Service Documentation

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Service Documentation

Service Manual No. 19/2007 Version 01 LHG/TKD-Ne/12.08.15

Page 1/55 19200801SM_en.docx

After Sales Service International

Appliance Documentation

CBN(P)es 3967

from Index 20 PremiumPlus with IceMaker, LED light column,

BioFresh lighting, soft stop mechanism

Combined refrigerator-freezer with BioFresh and NoFrost

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Page 2/55

1.0 Operating and control elements ... 4

2.0 Functions at a glance ... 5

3.0 Description of appliance ... 6

3.1 Sensor positions, schematic diagrams ... 7

4.0 Main components and their functions ... 9

4.1 Electrical components and functions ... 9

4.1.1 General ... 9

4.1.2 Refrigerator-BioFresh compartment... 10

4.1.3 Freezer compartment ... 12

4.2 Refrigeration components and functions ... 14

4.2.1 General ... 14

4.2.2 Refrigerator-BioFresh compartment... 14

4.2.3 Freezer compartment ... 14

4.2.4 Principle of operation of the refrigerating system ... 14

5.0 Assembly instructions / replacement of parts... 15

5.1 General ... 15

5.1.1 Electronic control panel ... 15

5.1.2 Electronic power module ... 16

5.1.3 Top soft stop mechanism ... 18

5.1.4 Top door hinge ... 19

5.1.5 Bottom soft stop mechanism ... 20

5.1.6 Bottom door hinge ... 21

5.1.7 Solenoid valve refrigeration circuit ... 23

5.2 Refrigerator compartment ... 24

5.2.1 Magnet for reed relay door recognition ... 24

5.2.2 Cable feedthrough in door ... 25

5.2.3 Disassembling the horizontal separating plate ... 25

5.2.4 BioFresh control panel ... 25

5.2.5 Disassembling the vertical separating plate ... 26

5.2.6 Refrigerator compartment air sensor/air flap ... 27

5.2.7 BioFreshPlus and BioFresh air sensor/air flap ... 27

5.2.8 Evaporator sensor ... 28

5.2.9 Fan ... 28

5.2.10Refrigerator compartment light ... 29

5.2.11BioFresh LED lighting ... 30

5.2.12BioFresh pull-out rails ... 31

5.3 Freezer compartment ... 32

5.3.1 Air sensor, evaporator module and fan module ... 32

5.3.2 Temperature fuse, evaporator sensor and defrost heater ... 33

5.3.3 Fan and reed PCB... 35

5.3.4 IceMaker ... 36

5.3.5 Double solenoid valve, IceMaker ... 37

6.0 Technical data ... 38

6.1 General ... 38

6.2 Refrigerator-BioFresh compartment... 38

6.3 Freezer compartment ... 39

7.0 Service menu ... 40

7.1 Brief survey of service menu ... 41

7.2 Manual defrosting ... 43

7.3 Demo mode ... 44

7.4 Panel test ... 45

7.5 Sensor test (display of temperature) and door contact test ... 46

7.5.1 Refrigerator-freezer compartment ’ ... 47

7.5.2 IceMaker r ... 48

7.6 Service mode ... 49

7.6.1 Refrigerator-freezer compartment ’ ... 50

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7.6.2 IceMaker r ... 51

7.6.3 Water intake valve n ... 52

7.7 Hardware / software version ... 52

8.0 Error code, troubleshooting ... 53

8.1 Table of error codes ... 53

8.2 Troubleshooting VCC compressor/inverter ... 53

8.2.1 Inverter test/frequency signal with diagnostic LED ... 53

8.2.2 Checking the inverter and the frequency signal ... 54

8.2.3 Checking the compressor ... 55

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1.0 Operating and control elements

Operating/control elements

1 Temperature display refrigerator compartment 2 Temperature display freezer compartment 3 OK button

4 Left button 5 Down button 6 Right button 7 Up button

Operating/control elements 1 0°C button

2 Temperature display BioFreshPlus 3 -2°C button

4 6°C button 1

2

3

4 A

5

6 7 A

1 2 3 4

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2.0 Functions at a glance

Control: Electronic

Temperature display:

Refrigerator compartment: Actual value

BioFreshPlus: Set value

Freezer compartment: Actual value

Temperature range:

Refrigerator compartment: +2°C to +9°C BioFreshPlus: +6°C / 0°C / -2°C Freezer compartment: -16°C to -26°C

Temperature alarm:

Refrigerator compartment: Not present BioFresh compartment: Not present Freezer compartment: Visual, audible

Door alarm: Refrigerator compartment: Visual, audible Freezer compartment: Visual, audible

Fan: Refrigerator compartment: Present

Freezer compartment: Present

Defrosting: Refrigerator compartment: Automatic Freezer compartment: Automatic

Interior light:

Refrigerator compartment: Present BioFresh compartment: Present Freezer compartment: Not present

Service menu: Present

Compressor: CBNes: Standard

CBNPes: VCC, frequency-controlled

Solenoid valve

refrigeration circuit: Present

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3.0 Description of appliance

The CBN(P)es ..67 is a combined fridge-freezer with BioFresh/BioFreshPlus and NoFrost with IceMaker. The refrigerator-BioFresh and freezer compartment evaporators are activated via a bi-stable solenoid valve. Both evaporators are connected in series (see 4.2.4 Schematic diagram: Refrigerating circuit). Therefore the refrigerator-BioFresh compartment can be operated only in conjunction with the freezer compartment. However, it is possible to operate the freezer compartment on its own.

The refrigerator compartment and BioFresh compartment are cooled using a foamed-in evaporator. The evaporator is thermally sealed off by a foamed, vertical separating plate.

