Kuppersbusch ITE 128 Series User manual

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Service Manual: H8-74-06
Responsible: Uwe Laarmann KÜPPERSBUSCH HAUSGERÄTE AG
E-mail: [e-mail]
Tel.: [phone] Kundendienst
Fax: [phone] Postfach 100 132
Date: 25.01.2005 45801 Gelsenkirchen

Service Manual 3
For internal use only
Contents
1. Safety instructions ......................................................................................................... 4
2. Introduction..................................................................................................................... 5
3. New Door on Door installation system......................................................................... 6
4. Accessibility.................................................................................................................... 6
4.1 Refrigerator display ............................................................................................... 6
4.2 3/4 star compartment ............................................................................................ 6
5. Operation......................................................................................................................... 7
5.1 Combination bi-compressor .................................................................................. 7
5.2 3/4 star compartment .......................................................................................... 10
5.3 Refrigerator display ............................................................................................. 11
5.4 Freezer display.................................................................................................... 12
6. NTC sensor failure........................................................................................................ 13
6.1 NTC sensor properties ........................................................................................ 14

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1. Safety instructions
Danger!
Repairs should only be carried out by a qualified electrician.
Repairs which are not carried out properly may put the user at risk.
In order to avoid electrical shocks it is essential that the following instructions be observed:
• In the event of a fault the casing and the frame may be live. Always disconnect the appliance from
the mains prior to commencing with repairs.
• Touching live parts inside the appliance can result in serious electrical shocks.
• Disconnect the appliance from the mains prior to carrying out repairs.
• A residual current circuit breaker is always to be used when carrying out tests on live parts.
• Always ensure that an earthed conductor is properly connected. Earthed conductor resistance may
not exceed figures stipulated in the standard. It is vital for ensuring the safety of persons and the
functioning of appliances.
• After a repair has been carried out, a test in accordance with VDE 0701 or the respective national
regulations and a functional and leak test are to be carried out.
• Do not touch any of the components in the appliance. The modules are also live!
• Observe instructions on electrostatic hazards.
Note!
It is essential to observe the following instructions:
• Appliances must be cut off from the mains prior to carrying out any repairs. A residual current circuit
breaker must be used when carrying out the required tests on current-carrying appliances.
Sharp edges: protective gloves must be worn.
Electrostatic endangered components:
observe handling instructions!

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2. Introduction
This manual describes the new models of integrated built-in fridge-freezers, such as ITE 128...,
IKE 188..., IKE 178..., IKE 238... or IKE 318-4-4T. This new series has the following modifications:
• new width of the housing: 556 mm instead of 540 mm for the sliding door model
• new Door on Door installation system
• quieter compressor
• perfect workmanship
• the models are available in electromechanical and electronic versions (with the exception of 1780 -
the bi-compressor only electronic)
• control panel at the top of the appliance
The door on door series has a version with electronic and mechanical controls for each model, except
for the bi-compressor, which is available as an electronic model only. The models are:
Type Capacity
(litres) Controls
Freezer 76 electronic
Freezer 76 mechanical
Freezer 109 electronic
Freezer 109 mechanical
Refrigerator 157 electronic
Refrigerator 157 mechanical
Refrigerator 187 electronic
Refrigerator 187 mechanical
Refrigerator 227 electronic
Refrigerator 227 mechanical
3/4 star compartment 143 electronic
3/4 star compartment 143 mechanical
3/4 star compartment 173 electronic
3/4 star compartment 173 mechanical
3/4 star compartment 215 electronic
3/4 star compartment 215 mechanical
Bi-compressor 209 + 76 electronic

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3. New Door on Door installation system
The new Door on Door installation
system:
• easy installation
• immediate installation
• no checking on measurements
• applicable for all types of housing
The individual steps are described in the
manual.
4. Accessibility
4.1 Refrigerator display
In order to remove the control panel,
lever off the two cover tops on the left
and on the right and loosen the screws.
The panel can now be removed.
4.2 3/4 star compartment

