SERVICE MANUAL

COOKERS

Built-in hobs
Induction
„TEIS“

© Electrolux Distriparts Publ.-Nr.:

Muggenhofer Straße 135 599 525 284
D-90429 Nürnberg 685
Germany EN

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DGS-TDS-N
Edition: 02.06
Inhaltsverzeichnis

1. ESD=electrostatic discharge ............................................................................ 3

2. Software specifications, Functions ................................................................... 4

2.1 Sample illustration: Induction hob ...................................................................... 4
2.2 Control panel ..................................................................................................... 4
2.3 Symbol,display and keys explanation ................................................................ 5
2.3.1 Touch control sensor fields ............................................................................... 5
2.3.2 Displays ............................................................................................................ 5

3. Functions of appliance ...................................................................................... 6

3.1 Basic functions/Child safety/Power-function ..................................................... 6
3.2 Safety cutoff ...................................................................................................... 7

4. Functional parts - Component data, installation situation, ................................. 8

dismantling ........................................................................................................ 8
4.1 General view ...................................................................................................... 8
4.2 Contact switch and input electronics (UI) .......................................................... 9
4.3 Induction coil .................................................................................................... 10
4.4 The induction module ...................................................................................... 11

5. Alarm Symptoms ............................................................................................ 12

5.1 Appliance not functioning at all, cannot be switched on .................................. 12
5.2 Individual cooking zones do not work (partially) or work incorrectly or
cannot be used ................................................................................................ 13
5.3 Alarm message „E“ ......................................................................................... 14
5.4 Other Alarmsymptoms .................................................................................... 15
5.5 Connection guideline ....................................................................................... 16
5.6 Display ............................................................................................................ 17
5.7 Inductions module test .................................................................................... 17
5.8 Pot identification information ........................................................................... 18
5.9 Touch Control Cooking Hobs Information ........................................................ 19
5.10 Demo mode / Self test (Service mode) / Alarm Menu ..................................... 20

6. Wiring diagrams .............................................................................................. 21

6.1 Example-slotted plan ....................................................................................... 21
6.2 Example-circuit diagram ................................................................................. 22

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1. ESD=electrostatic discharge
As the single electronic interfaces are not protected internally against statical electricity and are
partially open, you must pay attention to that, in case of a repair, there will be a potential
compensation via the housing of the appliance (touch it) in order to neutralize a possible
charging and to prevent a damaging of the affected electronic interface.

You also have to be careful with those electronics delivered as spare parts, which have to be put
out of the ESD protective package only after a potential compensation (discharge of possible
statical electricity).

If a potential compensation with an existing static electricity is not executed, it does not mean
that the electronic is demaged directly. Consequential damages may result due to the damaging
of internal structures which arise only in case of load through temperature and current.

Endangered are all assembly groups which are provided with control entries, wire paths lying
open and free-accessible processors.

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2. Software specifications, Functions
2.1 Sample illustration: Induction hob

2.2 Control panel

The symbol of the Touch control sensor field depend on the various brands, however their
functions are the same.

Display Cooking Zone displays, Timer Function

Cooking level selection Timer Display

Timer Power function

On/Off with control lamp Interlock

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2.3 Symbol,display and keys explanation
2.3.1 Touch control sensor fields

Sensor field Function

On/Off Appliance On and Off connection

increase settings Increase cooking level/time

reduce settings Reduce cooking level/time

Timer Timer choice

Interlock Control panel lock/unlock

Power Power function Switch on/off

2.3.2 Displays

Display Description

Cooking area is switched off

Cooking levels Cooking levels are set

Fault Function failure occurs

Pot detection Cooking tablewear is unsuitable or too

small and/or it is not put on.

Residual heat Cooking area is still warm

Child safety function Interlock/Child safety is on

Power Power-function is switched off

Safety cutoff Safety cutoff is active

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3. Functions of appliance
3.1 Basic functions/Child safety/Power-function

Control panel Display/signal

Switch on/off the appliance

Switch on ( I ) Touch for 2 seconds "0"/"H", Control lamp lights up

Switch off ( I ) Touch for 1 second "H"/none, Control lamp turns off

After switching on, a cooking level or a function has to be set within 10 seconds,
otherwise the appliance switches off automatically.