A DC fan is used for temperature balance between the refrigerator compartment, BioFreshPlus and BioFresh compartment. In conjunction with the air flap in each case, the fan provides for the supply of cold air needed. The fan is integrated in the vertical separating plate.

If the refrigerator, BioFreshPlus or BioFresh compartment needs cooling (detection by the respective air sensor), the fan is switched on and the associated air flap is opened. The fan takes in the warm air from the front and blows it down past the evaporator.

When it is sufficiently cold in one of the compartments, the respective air flap is closed. The compressor and the fan continue running only until such time as the other compartments have reached the switch-off value and the air flaps close.

The freezer compartment is equipped with a NoFrost rear wall evaporator module, fan module, air sensor and evaporator sensor. The defrosting phases are initiated by way of the electronic control system, taking compressor running time and door openings into account. There is an automatic IceMaker in the freezer compartment.

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3.1 Sensor positions, schematic diagrams

Fig. 3.1 / 2 Fig. 3.1 / 1

Refrigerator compartment air

sensor

Evaporator sensor

Ambient air sensor Evaporator sensor

Air sensor BioFreshPlus air

sensor

BioFresh air sensor

BioFreshPlus heater

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Fig. 3.1 / 4 Fig. 3.1 / 3

Lamellar evaporator Fan

Fan

Foamed-in rear wall evaporator

Air flaps

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4.0 Main components and their functions

4.1 Electrical components and functions 4.1.1 General

Electronic system

Type: Series 7 electronic control system Components: Display and power module Compressor

Type: CBNes: Standard

CBNPes: VCC, frequency-controlled

Function: ON: Refrigerator compartment evaporator sensor switch-on value (equal to or warmer than +5°C) and

refrigerator compartment, BioFreshPlus or BioFresh air sensor switch-on value

or

Freezer compartment air sensor switch-on value Note: On-delay time (8 minutes) must have elapsed.

OFF: Refrigerator compartment, BioFreshPlus and BioFresh air sensor

switch-off value and

freezer compartment air sensor switch-off value CBNPes:

 Compressor with various speed steps.

 The compressor is controlled using an inverter. The inverter electronic module is installed directly on the compressor.

 The speed steps and compressor switch-off are controlled by the inverter using a corresponding frequency signal (pulse-width modulated square-wave voltage on a separate signal line).

Note: If the frequency signal is interrupted, the compressor continues to run on a predetermined speed step!

 Runtime longer than 70 minutes:

Speed increase by one step during compressor operation.

 Runtime shorter than 60 minutes:

Speed reduction on next start-up.

For function test, see section 7.6:

Service mode

For troubleshooting, see section 8.2:

Troubleshooting VCC compressor / inverter Solenoid valve refrigeration circuit

Type: Bistable

Function: Changeover between REFRIGERATOR-BIOFRESH COMPARTMENT + FREEZER COMPARTMENT to FREEZER COMPARTMENT only

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4.1.2 Refrigerator-BioFresh compartment

Setting range: Refrigerator compartment: +2°C to +9°C

BioFreshPlus: +6°C / 0°C / -2°C , U0 to U9 (U0: coldest setting) BioFresh compartment: b0 to b9 (b0: coldest setting; 0.8K per step) Display range: 2°C to 49°C (actual value display)

temperatures equal to and lower than +2°C are displayed with 2°C.

Functions

SuperCool: ON: Refrigerator compartment sets itself to +2°C for 6 hours. BioFresh temperature remains

unchanged.

OFF: The refrigerator compartment sets itself to the set value.

Holiday mode: ON: Press button for 3 seconds. Refrigerator compartment sets itself to +15°C.

OFF: The refrigerator compartment sets itself to the set value.

Info: Remove all the food from the refrigerator compartment. This function prevents odour while the refrigerator compartment door is closed.

Defrosting: - Automatic when solenoid valve is at the B setting "freezer compartment only".

- Automatic during compressor standstill phase.

Door alarm: When: When the door has been open for 60 seconds.

Audible: 3 beeps.

Sensors Refrigerator compartment air sensor:

Position: Behind refrigerator compartment air flap cover.

Function: - Compressor ON/OFF - Solenoid valve position A/B

- Fan ON. (Condition: Evaporator sensor is 1K colder) - Refrigerator compartment air flap open/closed.

- Generates the display value.

Evaporator sensor: Position: In sensor holder on compartment liner rear wall.

Function: - Fan ON enable. (During start-up from +8°C and colder;

in operation from +4.8°C and colder)

- Compressor ON enable (from +5°C and warmer).

- Solenoid valve position A enable (from +5°C and warmer).

- Ends the defrosting phase (from +5°C and warmer).

BioFreshPlus air sensor:

Position: Behind BioFreshPlus air flap cover.

Function: - Compressor ON/OFF - Solenoid valve position A/B - Fan ON.

(Condition: Evaporator sensor is 1K colder) - BioFreshPlus air flap open/closed.

BioFresh air sensor:

Position: Behind BioFresh air flap cover.

Function: - Compressor ON/OFF - Solenoid valve position A/B - Fan ON.

(Condition: Evaporator sensor is 1K colder) - BioFresh air flap open/closed.

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Ambient air sensor: Position: On the power PCB.

Function: Affects the switch-off value of the BioFresh air sensor. Therefore temperature fluctuations in the BioFresh compartment are minimised.

Info: An ambient air sensor error is displayed only in the

service menu. In case of fault, the switch-off value of the BioFresh air sensor is not affected.

In case of a defect the power PCB has to be replaced.

Switch

Door switch: Position: In the door panel at the top.