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5. Operation
5.1 Combination bi-compressor
The combination bi-compressor refrigerator is only illustrated with electronic controls.
5.1.1 Switching the appliance on and off
The ON/OFF button must be pressed to switch the appliance on; T1 for the refrigerator and T5 for the
freezer. The respective appliance will be switched on immediately.
The ON/OFF button must be pressed for one second to switch the appliance off. The display will indicate
3, 2, 1 and the appliance will then be switched off.
5.1.2 Setting the freezer temperature
If the temperature setting in the freezer is to be changed, the T6 button must be pressed to raise the
temperature and the T7 button must be pressed to lower the temperature. Temperatures of between
–15°C and –24°C can be set.
When the T6 or T7 buttons are pressed, the display will blink for 5 seconds and indicate the temperature
setting which has been measured inside the freezer.
Buttons LED Display
T1 = ON/OFF refrigerator L1 = Refrigerate mains control
display (green) D1 = Refrigerator
T2 = Increase in refrigerator temperature L2 = Rapid-cool display (yellow) D2 = Freezer
T3 = Decrease in refrigerator temperature L3 = Freeze mains control
display (yellow)
T4 = Rapid-cool function L4 = Frostmatic function
T5 = ON/OFF freezer L5 = Alarm (red)
T6 = Increase in freezer temperature
T7 = Decrease in freezer temperature
T8 = Superfrost function
T9 = Alarm off

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Switching the freezer compressor on and off depends on the external NTC sensor (environment).
5.1.3 Superfrost function
Pressing the T8 button will activate the superfrost function with which the compressor is supplied
consistently for 54 hours. In order to deactivate the function, the T8 button must be pressed again before
the 54 hours have lapsed. The LED 14 will light up for as long as the freeze function is activated.
5.1.4 Temperature alarm
If the freezer temperature exceeds –8°C an alarm will be activated and the L5 LED and the display will
blink. A buzzer will also sound. The buzzer is switched off by pressing the T9 button. The display will
indicate the maximum temperature reached for 5 seconds and the L5 LED will blink. The L5 LED will
only switch off if the temperature falls to below –8°C.
If the alarm switches of automatically without the T9 button having been pressed, the buzzer will switch
off but the L5 LED and the display will continue to blink. If the T9 button is pressed, the L5 LED will stop
blinking and the display will indicate the maximum temperature reached for a period of 5 seconds.
5.1.5 “Door open” alarm
This alarm is activated by a sensor (Reed) in the electronic system if a small magnet is detected on the
refrigerator door.
Activation takes place after:
door opened (freezer) 80 seconds
door opened (refrigerator) 5 minutes
(the alarm is not
implemented for all
of the models)
5.1.6 Setting the refrigerator temperature
In order to adjust the temperature set in the refrigerator, the T2 button (raise temperature) or the T3
button (lower temperature) is pressed. Temperature settings range from +2°C to +8°C.
If the T2 or T3 buttons are pressed, the display will blink for 5 seconds and the temperature setting will
be indicated. The display indicates a fixed temperature which has been measured inside the refrigerator.
5.1.7 Refrigerator holiday function (only for coolers and bi-compressors)
The maximum possible temperature setting in the refrigerator compartment reaches +8°C; if the T2
button is pressed again after this temperature has been reached, the display will show “H” for holiday in
order to indicate that the holiday function has been activated. For this function the refrigerator is
maintained at a constant temperature of +15°C.
Although food is not kept fresh at this temperature, it is very useful when the refrigeration compartment
is not being used, since it prevents the occurrence of unpleasant smells.
In order to deactivate the function, set a different temperature until the “H” in the display goes off.

