Kuppersbusch KE 680-1-3T User manual

Refrigerator
KE 680-1-3T

Service Manual: H8-74-07
Responsible: U. Laarmann KÜPPERSBUSCH HAUSGERÄTE AG
E-mail: [e-mail]
Tel.: [phone] Customer Service
Fax: [phone] Postfach 100 132
Date: 24.08.2012 45801 Gelsenkirchen

Service Manual 3
For internal use only
Contents
1. Safety Instructions .........................................................................................................5
2. Repair Instructions.........................................................................................................6
3. Introduction.....................................................................................................................6
3.1 FIFTY TOTAL NO FROST combination appliance ...............................................6
3.2 Refrigerator ...........................................................................................................7
3.3 Assembly set.........................................................................................................8
4. The combination appliance at a glance........................................................................8
4.1 General partitioning...............................................................................................8
4.2 Internal partitioning................................................................................................9
4.3 Features ................................................................................................................9
5. Air flow .......................................................................................................................... 11
6. Cooling circuit ..............................................................................................................12
6.1 FIFTY TOTAL NO FROST combination appliance .............................................12
6.2 Refrigerator .........................................................................................................12
7. Electric system ............................................................................................................. 13
7.1 FIFTY TOTAL NO FROST combination appliance .............................................13
7.2 Refrigerator .........................................................................................................14
8. FIFTY TOTAL NO FROST combination appliance.....................................................15
8.1 Wine cooler .........................................................................................................15
8.2 Freezer................................................................................................................20
8.2.1 Freezer temperature probe .....................................................................21
8.2.2 Magnet for the freezer door switch..........................................................22
8.3 Refrigerator .........................................................................................................22
8.3.1 Electronic units........................................................................................23
9. Main functions ..............................................................................................................28
9.1 FIFTY TOTAL NO FROST combination appliance .............................................28
9.1.1 Normal function.......................................................................................28
9.1.2 Normal function when first switched on or after a power cut...................28
9.1.3 Defrosting................................................................................................29
9.1.4 Flow diagram for controlling the defrosting procedure............................30
9.1.5 QUICK FREEZE function........................................................................31
9.1.6 Switching off the wine cooler...................................................................31
9.1.7 Wine cooler temperature probe fault.......................................................31
9.1.8 Freezer temperature probe fault .............................................................32
9.2 Refrigerator .........................................................................................................33
9.2.1 Normal.....................................................................................................33
9.2.2 QUICK COOL function............................................................................34
9.2.3 HOLIDAY function (only for the refrigerator)...........................................34
9.2.4 Refrigerator temperature probe fault.......................................................34
10. Alarms ...........................................................................................................................36
10.1 Freezer temperature alarm..................................................................................36

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11. Accessibility..................................................................................................................37
11.1 FIFTY TOTAL NO FROST combination appliance..............................................37
11.1.1 Wine cooler .............................................................................................37
A Air volume control (damper)....................................................................37
B Control holder..........................................................................................38
11.2 Freezer ................................................................................................................39
11.2.1 Finned-type evaporator ...........................................................................39
12. Fault finding ..................................................................................................................42
12.1 Layer of ice on the battery too thick.....................................................................42
12.2 Appliance does not defrost..................................................................................42
13. Special functions
FIFTY TOTAL NO FROST combination appliance .....................................................43
13.0.1 Customer service programme.................................................................43
14. Display symbols ...........................................................................................................45
14.1 FIFTY TOTAL NO FROST combination appliance..............................................45
14.1.1 Wine cooler .............................................................................................45
14.1.2 Freezer....................................................................................................45
14.2 Refrigerator..........................................................................................................46

