Service Documentation

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Service Documentation

Service Manual No. 09/2015 LWL/KDT-mom/18.05.16

After Sales Service International

Appliance Documentation

EK(P)c / IK(P)c 2554 EK(F)Pc / IK(F)Pc 2854

from Index 20A / Version 009, 010 Premium, A++ (P models with A+++)

With LED interior light

Built-in appliances with décor panel / for integrated use with 4-star compartment (F models equipped with bottle basket)

EKPc 2554 IKFPc 2854

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Contents

1.0 Operating and control elements ... 3

1.1 EK(P)c, IK(P)c 2554 ... 3

1.2 EK(F)Pc, IK(F)Pc 2854 ... 3

2.0 Functions at a glance ... 4

3.0 Description of appliance ... 5

3.1 EK(P)c, IK(P)c 2554 sensor positions, schematic diagrams ... 5

3.2 EK(F)Pc, IK(F)Pc 2854 sensor positions, schematic diagrams ... 6

4.0 Main components and their functions ... 7

4.1 Electrical components and functions ... 7

4.1.1 General ... 7

4.1.2 Refrigerator compartment ... 7

4.2 Refrigeration components and functions ... 9

4.2.1 General ... 9

4.2.2 Refrigerator compartment ... 9

4.2.3 Freezer compartment ... 9

4.2.4 Principle of operation of the refrigerating system ... 9

5.0 Assembly instructions / Parts replacement ... 10

5.1 General ... 10

5.1.1 Electronics ... 10

5.1.2 Door mounting – top ... 12

5.1.3 Door mounting – bottom ... 13

5.1.4 Only IK(F)(P)c: SoftSystem ... 14

5.1.5 Door magnet ... 15

5.2 Refrigerator compartment ... 15

5.2.1 Refrigerator compartment air sensor ... 15

5.2.2 Evaporator sensor ... 16

5.2.3 Only EK(F)Pc and IK(F)Pc 2854: Fan ... 16

5.2.4 Refrigerator compartment light column ... 17

5.2.5 Only EKFPc 2854 and IKFPc 2854: Vegetable bin lighting ... 19

6.0 Technical Data ... 20

6.1 General ... 20

6.2 Refrigerator compartment ... 20

7.0 Service menu ... 21

7.1 Brief overview of service menu ... 21

7.2 Demo mode D ... 22

7.3 Panel test (control panel test) P... 23

7.4 Sensor test (display of temperature) and door contact test E- ... 24

7.5 Service mode L ... 25

8.0 Error code, troubleshooting ... 26

8.1 Table of error codes ... 26

8.2 VCC compressor Diagnostic LED ... 26

8.2.1 Activation of diagnostic LED ... 26

8.2.2 Diagnostic LED flash codes ... 26

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1.0 Operating and control elements

1.1 EK(P)c, IK(P)c 2554

Operating elements Control elements

1 ON/OFF ON/OFF button for refrigerator compartment

2 SuperCool SuperCool function

4 Up Setting button temperature warmer 5 Down Setting button temperature colder 6 Alarm Alarm OFF button for audible alarm

3 Temperature display 7 Customer menu activated 8 Demo mode activated 9 Child lock activated 10 SuperCool activated 11 Temperature display °C

1.2 EK(F)Pc, IK(F)Pc 2854

Operating elements Control elements

1 ON/OFF ON/OFF button for refrigerator compartment

2 SuperCool SuperCool function

4 Up Setting button temperature warmer 5 Down Setting button temperature colder 6 Alarm Alarm OFF button for audible alarm

3 Temperature display 7 Customer menu activated 8 Demo mode activated 9 Child lock activated 10 SuperCool activated 11 Temperature display °C 12 Ventilation ON/OFF button for fan 13 Fan activated

1 2 3 4

A

6 5

11

10 9

8

12 2 3 4

A

6 5

1

7

8

9

11

13 10 7

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2.0 Functions at a glance

Control: Electronics

Temperature display: Actual value Temperature range: +1 °C to +9 °C Temperature alarm: Not featured Door alarm: Visual and audible

Fan: .K(P)c 2554: Not featured

.K(F)Pc 2854: Featured

Defrosting: Refrigerator compartment: Automatic Freezer compartment: Manual Interior light: Featured

Service menu: Featured

Compressor: .Kc: Standard

.K(F)Pc: VCC, AC protocol

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3.0 Description of appliance

The EK(F)(P)c ..54 appliances are refrigerators with décor panel.

