Merloni Elettrodomestici - Indesit Company -...

Merloni

Elettrodomestici

GB 2001-09-13/01 1-28

Language Issue/Edition Page

Service Manual

Combined width 60

Merloni

Elettrodomestici

Combined width 60

Service ManualGB 2001-09-13/01 2-28


Contents

1 DOUBLE DOOR

3

2 COMBINED

5

3 COMBINED WITH A COMPRESSOR AND A SOLENOID VALVE

7

3.1 Standard Compressor Solenoid Valve Specifications 8

3.2 Combined Operation and double door with Chiller 9

3.3 Thermostation 10

4 DEFECTIVENESS SIMULATION

12

5 PROBE TEMPERATURE

13

6 DIAGRAMS OF WIRING HARNESS CARDS

14

6.1 Connections CB EV NF BASE only Indesit 14

6.2 Connections CB EV EVOLUTION Ariston and Indesit 16

6.3 Connection CB EV BASE Ariston and Indesit 17

6.4 Connection CB EV with Display only Ariston 18

6.5 Legend of initials for new Indesit width 60 cm giugiaro aesthetics 20

6.6 Legend of initials for new Ariston width 60 cm that permits to identify the product’s

functions and performance 22

Merloni

Elettrodomestici

Combined width 60



1 DOUBLE DOOR

1. Thermostat A03 0302 (+4 –16 –32). Disappearing bulb type with reference to small red flag.

2. Two internal joints with small ring (freezer capillary coil and fridge/freezercoil).

3. Aluminum tape is provided under the small central face instead of the me-tallic sealer.

4. The metallic sealer is applied to eliminate the upper condensation.

5. The thermostat must be covered in order to avoid short circuiting causedby eventual condensation.

6. The three versions in the “A” class differ in the motor, the load +5 gr. is anextra coil in the freezer.

Merloni

Elettrodomestici

Combined width 60



Fig. 1

Positioning of foamed joints for the Double Door

Design valid for the models:

R 34 • R 40 • R 29 • RA 34 • RA 29 • RA 40 • R 34 S • R 34 B • R 34 Y •R 29 S • R 29 B • R 29 Y • RE 34 V • RE 40 V • MTA 291 V • MTA 331 C •MTA 292 V • MTA 332 V • MTA 332 C • MTA 401 C • MTA 335 V • MTA 334 V• MTA 333 V

Merloni

Elettrodomestici

Combined width 60



2 COMBINED

1. Thermostat 077B 6813 insert 800 mm disappearing bulb (+4 –18 –32)(reference with small read flag).

2. Scheme of thermostat/light switch connections on the foamed connectoras seen from the front (top zone).

3. There are two joints with small rings inside the freezer.In the eventual replacement of the freezer evaporator the small rings touse are the 8/7 mm type, this is because the fridge evaporator tube is7 mm and the freezer evaporator tubes are 8 mm.

4. The shortest or enameled tube, coming from the fridge evaporator, is to beconnected with the freezer evaporator tube that does not come from thebottom part but that starts its course in the upper part.

Fig. 2

Positioning foamed joints for the combined models

BROWN -THERMOSTATBLACK

00

EARTH

BROWN - SWITCH

0

0

CODE MODEL

248302482525766232122400423220241322456225236232322413024561252342523524465

CA133ICA138ICA138SC138 (F)C138C138 (E)C138 (UK)CA138NLC138LC140 (F)C133 (UK)CA133NLC133 EUC133LC139 (UK)

Merloni

Elettrodomestici

Combined width 60



Fig. 3

Wiring harness box for Fridge Thermostat (foamed)

1

Fridge Thermostat two contacts

8

Fast-on Terminal board at 4.8 fridge compressor

2

ILI

9

Power supply cable

3

Flying male 6 way Molex (39-03-6064)

A1

Brown - 1

4

Coupling small block 6 way Molex

A

Brown

5

Female panel 6 way Molex foamed (39-03-6060)

B

Black

6

LI

C

Yellow/Green

7

Wiring harness box for Fridge Thermostat (foamed)

