Kuppersbusch EKI User manual

GB
Ceramic induction hob with
sensor touch controls
EKI
i
i
i
i

Manual: H1-50-03
Responsible: D. Rutz KÜPPERSBUSCH HAUSGERÄTE AG
Tel.: [phone] Kundendienst
Fax: [phone] Postfach 100 132
Date: 22.05.2000 45801 Gelsenkirchen

Service Manual EKI 3
For internal use only
Contents
1. Induction hob of the 3rd generation.............................................................................4
1.1 Induction: Preparing hot meals on cold zones ......................................................4
1.2 Technical mode of operation.................................................................................4
1.3 Optimum efficiency...............................................................................................4
1.4 The right saucepans are what’s needed................................................................5
1.5 Design of an induction cooking zone.....................................................................6
1.6 Dimensions and ratings.........................................................................................7
1.7 Important notes on installation ..............................................................................7
2. Technical data of the induction hob........................................................................... 10
2.1 Standards observed during manufacture ............................................................10
2.2 Notes on safety and hazards...............................................................................10
3. Control and function elements....................................................................................11
3.1 Control elements .................................................................................................11
3.2 Displays...............................................................................................................11
3.3 Acoustic signal ....................................................................................................11
3.4 Temperature measurement.................................................................................11
3.5 Cooling ................................................................................................................11
4. Basic functions............................................................................................................. 12
4.1 Switching the control on and off..........................................................................12
4.2 Switching a cooking zone on...............................................................................12
4.3 Switching a cooking zone off...............................................................................13
4.4 Booster function ..................................................................................................13
4.5 Power characteristics..........................................................................................14
4.6 Key-lock function.................................................................................................14
4.7 Saucepan sensors...............................................................................................14
4.8 Displays - Optical signals .................................................................................... 15
4.9 Buzzer .................................................................................................................16
4.10 Fan ......................................................................................................................16
5. Safety functions............................................................................................................17
5.1 Automatic deactivation of the control ..................................................................17
5.2 Heat display.........................................................................................................17
5.3 Power reduction due to excess temperature.......................................................17
5.4 Operating time limit .............................................................................................19
5.5 Power failure ....................................................................................................... 19
6. Fault messages............................................................................................................. 20
6.1 Cooking zone ......................................................................................................20
6.2 Module.................................................................................................................20
6.3 Hob......................................................................................................................20
7. Customer service diagnosis........................................................................................22
7.1 Call-up of the diagnosis menu.............................................................................22
7.2 Diagnosis mode...................................................................................................22
7.3 Diagnosis.............................................................................................................23
7.4 Ending the diagnosis mode.................................................................................24

4 Service Manual EKI
Forinternaluseonly
1. Induction hob of the 3rd generation
1.1 Induction: Preparing hot meals on cold zones
Induction hobs are characterised by high efficiency for initial cooking and simmering. If the cooking
zones are fitted with a touch control panel, the sensor technology switches the cooking zone on when
your finger touches the marking. A serial interface for bi-directional data transmission is available for
combined cookers with hob and oven.
Induction hobs of the 3rd generation are ready-to-install components and consist of four induction coils
each with a converter, cooling system and accessories.
In spite of the complexity due to the system design and regulations, the technology is compressed into
a very small space. When installed in modern appliances, it only requires a small installation space.
In daily use induction appliances offer benefits which justify their price. The convincing arguments speak
for themselves:
♦Energy is only transferred when the saucepan is placed on the hob (sensors which recognise sauce-
pans suitable for induction).
♦The heat is only generated in the saucepan base and transferred immediately to the food. The initial
cooking times are very short. Reactions, e.g. to changes in settings, take place at once.
♦High initial cooking efficiency and excellent simmering energy consumption reduce the total energy
consumption.
♦The glass ceramic is only heated indirectly through the saucepan base. Any food which boils over
cannot therefore burn on. And the user is protected against burns.
♦If the saucepan is empty or boils dry, the cooking zone is switched off by a thermostat.
♦All cooking zones can be operated at rated power independently of each other.
♦One cooking zone is equipped with a power setting (3 kW).
♦Processor-controlled, sensitive regulation of the power supply.
1.2 Technical mode of operation
The induction coil is arranged under the glass ceramic. It is supplied with power through a converter
which converts the mains power into a higher-frequency alternating current. This AC generates an
electromagnetic AC field which penetrates the glass ceramic and induces the heat-producing eddy
current in the saucepan base.
The glass ceramic itself stays cold. It is merely back-heated indirectly via the saucepan base.
When the saucepan is removed, the cooking zone is switched off automatically. If a pan is empty or boils
dry, deactivation is triggered by a temperature sensor.
1.3 Optimum efficiency
The efficiency of induction hobs is governed by the base material, diameter and weight (mass) of the
saucepans. The saucepans and cooking zone should be matched to each other so that the advantages
can be optimally exploited.

