not to forget to connect it after servicing is completed Is continuity of thermistor ...

Страница 90: ...rmistor circuit normal Is system power module SPM2 normal Replace main P W B Is system power module normal SPM2 Replace thermistor circuit parts Replace system power module SPM2 Replace system power module SPM2 No No No Looking at P W B diagram and circuit diagram perform continuity check of pattern and lead wire Yes Yes No No No Yes Yes Yes Is drive circuit normal Replace defective parts ...

Страница 91: ...n so this is not abnormal Is system power module normal SPM2 Is drive circuit normal Yes No No No Replace system power module SPM2 Replace defective parts Replace defective parts Try operation again Is operation normal Perform final check of operation No Yes Is reset circuit normal Check again to see that all connectors are connected securely ...

Страница 92: ...lamp lighting Where OVL lamp lights this indicates over load and is not abnormal Yes Check cords connected to system power module again If any cord is disconnected connect correctly Check diode stack If phenomenon persists replace system power module Over voltage error blinks 15 times System power module SPM2 is abnormal No ...

Страница 93: ...t 10 cm long with alligator clip or IC clip 1 Connect pipe to high pressure and low pressure side service valves Connect large diameter and small diameter side service values of outdoor unit using universal union and copper pipe as shown on the right Note 1 When checking is performed using service switch of outdoor unit if both indoor units are not connected to interface signal DC35V C D terminals...

Страница 94: ...round level 2 Also note that it takes about 10 minutes until the voltage fall after the power switch is turned off DANGER Across a b 0V line Across a ground Across b 0V line ground approx 360V approx 155 170V approx 155 170V When using an oscilloscope never ground it Don t forget that high voltages as noted above may apply to the oscilloscope DANGER Always keep your hands and metallic things away ...

Страница 95: ...rformed to prevent secondary trouble disconnect red gray wire connected to system power module SPM2 from diode stack Also be sure to perform discharging of smoothing capacitor DISCHARGE PROCEDURE AND HOW TO CUT OFF POWER TO POWER CIRCUIT WARNING As shown left apply soldering iron to metal parts receptacles in sleeve corresponding to P1 and N1 terminals of system power module SPM2 RAM 50CNHZ2 GRN3 ...

Страница 96: ...efective parts Around outdoor interface transmitting circuit Check indoor interface transmitting circuit Check electrical parts of outdoor unit and repair defective parts Around outdoor interface transmitting circuit Check room temperature thermistor If defective replace it Normal values 10 C approx 20kΩ 25 C approx 10kΩ 30 C approx 8kΩ Check heat exchanger thermistor If defective replace it Norma...

Страница 97: ...SIS LAMP GRN3 GRN1 Reactor SPM2 Smoothing capacitor C501 C502 C503 Power P W B Terminal Board 2p Diode Stack D25 VB60 Switching Power P W B For Indoor P W B Service switch Control P W B RAM 50CNHZ2 1 Location of self diagnosis lamp ...

Страница 98: ...OWER VOLTAGE CONNECTION OF REACTOR FAN MOTOR FAN MOTOR CIRCUIT CABLE IS WRONG CONNECTED CABLE IS OPEN INTERFACE CIRCUIT BETWEEN INDOOR UNIT AND OUTDOOR UNIT COMMUNICATIONS BETWEEN INDOOR UNIT AND OUTDOOR UNIT ARE INTERRUPTED OVERVOLTAGE IS DETECTED BY SYSTEM POWER MODULE MICROCOMPUTER CANNOT READ THE DATA IN EEPROM OUTDOOR FAN RPM IS NOT ROTATE AS INTENDED RPM POWER VOLTAGE IS ABNORMALLY LOW THERM...

Страница 99: ...ector Emitter PGU PGV PGW NGU NGV NGW U V W P1 P2 U N1 L2L1 Element circuit Circuit diagram of the module Terminal symbol of system module See next page for values measured by tester Do not disassemble the system power module when troubleshooting is performed ...

