Teka RBF 78720 Bedienungsanleitung

Service Manual

MSFR19010 EN

(December 2019)

Related models:

RBF 78720

RBF 78630

RBF 74620

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 1 -

Contenido

1. Introduction.......................................................................................................... - 2 -

2. General description .............................................................................................. - 2 -

3. Control panel ........................................................................................................ - 3 -

4. General operation ................................................................................................ - 3 -

5. Service test ........................................................................................................... - 5 -

6. Error messages ..................................................................................................... - 6 -

7. Wiring diagram RBF 78630/74620 ....................................................................... - 8 -

8. Wiring diagram RBF 78720................................................................................... - 9 -

9. Refrigerant circuit............................................................................................... - 10 -

10. Components .................................................................................................... - 11 -

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 2 -

1. Introduction

This manual explains the general operation of the RBF range refrigerators, how to

enter the service mode and the meaning of the different error messages that could be

displayed.

2. General description

All the models in the RBF range are electronic no-frost refrigerators. The temperature

in each compartment can be adjusted independently, and there’s no air flowing from

one to the other.

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 3 -

3. Control panel

1. Refrigerator setting

2. Quick cooling mode indicator

3. Freezer setting

4. Quick freezing mode indicator

5. Alarm indicator

6. ECO mode indicator

7. Holiday mode indicator

8. Child lock indicator

9. Refrigerator Tª sensor

10. Freezer Tª sensor

11. “Mode”sensor

In order to set the temperature of a compartment, first, the sensor of that

compartment must be pressed to select it, and then, press it repeatedly until the

desired temperature is shown in the display. After a few seconds, the value is set in

memory.

4. General operation

The range of values that can be set for each compartment are:

-Refrigerator: 2ºC a 8ºC

-Freezer: -16ºC a - 24ºC

The compressor will be on until both compartments reach the target temperature. For

example, if the target temperature in the refrigerator is reached, but the temperature

in the freezer isn’t, the compressor goes on working and a heater element in the

refrigerator is turned on to prevent too low temperatures.

Operating modes

Super cooling mode: when selected, target temperature in refrigerator is set to 2ºC.

Super freezing mode: when selected, target temperature in refrigerator is set to -24ºC.

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 4 -

Holyday mode: when selected, the freezer is set to -18ºC and the refrigerator to +16ºC.

ECO mode: when selected, the control board will decide the internal parameters in

order to reduce consumption. The display will show “E”.

Drink cooling mode: when selected, it will be requiered to choose how long this mode

should be active. After that time, this mode will be turn off automatically..

Demo: in order to turn on the “DEMO” mode, within the first 60 seconds after plugging

the refrigerator, press simultaneously for 5 seconds the sensors “M” and “Freezer Set”.

Every 10 seconds “dE” – “On” will be displayed. This mode won’t be cancelled after a

black out. To cancel it, follow the same steps as to activate it.

First start

When the refrigerator is plugged to the power supply, if the defrost sensor is

measuring a temperature higher than -5ºC, the next steps are executed:

-The compressor and fan turn on for 5 seconds.

-The defrost element turns on for 5 seconds.

-The heater element in the refrigerator turns on for 5 seconds.

-Refrigerator’s fan turns on for 5 seconds.

After this sequence ends, the refrigerator stops for 5 minutes, and then will start to

work normally.

After a black out, settings are kept in memory, so they won’t be restored to factory

settings.

Freezer defrosting

Depending on the use of the refrigerator (quantity of food and liquids, door openings,

…), the defrosting cycle is turned on after a minimum of 8 hours, and a maximum of 55

hours. The defrost cycle ends when the defrost sensor reaches 8ºC. If it takes longer

that 37 minutes, the target temperature will be set to 15ºC.

Refrigerator defrosting

The defrosting cycle in the refrigerator turns on at the same time that the defrost cycle

in the freezer, unless the sensor does not detect +5ºC three times in 9 hours, having at

least 5 hours of compressor working time. The defrosting cycle ends when the sensor

measures +7ºC.

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 5 -

5. Service test

To enter de Service test, these steps must be followed:

-Press and keep pressed the Freezer Set sensor while open and close the

refrigerator’s door 3 times. After 3 seconds, the Service test is launched.

-If a component fails, an error message will be displayed in this moment.