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1. Safety Instructions
Danger!
Repairs may only be carried out by a qualified electrician!
Improper repairs can be extremely dangerous for the user.
It is essential that you observe the following instructions in order to prevent electric shocks:
• The casing and the frame may be live in the event of faults!
• Touching live components inside the appliance may cause dangerous currents to flow through your
body!
• Disconnect the appliance from the mains prior to carrying out any repair work!
• When inspecting live parts, a residual current circuit breaker must always be used!
• Always ensure that an earthed conductor is properly connected! The ground wire resistance must not
exceed that specified in the standard! It is of vital importance for ensuring the safety of people and
the functioning of the appliance.
• On completion of repairs, an inspection must be carried out in accordance with VDE 0701
[Association of German Electrical Engineers] or the corresponding regulations for your country!
• Do not touch any of the components in the appliance. The modules are also live!
• Observe instructions on electrostatic hazards!
• Wear safety goggles and protective gloves when handling refrigerants. Rinse your eyes with a lot of
water if refrigerant splashes into them.
Make sure you observe the following instructions:
• The appliances must be disconnected from the mains prior to all repairs. If inspections must be
carried out on live appliances, make sure you use a residual current operated device.
Attention!
Sharp edges: Use protective gloves.
Components may be electrostatic!
Observe handling precautions!

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2. Repair Instructions
• Never attempt to carry out repairs by “randomly replacing” components!
• Always proceed systematically and observe the technical documentation that goes with the
appliance!
• Electronic circuit boards are generally not repaired; instead they are completely replaced with original
spare parts. Exceptions are documented separately.
• Pipe connections in cooling circuits are not to be soldered. Lokring connections are to be used.
• Carry out a leak test and a functional test on the cooling circuit.
• The dehumidifier is to be replaced before evacuation and filling during any intervention in the cooling
circuit.
• It is essential to replace the compressor and the dehumidifier when repair work resulting from suction
leaks in the cooling circuit is carried out. Humidity which gets into the cooling circuit will cause
irreparable damage to the oil in the compressor.
3. Introduction
This manual is for BEST model SIDE BY SIDE refrigerators with a number display.
The models comprise two stand-alone appliances (FIFTY TOTAL NO FROST combination appliance +
refrigerator) which are linked with an assembly set.
The manual is for appliances with the following PNCs:
Full appliance 925807511
Full appliance model KE680-1-3T
Individual PNC appliances 923807505 KE680-1-2T Refrigerator
925807510 KE680-1-2T Combination appliance
925989649 KE680-1-2T Assembly set
3.1 FIFTY TOTAL NO FROST combination appliance
FIFTY TOTAL NO FROST combination appliance features:
• No Frost (No Frost freezer, No Frost wine cooler)
• Free-standing installation
• Electronic control elements (controls type ERF2050)
• Air volume control (damper)
• The controls of the FIFTY TOTAL NO FROST combination appliance have been installed in the
Caution!
The two appliances (COMBI FIFTY and REFRIGERATOR) must be connected to the
power supply with the corresponding mains cables. The two mains cables may not
be changed.

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top part of the wine cooler.
• Electronic power unit type ERF2050.
• Electronic display type ERF2000 (display with numbers).
• The appliance has only one traditional or electronic compressor, but it is possible to switch on only
the wine cooler with the ON/OFF key.
• The temperature has been set as follows:
• from +16 to +5°C in the wine cooler
• from –15 to –24°C in the freezer
• The number display (DIGITS) shows the temperatures in both the cooling zones.
• The appliance performs the following functions:
• quick freezing
• freezer temperature alarm
• The appliance has the following cooling zones:
• freezer
• wine cooler
• The evaporator circuit comprises a finned-type evaporator (freezer).
3.2 Refrigerator
The refrigerator is type:
•Static
• Free-standing installation
• Single compressor technology
• Electronic control elements (controls type ERF2000)
• Display with numbers (DIGITS)
Refrigerator features:
• The refrigerator controls have been installed in the top part of the refrigerator.
• Electronic power unit type ERF2000.
• Electronic display type ERF2000 (display with numbers).
• The appliance has a single compressor.
• The temperature has been set as follows:
• from +8 to +2°C in the refrigerator
• The number display (DIGITS) shows the refrigerator temperature.
• The evaporator circuit comprises a hidden evaporator.
The appliance performs the following functions:
• rapid cooling (QUICK COOL)
• holiday function

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3.3 Assembly set
The assembly set contains the following components:
• Head section
•Base
•Sidebase
• Handles
•Clamps
•Screws
• Adjusting feet
4. The combination appliance at a glance
4.1 General partitioning
1 A Wine cooler
1B Freezer
2 C Refrigerator