Service Manual EKI 5
For internal use only
Comparatively short initial cooking times and high initial cooking efficiency are achieved owing to the
energy conversion directly in the saucepan base. The favourable simmering energy consumption, which
corresponds to that of conventional cooking systems, is typical of induction hobs.
In induction cooking the food can be prepared and cooked as usual. One merely has to become
accustomed to the short initial cooking times and the rapid reaction to changes in settings. Therefore, it
may be advisable with sensitive roasting or cooking processes not to start at full power but to offset the
less favourable heat distribution due to the system with a lower initial cooking setting.
1.4 The right saucepans are what’s needed
Saucepans suitable for induction are available from specialised shops or KAG. The important point is
that the saucepan base has good thermal conductivity - also termed transverse conductivity - to ensure
good heat distribution.
Magnetisable saucepans must be used to exploit the induction technology. For example, enamel sauce-
pans made of magnetic steel, grandmother’s cast iron roasting pots or new stainless steel saucepans
with a special sandwich base.
Saucepans suitable for induction can normally be also used without any limitations on conventional
cookers.
The three-piece induction cookware set from Küppersbusch (Acc. No. 159) comprises:
Saucepan with lid, ∅ 16 cm, height 11 cm
Saucepan with lid, ∅ 20 cm, height 12 cm
Frying pan, ∅ 24 cm, height 5 cm.
The complete set of saucepans from Küppersbusch (on request) comprises:
Saucepan with lid, ∅ 16 cm, height 11 cm
Saucepan with lid, ∅ 18 cm, height 12 cm
Saucepan with lid, ∅ 20 cm, height 12 cm
Saucepan with lid, ∅ 20 cm, height 17 cm
Saucepan with lid, ∅ 24 cm, height 15 cm
Casserole with lid, ∅ 16 cm, height 8 cm
Frying pan, ∅ 24 cm, height 6.5 cm
Frying pan with lid, ∅ 24 cm, height 6.5 cm
Steamer, ∅ 20 cm, suitable for saucepans, ∅ 16, 18 and 20 cm.

6 Service Manual EKI
Forinternaluseonly
1.5 Design of an induction cooking zone
Schematic diagram of how an induction cooking zone works
For technical data on the induction cooking zone, see page 10.
Eddy currents
heat the saucepan base Saucepan base made of
magnetisable material
Glass ceramic
Electromagnetic AC field
Control
Converter
about 25
kHz 50 Hz
Mains
Induction coil
element
Sensor for measuring temperature
(Protection against overheating and heat
Induction coil covered with
a heat-insulating plate
display)