Otherwise, nothing is displayed.

-While in Service test mode, there is a “beep” every 5 seconds.

-The Child lock LED will blink.

-The different functions can be accessed pressing the sensor “M”, according to the

table below.

Funciones modo servicio

TOUCHING M (MODE)

BUTTON ONCE

Starting mode:

- Eco icon blinks.

- The number of components which is controlled is shown at freezer

segments of display.

- Eco icon goes off when the starting test finishes and then display

returns to initial service mode..

TOUCHING M (MODE)

BUTTON TWICE

Manual Defrost:

-Holiday icon blinks.

-Defrost might be finished manually or automatically.

-Defrost might be finished manually by using the cooling set button.

Holiday icon goes off and display returns to initial service mode.

-Automatic defrost operates according to the standard defrost time.

-Holiday icon goes off when he when the manual defrost ends and

display returns to initial service mode.

TOUCHING M (MODE)

BUTTON 3 TIMES

Motor Damper control mode (only models with damper):

-Fast Cooling icon blinks.

-There is no function due to not having damper component in the

product.

-SC icons goes off and display returns to initial service mode.

TOUCHING M (MODE)

BUTTON 4 TIMES

Current temperature values indicator:

-Fast freezing icon blinks.

-Pressing the Freezer set sensor, current values will be displayed:

1 –Refrigerator’s sensor.

2 –Freezer’s sensor.

3 –Defrosting sensor.

4 –Ambient sensor (not available in these models)

5 –Refrigerator’s defrosting sensor

-Touching cooler set icon, function will be finished manually.

-Fast freezeng icon goes off and display returns to initial service

mode.

TOUCHING M (MODE)

BUTTON 5 TIME

Door switch control:

-No icons at display.

-Cooler set segment gives information about cooler door.

-Mode just could be deactivated by cooler set button.

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 6 -

6. Error messages

The table below shows the different error messages that can be displayed and their

meaning:

Mesg. In display

Mesg in service mode

Description

FE01

Failure in freezer sensor (1) (*)

FE02

Failure in refrigerator sensor (2) (*)

FE03

Failure in defrosting sensor (3) (*)

FE04

Failure in refrigerator’s defrosting sensor

(5) (*)

FF12

Failure in (1) y (2) (*)

FF13

Failure in (1) y (3) (*)

FF15

Failure in (1) y (5) (*)

FF23

Failure in (2) y (3) (*)

FF25

Failure in (2) y (5) (*)

FF35

Failure in (3) y (5) (*)

FH02

Failure in (1), (3) y (5) (*)

FH04

Failure in (1), (2) y (3) (*)

FH05

Failure in (1), (2) y (5) (*)

FH06

Failure in (2), (3) y (5) (*)

FU00

Failure in all the sensors(*)

FO05

Failure in compressor, (3) Temperature is

above -10ºC after 10 minutes working.

FO06

Failure in defrosting cycle. (3)

Temperature does not reach 0ºC

Muestra “-“ en ambos

displays

Low voltage. Voltage is under < 170 V.

Parpadea display

congelador y alarma

CO01

(1) does not drop below -10ºC (**)

Parpadea display

conservador y alarma

CO02

(2) is above 10ºC and Holiday mode is not

active. (**)

Parpadea display

conservador y alarma

CO03

Temperature too low in refrigerator. (2)

drops below -5ºC(**)

Parpadean ambos

displays y alarma

CO04

(2) is above 15ºC y (1) above -10ºC(**)

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 7 -

(*) If a failure in a sensor is displayed, follow the steps below:

- Check the wiring and conections between the sensor and de control board.

- Check the ohmic value of the sensor, and compare it with the table in section 8. If the

sensor is “open”(value ≈ ∞) or “short-circuited”(value ≈ 0Ω), it must be replaced.

- If the previous steps are correct, the control board must be replaced.

(**) In order to avoid fake alarms, error messages won’t be displayed under the

following conditions:

-Within 6 hours after plugging the appliance to the power supply.

-Within the defrost cycle.

-Within 2 hours after a defrost cycle.

-Within 2 hours after a door opening.

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 8 -

7. Wiring diagram RBF 78630/74620

Service Manual

RBF 78720/78630/74620

Service Manual: MSFR19010 EN - 9 -

8. Wiring diagram RBF 78720

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