Set cooking level

Boost ( + ) Touch "1" to "9"/"P"

Minimise ( - ) Touch "9" to "0"
Switch off Touch ( + ) and ( - ) simultaneously "0"

Locked/unlocked control panel

Switch on Touch (lock) "L" (for 3 seconds)

Switch off Touch (lock) Pre-set cooking level

When switching off the appliance, the lock will switch off automatically.

Switch on the childproof lock

Step 1 ( I ) Switch on the appliance "0"

Step 2 Touch (lock) until the signal sounds Acoustic signal
Step 3 ( + ) Touch "L"

Appliance swiches off. The childproof lock is switched on.

Override the childproof lock

Step 1 ( I ) Switch on the appliance "L"

Step 2 Touch ( + ) and ( - ) simultaneously "0"/Acoustic signal

Appliance can be used regularly till the next deactivation of the appliance.
The childproof lock can therewith be switched off for an isolated cooking act;
afterwards it remains active.

Switch off the childproof lock

Step 1 ( I ) Switch on the apparat "L"

Step 2 Touch (lock) until the signal sounds Acoustic signal
Step 3 ( - ) Touch

Appliance switches off. The childproof lock is switched off.

Switch on/off power function

The power function ( P ) provides additional capacity for the leading induction cooking zone, e.g. to bring water to boil quickly.
The power function will be activated at the cooking zone, u front and to the left, in 8 minutes, and at thecooking zone, up front and to the right, in 5 minutes.
After this the induction, the cooking zone switches automatically back to cooking level 9. If the power function stops,
the cooking zones change back automatically to the pre-set cooking level.

Switch on ( P ) Touch "P"

Switch off ( P ) Touch "P"
( - ) Touch "9"

Power Management

The cooking zones have a maximal capacity. If this service type exceeds by switching on the power function, the power management
reduces the cooking levels to another cooking zone. The display of this cooking zone changes betwee the pre-set and maximum
possible cooking level for one minute. Afterwards the actual cooking level will be indicated.

Example:

Cooking zone most recently switched on Other cooking zones

Set cooking level Set cooking level Display/actual cooking level
"P" 9 6 alternately with 9/6

If the power function stops, the cooking zones change bac automatically to the pre-set cooking levels.

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3.2 Safety cutoff

Cooking field: - If you do not set a cooking level in a cook zone within approx. 10 seconds
after switching on of the cook field, the cook field switches off
automatically.

- If one or more sensor fields are covered longer than 10 seconds, e.g. by
a pot placed on it, a signal sounds and the cook field switches off
automatically.

- If all cook zones are switched off, the cook field switches off
automatically approximately 10 seconds later.

Control panel: Humidity (e.g. a wet cloth) or over-cooking liquid on the control panel switches all
cook zones off immediately.

Induction cooking zones: - During overheating (e.g. an empty-cooked pot) the cook zone switches
off automatically. „- “is displayed. Before renewed use the cook zone
must be set to „0 “and be cooled down.

- If suitable table-ware is used, „F“ flashes in the display and after 10

minutes the display of the cook zone switches off.

- If one of the cook zones is not switched off after a certain time or if the
cook stage is not changed, the appropriate cook zone switches off
automatically.

cooking level The cooking zones are disconnected with:

1-2 6 Hours
3-4 5 Hours
5 4 Hours
6-9 1,5 Hours

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4. Functional parts - Component data, installation situation,
dismantling
4.1 General view

Contact switch and

holding frame UI Insulation

Sensor plate aluminium

Input electronic (UI)
Sensor
Insulation

Induction coil

Support spring

Module of induction

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4.2 Contact switch and input electronics (UI)

The contact switch is glued directly on the glass ceramic and over a foil conductor connected
with input electronics. The UI is fixed in a plastic framework, which is also glued directly onto on
the glass ceramic.

Fig. 1 Fig. 2

The trough framework is screwed onto the trough bath with star Torx TX20 screws. Before the
glass ceramic can be removed after the complete loosening of the star screws, it must be lightly
raised at the front, so that both 3-pole connection cable input electronics/ induction module can
be taken off (fig. 1).

Fig. 3

Input electronics are configured and provided with a standard software. After extracting from the
holding frame and taking the foil conductor off input electronics can be removed.