D

Blue

6

4

3

LN

1

F F F F F F1 2 3 4 5 6

M M M M M M

CBDA8

3

1

45

6

B

A

A C

D

A1

2

7

9

Merloni

Elettrodomestici

Combined width 60



3 COMBINED WITH A COMPRESSOR

AND A SOLENOID VALVE

Fig. 4

Combined with a Compressor and a Solenoid Valve

1

Compressor

7

Freezer Evaporator (RED)

2

Condenser

8

Fridge Evaporator (RED)

3

Heating Tube (LIGHT BLUE)

9

Solenoid Valve

4

Return Tube (GREEN)

10

Gas accumulation bottle

5

Fridge Capillary Tube (RED)

11

Molecular Filter

6

Freezer Capillary Tube (YELLOW)

Low-Pressure

EVAPORATOR COMPONENTS

RED --> Fridge + Freezer RouteYELLOW --> Freezer RouteGREEN --> Return Tube

High Pressure

COMMON COMPONENTS

LIGHT BLUE --> Heating Tube o

N.B.

All the types with compressor and solenoid valve are handled electronically.

9

10

FZ

FR

EV

8

7

56

1

11

2

3

4

Merloni

Elettrodomestici

Combined width 60



3.1 Standard Compressor Solenoid Valve Specifications

3.1.1 Characteristics

3.1.2 User Interface

Fig. 6

Monocompressor with Solenoid ValveStandard Versions – Electronic Control

1

Fridge Thermostat

4

Super FZ Indicator (yellow Led)

2

Temperature Indicator Alarm (red Led)

5

Freezer Thermostat

3

Power Indicator (green Led)

6

Super FZ Button

Loads

Fig. 5

Thermodynamic Circuit Sections

1

Fridge (and Freezer)

4

Fridge Evaporator

2

Solenoid Valve

5

Freezer Evaporator

3

Only Freezer

6

Return

1 COMPRESSOR1 LIGHT BULB1 SOLENOID VALVE

Input An.

1 FRIDGE SOLENOID VALVE PROBE1 FRIDGE AIR PROBE1 FREEZER AIR PROBE

Input

1 SUPER FREEZER BUTTON1 FRIDGE DOOR SWITCH

Led

1 SUPER FREEZER LED1 ALARM LED1 NETWORK LED

Serial LineEEPROM MemoryProper Micro Pin

2 KNOBS for the separate regulation of the Fridge (FR) and Freezer (FZ) compartments

1 PUSH BUTTON for the insertion of the Super FZ function 3 LED red for the temperature alarm, green for power supply, yellow for Super FZ

function

2

14

6

3

5

10

2

3 4

51

0

23

4

5

1 52 3 4 6

Merloni

Elettrodomestici

Combined width 60



3.2 Combined Operation and double door with Chiller

A part of the fridge evaporator is destined to serve the chiller (FRESH BOX).The evaporation begins in the section below corresponding to the chiller andthen goes on to the cooling of the fridge compartment as in the normal prod-ucts that do not have this function. In this way the area directly above thevegetable container is the coldest area in the entire fridge compartment, witha delta temperature of 2-3 °C in respect to the average fridge compartment invarious environments.

Fig. 7

Positioning foamed joints for combined fridges with Chiller and Air

A

B B

C

C

A

12

CODE MODEL

2573325193260162601726005231712400723216241332538025240231722320423206232052317524008240002317624506245072450824002241312523924467244662400125191252422519225244

MBA4041CMBA4031CVMBA4042CMBA3841CMBA3831CC238C238 (F)CA238CA238 (UK)C237CA238LC238TC238SC238BC238YC240C240 (F)CA240C240TC240SC240BC240YC233CA233 (UK)C233LCE239V (UK)CA239 (UKC242MBA3831VCE238VMBA3832VCE240VC239NF

Merloni

Elettrodomestici

Combined width 60



3.3 Thermostation

These models are provided with an overload cutout control that activates thecompressor automatically after about 8 minutes, by each power interruption.

