icbn 3314 from -20

Service Documentation

Service Manual No. 16/2013 LHG/KDT-JH/11.02.13

/36 16201300SM_gb.docx

After Sales Service International

Appliance Documentation

ICBN 3314 from -20 Comfort, A++

with LED interior light

Integrated fridge-freezer with BioFresh, NoFrost

ICBN 3314

Service Manual No. 16/2013 ICBN 3314 from -20

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Contents

1.0 Operating and control elements ............................................................................................. 3 2.0 Functions at a glance .............................................................................................................. 3 3.0 Description of appliance ......................................................................................................... 4

3.1 Sensor positions, schematic diagrams ....................................................................................... 5 4.0 Main components and their functions ................................................................................... 6

4.1 Electrical components and functions .......................................................................................... 6 4.1.1 General .................................................................................................................................................. 6 4.1.2 Refrigerator BioFresh compartment ...................................................................................................... 7 4.1.3 Freezer compartment ............................................................................................................................ 9

4.2 Refrigeration components and functions .................................................................................. 11 4.2.1 General ................................................................................................................................................ 11 4.2.2 Refrigerator compartment ................................................................................................................... 11 4.2.3 Freezer compartment .......................................................................................................................... 11 4.2.4 Principle of operation of the refrigerating system ................................................................................ 12

5.0 Assembly instructions/Parts replacement ........................................................................... 13 5.1 General ................................................................................................................................... 13

5.1.1 Electronics ........................................................................................................................................... 13 5.1.2 Strain relief/Lid appliance top .............................................................................................................. 15 5.1.3 Door mounting - top ............................................................................................................................ 16 5.1.4 Door mounting - middle ....................................................................................................................... 17 5.1.5 Door mounting - bottom ...................................................................................................................... 18 5.1.6 Solenoid valve refrigeration circuit ...................................................................................................... 19

5.2 Refrigerator compartment ........................................................................................................ 20 5.2.1 Dismantling the horizontal separating plate ........................................................................................ 20 5.2.2 Removing the vertical separating plate ............................................................................................... 21 5.2.3 BioFresh air sensor ............................................................................................................................. 22 5.2.4 Refrigerator compartment air sensor .................................................................................................. 22 5.2.5 Evaporator sensor ............................................................................................................................... 23 5.2.6 Fan ...................................................................................................................................................... 24 5.2.7 Refrigerator compartment interior light................................................................................................ 25 5.2.8 BioFresh pull-out rails ......................................................................................................................... 26 5.2.9 Door magnet ........................................................................................................................................ 26

5.3 Freezer compartment .............................................................................................................. 27 5.3.1 Air sensor, evaporator module and fan module .................................................................................. 27 5.3.2 Temperature fuse, evaporator sensor and defrost heater .................................................................. 27 5.3.3 Fan and reed PCB............................................................................................................................... 28 5.3.4 Door magnet ........................................................................................................................................ 29

6.0 Technical Data ....................................................................................................................... 30 6.1 General ................................................................................................................................... 30 6.2 Refrigerator BioFresh compartment ......................................................................................... 30 6.3 Freezer compartment .............................................................................................................. 30

7.0 Service menu ......................................................................................................................... 31 7.1 Brief survey of service menu ................................................................................................... 31 7.2 Manual defrosting H ................................................................................................................. 32 7.3 Demo mode D .......................................................................................................................... 32 7.4 Panel test P .............................................................................................................................. 33 7.5 Sensor test (display of temperature) and door contact test E- .................................................. 34

7.5.1 Refrigerator/freezer compartment Ed ................................................................................................... 34 7.6 Service Mode L- ...................................................................................................................... 35

7.6.1 Refrigerator/freezer compartment Ld ................................................................................................... 35 8.0 Error code, troubleshooting ................................................................................................. 36

8.1 Table of error codes ................................................................................................................ 36 8.2 VCC compressor Diagnostic LED ............................................................................................ 36

8.2.1 Activation of diagnostic LED ............................................................................................................... 36 8.2.2 Diagnostic LED flash codes ................................................................................................................ 36


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1.0 Operating and control elements

Refrigerator BioFresh compartment Freezer compartment 1 ON/OFF ON/OFF button for refrigerator compartment 2 SuperCool SuperCool function 3 Up/Down Setting button temperature