The IK(F)(P)c ..54 appliances are integrated refrigerators for door-on-door assembly.

The appliances feature a compressor and a foamed-in evaporator. Control is via an electronic control system with evaporator and air sensor. The display shows the actual value.

3.1 EK(P)c, IK(P)c 2554 sensor positions, schematic diagrams

Electronic control system

LED light column Foamed-in 4 star compartment evaporator

Fig. 3.1/ 1: EK(P)c 2554 Fig. 3.1/ 2: EK(P)c 2554

Air sensor Evaporator sensor

Compressor Foamed-in rear wall

evaporator

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3.2 EK(F)Pc, IK(F)Pc 2854 sensor positions, schematic diagrams

Fig. 3.2/ 1: IKFPc 2854

Evaporator sensor Electronic control

system Foamed-in 4 star compartment evaporator

Fan

Air sensor

LED vegetable bin lighting

Fig. 3.2/ 2: IKFPc 2854 Compressor

Foamed-in rear wall evaporator LED light column

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4.0 Main components and their functions

4.1 Electrical components and functions 4.1.1 General

Electronic control system

Type: Series 6 electronic control system Components: Control panel and power unit Compressor

Type: .Kc: Standard

Function: ON: Evaporator sensor switch-on value

Note: Switch-on delay time (8 minutes) must have elapsed.

OFF: Air sensor switch-off value

.K(F)Pc appliances: VCC compressor, AC protocol

 Compressor with various speed settings.

 The compressor is triggered via an inverter, the inverter electronics are mounted directly on the compressor. The inverter receives a control command from the appliance 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 commands are absent or not recognised, the compressor will continue to run at a pre-specified speed.

For function test, see chapter 7.5:

Service mode

For troubleshooting, see chapter 8.2:

VCC compressor diagnostic LED

4.1.2 Refrigerator compartment

Electronic control system

Setting range: +1°C to +9°C

Display range: +1°C to +49°C (actual value display)

Temperatures colder than/equal to +1°C are displayed as 1°C.

Functions

SuperCool: SuperCool ON:

Refrigerator compartment is set to +1°C for 12 hours.

.K(F)Pc: Inverter switches to highest speed setting until 1°C is reached.

SuperCool OFF:

The refrigerator compartment adjusts itself to the set target value.

Defrosting: - Automatic during compressor standstill phase.

- In the event of a colder target value setting (+1°C, +2°C, +3°C), the standstill phase of the compressor is extended every 12 hours (every 7½ hours on K(F)Pc 2854 from Index 20B).

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Door alarm: When: If the door is open after 60 seconds.

Audible: 3 beeps.

Sensors

Air sensor: Position: In the sensor holder on the right-hand side wall.

Function: - Switches the compressor OFF.

- Generates the display value.

Evaporator sensor: Position: Foamed-in behind the inner liner rear wall.

Function: - Switches the compressor ON.

- Ends the defrost phase.

Ambient sensor: Position: On the integral PCB.

Function: Reduces he compressor speed in the event of cooler ambient temperatures in order to achieve sufficient freezer compartment temperatures via the longer running time.

Switches

Door switch: Position: On the electronic control system, cannot be replaced separately.

Type: Magnetic field sensor Function: Activation via:

Magnet in the door. Magnet is foamed-in, not replaceable.

Switching signal when:

Door closed: Interior light OFF Door open: Interior light ON

Door alarm ON after 60 seconds.

Consumers / Loads

Interior light: Position: Inside left.

(Models with a bottle rack: Left and right inner side.) Function: - Lights up as soon as door is opened.

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

Vegetable bin lighting:

(Only models with a bottle rack)

Position: Inside left.