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4.3 Induction coil

The spare part induction coil consists of the coil body, the white insulation and a coil holder.

Fig. 1

Fig. 2 Fig. 3

The induction coils are held with springs, which must be locked into the induction module carrier
(fig. 1). The nominal reduction rates in the trough (fig. 3) serve as position indicators.

Performance table

Chosen % of the maximum Cooking zone Cooking zone Cooking zone

cooking level performance 140mm 180mm 210mm

1 3.0% 42 54 66
2 5.5% 77 99 121
3 10.5% 147 189 231
4 15.5% 217 279 341
5 21.0% 294 378 462
6 31.0% 434 558 682
7 45.0% 630 810 990
8 64.0% 896 1152 1408
9 100.0% 1400 1800 2200
P 2800 2800

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4.4 The induction module

Fig. 1

With this series the induction modules are implemented as double modules, i.e. an induction
trough with four induction cook places has 2 induction modules (fig. 1). The induction module is
provided with a standard software and does not have not to be programmed.

Fig. 2 Fig. 3

The induction module of the trough is held with four sheet metal noses (fig. 2), in each case two
above and below, which are led through the induction module carrier and interlocked afterwards.

Technical data

Main voltage: 230V

Rated frequency: 50/60Hz
Max. output: 3.6kW
Output per cooking area max.: 2.8kW
Total output: 3.6kW
Ambient temperature max.: T85

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5. Alarm Symptoms
5.1 Appliance not functioning at all, cannot be switched on

Alarm Cooking Possible Alarm Alarm Remedying

Symptom Hob Cause
Display
House fuse None Incorrect connection at Test the pin assignment and
triggered the power connection 230VAC between N , Lines and
terminal. earth on the supply line.
Final induction phase See chapter Testing Power
defect. Component
Cooking No mains voltage or Test the pin assignment and
field cannot incorrect connection (1 230VAC , Neutral, Line(s) and
be switched phase missing ->no earth. Both of the "N“s should be
on. control voltage; N not connected to wall terminals.
connected to terminal 4
and 5 not connected)
Connector of the cable to Test connector at the filter and
the Touch Control Touch Control. Reapply the mains
/Display not inserted. voltage.
Fuse strip conductor burnt See Chapter Testing Power
out and/or final induction Component
phase defect
Touch control defect. If 5VDC exist and power
component already replaced:
replace the UI. Ensure that the
Touch pcb is well glued to the
glass, and that the connection wire
is well inserted.

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5.2 Individual cooking zones do not work (partially) or work incorrectly or cannot be used

Alarm Symptom Cooking Possible Alarm Alarm Remedying

Hob Cause
Display
Pan does not Normal cooking Pan in the border area of the pan Use different pot or this pot
heat up. phase detection and only works with low on a smaller hob. See
power Chapter Pot Detection
Information
Flashing Pan not detected. Check whether the pots or
"F“ pans are suitable for
induction. See Pot Detection
Information
Coil not correctly connected. Check whether the coil lines
are connected and the torque
has been adhered to.
Distance between coil and glass Check whether the coil is
ceramic too large. applied to the glass ceramic
and whether the glass was
pushed was pushed down
when screwing in position.
No power on all Normal cooking Demo mode activated. See Chapter demo mode
hobs phase
Individual buttons Touch Control defect. 1) See Chapter 5. Touch
cannot be used Control Cooking Hobs
or cannot always Information.
be used. 2) Should this not help,
replace Touch Control.
Cooking hob Normal cooking Incorrectly installed, exhaust not See chapter installation
power too low or phase possible to the front. situation.
not provided for a Unsuitable pots (bottom bent) See Chapter Pot Detection
longer duration. Information
Induction coil is not applied to the glass Check whether the glass
ceramic ceramic was pushed down
when being screwed in
position and the coil has
been correctly positioned.
Fan does not start. 1) When setting a cooking
phase >0, the fan runs at a
slow speed. If not, check the
fan for foreign bodies,
remove these where
appropriate.
2) If necessary, replace fan.
3) Should this not succeed,
replace power component.

"H" in display "H“ Temperature sensor defect. Replace corresponding coil

when cooking with temperature sensor.
hob and oven Also see Instructions "E4“.
cold and
switched off.