5 Up/Down Setting button temperature 6 SuperFrost SuperFrost function 8 ON/OFF ON/OFF button for appliance

General 4 Temperature display 7 Alarm Alarm OFF button for audible alarm

2.0 Functions at a glance

Control: Electronics

Temperature display: Refrigerator compartment: set value Freezer compartment: set value

Temperature range: Refrigerator compartment: +3°C to +9°C Freezer compartment: -15°C to -26°C

Temperature alarm: Refrigerator compartment: not featured Freezer compartment: visual and audible

Door alarm: Refrigerator compartment: featured Freezer compartment: featured

Fan: Refrigerator compartment: featured Freezer compartment: featured

Defrosting: Refrigerator compartment: automatic Freezer compartment: automatic

Interior light: Refrigerator compartment: featured Freezer compartment: featured

Service menu: Featured

Compressor: VCC, AC protocol

3 1 2 4 5 6 7 8


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3.0 Description of appliance

The ICBN is an integrated BioFresh refrigerator with NoFrost freezer compartment. The appliance features a compressor. The refrigeration control of the refrigerator BioFresh evaporator and freezer evaporator is effected via a bi-stable solenoid valve. Both evaporators are connected in series (see diagram 4.2.4/ 1). Therefore the refrigerator compartment can be operated only in conjunction with the freezer compartment. However, it is possible to operate the freezer compartment on its own. Refrigerator and BioFresh compartment: Refrigerator compartment and BioFresh compartment are cooled by a common evaporator. The evaporator is held in place by foam and situated behind the rear wall of the liner and is thermally partitioned by an insulated, vertical separating plate. A DC fan is used for temperature adjustment between refrigerator compartment and BioFresh compartment. The fan is integrated in the vertical separating plate. If the refrigerator compartment requires cooling (detection by refrigerator compartment air sensor), the fan is switched ON. The fan takes in warm air from the front and blows it past the evaporator in a downward direction. The air, now cold, is conducted past the BioFresh safes upwards into the refrigerator compartment. When it is sufficiently cold in the refrigerator compartment, the fan is switched OFF. The compressor continues running and the BioFresh safes are statically cooled by the falling temperatures. The compressor continues to run and the solenoid valve is on setting A (cooling + freezing) until such time as the air in the BioFresh compartment is sufficiently cold (detection by BioFresh air sensor). Freezer compartment: The freezer compartment features a NoFrost rear wall evaporator module, fan module, air sensor and evaporator sensor. The temperature display and the cooling activation/deactivation are effected by the air sensor. The evaporator sensor is responsible for controlling the freezer compartment fan and the defrost function of the evaporator module.


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3.1 Sensor positions, schematic diagrams

Fig. 3.1/ 1 Fig. 3.1/ 2

Fan

Air sensor

Electronics

Air sensor

Evaporator sensor

Evaporator sensor

Fan

Lamellar evaporator

BioFresh air sensor

LED interior light

Rear wall evaporator


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4.0 Main components and their functions

4.1 Electrical components and functions

4.1.1 General

Electronics

Type: Series 4 electronic control system

Components: Control panel and power PCB

Compressor

Type: VCC, AC protocol

Function: ON: Refrigerator compartment evaporator sensor switch-on value or Freezer compartment air sensor switch-on value Note: Time delay between restart cycles (8 min.) must have elapsed.

OFF: Refrigerator compartment air sensor switch-off value and Freezer compartment air sensor switch-off value

Compressor with various speed settings.

The compressor is triggered via an inverter, the inverter electronics are mounted directly on the compressor. The inverter is controlled by the appliance's electronics.

Appropriate command signals in the AC protocol control the compressor speed settings and switch-off. These commands are sent cyclically depending on the type of command. Note: If command signals are absent or not recognised the compressor will continue running on a preset speed setting! Function test see chapter 7.6: Customer service mode

Troubleshooting see chapter 8.2: VCC compressor diagnostic LED

Solenoid valve refrigeration circuit

Type: Bi-stable

Function: Switch between A (refrigerator BioFresh compartment + freezer compartment) and B (freezer compartment)


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4.1.2 Refrigerator BioFresh compartment

Electronics

Setting range: +3°C to +9°C

BioFresh compartment: b1 to b9 (b1: coldest setting; 1.2K per step)

Functions

SuperCool: ON: Refrigerator compartment set to +3°C for 12 hours. Inverter switches to highest setting until 3°C is reached.