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4.2 Internal partitioning
1 Appliance controls
2 Illumination lamp
3 Bottle shelves
4 Freezer section for fresh
food
5 Section for frozen food
6 Butter section
7 Jug shelf
8 Bottle rack
9DAC1.1
10 Illumination lamp
11 Glass shelves
12 Vegetable tray
13 Rating plate
14 Adjusting feet
4.3 Features
An NTC probe is used to determine the temperature in the wine
cooler:
• refrigerator temperature probe (located in the ventilation
screen)
A probe recognises the temperature in the freezer:
• freezer temperature probe (in the freezer)
The defrosting of the finned-type evaporator is regulated by the
electronic system by recognizing the temperature of the probes; it
depends on how often the doors are opened.
A Wine cooler temperature probe
B Freezer temperature probe
The cables for probes A and B are foamed into the interior of the
casing so they cannot be replaced (for more information see the
H8-74-05 Service Manual).

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Refrigerator features
Two probes are used to determine the
temperature in the refrigerator:
• Refrigerator air temperature probe (in the left
of the refrigerator)
• Evaporator temperature probe (in contact
with the hidden evaporator in the inner
housing)
The cables for probes A and B have been foamed
in the inside of the casing, so they cannot be
replaced.
A Refrigerator temperature probe
B Evaporator temperature probe

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5. Air flow
Unlike for the PARTLY NO FROST refrigerator, the
TOTAL NO FROST appliance refrigerator and freezer
share; the finned-type evaporator cools both cooling
zones.
The cold generated by the battery-driven evaporator
located in the freezer is distributed by the fan F mounted
behind the evaporator module.
Refrigerator air volume: the cold air is guided from the
fan to the foamed channel and comes out from the air
volume control (damper) E, which is located in the back
of the diffuser lamp mounting.
The air comes back into the freezer through the foamed
channels and enters the ventilation screen G.
Freezer air volume: the cold air is guided into the room
by the air umbrella and gets back into the evaporator
module through the front ventilation screen.
Caution!
If the door of the freezer or refrigerator is opened, the fan will come to a standstill.
To simulate a closed door, use a magnet which you insert near the Reed element
located in the middle cross bar or the Reed element located in the electronic unit.

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6. Cooling circuit
6.1 FIFTY TOTAL NO FROST combination appliance
1 Compressor 2 Capacitor
3 Anti-condensation coil 4 Drainage filter
5 Capillaries 6 Finned-type evaporator (freezer)
7 Heat exchanger
6.2 Refrigerator
1 Compressor 2 Capacitor
3 Anti-condensation coil 4 Drainage filter
5 Capillaries 6 Hidden evaporator (refrigerator)
7 Heat exchanger

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7. Electric system
7.1 FIFTY TOTAL NO FROST combination appliance
(Observe the circuit diagrams for each model!)
VERS. B = for the electronic compressor:
3 Electronic compressor 41 Compressor electronic unit
For traditional compressors:
3 Compressor 5 Motor protection
9 Defrost resistor 13 Illumination lamp
16 Freezer door switch 24 Finned-type evaporator fan
41 Electronic unit ERF 2050 52 Air volume control (damper)
56 Refrigerator air temperature probe 57 Freezer air temperature probe
a. Yellow-green b Brown
c Blue d White
eBlack fGrey
gRed

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7.2 Refrigerator
2 Compressor 5 Motor protection
13 Illumination lamp 24 D.A.C. fan 1.1
28 Operating capacitor
(only for models for which this has been provided)
41 Electronic unit ERF 2000 42 D.A.C. fan Switch 1.1
a. Yellow-green b Brown
c Blue d White
eBlack fGrey
gRed

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8. FIFTY TOTAL NO FROST combination appliance
8.1 Wine cooler
A Control panel
B Magnet for wine cooler door switch
C Wine cooler air temperature probe
D Air volume control (damper)
A Control panel
Wine cooler
A Wine cooler ON/OFF indicator light
B Wine cooler ON/OFF key
C Key for increasing the temperature in the wine cooler (+)
D Display for showing temperatures in the wine cooler
E Key for reducing the temperature in the wine cooler (-)