Service Manual EKI 7
For internal use only
1.6 Dimensions and ratings
The following cooking zones are available:
Nom. Ø 145 mm 1.4kW
Nom. Ø 180 mm 1.8kW
Nom. Ø 210 mm 2.2kW
The diameter 210 mm can only be combined with the smallest cooking zone owing to the connected load
which is limited to 3.6 kW.
1.7 Important notes on installation
Induction hobs are supplied ready to install. They may only be used after proper installation.
The unit must be installed on resilient supports to prevent damage to the induction system and the glass
ceramic.
Induction hobs are only fully operable if they are adequately cooled by air in the finished appliance.
Appropriate precautions must be taken to satisfy this requirement.
1.7.1 Dimensional drawing for installation of the induction hob
A ventilation slit of at least 7 mm mustbe provided above the panel in every method of installation.
Ventilation openings are to be provided in the back of the cupboard. Cold air is drawn in through the front
ventilation slit. The heated air escapes through the ventilation openings in the rear.
An air channel to be installed (see following descriptions) prevents the heated airflowing back to the cold
air intake side.
front slit
ventilation

8 Service Manual EKI
Forinternaluseonly
1.7.2 Installation on a cover board
If the hob is installed on a fitted cupboard, a cover board must be installed in the kitchen cupboard.
♦.Install the cover board under the worktop as follows:
with a 40 mm worktop 50 mm underneath the worktop,
with a 30 mm worktop 60 mm underneath the worktop,
with a 50 mm worktop 40 mm underneath the worktop.
♦Assemble the enclosed foam mouldings as illustrated and
place on the cover board. This prevents the heated air from
flowing back to the cold air intake side. This is important for
proper functioning!
♦Insert the protruding foam under the worktop and install the
hob.
1.7.3 Installation above a Küppersbusch built-in electric oven
The induction cooking hob may only be installed above a Küppersbusch built-in electric oven with
housing cooling. A ventilation slit of at least 7 mm must be provided at the front above the oven so that
cold air can be drawn in.
Place the foam mouldings on the oven. The enclosed
mouldings are slit. Parts of the foam are to be torn off
so that the step created by the oven is offset, see
next illustration.
♦Also seal the front right with a torn-off piece of
foam moulding, see next illustration.
♦Insert the protruding foam between the cooker
and the worktop and
♦Install the hob.
Important: Ensure good sealing so that no air short-
circuit can occur between the intake side and the
discharge side. For the same reason openings in the
intake area of the ventilator in the oven top are to be
closed with enclosed strips of adhesive tape.

Service Manual EKI 9
For internal use only
1.7.4 Installation above a drawer (with accessory No. 136)
Components: 1 air channel, foam strips, 12 pan-head tapping screws, 1 protective mesh for fan
Important: The cupboard rear must be closed. The warm cooling air must not be able to return to the
fan intake opening. Inadequate cooling of the power electronics results in a power eduction of the hob.
1 View of the cupboard rear from inside
2 Cupboard view from the side
3 Foam strips
4 View of the hob from below
Installation of the air channel
♦Make recess in cupboard rear according to dimensions in
Fig.
1 .
♦Attach air channel sheet on the cupboard rear with the en-
closed pan-head tapping screws as illustrated in Fig.
2 .
♦Tear off the foam strips with the hob as shown in Fig. 3
and stick onto the self-adhesive tape on the both sides of
the sheet in order to produce a sela at the side (see
Fig.
2 .
Attaching the protective mesh for fan
♦Turn hob over and undo the 3 screws beside the fan opening out of the bottom of the hob. When
turning the hob over, protect it agianst being scratched.
♦Mount the protective mesh and fasten with the 3 screws (see Fig. 4 ).
♦Insert the hob (see Fig. 4 ).
1
2
3
4