Function: - Lights up as soon as door is opened.

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

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4.2 Refrigeration components and functions 4.2.1 General

Compressor

Compressor: .Kc: Standard

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: Wrapped evaporator tube Type of installation: Foamed-in

Injection point: Rear

Flow sequence: Back to front

4.2.4 Principle of operation of the refrigerating system

Fig. 4.2.4

Compressor Condenser

Refrigerator compartment evaporator

4-star compartment evaporator

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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.

Fig. 5.1.1/ 3 (Fig. similar)

Control panel: - Unlock and pull off connector (see Fig. 5.1.1/ 5).

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 (Fig. 5.1.1/ 4).

- Unlock and pull off connector (Fig. 5.1.1/ 5).

- Disengage the PCB carrier cover (Fig. 5.1.1/ 6) - Disengage the power PCB (Fig. 5.1.1/ 7)

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

Fig. 5.1.1/ 7 (Fig. similar) Fig. 5.1.1/ 8 (Fig. similar)

Cover

PCB carrier

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5.1.2 Door mounting – top

Door hinge: - Loosen fastening screws (approx. 1 cm), do not unscrew completely (Fig. 5.1.2/ 1).

 Door hinge can be removed when screws are undone but still in place.

- After removing the (door) hinge, unscrew the fastening screws completely and slide the metal bracket upwards to remove (Fig. 5.1.2/ 2).

- Mount metal brackets for swapping door hinges on opposite sides and screw in screws, leaving 1 cm (Fig. 5.1.2/ 4).

- Fit (door) hinge and tighten screws.

Fig. 5.1.2/ 1 Fig. 5.1.2/ 2

Fig. 5.1.2/ 3 Fig. 5.1.2/ 4

Fastening screws

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5.1.3 Door mounting – bottom

Door hinge: - Remove cover

- Loosen fastening screws (approx. 1 cm), do not unscrew completely (Fig. 5.1.3/ 2).

 Door hinge can be removed when the screws are undone but still in place - After removing the (door) hinge, unscrew the fastening screws completely.

- Screw in the screws on the opposite side, leaving 1 cm (Fig. 5.1.5/ 3).

- Fit (door) hinge and tighten screws.

Fig. 5.1.3/ 1 Fig. 5.1.3/ 2

Fig. 5.1.3/ 3

Cover Fastening screws

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5.1.4 Only IK(F)(P)c: SoftSystem

Soft stop mechanism: - Lever off the soft stop mechanism with a screwdriver (Fig. 5.1.4/ 2).

- Unscrew the spherical head with an open-ended spanner or a Torx screwdriver (Fig. 5.1.4/ 3).

- Undo the screw on the hinge (Fig. 5.1.4/ 4).

Fig. 5.1.4/ 1 Fig. 5.1.4/ 2

Fig. 5.1.4/ 3 Fig. 5.1.4/ 4

Fig. 5.1.4/ 5 Clip

Ball studs

Soft stop mechanism Holder

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5.1.5 Door magnet

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

 The door magnet is not replaceable.

Fig. 5.1.5/ 1

5.2 Refrigerator compartment

5.2.1 Refrigerator compartment air sensor

Air sensor: Replace air sensor using the corresponding repair kit.

The repair instructions accompany the repair kit.

Fig. 5.2.1/ 1 Fig. 5.2.1/ 2

Door magnet

Air sensor holder after repair Air sensor holder

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5.2.2 Evaporator sensor

Evaporator sensor: The evaporator sensor is foamed-in as standard and must be replaced using the corresponding repair kit in case of defect.

The repair instructions accompany the repair kit.

Fig. 5.2.2/ 1 Fig. 5.2.2/ 2

5.2.3 Only EK(F)Pc and IK(F)Pc 2854: Fan

Fan: - Remove marked screws (Fig. 5.2.3/ 1).

- Disconnect fan.

- Disengage the fan cover locating lugs and remove the cover in a forward motion (Fig. 5.2.3/ 3).

- Pull the fan out of the housing in an upward direction.