Type: Reed PCB Contact type: Make contact Function: Activation via:

Magnet behind front panel, magnet is replaceable.

Switching signal when:

door closed: fan ON

interior light OFF

door open: fan OFF

interior light ON

door alarm ON after 60 seconds Loads

Fan: Position: Centre of liner ceiling, behind vertical separating plate.

Function:

Refrigeration refrigerator compartment ON: Compressor ON and solenoid valve setting A

Refrigeration refrigerator compartment OFF: - Compressor OFF or - Compressor ON and solenoid valve setting B.

Control: Low speed 6V/DC High speed 9V/DC

During start-up the fan switches ON only from +8°C at the evaporator sensor.

BioFreshPlus heater: Position: Foamed-in, inside right and left, directly above the pull-out rail for BioFreshPlus.

Function: Switches ON as soon as the BioFreshPlus air sensor has reached the switch-on value for the heater.

Refrigerator

compartment interior light:

Position: Inside right and left.

Function: - Shines as soon as the door is opened.

- Is switched OFF after the door has been open for 15 minutes.

Refrigeration refrigerator

compartment Door Fan

OFF CLOSE

D

ON low speed

ON CLOSE

D

ON high speed

ON/OFF OPEN OFF

Evaporator sensor from +5°C and warmer

CLOSE

D OFF

e.g. if the refrigeration is OFF and the door is CLOSED and the evaporator sensor is colder than +5°C, then the fan is ON, low speed.

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Page 12/55 BioFresh compartment

interior light:

Position: Inside left.

Function: - Shines as soon as the door is opened.

- Is switched OFF after the door has been open for 15 minutes.

4.1.3 Freezer compartment

Setting range: -16°C to -26°C

Display range: 0°C to -50°C (actual value display)

Values outside the range are indicated by a crossbar.

Functions

Temperature alarm: Alarm value: 4K warmer than set value.

SuperFrost alarm value: -14°C.

Delay: 20 minutes

Visual: Flashing temperature display.

Audible: 4 beeps.

During start-up: The temperature display flashes until the switch-off value is reached, the audible alarm is switched OFF.

(e.g. at a set value of -18°C, a temperature of –14°C has to be present for at least 20 minutes, then a temperature alarm is raised.)

When the defrosting phase begins, the temperature alarm is suppressed for 1.5hrs.

Defrosting: ON: - During start-up after 6 hours cumulative compressor running time.

- After a cumulative compressor running time of 6 to 60 hours maximum, depending on the number/duration of the door openings.

When the defrosting phase begins, the compressor and the fan are switched OFF and the defrost heater is switched ON.

Duration: The defrost heater remains switched ON until

- the freezer compartment evaporator sensor has reached +5°C or - a max. defrosting time of 50 minutes has been reached.

Info: After the end of the heating phase the compressor is switched ON with a 10-minute delay.

If the SuperFrost function is activated during the defrosting phase, this will not interrupt defrosting.

Door alarm: When: When the door has been open for 60 seconds.

Audible: 3 beeps.

SuperFrost: ON: Freezer compartment sets itself to -38

°C (quantity-controlled, min. 30 hrs., max. 65 hrs.)

The appliance sets itself to -38°C for at least 30 hours. In the following 35 hours cooling by 8K to the set value must have been reached or a total time of 65 hours must have elapsed in order that SuperFrost is automatically ended.

OFF: The freezer compartment sets itself to the set value.

Note: If SuperFrost is actuated during a defrosting phase, the SuperFrost function is not performed before the defrosting phase has run.

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Sensors

Air sensor: Position: Clipped into the sensor holder in the air duct panel.

Function: - Compressor ON/OFF.

- Fan ON/OFF.

- Generates the display value.

Evaporator sensor: Position: Slipped into lamellar evaporator.

Function: - Compressor ON enable (from +5°C and warmer) - Fan ON enable.

- Ends the defrosting phase.

Switch

Door switch: Position: In fan casing.

Type: Reed PCB Contact type: Make contact Function: Activation via:

Magnet on the door interior, magnet is replaceable.

Switching signal when:

door closed: fan ON

door open: fan OFF

door alarm ON after 60 seconds Loads

Fan: Position: Top centre of freezer compartment.

Function: ON: - compressor ON and

- freezer compartment door closed and - evaporator sensor switch-on value reached.

Switch-on value evaporator sensor:

a) during start-up / after defrosting phase: -25°C.

b) in normal operation 2K colder than freezer compartment air sensor.

OFF: - compressor OFF or

- Special case: The refrigerator compartment air sensor is too warm and the freezer compartment air sensor is at least 2K colder than the switch-off value. There is therefore more power available for the refrigerator compartment!

Defrost heater: Position: Clipped into lamellar evaporator.

Function: Keeps the lamellar evaporator free from ice.

For activation, see: Functions Defrosting

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4.2 Refrigeration components and functions 4.2.1 General

Compressor

Compressor: CBNes: Standard

CBNPes: VCC, frequency-controlled Solenoid valve

Solenoid valve: Bistable

4.2.2 Refrigerator-BioFresh compartment

Evaporator

Type: Rear wall evaporator

Type of installation: Foamed-in Injection point: Top centre Flow sequence: Top to bottom

4.2.3 Freezer compartment

Evaporator

Type: Lamellar evaporator

Type of installation: Freestanding between air duct panel and compartment liner.

Injection point: Top left on lamellar evaporator.

Flow sequence: From the top down and then up again.

4.2.4 Principle of operation of the refrigerating system

Condenser Refrigerator-BioFresh

compartment evaporator

Freezer compartment evaporator

Compressor Solenoid valve

Fig. 4.2.4

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5.0 Assembly instructions / replacement of parts

5.1 General

5.1.1 Electronic control panel

Panel: - On the right, press the panel against the appliance so that it swings out on the left and can be drawn forwards for removal.