10 Service Manual EKI
Forinternaluseonly
2. Technical data of the induction hob
Nom. voltage: 230V ±10% AC 50Hz
Connected load: max. 3.6kW
Cooling: Fan cooling
Air inlet temperature: < 45°C
Ambient temperature: 0°C … 85°C
Type of enclosure: I
Dimensions (LxWxH): 470 x 410 x 40mm (50mm with fan)
Weight: about 6.5kg
Power setting: processor-controlled, sensitive
Power level: Power increased to 3kW,
possible for one cooking zone
Control unit power controller: EGOTROL®or EGO touch control
2.1 Standards observed during manufacture
EN 60335-1 Safety of electrical appliances for use in the home and similar purposes
EN 60335-2-6 Cookers, table-top cooking appliances, ovens and similar appliances for use
in the home
EN 61000-3 Limitation of mains pollution at power supply utilities
EN 55011, EN 55014 Radio interference suppression
EN 55104 Electromagentic compatibility
2.2 Notes on safety and hazards
Inducton hobs were designed in compliance with the latest standards.
The cooking zones are co-ordinated so that they work with avery large, the same size or the next smaller
size of saucepan base diameters. The saucepans should always be placed in the centre of the zones.
For safety’s sake large ferromagnetic objects (e.g. baking trays) should never be placed on the cooking
zone (glass ceramic).
People who have pacemakers are not at risk according to present scientific knowledge if the induction
cooking zones are used properly. A residual risk cannot be excluded if the cooking zones are used
improperly and under unfavourable conditions.
KAG recommends people with pacemakers to consult a doctor before working with induction hobs. An
appropriate hazard sign should be mounted on the finished appliance or in its instructions for use. KAG
can provide information at any time on the latest state of the art.

Service Manual EKI 11
For internal use only
3. Control and function elements
3.1 Control elements
♦1 Main switch button ON
♦1 Main switch button OFF
♦4 Plus buttons
♦4 Minus buttons
♦1 Power button (booster)
♦1 Key-lock button
3.2 Displays
♦4 7-segment displays (actuator displays)
♦1 LED for main switch
♦1 LED for power button (booster)
♦1 LED for key-lock button
3.3 Acoustic signal
♦1 Buzzer
3.4 Temperature measurement
♦1 NTC sensor on the heat sink
♦4 PT sensors on the cooking zones
3.5 Cooling
♦1 Fan
Cooking zone 1 Cooking zone 2 Cooking zone 3 Cooking zone 4
LED 7-segment display LED
Power button Minus button
Plus button
Main switch button ON
Key-lock button
Main switch button OFF
21 2))

12 Service Manual EKI
Forinternaluseonly
4. Basic functions
4.1 Switching the control on and off
4.1.1 General
Switching on and off relates here to the function of the main switch buttons as elements which release
or block the functions of the other buttons. The control is always supplied with power.
4.1.2 Switching the control on
The touch control is switched on by activating the main switch button ON.
If other buttons have been activated, the control cannot be switched on until all buttons have been
released and the main switch button ON has been pressed again.
After the control has been switched on, a „0“, or if the heat display was previously activated, an „H“ is
displayed.
The main switch LED comes on.
4.1.3 Switching the control off
♦By the user
The touch control can be switched off at any time by pressing the main switch button OFF,
regardless of whether other buttons are activated.
The main switch LED goes off.
♦Automatic
See safety functions on page 17.
4.2 Switching a cooking zone on
A cooking zone can be switched on in two ways:
♦With the corresponding plus button starting at 1.
Pressing briefly increases the cooking level by one setting.
Slower activation increases the setting in increments up to (9).
♦With the corresponding minus button starting at 9.
Pressing briefly lowers the cooking level by one setting.
The value is set to 0 if the button is kept depressed.