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

Defrosting: - Automatic if solenoid valve in position B "freezer compartment only". - Automatic during compressor standstill phase.

Door alarm When: If door is open after 60 sec.

Audible: 3 beeps.

Sensor

Refrigerator compartment air sensor:

Position: Behind vertical separating plate.

Function: - Switches the fan ON/OFF. - Generates the display value.

Evaporator sensor: Position: In foam in the evaporator rear wall.

Function: - Refrigerator compartment evaporator sensor or freezer compartment air sensor, switch the compressor ON. - Switches the solenoid valve to position A (cooling + freezing) - Enables fan ON on start-up, from +10°C. - Ends the defrosting phase.

BioFresh air sensor: Position: Under horizontal separating plate, clipped into vertical separating plate.

Function: - BioFresh air sensor and freezer compartment air sensor switch the compressor OFF. - Switches the solenoid valve to position B (freezing only)

Ambient air sensor: Position: On the power PCB.

Function: Affects the switch-off value of the BioFresh air sensor. This minimises temperature fluctuations in the BioFresh compartment.

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 must be replaced.


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Switch

Door switch: Position: In door panel at top.

Type: Magnetic field sensors

Function: Activated by: Magnet is set in foam in door, magnet is not interchangeable.

Switching signal when:

Door closed: Interior light OFF

Door open: Interior light ON Fan OFF Door alarm ON after 60 sec.

Consumers / loads

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

Function:

* Refrigerator compartment cooling ON: Compressor ON and solenoid valve position A. Fridge compartment cooling OFF: - Compressor OFF or - Compressor ON and solenoid valve position B.

During start-up the fan only switches ON from +10°C on the evaporator sensor.

Refrigerator compartment interior light:

Position: Inside left.

Function: - Lights up as soon as door is opened. - Is switched OFF after door has been open for 15 minutes.

Refrigerator compartment air

sensor

Refrigeration compartment

cooling capacity* Door Fan

Switch-on value (refrigerator

compartment warm) OFF CLOSED ON


compartment warm) ON CLOSED ON


compartment warm) ON/OFF OPEN OFF

Switch-off value (refrigerator

compartment cold) ON/OFF

CLOSED/OPEN

OFF

e.g. if the refrigerator compartment air sensor is warm, i.e. fan switch-on value is reached, and cooling of the refrigerator compartment is ON and the door is closed, then the fan is ON.


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4.1.3 Freezer compartment

Electronics

Setting range: -15°C to -26°C

Functions

Temperature alarm: Alarm value: 6K higher than set value.

SuperFrost alarm value: -10°C.

Delay: 60 minutes

Optical: Flashing temperature display.

Audible: 4 beeps.

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

With a set value of -18°C, there must be a temperature of -12°C for at least 60 minutes, then a temperature alarm is raised.

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

Defrosting: ON: - During start-up after 10 hours cumulative compressor running time. - After a cumulative compressor running time of 10 to maximum 60 hours, 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 +8°C or - a max. defrosting time of 40 minutes has been reached.

Info: After the end of the heating phase, there is a three-minute delay before the compressor is switched on. If the SuperFrost function is activated during the defrosting phase this will not interrupt defrosting.

Door alarm: When: If door is open after 60 sec.

Audible: 3 beeps.

SuperFrost: ON: Freezer compartment sets itself to -32°C (quantity-controlled, 50 hours minimum, 65 hours maximum)

The appliance sets itself to -32°C for at least 50 hours. In the following 15 hours cooling by 11K to the set temperature must be achieved or a total period of 65 hours have elapsed for SuperFrost to be terminated automatically.

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

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


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Sensor

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

Function: - Freezer compartment air sensor or refrigerator compartment evaporator sensor, switch the compressor ON. - Freezer compartment air sensor and BioFresh air sensor, switch the compressor OFF. - Switches the fan OFF. - Generates the display value.