Control panel: - Slide the control panel upwards and draw it forwards for removal.

Panel

Fig. 5.1.1 / 1

Illustration similar

Fig. 5.1.1 / 2

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5.1.2 Electronic power module

Note: Pull out the mains plug!

Electronic power module cover: - Disengage marked retaining clips.

- Swing out the cover at the bottom and lift for removal.

Cable clip: - Disengage the cable clip (transparent plastic clip) at the marked location.

- Detach front PCB edge connector - Release strain relief of supply cable.

- Disengage plug-in module at the right and left clip and draw it forwards for removal.

Fig. 5.1.2 / 1

Fig. 5.1.2 / 2

Strain relief

Fig. 5.1.2 / 3

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Plug-in module: - Detach rear PCB edge connector.

Electronic power module: - Disengage the locking hooks at the "holder for capacitors".

- Disengage electronic power module at the marked locations (Fig. 5.1.2/ 6).

Fig. 5.1.2 / 4

Fig. 5.1.2 / 5

Holder for capacitors

Fig. 5.1.2 / 6

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5.1.3 Top soft stop mechanism

Cover of front panel: Raise the cover sufficiently far that the pin can be pressed up and out (see Fig. 5.1.3/ 1).

Cover

Soft stop mechanism: Disengage cover of the soft stop mechanism at the marked locations (see Fig. 5.1.3/ 3).

Soft stop unit: Undo the screws fastening the soft stop unit (see Fig. 5.1.3/ 4).

Safety device

Soft stop unit: Fit the safety device for the soft stop unit.

Danger of crushing in the area indicated (see Fig. 5.1.3/ 5).

Fig. 5.1.3 / 2 Fig. 5.1.3 / 1

Fig. 5.1.3 / 3

Fig. 5.1.3 / 4

Fig. 5.1.3 / 5

!

Safety device for soft

stop mechanism

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5.1.4 Top door hinge

Turn hinge cover: Disengage the cover in the marked direction and raise it for removal (Fig. 5.1.4/ 1).

Door turn hinge: - Undo the marked screws and remove the door turn hinge (Fig. 5.1.4/ 2).

- Place the door turn hinge in the position shown (see Fig. 5.1.4/ 3), so that the holes for the template are in a line.

- Insert the template (see Fig. 5.1.4/ 3).

Soft stop

turn hinge: - Undo marked screws and remove soft stop turn hinge (Fig. 5.1.4/ 4).

Changing the door hinges: Remove the cover on the opposite side (Fig. 5.1.4/ 5) and transfer the door turn hinge and the soft stop turn hinge.

Fig. 5.1.4 / 1

Fig. 5.1.4 / 5 Fig. 5.1.4 / 6

Fig. 5.1.4 / 2

Template

Fig. 5.1.4 / 4 Fig. 5.1.4 / 3

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5.1.5 Bottom soft stop mechanism

Turn hinge cover: On the right-hand side, lever it off the turn hinge in a forward direction (Fig. 5.1.5/ 1), push the pin up and out (Fig. 5.1.5/ 2).

Cover

soft stop mechanism: Disengage cover of the soft stop mechanism at the marked locations (see Fig. 5.1.5/ 3).

Soft stop unit: Undo the screws fastening the soft stop unit (see Fig. 5.1.5/ 4).

Safety device

soft stop unit: Fit the safety device for the soft stop unit.

Danger of crushing in the area indicated (see Fig. 5.1.5/ 5).

Turn hinge cover

Hinge pin

Fig. 5.1.5 / 1 Fig. 5.1.5 / 2

Fig. 5.1.5 / 5

!

Safety device for soft

stop mechanism Fig. 5.1.5 / 3

Fig. 5.1.5 / 4

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5.1.6 Bottom door hinge

NOTE:

There are 2 different versions of the bottom door hinge, depending on the year in which the refrigerator was constructed

Door hinge up to about the end of 2011

Turn hinge cover

locking device: Disengage the cover in the marked direction and draw it forwards for removal (Fig. 5.1.6/ 1).

Bearing pin: Retract the adjustable foot and press the bearing pin downwards (Fig. 5.1.6/ 2).

Notch has to point forwards for re-assembly.

Changing the door hinges: Undo the screws (Fig. 5.1.6/ 3) and transfer the turn hinges.

Fig. 5.1.6/ 3 Turn hinge

Fig. 5.1.6/ 1 Turn hinge cover locking device

Fig. 5.1.6/ 2 Bearing pin Notch Bearing pin

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Page 22/55 Turn hinge from about the beginning of 2012

Bearing pin: Lift the bearing pin out oft he turn hinge (Abb. 5.1.6/ 4).

Turn hinge: Undo the screws and transfer the turn hinges (Abb. 5.1.6/ 5).

Changing the door hinges: Changing bearing pin, plug and turn hinges.

Abb. 5.1.6/ 4 Bearing pin Abb. 5.1.6/ 5 Turn hinge

Notch

Abb. 5.1.6/ 6 Bearing pin Plug

Bearing pin

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5.1.7 Solenoid valve refrigeration circuit

Solenoid valve - When detaching the capillaries, pay attention that they are properly re-connected.

Marking on solenoid valve cover:

KS : Capillary refrigerator compartment

GS : Capillary freezer compartment (marked with blue adhesive tape)

Refrigerator compartment

capillary Freezer

compartment capillary

Fig. 5.1.7

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5.2 Refrigerator compartment

5.2.1 Magnet for reed relay door recognition

Magnet: - Remove the cover of the front panel at the left and right (see Fig. 5.1.3/ 1 and 2).