Service Manual EKI 13
For internal use only
4.3 Switching a cooking zone off
A cooking zone can be switched off in two ways:
♦With the corresponding minus button
♦By pressing the corresponding plus and minus buttons at the same time.
When the cooking zone is switched off, the display changes from „0“ to „H“ after 3 seconds if the cooking
zone is hot.
The assignments of the plus and minus buttons to the cooking zones are stored in the EEPROM as
parameters.
4.4 Booster function
A booster function (3000 W) is available on cooking zone 1. This mode is activated by pressing the
power button. The booster function is started regardless of whether the cooking zone was previously
switched on or off.
A 9 appears in the actuator display and the booster LED comes on.
The booster function lasts max. 10 minutes. Then the appliance switches back to cooking level 9 and
the booster LED goes off.
The booster function is ended prematurely if
♦the power button is activated again,
♦the corresponding minus button is activated,
♦the cooking zone temperature exceeds 250°C,
♦the heat sink temperature exceeds 76°C.
If the saucepan is removed during the booster period, the time is stopped. If another saucepan is placed
on the zone before expiry of the saucepan sensor time (10 minutes), the remaining time is executed.
The booster function can also be activated if there is no saucepan on the cooking zone.
As the total power of a module must not exceed 3600 Watt, cooking zone 4 is limited to 600 Watt during
the booster time. If the user has specified a higher setting for cooking zone 4, the control reduces the
power; this is indicated by the corresponding actuator display flashing with the desired cooking zone
code and the reduced code 6. After the end of the booster function the preset power is provided again
at cooking zone 4.
If the booster function is not to be switched on because of too high a cooking zone or heat sink
temperature (see deactivation values), the booster LED flashes until the booster button is pressed.

14 Service Manual EKI
Forinternaluseonly
4.5 Power characteristics
The parameters for the power characteristics are stored in an EEPROM for each cooking zone.
DC = Duty cycle
4.6 Key-lock function
The appliance can be locked to prevent unauthorised use with the key-lock button.
On hobs manufactured up to June 1999 this children’s safety feature is switched on and off again with
the key-lock button.
On hobs manufactured after July 1999 the children’s safety feature is only switched on with the key-lock
button. It is switched off by pressing the buttons "On" and "Key-lock" at the same time and the "Power"
button within 5 seconds (these buttons are easy to find as the LEDs flash).
4.7 Saucepan sensors
Every induction cooking zone is equipped with saucepan sensors. They prevent activation as long as no
saucepan has been placed on the zone or if unsuitable saucepans are used. If the saucepan is removed
during use, the power is cut off.
As long as the cooking zone is switched on, any missing or unsuitable saucepan is displayed on the
corresponding actuator display with the symbol "Saucepan missing" (see Annex C).
The saucepan sensors operate for 10 minutes. If no suitable saucepan is placed on the cooking zone
during this time, the zone is switched off. The display changes from the symbol "Saucepan missing" to 0.
Cooking
level Nom.power Cooking zone 1
(Ø 180mm)
Cooking
zone 2
(Ø 145mm)
Cooking
zone 3
(Ø 210mm)
Cooking
zone 4
(Ø 145mm)
Code % %
DC Watt %
DC Watt %
DC Watt %
DC Watt
1 2.5 13.7 55 13.7 35 13.7 45 13.7 35
2 5.0 27.8 110 27.8 70 27.8 90 27.8 70
3 7.5 41.6 165 41.6 105 41.6 135 41.6 105
4 12.5 69.4 275 69.4 175 69.4 225 69.4 175
5 18.0 100.0 396 100.0 252 100.0 324 100.0 252
6 24.0 100.0 528 100.0 336 100.0 432 100.0 336
7 45.0 100.0 990 100.0 630 100.0 810 100.0 630
8 60.0 100.0 1320 100.0 840 100.0 1080 100.0 840
9 100.0 100.0 2200 100.0 1400 100.0 1800 100.0 1400
P 136.4 100.0 3000 ––––––