Evaporator sensor: Position: Slipped into lamellar evaporator.

Function: - Switches the freezer compartment fan ON. - On start-up or after defrosting enables fan to be switched ON, above -25°C. - Ends the defrosting phase.

Switch

Door switch: Position: In fan housing.

Type: Reed PCB

Contact type: Make contact

Function: Activated by: Magnet is set in foam in door, magnet is not interchangeable.

Switching signal when:

Door closed: Interior light OFF

Door open: Interior light ON Fan OFF Door alarm ON after 60 seconds

Consumers / 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) On start-up / after defrost phase: -25°C. b) During normal operation 2K colder than freezer compartment air sensor.

OFF: - Compressor OFF or - Exception: 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 ice-free. For activation, see: Defrosting


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4.2 Refrigeration components and functions

4.2.1 General

Compressor

Compressor: VCC, AC protocol

Solenoid valve

Solenoid valve: Bi-stable

Function: Switch over between A (refrigerator BioFresh compartment + freezer compartment) and B (freezer compartment)

Freezer compartment priority of 2 hours on start-up.

4.2.2 Refrigerator compartment

Evaporator

Type of appliance: Rear wall evaporator

Type of installation: Foamed-in

Injection point: Top centre

Flow sequence: See 4.2.4 Principle of operation of the refrigerating system

4.2.3 Freezer compartment

Evaporator

Type of appliance: Lamellar evaporator

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

Injection point: Top left on lamellar evaporator

Flow sequence: See 4.2.4 Principle of operation of the refrigerating system

Frame heater

Frame heater: Foamed-in in the housing, in the area of the freezer compartment magnetic door seal. (see Fig. 4.2.4/ 1)

Type: Fluid heater


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4.2.4 Principle of operation of the refrigerating system

Fig. 4.2.4/ 1

Compressor

Condenser

Refrigerator compartment evaporator

Freezer compartment evaporator

Solenoid valve

Freezer compartment frame heater

A B


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5.0 Assembly instructions/Parts replacement

5.1 General

5.1.1 Electronics

Covers: Disengage the covers on the marked locations.

Fig. 5.1.1/ 1 (Fig. similar) Fig. 5.1.1/ 2 Front panel: - Unlock locating lug of the front housing. - Draw the front panel forwards for removal.

Fig. 5.1.1/ 3 (Fig. similar) Control panel: - Unlock and pull off connector (see Fig. 5.1.1/ 4). Info: The control panel is an assembly unit comprising:

- Front panel - Control panel electronics - PCB carrier

This assembly unit cannot be further dismounted.

Fig. 5.1.1/ 4 (Fig. similar)

Disengage the connector

Disengage the PCB carrier


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Power PCB: - Disengage the PCB carrier and draw forwards for removal (see Fig. 5.1.1/ 5). - Unlock and pull off connector (see Fig. 5.1.1/ 6). - Disengage the cover PCB carrier (see Fig. 5.1.1/ 7) - Disengage the power PCB (see Fig. 5.1.1/ 8)

Fig. 5.1.1/ 5 (Fig. similar) Fig. 5.1.1/ 6 (Fig. similar)


Cover

PCB carrier


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5.1.2 Strain relief/Lid appliance top

- The leads are located in a cable duct in the top of the appliance.

Note: Mains cables are located in a separate cable duct! - Disengage the lid in the front first, Fig. 5.1.2/ 2.

Fig. 5.1.2/ 1 Fig. 5.1.2/ 2 - Swing the lid upwards to open.

Fig. 5.1.2/ 3 (Fig. similar) Fig. 5.1.2/ 4 (Fig. similar) During assembly, please ensure that the lid is first inserted at the rear before pressing it down.

Strain relief / lid

Cable clamps

Strain relief

Mains cables


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5.1.3 Door mounting - top

Top door hinges: - Remove cover.

- Loosen fastening screws (approx. 1cm), do not unscrew completely (Fig. 5.1.3/ 1). Door hinge can be removed when screws are loosened but still in place - After removing the (door) hinge unscrew the fastening screws completely and slide the metal bracket upwards to remove (Fig. 5.1.3/ 2). - Mount metal brackets for swapping door hinges on opposite sides and screw in screws, leaving 1cm (Fig. 5.1.3/ 3+4). - Fit (door) hinge and tighten screws.