- Disengage and remove the front panel (Fig. 5.2.1/ 1).

- Magnet is clipped into place at the rear (Fig. 5.2.1/ 3).

Reed contact : - Disengage cover of the soft stop mechanism at the marked locations (Fig. 5.2.1/ 4).

- Disengage reed PCB at the side (Fig. 5.2.1/ 6).

Fig. 5.2.1/ 1 Front panel

Bus cable, plug contact for door

Fig. 5.2.1/ 2 Front housing without cover

Magnet for reed relay

Fig. 5.2.1/ 3 Rear of front panel

Fig. 5.2.1/ 4 Cover of soft stop mechanism

Fig. 5.2.1/ 6 Reed PCB Fig. 5.2.1 / 5

Bus cable, plug contact for door Reed relay

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5.2.2 Cable feedthrough in door

 Detach bus connector from the reed PCB.

 Lever out the cable gland using a screwdriver.

 In case of door hinge changeover: - Transfer the bus cable feedthrough - Transfer the soft stop mechanism

5.2.3 Disassembling the horizontal separating plate

 Remove BioFresh drawers and insulation plate of BioFreshPlus.

 Remove cable duct panel (see Fig. 5.2.3/ 1)

 Disconnect and detach cable.

 Undo fastening screws (see Fig. 5.2.3/ 2)

 Pull out the separating plate forwards.

5.2.4 BioFresh control panel

 Remove cable duct panel, disconnect cable.

 Disengage control panel at marked retaining lugs.

Bus connector

Fig. 5.2.2 / 1

Bus cable feedthrough

Fig. 5.2.2 / 2

Horizontal separating plate

Cable duct panel

Fig. 5.2.3 / 1

Fig. 5.2.1 / 1

Fig. 5.2.3 / 2

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5.2.5 Disassembling the vertical separating plate

 Disassemble the horizontal separating plate (see 5.2.3 Disassembling the horizontal separating plate).

 Remove glass shelves.

 Using a screwdriver, disengage clips at the right and left at the marked location (Fig. 5.2.5/ 1) and press in the direction of the separating plate (Fig. 5.2.5/ 2). Remove clip.

 Undo screws (Fig. 5.2.5/ 4) fastening the separating plate.

 Disconnect fan cable (Fig. 5.2.5/ 5).

During assembly pay attention that the retaining lugs of the vertical separating plate are slipped into the grooves of the compartment liner for fixing the separating plate at the top.

Fig. 5.2.5 / 2 Fig. 5.2.5 / 3

Fig. 5.2.5 / 1 Holding clip

Fig. 5.2.5 / 5

Refrigerator compartment evaporator sensor

Fan connector

Fig. 5.2.5 / 4

Fastening screws

Fig. 5.2.5 / 7

Grooves in the compartment liner Fig. 5.2.5 / 6

Retaining lugs

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5.2.6 Refrigerator compartment air sensor/air flap

 Disengage cover of the refrigerator compartment air flap and raise it (Figs. 5.2.6/1 and 2).

 Refrigerator compartment air sensor is attached to the BioFreshPlus PCB in the horizontal separating plate.

 The refrigerator compartment air flap is only slipped into place, it is not interlocked or screw-fitted.

5.2.7 BioFreshPlus and BioFresh air sensor/air flap

 Disengage and remove cover of BioFresh air flaps (Fig. 5.2.7/1).

 BioFreshPlus and BioFresh air sensors are attached to the BioFreshPlus PCB in the horizontal separating plate.

 BioFresh air flaps are only slipped into place, they are not interlocked or screw-fitted.

Fig. 5.2.6 / 2

Fig. 5.2.6 / 3

Refrigerator compartment air flap

Refrigerator compartment air sensor Fig. 5.2.6 / 1

Cover of

refrigerator compartment air flap

Fig. 5.2.7 / 1 Fig. 5.2.7 / 2

BioFreshPlus air flap

BioFresh air flap BioFresh air sensor BioFreshPlus air sensor

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5.2.8 Evaporator sensor

 Disassemble the vertical separating plate, (see 5.2.5 Disassembling the vertical separating plate).

 Detach evaporator sensor holder.

 Refrigerator compartment evaporator sensor is attached to the BioFreshPlus PCB in the horizontal separating plate.

5.2.9 Fan

 Disassemble the vertical separating plate, (see 5.2.5 Disassembling the vertical separating plate).

 Disconnect fan.

 Use a screwdriver to press the fan from the rubber support at the marked locations (Fig. 5.2.9/ 1).

Note: The direction of installation (direction of air current) is indicated by an arrow.

The arrow (see Fig. 5.2.9/ 2) has to point in the direction of the compartment liner (rear wall of appliance).

Fig. 5.2.9 / 2 Fig. 5.2.8/1

Refrigerator compartment evaporator sensor

Fig. 5.2.9 / 1

Fan connector

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5.2.10 Refrigerator compartment light

LED light column: - Using a small screwdriver, turn the slot in the cap downwards.

- Insert a screwdriver in the slot and remove the cap.

- Undo screws of light column.

LED PCB: - Unlock and pull off connector (Fig. 5.2.10/ 3).

- Unlock PCB and connector socket at the marked locations (Fig. 5.2.10/ 4).

- Lift PCB at an angle from the light cover.

INFO One LED group comprising 3 LEDs is used for each illuminated support rib.

If a single LED of an LED group is defective, the entire LED group is inoperative.

All the other LEDs continue to shine.