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5.1.8 Refrigerator controls
The compressor is activated when both the external NTC sensor (environment) and the NTC sensor for
the evaporator measure the switch-on temperature. It is switched off when the temperature measured
by the external NTC sensor (environment) reaches the switch-off temperature.
The interval time of the compressor may be extremely long if the room temperature is low. For this
reason the refrigerator control function provides for a maximum deactivation period of six hours.
If room temperatures are high the activation times of the compressor may be extremely long or the
compressor may remain constantly activated if the thermostatic setting has not been adjusted; for this
reason the control function provides for a maximum activation period of 18 hours.
For the 4**** compartment only: in the case of low room temperatures an equalising resistance device
is automatically activated by an electronic unit equipped with a sensor.
5.1.9 Rapid-cool function in the refrigerator (COOLMATIC)
Pressing the T4 button will activate the rapid-cool function, by means of which the temperature in the
refrigerator is automatically set at +2°C. The function switches off automatically after 6 hours or by
means of pressing the T4 button.
The yellow L2 LED lights up in order to indicate that the function has been activated.
5.1.10 Demonstration mode
The demonstration mode is activated if the button for lowering the temperature and the ON/OFF button
are pressed simultaneously for 5 seconds. The temperature inside the appliance must be higher than
+10°C in order to be able to activate the function.
The display module is activated and the light is switched on as soon as the door is opened, but the
compressor is not switched on.

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5.2 3/4 star compartment
The combination bi-compressor refrigerator is only illustrated with electronic controls.
The description of the functions, the buttons and the LEDs is the same as for the combination bi-
compressor.
The superfrost function and the implementation of an equalizing resistance with automatic switch-on are
different.
5.2.1 Superfrost function in the 4-star compartment
Pressing the T8 button activates the superfrost function, with which the appliance is automatically cooled
down to a temperature of +2°C in the refrigerator for a period of 48 hours. In order to deactivate the
function, the T8 button must be pressed again before the 48 hours have lapsed. The LED 14 will light up
for as long as the superfrost function is activated.
Buttons LED
T1 = ON/OFF refrigerator L1 = Refrigerate ON/OFF (green)
T2 = Increase in temperature L2 = Rapid-cool function (yellow)
T3 = Decrease in temperature L4 = Superfrost function (yellow)
T4 = Rapid-cool function
T8 = Superfrost function

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5.2.2 Equalizing resistance with an automatic switch-on device
(3/4 star compartment)
The 3/4-star compartment model is equipped with an equalizing resistance device which switches on
automatically if the NTC sensor (S) on the electronic module measures a room temperature of less than
+24°C.
5.3 Refrigerator display
The functions, buttons and LEDs are the same as those of the combination bi-compressor.
Symbols
“0” – “39” constant light: display for the average temperature in the refrigerator
“2” – “8” blinking light: display while adjusting the temperature; display switches off
5 seconds after completion of setting
“0”constant light: display for a refrigerator temperature of less than 0°C
“H” constant light: display of the holiday function
constant light: air NTC sensor failure
constant light: evaporator NTC sensor failure

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5.4 Freezer display
The functions, buttons and LEDs are the same as those of the combination bi-compressor.
Symbols
“+39” – “–35” constant light: display of the average temperature in the freezer
“–15” – “–24” blinking light: display while adjusting the temperature; display switches off
5 seconds after completion of setting
“+39” – “–35” blinking light: display if the freezer temperature exceeded –8°C
and then dropped again
“+39” – “–8” constant light: display of the highest temperature in the compartment after a power
cut (when the re-set button is pressed, the current temperature is
indicated for 5 seconds. At the same time the light is switched off)
constant light: failure of the NTC sensor in the freezer

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6. NTC sensor failure
The NTC sensors have the following temperature resistances:
The electronic unit considers abnormal resistance levels to be a sensor failure. A symbol appears on the
display.
If a sensor is faulty, the corresponding compressor is switched on for 30 minutes and off for 45 minutes.
All of the NTC sensors are foamed and can therefore not be replaced.
NTC sensor failure symbols:
refrigerator (air NTC sensor faulty): symbol in the thermometer
Refrigerator (evaporator NTC sensor faulty): symbol in the thermometer
Refrigerator (refrigerator NTC sensor faulty): symbol in the thermometer
If the surrounding temperatures at the point of installation are extreme (above +39°C and below –35°C)
the NTC sensors may fail and result in error messages although the NTC sensors are not faulty.
If surrounding temperatures at the point of installation exceed +39°C and fall below –35°C, NTC sensor
error messages should be ignored.
10 000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
Resistance (ohms)
–40 –30 –20 –10 0 10 20 30 40
Temperature (°C)

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6.1 NTC sensor properties
Conversion chart