Service Manual EKI 15
For internal use only
4.8 Displays - Optical signals
4.8.1 7-segment displays for cooking zones
A display is assigned to each actuator (cooking zone). In addition to the signals for the settings and the
heat display, the user is also shown the modes "Saucepan missing", "Cooking zone temperature sensor
breakage/short-circuit" and "Failure of the mains synchronising pulse".
1. The display of the selected cooking zone changes on activation of the plus or minus button from the display of the special
symbol to the current cooking level. After the button is released, the display changes back after 2 sec. to the special
symbol. If activation of the button does not result in any change to the cooking level (activation too short), no acoustic signal
is emitted, either.
2. If the temperature limiting values for power reduction are exceeded, the display flashes between the set cooking level value
and the cooking level actually executed (66%). Should the temperature limiting values for deactivation be exceeded, the
display flashes between the set cooking level and "0".
3. If in booster mode the second cooking zone belonging to the module is also to be used, its display flashes between the set
cooking level value and the actual value executed (max. 600 W) if the power set is greater than 600 W.
4.8.2 LED for main switch
With the control switched on, an LED above the main switch button ON comes on.
4.8.3 LED for booster function
Activation of the booster function is displayed by an LED above the booster button.
At the end of the function the LED goes off.
Control Cooking
zone Mode Display
7-segment LED
Off Off Cooking zone cold Dark
Off Off Cooking zone hot H
On Off Cooking zone cold 0 Main switch LED
comes on
On Off Cooking zone hot H1)
On On Without saucepan Symbol "Saucepan
missing"1)
On On With saucepan Cooking level2)
On On Booster function
with saucepan Max. cooking level3) Booster LED comes on
On Key-lock function
active Key-lockLEDcomes on
On On Sensor breakage,
sensor short-circuit,
mains synchronising
pulse not available
F1)

16 Service Manual EKI
Forinternaluseonly
4.8.4 LED for key-lock function
With the control switched on, activation of the key-lock function is displayed by an LED above the key-
lock button.
4.9 Buzzer
Each activation of a button which results in a sensible and feasible action is acknowledged by a brief
acoustic signal. These actions are:
♦Switching the touch control on and off with the main switch buttons.
♦Switching the key-lock function on and off with the key-lock button.
♦With the key-lock deactivated, switching a cooking zone on and off with the plus or minus buttons.
♦With the key-lock deactivated, changing the cooking level with the plus or minus buttons.
4.10 Fan
A fan is used to improve the cooling of the power components. It is activated at two speed levels and
depends on the heat sink and cooking zone temperatures.
4.10.1 Fan activation via heat sink temperature
The fan is switched on at half speed at a heat sink temperature of over 50°C. If the temperature rises to
above 60°C, the fan switches over to full speed. If the temperature falls below 45°C, the fan is switched
off.
The parameters of the temperatures are stored in the EEPROM.
4.10.2 Fan activation via the cooking zone temperature
The fan switches to full speed irrespective of the heat sink temperature if the temperature of one cooking
zone exceeds 250°C. If the heat sink temperature does not necessitate otherwise, the fan is switched
off again at about 30K less.
The activation value is stored in the EEPROM as a parameter (see power reduction control via cooking
zone temperature - Cancelling reduction control). The deactivation value is calculated using a constant.

Service Manual EKI 17
For internal use only
5. Safety functions
5.1 Automatic deactivation of the control
The touch control is switched off automatically when
♦after activation the user does not press any more buttons and no cooking zone is in use within
10 seconds;
♦no button is reactivated after deactivation of the last cooking zone still in use. The deactivation time
for this is 10 seconds and is displayed by the decimal points flashing;
♦one or more buttons is/are pressed for longer than 10 seconds.
(Apart from the repeat functions of the plus and minus buttons; here the 10 seconds only start after
the end value has been reached).
After deactivation of the control the H is still displayed if the cooking zone is hot.
Otherwise all displays and LEDs go off.
5.2 Heat display
If the temperature sensor of a cooking zone reports a cooking zone temperature of > 65°C, an “H“ is
displayed in the corresponding actuator display with the touch control switched off or with the touch
control switched on but the cooking zone switched off. If the temperature falls below 60°C, the display
goes off with the control deactivated. With the control activated the display changes from “H“ to “0“.
The parameters of the temperature values are stored together for all cooking zones in the EEPROM.
5.3 Power reduction due to excess temperature
5.3.1 Cooking zone temperature
A PT sensor is provided at each cooking zone which protects the induction coil from overheating.
The following action is taken if the cooking zone temperature is too high:
♦At a cooking zone temperature > 250°C the fan is switched on at full speed.
If cooking zone 1 exceeds this temperature, any active booster function is also ended.
The booster LED goes off.
♦Ata cookingzonetemperature >280°Cthepowersupplied islimited to max. 66% (cookinglevel 8).
If the cooking zone is used at cooking level 9, the power reduction is indicated in the corresponding
actuator display by the flashing of the values 9 and 8.
♦If the cooking zone temperature rises to over 300°C, the zone is switched off.
The corresponding actuator display indicates “0“ and changes to “H“ after 3 seconds.
The parameters of the temperature values are stored for each cooking zone in the EEPROM.