Fig. 5.2.10 / 1 Cap

Fig. 5.2.10 / 2

Fig. 5.2.10 / 4 Fig. 5.2.10 / 3

Connector

Fig. 5.2.10 / 5

LED groups per support rib

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5.2.11 BioFresh LED lighting

 Disengage light unit (Fig. 5.2.11/ 2).

 Unlock and pull off connector (Fig. 5.2.11/ 3).

 Disengage and remove LED PCB (Fig. 5.2.11/ 4).

Fig. 5.2.11 / 3

Fig. 5.2.11 / 2

Fig. 5.2.11 / 4

Unlocking connector Unlocking PCB

Fig. 5.2.11 / 1

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5.2.12 BioFresh pull-out rails

 Press in lock and press rail to the rear (Fig. 5.2.12/ 1).

 Support is replaceable (Fig. 5.2.12/ 3).

Fig. 5.2.12 / 2

Fig. 5.2.12 / 3 Fig. 5.2.12 / 1

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5.3 Freezer compartment

5.3.1 Air sensor, evaporator module and fan module

Air sensor: Engaged in sensor holder on air duct panel.

Evaporator module: - Clear the drawers and glass shelves in the freezer compartment.

- Disengage the air sensor.

- Undo the screws marked in Fig. 5.3.1/ 1and remove the rear wall.

- Raise and swing out the evaporator module in a forward direction.

Fan module: Undo the marked screws and expose the cable (see Fig. 5.3.1/ 3).

Fig. 5.3.1/ 1 Freezer compartment with air duct panel

Air sensor

Fig. 5.3.1/ 2 Swinging out the evaporator module

Fig. 5.3.1 / 3 Fan module

Air sensor

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5.3.2 Temperature fuse, evaporator sensor and defrost heater

Temperature fuse: - Feel for the position of the temperature fuse (see 1st step, Fig. 5.3.2/ 1) - Make an incision in the sheeting (see Fig. 5.3.2/ 2).

- Undo screw (see Fig. 5.3.2/ 3).

The temperature fuse has to be replaced separately using a conversion kit.

The conversion kit comprises: - 1 temperature fuse - 2 compression connectors - 2 shrink hoses

Note:

Always fit the compression connector to the red and blue lead of the temperature fuse.

The defrost heater is destroyed as soon as the white lead of the defrost heater is cut.

2nd step

Fig. 5.3.2/ 2 Making an incision in the sheeting

1st step

Fig. 5.3.2/ 1 Evaporator module

Temperature fuse

Cut

3rd step

Fig. 5.3.2/ 3 Temperature fuse

Undo screw

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Evaporator sensor: Raise evaporator module and swing it out in a forward direction . - Make incisions in the sheeting at the marked locations

(1st and 2nd step, see Fig. 5.3.2/ 4 and Fig. 5.3.2/ 5).

- Bend open the retaining lugs of the cover plate and remove it.

- Draw the evaporator sensor to the left, out of the lamellar evaporator.

Defrost heater: Is clipped into the evaporator fins. Can be replaced if defective.

1st step

Fig. 5.3.2/ 4 Making an incision in the sheeting

2nd step

Fig. 5.3.2/ 5 Cutting open the evaporator cover Fig. 5.3.2/ 6 Lamellar evaporator

Evaporator sensor Defrost heater

2nd step

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5.3.3 Fan and reed PCB

Reed PCB: - Disengage cover of the reed PCB (see Fig. 5.3.3/ 2).

- Disconnect reed PCB.

 Note the mounting direction of the reed PCB. Reed relay points forwards.

Fan: - Disconnect reed PCB.

- Extract cable from the fan module.

- Open clip for cable.

- Disconnect fan cable.

- Remove fan module.

- Detach fan blades.

- Remove fan from holder.

Fig. 5.3.3/ 1 Fan module with reed PCB Reed PCB

Fan module

Fig. 5.3.3/ 2 Reed PCB Cover

Reed PCB

Fig. 5.3.3 / 3 Fan

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5.3.4 IceMaker

 Disengage the IceMaker and draw it forwards for removal (see Fig. 5.3.4/ 1).

 Detach connector (see Fig. 5.3.4/ 2).

Fig. 5.3.4/ 2 Connector contact Fig. 5.3.4 / 1 Fan

(37)

5.3.5 Double solenoid valve, IceMaker

 Undo the screws fastening the condenser on the right-hand side.

 Undo the screw fastening the unit carrier (see Fig. 5.3.5/ 1).

 Lever open the plastic flap (see Fig. 5.3.5/ 1).

 Remove the cover of the electronic module.

 Detach the connector marked light blue (double solenoid valve) and attach it to the cable comb so that the connector cannot be drawn under the unit carrier as the double solenoid valve is pulled out

(see Fig. 5.3.5/ 2).

 Detach housing feedthrough of the water hose and make a hose loop so that the hose can be fed as the double solenoid valve is pulled out (see Fig. 5.3.5/ 3 and Fig. 5.3.5/ 4)

 Pull the double solenoid valve out of the unit carrier while feeding the water hose.

 Electrical connection, detach cable lugs (see Fig. 5.3.5/ 2).

 Undo the screw fitting of the water hose.

Note: Paper seal has to be replaced once the screw fitting has been undone!