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Freezer
F Wine cooler + freezer ON/OFF indicator light
G Wine cooler + freezer ON/OFF key
H Key for increasing the temperature in the freezer (+)
I Display for showing temperatures in the freezer
J Key for reducing the temperature in the freezer (-)
K QUICK FREEZE function control lamp (quick-freeze)
L ACTION FREEZE function key (quick-freeze)
M Alarm control lamp
N Alarm switch-off key
Electronic units
The appliance electronic system comprises:
• Electronic power unit type ERF2050
• Display electronic unit type ERF2000 DIGITS
The two electronic units are connected to one another
with a connecting flat cable so they are available as
individual spare parts.
Electronic power unit ERF 2050
1. Earthing contact
2. Free
3. Cable
4. Compressor
5. Neutral wire
6. Illumination lamp neutral wire
7. Illumination lamp
8. Defrost resistor neutral wire
9. Defrost resistor

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1. Fan cable
2. Fan neutral wire
1. Free
2. Free
3. Free
4. Free
5. Damper
6. Damper
7. Damper
8. Damper
1. Free
2. Free
1. Wine cooler air temperature probe
2. Wine cooler air temperature probe
3. Free
4. Free
5. Freezer air temperature probe
6. Freezer air temperature probe

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Display electronic unit ERF2000 DIGITS
SW1 = Reed element
SW2 = Wine cooler + freezer ON/OFF key
SW3 = ACTION FREEZE function key (quick-freeze)
SW4 = Key for raising the temperature in the freezer (+)
SW5 = Key for reducing the temperature in the freezer (-)
SW6 = Wine cooler ON/OFF key
SW7 = Key not used (concealed under the programme panel)
SW8 = Key for increasing the temperature in the refrigerator (+)
SW9 = Key for reducing the temperature in the wine cooler (-)
SW10 = Alarm switch-off key
DGT1 = Wine cooler display
DGT2 = Freezer display
DL1 = LED not used (concealed under the programme panel)
DL2 = ACTION FREEZE function LED (quick-freeze)
DL3 = Alarm signal lamp LED
DL4 = LED sign + wine cooler
DL5 = Wine cooler ON/OFF display LED
DL6 = LED sign - freezer
DL7 = Wine cooler + freezer ON/OFF display LED

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B Magnet for wine cooler door switch
The solenoid switch for monitoring the wine cooler
door is located in the display electronic unit.
The solenoid switch is operated by a magnet M in the
door.
Monitoring the opening of the door is used for
switching on the illumination lamp of the wine cooler;
the illumination lamp is automatically switched off
again after 5 minutes.
C Wine cooler air temperature probe
An NTC probe is used to detect the temperature in the
wine cooler:
The air temperature probe for the wine cooler (located
in the right-hand ventilation screen) is not only used
for regulating the appliance with the air volume control
(damper); it is also used for showing the temperature
in the wine cooler.
Probe C has a cable foamed inside the housing, so it
cannot be replaced.
D Air volume control (damper)
The temperature setting in the refrigerator falls
through the flow (or absence of the flow) of cold air
from the damper. It has only 2 fixed positions, open or
closed.
The air volume control (damper) (1) is located in the
diffusor lamp mounting (2).
The damper comprises a flap with a stepper motor; it
is connected to the electric wiring with a 4-pole
connector.

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8.2 Freezer
A Evaporator module (cold module)
B Freezer temperature probe (foamed in
the room)
C Magnet for the freezer door switch
D Magnetic sensor for the freezer door switch
A Evaporator module (cold module)
1. Thermal switch and defrost termination switch
2. Evaporator module fan
3. Defrost resistor
Please note! The defrost termination thermal switch and the thermal circuit breaker (+8/+40°C) are
connected to one another and are thus not available as separate spare parts.
Thermal switch
The thermal switches are in direct contact with the finned-type evaporator.
They take voltage from the defrost element in the case of:
• +8°C defrost termination switch (brown cable)
• +40°C circuit breaker (blue cable)
Type of thermal switch Cut-in temperature
Open Close
Defrost termination +8°C -5°C
Circuit breaker +40°C +30°C