Fig. 5.1.3/ 1 Fig. 5.1.3/ 2

Fig. 5.1.3/ 3 Fig. 5.1.3/ 4

Fastening screws


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5.1.4 Door mounting - middle

Mid door hinges: - Remove cover.

- Loosen fastening screws (approx. 1cm), do not unscrew completely. Door hinge can be removed when screws are loosened but still in place - After removing the (door) hinge unscrew the fastening screws completely. - On swapping the door hinges, screw in screws on opposite sides, leaving 1cm. - Fit (door) hinge and tighten screws.

Fig. 5.1.4/ 1 (Fig. similar)


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5.1.5 Door mounting - bottom

Lower door hinges: - Remove cover.

- Loosen fastening screws (approx. 1cm), do not unscrew completely. Door hinge can be removed when screws are loosened but still in place - After removing the (door) hinge unscrew the fastening screws completely. - On swapping the door hinges, screw in screws on opposite sides, leaving 1cm (Fig. 5.1.5/ 3). - Fit (door) hinge and tighten screws.


Fig. 5.1.5/ 3

Cover Fastening screws


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5.1.6 Solenoid valve refrigeration circuit

Solenoid valve When detaching the capillaries, ensure that these are later properly re-connected.

Marking on solenoid valve cover:

KS: Refrigerator compartment capillary tube GS: Freezer compartment capillary tube

Fig. 5.1.7/ 1

Refrigerator compartment capillary tube

Freezer compartment capillary tube


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5.2 Refrigerator compartment

5.2.1 Dismantling the horizontal separating plate

Horizontal separating plate: - Remove the BioFresh drawers.

(First raise it at the back, there will be some resistance to overcome, and then remove it in a forward direction).

- Pull out humidity control plate. - Pull out horizontal separating plate towards the front. (Separating plate is clicked in at the back. When pulling out some resistance must be overcome)

Fig. 5.2.1/ 1 Fig. 5.2.1/ 2

Fig. 5.2.1/ 3 Fig. 5.2.1/ 4 Fig. 5.2.1/ 5


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5.2.2 Removing the vertical separating plate

Vertical separating plate: - Dismantling the horizontal separating plate.

(see 5.2.1 Removing the horizontal separating plate). - Remove glass shelves. - Unclip the BioFresh air sensor. - Undo separating plate fastening screws (Fig. 5.2.2/ 2). - Using a screwdriver, unclip the holding clips on right and left where marked (Fig. 5.2.2/ 3) and press in the direction of the separating plate (Fig. 5.2.2/ 4). - Swing separating plate to right. - Pull out the refrigerator compartment air sensor and disconnect the fan cable.

Fig. 5.2.2/ 1 Fig. 5.2.2/ 2

Fig. 5.2.2/ 3 Fig. 5.2.2/ 4

Fig. 5.2.2/ 5 Fig. 5.2.2/ 6

Fastening screws

Retaining clip

BioFresh air sensor


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5.2.3 BioFresh air sensor

BioFresh air sensor: - Removing the horizontal separating plate

(see 5.2.1 Removing the horizontal separating plate). - Removing the vertical separating plate

(see 5.2.2 Removing the vertical separating plate). - Unclip the BioFresh air sensor from the holder.

Fig. 5.2.3/ 1

5.2.4 Refrigerator compartment air sensor

Refrigerator compartment air sensor: - Removing the horizontal separating plate


(see 5.2.2 Removing the vertical separating plate). - Remove the refrigerator compartment air sensor from the holder

Fig. 5.2.4/ 1 Fig. 5.2.4/ 2

Refrigerator compartment air sensor

BioFresh air sensor


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5.2.5 Evaporator sensor

Evaporator sensor: Evaporator sensors are per standard foamed-in and have to be replaced using the

corresponding repair kit in case of defect. Repair instructions accompany the repair kit.

Fig. 5.2.5/ 1 Fig. 5.2.5/ 2

Position foamed-in evaporator sensor

Position evaporator sensor after repair


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5.2.6 Fan

Fan: - Removing the horizontal separating plate


(see 5.2.2 Removing the vertical separating plate). - Unclip the absorber from the locating lugs. - Disconnect the connector. Remove the fan.