Fig. 5.2.3/ 1 Fig. 5.2.3/ 2

Fig. 5.2.3/ 3 Fig. 5.2.3/ 4

Locating lugs

Position of the foamed-in evaporator sensor Position of the evaporator sensor after repair

Fan connector

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5.2.4 Refrigerator compartment light column

Light cover: - Press into the light cover locking mechanism with a screwdriver (Fig. 5.2.4/ 2).

- Push the light cover up (Fig. 5.2.4/ 3).

- Remove light cover.

- Disconnect the connector from the LED PCB (Fig. 5.2.4/ 4).

During assembly, ensure that the light cover is installed in the lower position.

Fig. 5.2.4/ 1 Fig. 5.2.4/ 2

Fig. 5.2.4/ 3 Fig. 5.2.4/ 4

LED PCB: - Disengage the LED PCB at the light cover on one side.

- Remove the LED PCB

Fig. 5.2.4/ 5: Light cover with LED PCB Locating lugs

1 2

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Retaining strip: - Starting at a corner, lever off the front side of the retaining strip.

- Remove retaining strip.

Fig. 5.2.4/ 6: Retaining strip Fig. 5.2.4/ 7

Fig. 5.2.4/ 8

Retaining strip

Light cover

LED PCB

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5.2.5 Only EKFPc 2854 and IKFPc 2854: Vegetable bin lighting

- Loosen the marked locks, top/bottom, of the light cover with a screwdriver.

- Remove the light cover.

- Disconnect plug from LED PCB.

Fig. 5.2.5/ 1 Fig. 5.2.5/ 2

Fig. 5.2.5/ 3 Fig. 5.2.5/ 4

- Starting at the corner, pull out the holder using pliers.

- Remove holder and carefully pull out connector.

Info:

LED PCB is not available separately, only with light cover!

Fig. 5.2.5/ 5 Fig. 5.2.5/ 6

Holder Light cover with

LED PCB 1

2

1

2

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6.0 Technical Data

6.1 General

Sensor values: 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

6.2 Refrigerator compartment

Fan:

(Only .K(F)Pc 2854)

Output: 8 watts

Voltage: 12 volts/DC Refrigerator compartment

light column:

Output: 6 watts

Voltage: 12 volts/DC Vegetable bin lighting:

(Only .KFPc 2854)

Output: 0.5 watts Voltage: 12 volts/DC

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7.0 Service menu

The service menu may only be used by service engineers.

.K(P)c 2554:

.K(F)Pc 2854:

Service menu activation: Press “ON/OFF” + “Up” simultaneously for approx. 5 seconds.

7.1 Brief overview of service menu

Activation Press “ON/OFF” + “Up” simultaneously for approx. 5 seconds

Service menu Menu Action Sub menu Action Selection of

functional part Demo mode

 Up or down button 

D ^{1x SC*} D1/D0 ^{1x SC} Demo Mode ON / OFF

Panel test (control

panel test) P ^{1x SC} P1 ^{1x SC} Press sensor buttons, door sensor

Sensor test E- ^{1x SC} Ed ^{1x SC}

 Up/Down

d1 : Refrigerator compartment air sensor

d2 : Refrigerator compartment evaporator sensor

dA : Refrigerator compartment door contact

Service mode L ^{1x SC} Ld ^{1x SC}

 Up/Down

d0 : All OFF

d1 : Compressor ON

Only .K(F)Pc: Low speed

d2 : Only .K(F)Pc: Compressor ON, high speed

d5 : Light ON

d7 : Only .K(F)Pc 2854: Fan ON

* SC=SuperCool

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7.2 Demo mode

D

Step Display Action Display following action Testing option / Info Start service menu --Demo mode ON--

1 Actual value

Press “ON/OFF” and

“Up” simultaneously for

5 seconds

D

^flashes Service menu active,

demo mode selected

2

D

^flashes Press “SuperCool” once

D1

^static Demo mode ON

selected 3

D1

^static Press “SuperCool” once Set target value and

“Demo” Demo mode ON Start service menu --Demo mode OFF--

1 Target value and “Demo”

Press “ON/OFF” and

“Up” simultaneously for

5 seconds

D

flashes and “Demo” Service menu active, demo mode selected

2

D

flashes and “Demo” Press “SuperCool” once

D0

static and “Demo” Demo mode OFF selected

3

D0

static and “Demo” Press “SuperCool” once Actual value Demo mode OFF In the display, the text “Demo” provides information of the activated demo mode.