This control intervenes at the moment of installation, and at the cause ofswitching off a setting or whether caused by a black-out.

1. With the knob in OFF and the FR knob on ON the apparatus will not startup.

2. The freezer compartment may not be excluded.

3. The capillary that goes to the Fridge is noted in white enamel.

4. The solenoid valve tube that is welded to the fridge capillary is markedwith white tape.

5. The coil tube that is connected to the freezer evaporator tube above ismarked in enamel.

6. There are two joints with small ring inside the freezer compartment.In the eventual replacement of the freezer evaporator the small rings touse are those of 8/7 mm, this is because the fridge evaporator tube is7 mm and the freezer evaporator tube is 8 mm.

7. There is a gas bottle in the freezer circuit for the accumulation of GASwhen the fridge remains excluded.

8. There are three foamed probes: one for fridge exclusion, one for the inclu-sion +5, one for freezer exclusion.

9. The freezer alarm indicator switches on with temperatures warmer by –1.

Independent Fridge (FR) and Freezer (FZ) regulation Possible Solenoid Valve states:a) FR (and FZ): first Fridge Evaporator and bit descended in the Freezerb) Only FZ: only Freezer EvaporatorIn handling the Solenoid Valve the Fridge however has precedence in respect to the Freezer incase of simultaneous operation required

N.B.

The OFF phase in a compartment does not mean that the Compressor is OFF, theother compartment may always request cooling.

N.B.

The ON phase of the product or of a single compartment initiates the settings at“1” and regulation is from “1” to “5”.The position between “0” and “1” is a plateau recognized as “the first start up”that however is not indicated in the print label and serves exclusively as protec-tion for cases in which the user, choosing the minimum (“1”), lowers the knobtowards the “0”.

Merloni

Elettrodomestici

Combined width 60



3.3.1 Solenoid valve diagram

• The solenoid valve is powered by impulses, a “Tester” check on the Fastonconnection is sufficient to test the correct operation. In cases of problems with the Tester check, you can connect a fridge lightbulb to the solenoid valve heads appropriately mounted on the light bulbholder complete with terminals (this simple type of instrument will permitthe viewing of the light bulb switching on and off thereby checking theimpulses arriving from the solenoid valve).

• If the fridge light remains on or flashes check the presence of the magnetinside the door panel, if the defect continues replace the card.

Positioning the magnet

Positioning the card

• In the case of inverted solenoid valve capillaries, in order to reset invertthe solenoid valve electrical connection.

FRIDGE CAPILLARYFILTER ARRIVAL

00

Faston 4.8 x 0.8 I

I 0 FREEZER CAPILLARYFaston 6.3 x 0.8

WIRINGHARNESS

Merloni

Elettrodomestici

Combined width 60



4 DEFECTIVENESS SIMULATION

DEFECT SIMULATION T. A. MAN. FR POS. MAN. FZ POS. FR AVERAGE FZ AVERAGE RE-

SULT Solenoid valve inverted capillary 25 °C 3 3 N.B. –30 °C (V.I.C.)

KO

Open Fridge evaporator probe 25 °C 3 3 +3 °C –22 °C

OK

Open Fridge evaporator probe 30 °C 1 3 +7,5 °C –22 °C

OK

Open fridge air probe 30 °C 4 3 +8 °C –20 °C

KO

Fridge evaporator and fridge air probes inverted 30 °C 3 3 +12,5 °C –28 °C

KO

Fridge evaporator and fridge air probes inverted 30 °C 4 3 +10 °C –25 °C

KO

Open freezer air probe 30 °C 3 2 +3 °C –26 °C

OK

Open freezer air probe 30 °C 2 3 +3 °C –26 °C

OK

Open freezer air probe 30 °C 1 3 +5,5°C –26 °C

OK

Fridge air and freezer air probesinverted 30 °C 3 3 NO COOLING –28 °C

KO

Fridge evaporator and Freezer air probes inverted 30 °C 3 3 NO COOLING –38 °C (V.I.C.)