Fig. 5.2.6/ 1 Fig. 5.2.6/ 2

Fig. 5.2.6/ 3: View without fan Fig. 5.2.6/ 4 Note: The direction of installation (direction of air current) is indicated by an arrow. The arrow (see Fig. 5.2.6/ 2) must point in the direction of the compartment liner (rear wall of appliance).

Fan Absorber


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5.2.7 Refrigerator compartment interior light

Disconnect appliance from the mains supply, as 230V is applied to LEDs! LED light housing: - Insert screwdriver (size 1) into housing opening (Fig. 5.2.7/ 2). - Gently turn the screwdriver to loosen the lock. - Pull off the LED light housing. - Depress the connector lock and disconnect the connector (Fig. 5.2.7/ 4).

Fig. 5.2.7/ 1 Fig. 5.2.7/ 2

Fig. 5.2.7/ 3 Fig. 5.2.7/ 4 LED lighting unit: - Push in the locating lugs as shown in Fig. 5.2.7/ 5. - Swivel the LED PCB upwards. Holder: - Lever out the holder with the screwdriver at the marked points (Fig. 5.2.7/ 6).

Fig. 5.2.7/ 5 Fig. 5.2.7/ 6

Connector lock

LED lighting unit Holder

LED light housing


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5.2.8 BioFresh pull-out rails

Drawers: - Remove BioFresh drawers. First raise them at the back and then remove them in a forward direction. Pull-out rail: - Depress the lock and press the rail to the rear (Fig. 5.2.8/ 1).

- Support is replaceable (Fig. 5.2.8/ 3).

Fig. 5.2.8/ 1 Fig. 5.2.8/ 2

Fig. 5.2.8/ 3

5.2.9 Door magnet

Door magnet: - Door magnet is foamed in above the door seal in the top of the door.

Door magnet cannot be replaced!

Fig. 5.2.10/ 1

Door magnet


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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 Figure 5.3.1/ 1 and remove the rear wall. - Raise and swing out the evaporator module in a forward direction.

Fan module: Undo the marked screws und expose the cables (see Fig. 5.3.1/ 2).

Fig. 5.3.1/ 1 Freezer compartment with air duct panel Fig. 5.3.1/ 2 Fan module (Fig. similar)

5.3.2 Temperature fuse, evaporator sensor and defrost heater

Temperature fuse: The temperature fuse has to be replaced separately using a conversion kit. The conversion kit comprises: - 1 temperature fuse - 2 press fittings - 2 shrink tubes Attention: Always connect press fittings on blue leads of the temperature fuse. The defrost heater is destroyed as soon as the white lead of the defrost heater is cut.

Evaporator sensor: - Remove cover plate by cutting through the adhesive tape right/left and bending up the holding tabs. - Pull out the evaporator sensor to the right, out of the lamellar evaporator.

Defrost heater: Clipped into the lamellar evaporator. Can be replaced if defective.

Fig. 5.3.2/ 1 Evaporator module Fig. 5.3.2/ 2 Cut through adhesive tape

Air sensor

Temperature fuse


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Fig. 5.3.2/ 3 Evaporator sensor, defrost heater

5.3.3 Fan and reed PCB

Reed PCB: - Remove the fan module (see Fig. 5.3.1/ 2) - Disengage the reed PCB cover (see Fig. 5.3.3/ 2). - Disconnect the reed PCB. Note the mounting direction of the reed PCB. Reed contact faces forward.

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 Fig. 5.3.3/ 2 Reed PCB

Fig. 5.3.3/ 3 Fan

Fan module

Reed PCB

Defrost heating

Evaporator sensor


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5.3.4 Door magnet

Door magnet: - Door magnet is foamed in at the top behind the door interior

Door magnet cannot be replaced!