18 Service Manual EKI
Forinternaluseonly
5.3.2 Heat sink temperature
An NTC sensor which protects the electronic components against overloading is arranged on the heat
sink. The following action is taken if the heat sink temperature is to high:
♦At a heat sink temperature > 76°C any active booster function is ended.
The booster LED goes off.
♦At a heat sink temperature > 85°C the power supplied is limited to max. 66% (cooking level 8).
If the cooking zones are used at level 9, the power reduction to 66% is indicated in the correspond-
ing actuator displays by the flashing of the values 9 and 8.
♦If the heat sink temperature rises to over 90°C in spite of the preceding power reduction, all cooking
zones are switched off.
The corresponding actuator displays indicate this by the flashing of "dark" and “0“.
♦Whenthe heatsink temperaturefalls below85°Cagain,the cookingzones areswitchedonagain.
If the set power is greater than 66% (cooking level = 9), this takes place at reduced power.
Then the value between 9 and 8 flashes in the actuator displays.
♦As soon as the heat sink temperature is < 80°C, the cooking zones work at the set cooking level 9
again with the desired power.
The actuator displays stop flashing and indicate the cooking level set.
The parameters of the temperature values are stored in the EEPROM.

Service Manual EKI 19
For internal use only
5.4 Operating time limit
Each cooking zone has its own operating time limit. This depends on the cooking level set and is
reloaded each time the level is changed.
Once the operating time limit is reached, the corresponding cooking zone is switched off.
The values are defined together for all 4 cooking zones as constants.
5.5 Power failure
The control can bridge a mains power failure of 1 second by switching off almost all power-consuming
components. This means that the starting condition of the hob can be reinstated if the power failure time
is less than 1 second. Reset then takes place on the microcontroller, i.e. the control initialises itself again
and all the user settings are lost. During this initialisation period E-00 appears in the actuator displays.
After initialisation of the control, the key-lock function is active when the appliance is first switched on
again.
Cooking zone Operating time limit
Code [Hours]
110
210
35
44
53
63
72
82
91
P1

20 Service Manual EKI
Forinternaluseonly
6. Fault messages
A fundamental difference is made between two types of fault:
♦Faults which permit further use
(fault is limited to cooking zone(s) or module)
♦Faults which do not permit further use
(fault has an effect on the entire hob)
6.1 Cooking zone
The fault where the temperature sensor on the coil is defective (sensor breakage or sensor short-circuit)
can occur on one single cooking zone. If this is the case, the power to the corresponding cooking zone
is switched off (cooking level > 0) and an F appears in the actuator display corresponding to the cooking
zone. No fault is indicated if the cooking zone is switched off.
The other cooking zones can continue to be used.
6.2 Module
The fault where the pulse for the mains-synchronising activation and deactivation of the cooking zones
is not available can occur on one module. If this is the case, the power to the corresponding cooking
zone (cooking level > 0) is switched off and an F is shown in the actuator display corresponding to the
module. No fault is indicated if the cooking zone is switched off.
The other module can continue to be used.
6.3 Hob
The faults listed below result in the hob not being able to be used. If the fault is already known when the
main switch button ON is activated, the fault code is then displayed. If the fault occurs during use, all
cooking zones are switched off and the fault code is displayed.
Faults which affect the entire hob are indicated in the following form:
The display goes off after 10 seconds or if the main switch button OFF is activated before expiry of the
time.
Display Meaning Display
Actuator 2 Fault E
Actuator 3 –
Actuators 1 and 4 Fault code two-digit decimal