Fig. 5.3.5 / 1

Plastic flap

Screw fastening the unit carrier

Fig. 5.3.5 / 2

Plug contact double solenoid

valve

Fig. 5.3.5 / 3

Housing feedthrough

Water hose

Fig. 5.3.5 / 4 Hose loop

Fig. 5.3.5 / 5

Electrical connection

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6.0 Technical data

6.1 General

Sensor values: Refrigerator compartment: Air and evaporator sensor

BioFreshPlus: Air sensor

BioFresh compartment: Air sensor

Freezer compartment: Air and evaporator sensor Temperature °C Resistance value kOhm

+35 3.1

+30 3.8

+25 4.7

+20 5.9

+15 7.3

+10 9.3

+5 11.9

0 15.3

-5 19.8

-10 25.9

-15 34.1

-20 45.3

-25 60.8

-30 82.3

-35 112.8

Solenoid valve refrigeration circuit:

Voltage: 230 volts/AC (50Hz) Resistance: 2.8 kOhm

6.2 Refrigerator-BioFresh compartment

Interior light: Refrigerator compartment:

Wattage: approx. 3 watts

Voltage: approx. 13 volts/DC, with LED lighting connected.

approx. 13 volts/DC, with LED lighting disconnected.

BioFresh compartment:

Wattage: approx. 1 watt

Voltage: approx. 13 volts/DC, with LED lighting connected.

approx. 13 volts/DC, with LED lighting disconnected.

Fan: Wattage: 1.6 watts

Voltage: 12 volts/DC

- 6V at low speed - 9V at high speed

Speed: 2300 rpm

Direction of rotation: left (viewed from the front onto the fitted fan) BioFreshPlus heater: Wattage: 7 watts

Voltage: 230 volts/AC Air flaps: Non-verifiable.

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6.3 Freezer compartment

Fan: Wattage: 1.9 watts

Voltage: 230 volts/AC

Speed: 2100 rpm

Defrost heater: Wattage: 163 watts Voltage: 230 volts/AC Temperature fuse: Tripping

temperature: +93°C (is defective after it has been tripped and has to be replaced)

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7.0 Service menu

The service menu may be used by service technicians only.

Activation of service menu: Press the "Right" + "Left" buttons simultaneously for about 5 seconds.

If the service menu is activated, then "MENU" flashes in the display.

Up

Down

Right Left

OK button

(41)

7.1 Brief survey of service menu

Service menu Menu Operati

on Submenu Operati

on Selection of functional part Manual defrosting



"Up" or "Down" button



H

^{1x OK} ^-- ^-- : Defrost heater ON Demo mode

DEMO

^{1x OK} ^{Demo ON}_{Demo OFF} ^{1x OK} Demo mode ON Demo mode OFF

Panel test

P

^{1x OK} 1x OK Press sensor buttons, door sensor

Sensor test

E

^{1x OK}



"Up" or "Down" button



,

^{1x OK}

""Up" /

"Down"

button

/

1

: Refrigerator compartment air sensor

2

: Refrigerator compartment evaporator sensor

3

: Freezer compartment air sensor

4

: Freezer compartment evaporator sensor

0

: BioFresh air sensor

6

: BioFreshPlus air sensor

7

: Ambient air sensor

A

: Refrigerator compartment door contact

b

: Freezer compartment door contact

r

^{1x OK}

""Up" /

"Down"

button

/

1

: IceMaker air sensor

A

: IceMaker container open/closed

n

^--

""Up" /

"Down"

button

/

Not assigned

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Service mode

L

^{1x OK}

,

^{1x OK}

0

: All OFF

1

: - Compressor ON:

(CBNP: Low speed) - Solenoid valve position B

2

: - Compressor ON:

(CBNP: High speed) Solenoid valve position A

3

: Freezer compartment fan ON

4

: Freezer compartment defrost heater ON

5

: Light ON

7

: Fan low speed

8

: Fan high speed

d

: BioFreshPlus heater ON

h

: Refrigerator compartment flap Open

L

: BioFreshPlus flap Open

n

: BioFresh flap Open

r

^{1x OK}

0

: All OFF

2 0

: All OFF

 OK button

2 1

: - Ice-cube tray emptying position

- 3 seconds water valve - ON/Off button IceMaker

3 0

: All OFF

 OK button

3 1

: - Ice-cube tray emptying position

- 25 seconds water valve

n

^{1x OK}

Up-/

"Down"

button

/

0

: All OFF

2 0

: All OFF

 OK button

2 1

: 10 seconds water valve ON

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7.2 Manual defrosting

Step Display Operation Display following

operation

Testing option / Info

Service menu start

1 Actual values

Press

"Right" and "Left"

simultaneously for 5 seconds

Hidden functions Service menu active

Manual defrosting

2 Hidden functions Select "

H

"

with Down button

"

H

" highlighted with selection bar

Manual defrosting selected

3 "

H

Confirm with OK button

Refrigerator

compartment: Actual value

Freezer compartment:

"

A

" flashes

Manual defrosting ON activated

Manual defrosting is ended by: - Switching appliance ON/OFF

- Automatic after the defrost parameters are reached

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7.3 Demo mode

operation

Start service menu -- Demo mode ON --

1 Actual values

Press

2 "

H

+5°C

Freezer compartment: - 18°C

Demo mode ON

Service menu active, Control panel test selected

3 "

P

Display is completely activated. (Therefore defective pixels can be identified)

Control panel test ON

4

Display is completely activated. (Therefore defective pixels can be identified)

Door open/closed and

press all buttons one after the other (each operation is confirmed by beep)

- Beep for 2 sec.

- appliance switches OFF

After the last button has been pressed, a beep sounds for 2 seconds, provided the test was successful.

End

Panel test cannot be ended in step 2, for example, it has to be performed in full.

Should a button/door contact be defective, no 2-second beep sounds and the appliance does not switch OFF.

The appliance then has to be unplugged and plugged back in again.