KO

Defective card 25 °C 2 1 –18 °C (VIC) –30 °C

KO

Blocked FZ capillary 25 °C 2 2 +4 °C –10 °C

KO

Inverted capillaries / FZ capillary blocked 25 °C 2 2 N.B. N.B.

KO

Inverted capillaries 25 °C 0 2 –5 °C –20 °C

KO

Fridge capillary blocked 25 °C 2 2 N.B. N.B.

KO

Fridge capillary blocked / inverted capillaries 25 °C 2 2 N.B. –35 °C (V.I.C.)

KO

Solenoid valve blocks on fridge signal 25 °C 2 2 0 °C –20 °C

KO

Solenoid valve blocks on freezer signal 25 °C 2 2 N.B. –35 °C

KO

Solenoid valve permits gas leakage 25 °C 0 2 +3 °C –18 °C

KO

Merloni

Elettrodomestici

Combined width 60



5 PROBE TEMPERATURE

Temperature

°CResistance

Ω Temperature

°CResistance

Ω

50 9736 –12 1649745 1181 –13 1742940 1493 –14 1842035 1765 –15 1947530 2176 –16 2059625 2700 –17 2179120 3360 –18 2306315 4225 –19 2441810 5348 –20 258629 5611 –21 274028 5888 –22 290457 6182 –23 307976 6491 –24 326685 6818 –25 346664 7164 –26 368003 7529 –27 390822 7916 –28 415211 8325 –29 441310 8758 –30 46921

–1 9216 –31 49910–2 9701 –32 53111–3 10215 –33 56541–4 10759 –34 60218–5 11337 –35 64161–6 11949 –36 68393–7 12598 –37 72932–8 13288 –38 77808–9 14019 –39 83046

–10 14795 –40 88577–11 15620

Merloni

Elettrodomestici

Combined width 60



6 DIAGRAMS OF WIRING HARNESS CARDS

6.1 Connections CB EV partial NF only Indesit Basic

6.1.1 Card connectors

4 way Molex 94529 Connector: for Serial

6 way Molex 94529 Connector: for Probes

12 way Molex 94529 Connector: for Power supply and Loads

6.1.2 NF Battery Connector

12 way Molex 39036120 Connector: intermediary for NF Battery

1 2 3 4Vcc RX TX GND

1 2 3 4 5 6Signal SND1 Ref. SND1-2 Signal SND2 Signal SND3 Ref. SND3-4 Signal SND4SND1 = FR evaporator probe SND3 = FZ air probe

SND2 = FR air probe SND4 = FZ evaporator probe

Note (*)

1 2 3 4 5 6 7 8 9 10 11 12L CPS1 N.C. L Res L EV / L CPS2 L Light bulb L FZ Vent Line N.C. N.C. N FZ Vent N Light bulb Neutral

Note (*)

Foamed side

NeutralNeutral

ResNeutral FZ Vent.

Pil. FZ Vent.

Neutral Res

Pil. ResNeutral

ResPil. Res Pil. EV Pil. CPS1 Line Pil. CPS2

1 2 3 4 5 6 7 8 9 10 11 12

NF Battery side

Thermofus.Thermofus. FZ Ventilator FZ Ventilator R1 Res R1 Res R2 Res R2 Res Empty Empty Empty Empty

Note (*)

CPS2 present only in alternative to the Solenoid Valve

Merloni

Elettrodomestici

Combined width 60



Fig. 8

ELEC

TRON

IC C

ARD

(vie

w fr

om th

e ba

ck)