Demo mode can be deactivated only via the service menu, not by OFF/ON or disconnection from the supply.

The required mode, demo or normal, is switched to as soon as “SuperCool” is pressed.

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7.3 Panel test (control panel test)

P

Step Display Action Display following action Testing option / Info Start service menu

1 Actual value

Press “ON/OFF” and “Up”

simultaneously for

5 seconds

D

^flashes Service menu active

Control panel test

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

2

D

^flashes Press “Up” once

P

^flashes Control panel test

selected

3

P

^flashes Press “SuperCool” once

P1

^static Control panel test

activated

4

P1

^static Press “SuperCool” once

z

All symbols / segments

Display elements / More symbols are displayed than are used by the respective electronic unit.

5

z

All symbols / segments

Door closed/open and press all buttons one after the other (each operation is confirmed by beep)

- Beep for 2 seconds - Appliance switches OFF

After the last button has been pressed, a 2-second beep sounds only if the test has been successful.

Termination

Control panel test cannot be terminated, e.g. in the 2nd step; 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.

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

E-

Step Display Action Display following action Testing option / Info Start service menu

1 Actual value

Press “ON/OFF” +

“Up” simultaneously

for 5 seconds

D

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

2

D

^flashes Press “Up” twice

E-

^flashes Sensor test mode

selected

3

E-

^flashes Press “SuperCool”

once

Ed

^static Sensor test mode

activated

4

Ed

^static Press “SuperCool”

once

d1

flashes alternately with

sensor temperature

Refrigerator compartment air sensor

5

d1

flashes alternately

with sensor temperature Press “Up” once

d2

flashes alternately with sensor temperature

Refrigerator compartment evaporator sensor

6

d2

flashes alternately

with sensor temperature Press “Up” once

dA

flashes alternately with

OP

^or

gL

Refrigerator compartment door contact (OP=door open,

gL=door closed)

Termination

Press “ON/OFF” once: Return to level 2 Ed. No further options can be selected for this appliance.

Press “ON/OFF” twice: Return to level 1 E-. Options: D, P, E-, L can be selected Press “ON/OFF” three times: Return to normal/control mode

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7.5 Service mode

L

Step Display Action Display following action Testing option / Info Start service menu

1 Actual value

Press “ON/OFF” +

“Up” simultaneously

for 5 seconds

D

Service mode

-- Testing electric loads -- Output

2

D

flashes Press “Up” three times

L

^flashes Service mode selected 3

L

^flashes Press “SuperCool”

once

Ld

^static Service mode activated

4

Ld

^static Press “SuperCool”

once

d0

^static All OFF, Electronics

active 1.2 W*

5

d0

^static Press “Up” once

d1

^static Compressor ON**

Only .K(F)Pc:

Low speed

--

6

d1

d2

^static Only .K(F)Pc:

Compressor ON**, high speed

--

7

d2

d5

^static ^{Light ON} ^{6 W*}

8

d5

d7

^static Only .K(F)Pc 2854:

Fan ON 8 W*

Termination

Press “ON/OFF” once: Return to level 2 Ld. No further options can be selected for this appliance.

Press “ON/OFF” twice: The appliance will carry out a reset.

All settings are returned to factory settings.

Return to normal/control mode.

* Values were determined using CLM1000 measuring device.

** May react with delay.

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8.0 Error code, troubleshooting

8.1 Table of error codes

Error code Defective component Emergency mode

Refrigeration ON Refrigeration OFF

F1

Refrigerator compartment

air sensor

30 min. 30 min.

F2

Refrigerator 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 command received (> 30 min.) Flashes three times 5 sec. Inverter error or break in coil

Flashes four times 5 sec. Compressor errors

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