Fig. 5.3.7/ 1

Door magnet


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6.0 Technical Data

6.1 General

Sensor values: Refrigerator compartment: Air, evaporator and BioFresh sensors Freezer compartment: Air and evaporator sensors

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 Volt/AC (50Hz) Resistance : 4.95 kOhm

6.2 Refrigerator BioFresh compartment

Refrigerator compartment interior light:

Wattage: approx. 2.9 Watt Voltage: approx. 230 Volt/AC

Fan: Output: 1.1 Watt Voltage: 12 Volt/DC (triggering voltage: 6 – 10V/DC)

6.3 Freezer compartment

Fan: Output: 1.5 Watt Voltage: 12 Volt/DC


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7.0 Service menu

The service menu may be used by service technicians only.

Service menu activation: Press "ON/OFF" + "Up" simultaneously for approx. 5 seconds (freezer compartment buttons) Once the service menu is activated, "MENU" flashes in the display.

7.1 Brief survey of service menu

Activation: Press "ON/OFF" + "Up" simultaneously for approx. 5 seconds (freezer compartment buttons)

Service menu Menu Operati

on Sub

menu Operation

Selection of functional part

Manual defrosting

U

p/D

ow

n

H 1x SF* H1 1x SF A : Manual defrosting active

Demo mode D 1x SF D1/D0 1x SF Demo Mode ON / OFF

Panel test (control panel test)

P 1x SF P1 1x SF Press sensor buttons, door sensor

Sensor test

E- 1x SF

Up

/Do

wn

Ed 1x SF

U

p/D

ow

n

d1 : Refrigerator compartment air sensor

d2 : Refrigerator compartment evaporator sensor

d3 : Freezer compartment air sensor

d4 : Freezer compartment evaporator sensor

d0 : BioFresh air sensor

d7 : Ambient air sensor

dA : Refrigerator compartment door contact

dB : Freezer compartment door contact

Service mode

L 1x SF

Up

/Do

wn

Ld 1x SF

U

p/D

ow

n

d0 : All OFF

d1 : Compressor ON, low speed; solenoid valve position B

d2 : Compressor ON, high speed; solenoid valve position A

d3 : Freezer compartment fan ON

d4 : Freezer compartment defrost heater ON

d5 : Refrigerator compartment light ON

d7 : Refrigerator compartment fan, speed 1**

* SF=SuperFrost *** The speed settings may vary.


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7.2 Manual defrosting H

Step Display Operation Display following operation

Testing option / Info

Service menu start

1 Set values

Press "ON/OFF" and "Up/Down" simultaneously for 5 seconds

H flashes Service menu active.

2 H flashes Press "SuperFrost" H1 static Manual defrosting selected

3 H1 static Press "SuperFrost"

Refrigerator compartment: set value Freezer compartment:

A static

Manual defrosting active

Manual defrosting ends automatically. Manual defrosting can be ended early by switching the freezer compartment off and then on again.

7.3 Demo mode D



Start service menu -- Demo mode ON --

1 Set value


H flashes Service menu active

2 H flashes Press "Up/Down" once D flashes Demo mode selected

3 D flashes Press "SuperFrost" once D1static Demo mode ON selected

4 D1static Press "SuperFrost" once Set value and "Demo"

Demo mode ON

Start service menu --Demo mode OFF--

1 Set value and "Demo"


D flashes and "Demo"

Service menu active Demo mode selected

2 D flashes and "Demo" Press "SuperFrost" once D0static and "Demo" Demo mode OFF selected

3 D0static and "Demo" Press "SuperFrost" once Set value Demo mode OFF

In the display, the text "Demo" provides the information of the activated demo mode. Demo mode can be deactivated only via the service menu, not by OFF/ON or disconnection from the power supply. Operation switches to the mode wanted, demo mode or normal mode, as soon as "SuperFrost" has been pressed.


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7.4 Panel test P



Service menu start

1 Set value



Panel test -- Test of sensor buttons, display elements, door sensor and beep --

2 H flashes Press "Up/Down" twice P flashes Panel test selected

3 P flashes Press "SuperFrost" once P1static Panel test activated

4 P1static Press "SuperFrost" once zzAll symbols / segments

Display elements/ More symbols are displayed than are used by the respective electronics!

5 zzAll symbols / segments

Doors closed/open and press all buttons in succession (each operation is confirmed by a beep)

- Beep for 2 seconds - Appliance switches OFF

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

End

Panel test cannot be terminated, e.g. in step 2, it has to be performed in full. Should a button/sensor be defective, there will be no 2-second beep and the appliance will not switch OFF. The appliance then has to be unplugged and plugged back in again. All settings are returned to factory settings. Return to normal/control mode.