Страница 100: ...er since built in battery is set in reverse direction and terminals are reversed CAUTION If inner circuit of power module is disconnected open the indicator of tester will not swing and this may assumed as normal In this case if indicator swings when and terminals are connected in reverse of diagram below Fig 2 it is normal Furthermore compare how indicator swings at U V and W phases If indicator ...

Страница 101: ...is lamp lights in the same condition as above The compressor is defective Replace it and seal refrigerant If the compressor checker for an inverter type air conditioner is available re check using it JUDGING BETWEEN GAS LEAKAGE AND COMPRESSOR DEFECTIVE Blinking off Time until the lamp lights Approx 10 seconds Approx 10 seconds Approx 10 seconds Within Approx 30 seconds Compressor Compressor Gas le...

Страница 102: ... 110 PARTS LIST AND DIAGRAM MODEL RAS 20CNHZ2 11 2 18 8 20 12 63 1 4 60 3 7 14 15 6 5 16 13 88 61 17 9 62 10 ...

Страница 103: ...PMRAS 07C1 013 1 DRAIN HOSE 11 PMRAS 20CNHZ2 003 1 FRONT COVER ASS Y 12 PMRAS 25CNH2 012 1 MOUNTING PLATE 13 PMRAS 40CNH2 021 1 REMOTE CONTROL 14 PMRAS 25CNH2 014 3 EVAPORATOR 15 PMRAS 10C6M 006 3 UNION 2 16 PMRAS 09CHA1R 005 1 UNION 3 17 PMRAS 10C6M 001 1 STEP MOTOR 60 PMRAS 10C3M 003 1 REMOTE CONTROL HOLDER 61 PMRAS 25CNH2 018 1 FILTER 62 PMRAS 25CNH2 019 2 CAP 63 PMRAS 25CNH2 020 1 PIPE SUPPORT...

Страница 104: ... 112 MODEL RAS 30CNHZ2 8 12 23 1 3 5 60 14 4 7 6 13 61 61 11 62 35 12 10 9 17 2 63 18 19 15 16 ...

Страница 105: ...RAS 30CNHZ2 004 1 FRONT COVER ASS Y 12 PMRAS 05C 009 1 MOUNTING PLATE 13 PMRAS 40CNH2 021 1 REMOTE CONTROL 14 PMRAS 30CNHZ2 005 1 EVAPORATOR 15 PMRAS 13C6K 003 1 UNION 2 16 PMRAS 5142C 006 1 UNION 4 17 PMRAS 05C 041 1 STEP MOTOR 18 PMRAS 07C1 006 1 TERMINAL 2P 19 PMRAS 30CNHZ2 001 1 PWB MAIN 23 PMRAS 32CNH2 009 1 INDICATION BOARD 35 PMRAS 25CNH2 024 1 THERMISTOR 60 PMRAS 10C3M 003 1 REMOTE CONTROL...

Страница 106: ... 114 9 33 4 32 14 3 1 27 24 35 26 13 7 5 22 19 30 29 23 21 20 16 36 28 31 34 37 11 12 10 15 6 2 8 9 38 40 41 18 17 MODEL RAM 50CNHZ2 ...

Страница 107: ...CNH2 906 1 FUSE 2A 20 PMRAC 40CNH2 901 1 SYSTEM POWER MODULE 21 PMRAC 40CNH2 902 1 DIODE STACK D25VB60 22 PMRAS 07C1 006 2 TERMINAL BOARD 2P 23 PMRAC 40CNH2 916 1 THERMISTOR OUTSIDE TEMPERATURE 24 PMRAC 40CNH2 917 1 PROPELLER FAN 26 PMRAC 40CNH2 918 1 SUPPORT FAN MOTOR 27 PMRAM 50CNHZ2 912 1 FAN MOTOR 40W 28 PMRAC 40CNH2 904 1 CABINET 29 PMRAC 40CNH2 921 1 NET 30 PMRAC 40CNH2 922 1 TOP COVER 31 PM...

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