Foam

ed s

ide

NF

Bat

tery

sid

e

Com

pres

sor

POW

ER S

UPPL

Y

COM

PRES

SOR

COM

PART

MEN

T

B B

Bi

1

BB

R

N

GrRG

M

MB

B

MB

N BG-

VM

N

MR

23

41

23

45

6

SND1

SND2

SND3

SND4

Resi

stan

ce R

2

Resi

stan

ce R

1

AIR

Fan

Ther

mof

usib

le

12 11 10 9 8 7 6 5 4 3 2 1

FR L

ight

bul

b1

23

45

6NC

NC

78

910

1112

LN

1T

SERI

AL

Sole

noid

Val

ve

NC

Merloni

Elettrodomestici

Combined width 60



6.2 Connections CB EV Indesit EVOLUTION and Ariston basic

6.2.1 Card Connectors

4 way Molex 94529 Connectors: for Serial

6 way Molex 94529 Connectors: for Probes

12 way Molex 94529 Connectors: for Power supply and Loads

Fig. 9


1 2 3 4 5 6Signal SND1 Ref. SND1-2 Signal SND2 Signal SND3 Ref. SND3SND1 = FR evaporator probe SND3 = FZ air probe

SND2 = FR air probe

Note (*) Note (**)

1 2 3 4 5 6 7 8 9 10 11 12

L CPS1 L AIR N.C. L EV / L CPS2L. Light

bulbN.C. Line N.C. N AIR N EV

N Light bulb

Neutral

Note (*)

CPS2 present only in alternative to the Solenoid Valve

Note (**)

N.C. if Bi-compressor

FR Light bulb

ELECTRONIC CARD(view from the back)

POWER

SERIAL

AIR Fan

Solenoid Valve

Compressor

POWER SUPPLY

COMPRESSOR COMPARTMENT

B

M

1

BB

N

R

B

Bi

B

BG-V

M

M

N

M R

2 3 4 1 2 3 4 5 6

SND1 SND2 SND3

1 2 3 4 5 6NC NCNC

7 8 9 10 11 12

L N 1 T

Merloni

Elettrodomestici

Combined width 60



6.3 Connection CB EV Indesit basic



6 way Molex 94529 Connectors: for Probes

SND1 = FR evaporator probe SND2 = FZ air probe SND3 = FR air probe

12 way Molex 94529 Connectors: for Power supply and Loads

Fig. 10


1 2 3 4 5 6Signal SND1 Ref. SND1 Signal SND2 Ref. SND2 Ref. SND3 Signal SND3

Note #4

Note #2 Note #3 Note #11 2 3 4 5 6 7 8 9 10 11 12

L Light bulb L EV L Compr.#2L Compr. Line N.C. N.C. N.C. N.C. N EV. N Light

bulb Neutral

Note #1 The terminals used permit to unite 2 cables together (not more) which could in case of necessity accompany a Neutral cable

Note #2 Wiring harness provided for bi-compressor models that will be produced from 2001(to avoid new card in future)

Note #3 However leave an unconnected space to respect with certainty the standard distances between the two phases

Note #4 A 12 way connector was chosen that is superabundant for the purpose in order to use the same (coupling it to the box containing the card) even in more complex future applications

FR Light bulb

ELECTRONIC CARD(view from the back)

SERIAL

Solenoid Valve

Compressor

POWER SUPPLY

COMPRESSOR COMPARTMENT

B

M

1

BB

N

R

B

BG-V

M

M

N

M R

2 3 4 1 2 3 4 5 6

SND1 SND2 SND3

1 2 3 4 5 6NC NC NCNC NC

7 8 9 10 11 12

L N 1 T

Merloni

Merloni

Merloni

Merloni

Merloni

Merloni

Merloni

Elettrodomestici

Combined width 60



6.4 Connection CB EV with Display only Ariston



6 way Molex 94529 Connector: for Probes

12 way Molex 94529 Connector: for Power supply and Loads

7 way Molex 5102 Connector on Power Card: for Power supply and Logic

7 way Molex 5102 Connector on Display Card: for Power supply and Logic


1 2 3 4 5 6Signal SND1 Ref. SND1-2 Signal SND2 Signal SND3 Ref. SND3SND1 = FR evaporator probe SND3 = FZ air probe