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

7.5.1 Refrigerator/freezer compartment Ed



Service menu start

1 Set value



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

2 H flashes Press "Up/Down" three times E-flashes

Sensor test mode selected

3 E-flashes Press "SuperFrost" once Edstatic Sensor test mode activated

4 Edstatic Press "SuperFrost" once d1flashes alternately with sensor temperature

Refrigerator compartment air sensor

5 d1flashes alternately with sensor temperature

Press "Up/Down" once d2flashes alternately with sensor temperature

Refrigerator compartment evaporator sensor



Freezer compartment air sensor



Freezer compartment evaporator sensor



BioFresh compartment air sensor



Ambient air sensor


Press "Up/Down" once dAflashes alternately

with OP or gL

Refrigerator compartment door contact (OP=door open, gL=door closed)

11 dAflashes alternately with OP or gL

Press "Up/Down" once dBflashes alternately

with OP or gL

Freezer compartment door contact (OP=door open, gL=door closed)

End Press "ON/OFF" once: Return to level 2 Ed. Points: Ed can be selected. Press "ON/OFF" twice: Return to level 1 E-. Points: H.D.P.E-.L selectable Press "ON/OFF" three times: Return to normal/control mode.


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7.6 Service Mode L-

7.6.1 Refrigerator/freezer compartment Ld



Service menu start

1 Set value Press "ON/OFF" and "Up/Down" simultaneously for 5 seconds


Service mode -- Testing electrical loads --

Output

2 H flashes Press "Up/Down" four times L-flashes Service mode selected

3 L-flashes Press "SuperFrost" once Ldstatic Service mode activated

4 Ldstatic Press "SuperFrost" once d0static All OFF Electronics active

1.2 W*

5 d0static Press "Up/Down" once d1static

Compressor ON**, low speed; solenoid valve in position B

--

6 d1static Press "Up/Down" once d2static

Compressor ON**, high speed; solenoid valve in position A

--

7 d2static Press "Up/Down" once d3static Freezer compartment fan ON

3.3 W*

8 d3static Press "Up/Down" once d4static Freezer compartment heater ON

142 W*

9 d4static Press "Up/Down" once d5static Refrigerator compartment light ON

3.7 W*

10 d5static Press "Up/Down" once d7static Refrigerator compartment fan speed 1***

1.4 W*

11 d7static Press "Up/Down" once d8static Refrigerator compartment fan speed 2***

1.4 W*

End Press "ON/OFF" once: Return to level 2 Ld . Points: Ld selectable. Press "ON/OFF" twice: Return to level 1 L . Points: H.D.P.E-.L selectable Press "ON/OFF" three times: Return to normal/control mode.

* Values were determined using CLM1000 measuring device. ** May react with delay. *** The speed settings may vary.


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8.0 Error code, troubleshooting

8.1 Table of error codes

Error code Defective component Emergency mode

Appliance Refrigeration ON Refrigeration OFF

F0 BioFresh air sensor

ICBN 3314 52 min. 12 min.

F1 Refrigerator compartment air sensor

F2 Refrigerator compartment evaporator sensor

F3 Freezer compartment air sensor

F4 Freezer compartment evaporator sensor

8.2 VCC compressor Diagnostic LED

8.2.1 Activation of diagnostic LED

A green LED may flash through the light-permeable front cover of the VCC inverter.

The diagnostic LED is activated for 60 minutes (diagnosis period) after activating the service mode Ld. If a valid command is recognised, the LED flashes once. If no valid command is recognised, the LED flashes twice. As long as the inverter control does not detect an error and the diagnosis period is not active, no information will be issued via the diagnostic LED.

Fig. 8.2.1/ 1 Inverter with diagnostic LED "OFF" Fig. 8.2.1/ 2 Inverter with diagnostic LED "ON"

8.2.2 Diagnostic LED flash codes

Code Cycle Meaning

Flashes twice 5 sec. Invalid or no receipt of command (> 30 min.)

Flashes three times 5 sec. Inverter error or break in coil

Flashes four times 5 sec. Compressor error

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

icbn 3314 from -20

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