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7.5 Sensor test (display of temperature) and door contact test

operation

1 Actual values

Press

Sensor test and door contact test (sensor values without offset, appliance in control mode)

E

"

E

Service menu active, sensor test

operation

1 Actual values

Press

E

"

E

is selected

3 "

E

’

^selected

11  4

E

’

^selected Press OK button

’

1

+sensor temperature

Refrigerator compartment air sensor

5

1

+sensor temperature Press Down button

2

Refrigerator compartment evaporator sensor

6

2

3

Freezer

compartment air sensor

7

3

4

Freezer compartment evaporator sensor 8

4

0

+sensor

temperature BioFresh air sensor 9

0

6

+sensor

temperature

BioFreshPlus air sensor

10

6

7

+sensor

temperature Ambient air sensor

11

7 A

+door position

Refrigerator compartment door contact

(oP=door open, cL=door closed)

4  11

A

+door position Press Down button

b

+door position

Freezer

compartment door contact

(oP=door open, cL=door closed)

End

Press "Left button" once: Return to level 2: E /

’

Items:

’

,

r

,

n

selectable.

selectable.

Press "Left button" three times: Return to normal/control mode.

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7.5.2 IceMaker r

operation

1 Actual values

Press

E

"

E

is selected

3 "

E

’

^selected

4

E

’

E

r

selected

Sensor test mode -IceMaker-

6  5

E

r

selected Press OK button

r

1

Temperature sensor ice-cube tray

5  6

1 A

+drawer position Drawer IceMaker open/closed

End

selectable.

(49)

7.6 Service mode

operation

1 Actual values

Press

Service mode -- testing electric loads--

L

"

L

Service menu active, service mode is selected

3 "

operation

1 Actual values

Press

Service mode -- testing electric loads-- Power

input1)

L

"

L

3 "

L

’

^selected Service mode activated

15  4

L

’

^selected Press OK button

’

Freezer compartment defrost heater ON

163 watt s

9

4

selected Press "Down"

button

selected

Refrigerator compartment air flap open

--

(51)

14

h

button

L

selected

Refrigerator compartment air flap Closed, BioFreshPlus air flap Open

--

4  15

L

button

n

selected

BioFreshPlus air flap Closed, BioFresh air flap Open

--

End

selectable.

1) Power input = power input of the appliance in the respective testing step!

7.6.2 IceMaker r

operation

1 Actual values

Press

L

"

L

3 "

2 2 1

selected

- Ice-cube tray moves to emptying position and back

- 3 seconds activation water intake valve - Press ON/OFF button on IceMaker

8

2 3 0

5  9

3 3 1

selected

- Ice-cube tray moves to emptying position - 3 seconds activation water intake valve

3 "

L

’

6

0 2 0

5  7

2 2 1

selected 10 seconds activation water intake valve

Press

Query of hardware / software version

Version

"

Version

Service menu active, query of

hard/software version is selected

3 "

Version

9-digit number

(e.g. 6143 07800)

11-digit number

(e.g. 10100025-006)

Hardware/software version

9-digit number:

PCB number 11-digit number:

8.1 Table of error codes

Error code Defective component Emergency mode

F0 BioFresh air sensor Compressor 10 minutes ON and 25 minutes OFF.

F1 Refrigerator compartment air sensor Compressor 10 minutes ON and 25 minutes OFF.

F2 Refrigerator compartment evaporator

sensor Compressor 10 minutes ON and 25 minutes OFF.

F3 Freezer compartment air sensor Compressor continuous operation

F4 Freezer compartment evaporator

sensor Compressor continuous operation

F6 BioFreshPlus air sensor Compressor 10 minutes ON and 25 minutes OFF.

F7 Ambient air sensor Ambient temperature of +25°C is the default value

8.2 Troubleshooting VCC compressor/inverter

8.2.1 Inverter test/frequency signal with diagnostic LED

A green LED flashes through the light-permeable cover of the VCC inverter to indicate malfunction such as

- Inverter error - Compressor error

- Frequency cable/signal error

by different LED flash codes.

The meaning of the different flash codes:

1 flash (every 15 seconds.) No error

2 flashes (every 5 seconds) No frequency signal from PCB 3 flashes (every 5 seconds) Inverter error

4 flashes (every 5 seconds) Compressor error

The error codes have to be processed in succession. Once an error code has been processed, a new error code may re-appear.

Fig. 8.2.1/ 1 Inverter with diagnostic LED

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8.2.2 Checking the inverter and the frequency signal

Note: On-delay time must have elapsed

Attention: In case of interruption of the frequency signal, the compressor starts only after 90 seconds!!

Is the compressor

running?

Frequency signal faulty / not connected or power PCB faulty.

Connect appliance to a power meter.

Switch appliance ON.

Does the compressor

stay at a standstill?

Press SF

Inverter; power PCB and the frequency cable are OK.

see 8.2.3

Switch the appliance OFF

Inverter faulty

Frequency signal faulty / not connected or power PCB faulty.

Is the compressor running after 90

seconds?

Does the speed increase, higher power input?

No

Yes

No

Yes

No

Yes

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8.2.3 Checking the compressor

Fault profile: Compressor does not run (not even after a waiting time of 90 secs)

Select compressor ON in the service menu. If the compressor now starts there was probably an operator error. Otherwise proceed as described below.

At the inverter, line voltage (230V) must be applied between N and 1/C.

Pull off frequency signal connector (lilac) from the inverter, wait 90 secs.

Replace inverter electronic module.

If the compressor still does not run, replace the compressor.

Then replace the inverter back again.

Presumably operator error.

Check speed increase!

Is voltage applied to the

inverter?

Isthe compressor

running?

Fault at cable connection / connector or power PCB.

Power PCB or inverter fault.

No

Yes

No

Yes

No Is the compressor

running?

Service Documentation