SND2 = FR air probe

1 2 3 4 5 6 7 8 9 10 11 12

L CPS1 L AIR N.C. L EV L Light bulb N.C. Line N.C. N AIR N EV N Light

bulb Neutral

1 2 3 4 5 6 7– FIL + FIL –32 V RX TX REF –5 V

1 2 3 4 5 6 7– FIL + FIL –32 V RX TX REF –5 V

Merloni Elettrodomestici

Combined width 60Service Manual

GB 2001-09-13/01 19-28Language Issue/Edition Page

Fig. 11

FR L

ight

bul

b

ELEC

TRON

IC C

ARD

(vie

w fr

om th

e ba

ck)

POW

ER

SERI

AL

DISP

LAY

CARD

AIR

Fan

Solen

oid

Valve

Com

pres

sor

Powe

r sup

ply a

nd L

ogic

disp

lay

card

POW

ER S

UPPL

Y

COM

PRES

SOR

COM

PART

MEN

T

B

M

1

BB

N

R

B

Bi

B

B

M

M

N

MR

23

41

23

45

61 7

12

34

56

7

7 w

ay fl

ying

Conn

ectio

n (m

ale-

fem

ale)

7 w

ay C

onne

ctor

on p

cb p

ower

car

d

SND1

SND2

SND3

12

34

56 NC

NCNC

78

910

1112

LN

1T

G -V




6.5 Legend of initials for new Indesit width 60 cm giugiaro aesthetics

Fig. 12 DOUBLE DOOR Example

Fig. 13 COMBINE Example

R A 34 L (UK)

MarketsLitraggio

R = Refrigerator

L = Aesthetic Luxury/Lock for EX modelsI = Isobutane Gas B = Color Blue T = Color TeakY = Color YellowS = Color SilverX = Stainless steel V = Ventilated (Aircooler system)

A = Efficiency Class “A”E = Evolution

R A 1 33 L

MarketsLitraggio

C = Combined

L = Aesthetic Luxury/Lock for EX modelsI = Isobutane Gas B = Color Blue T = Color TeakY = Color YellowS = Color SilverX = Stainless steel V = Ventilated (Aircooler system)NF = No Frost

A = Efficiency Class “A”E = Evolution

1 = 1 compressor2 = 1 compressor + EV2 = 2 compressors (only for Setubal)

(UK)




Fig. 14 SINGLE DOOR Example

Fig. 15 FREEZERS Example

S A 46 L (UK)

MarketsLitraggio

S = Single door

L = Aesthetic Luxury/Lock for EX modelsI = Isobutane Gas B = Color Blue T = Color TeakY = Color YellowS = Color SilverX = Stainless steel V = Ventilated (Aircooler system)A = Efficiency Class “A”

OF A 230 SI (UK)

MarketsLitraggio

A = Efficiency Class “A”

UF = Upright FreezerOF = Horizontal Freezer

SI = Super Insulate




6.6 Legend of initials for new Ariston width 60 cm that permits to identifythe product’s functions and performance

MT Double door

MB Combined

MS Single door

MU Upright Freezer

MH Horizontal Freezer

first 2 numbers structure / Litraggio (as for old models)

3rd number 1 = 1 cps 2 = 2 cps 3 = 1 cps + EV 4 = EV+Display+AIR

4th number (3rd for dp) will indicate the color

Colors:

1 White

2 Stainless steel

3 Silver

4 Yellow

5 Blue

6 Teak

Other letters indicate performance

C Chiller

V Air

EXAMPLES

Fig. 16 MTA 332 V

Fig. 17 MBA 3841 C

MT A 33 2 V

330 litres AIR

InEff. Class: “A”

Double

Combi

MB A 38 4 1

380 litres Chiller

WhiteEff. Class: “A”

C

EV + Disp




The upper hinge, in order to reverse the door, is supplied and placed insidethe product.

Reversible door models MBA3842C – MBA3841C – MBA4041C – MBA4042C

3

1

2




4

5

3




Sequence for Display Card replacement

Fig. 18 Phase 1




Fig. 19 Phase 2

Fig. 20 Phase 3




Fig. 21 Phase 4

Fig. 22 Phase 5


Merloni Elettrodomestici spaviale Aristide Merloni, 47 - 60044 Fabrianotel. 0732/6611 - telex 560196 - fax 0732/662954www.Merloni.com



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