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5.3 Alarm message „E“

When the appliance is switched on, „E“ / „xx“ Alarm Number is displayed in the timer display.
The affected zones are subsequently displayed with an „E“ in the cooking phase display and are
thereby disabed. The other zones can still be used.

Example:
1) Error code 8 for the left board

Alarm Display in Possible Alarm Alarm Remedying

Symptom the Cooking Cause
Hob Timer

Alarm display "E2“ User interface temperature Temperature too high due to
in the Touch too high installation, or UI defect.
Control.
"E3“ 400 VAC detected, instead 1) verify power lines connection,
of 230VAC, on left or right on the wall
module or both 2) Should alarm still be
displayed, verify internal
connection in the hob,
3) Should alarm still be
displayed, See Chapter Testing
Power Component
"E4“ Coil temperature sensor 1) Inspecting the contacts on
defect, not correctly the power board. Is the
connected, or broken, connector inserted?
display in the corresponding 2) The resistance at room
zone. temperature (25°C) amounts to
100 kOhm. If not in this range,
replace affected temperature
sensor.
3) Should above not succeed,
replace power component
concerned.
"E5“ Coil temperature sensor 1) Inspecting the contacts on
defect, short, display in the the power board.
corresponding zone. 2) The resistance at room
temperature (25°C) amounts to
100 kOhm.If not in this range,
replace affected temperature
sensor.
3) Should above not succeed,
replace power component
concerned.

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 Alarm Display in Possible Alarm Alarm Remedying
Symptom the Cause
Cooking
Hob Timer

"E6“ Communication defect Replace identified power board.

inside power board
"E7“ “7.” Alarm Temperature E7, verify connector, if not OK,
sensor heat sink power Replace affected power component.
component E7 open E7. Replace affected power component.
E7. short
"E8“ Communication 1) if left, Verify the power wiring in the
interference between wall. If OK, Reinsert connector of UI,
power and User Or replace cable. If not OK go to 3)
interface. 2) if Right, Verify middle connection of
cable of UI, replace cable, if not OK go to
3),
3) take cable of left power board and
connect to right power board, with a test
cable longer connect UI right to power
board left. A) same as before change
User interface, “E6” crossed change the
power board identified.
"E9“ Communication defect Replace User interface.
inside user interface

5.4 Other Alarmsymptoms

Alarm Symptom Display Possible Alarm Remedying

Alarm
Cause
Buzzer defect Touch Replace User interface.
control
defect.
Individual display Defective Replace User interface.
elements do not display
illuminate or do not elements
do so continuously.
Pots cause noises Unsuitable See Chapter Pot Detection Information.
pots.
Normal Interference noises result from the high
sound level working frequency of the induction. This can
vary from pan to pan. When measured in
operation pursuant to EN60335 §11-3
pursuant to EN60704 with 4 pots <47dBA. A
pot with boiling water has approx. 60-62dBA.

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5.5 Connection guideline

Power cords inside the hob

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5.6 Display

For details, refer to Instruction Manual - Cool top platform

Symbol Comment
„.“ Intermediate cooking levels
„-“ Induction – zone switched off because of over temperature at the coil sensor
(empty pot)
„A“ Fast heating up function („Ankochstoss“)
„E“ On alarm display see error!
„F“ Pot detection – no pot detected
„H“ Residual heat indication
„L“ Lock – Function or key lock
„P“ Power (booster) function for induction

5.7 Inductions module test

1. When alarm messages and disabled zones exist (“E“ in cooking phase display), please
make a note of the power component which is affected.

2. Check power lines and connection to user interface is connected,

3. If IGBT has become shorted, this normally means that the IGBT housing is damaged.
Replace power component.

4. Measure resistance at the IGBTs

Pin1-Pin2 or Pin2-Pin3 >50kOhm f Okay
<50Ohm f power component defect & replace
Only replace the affected power component.

„IGBT“

Pin 1 2 3

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5.8 Pot identification information

Suitable pot materials:

- Steel enamel
- Stainless steel (with magnet. bottom)
- Aluminium (with magnet. bottom)
- Cast iron

Unsuitable materials:
- Aluminium (à too much power)
- Copper
- Stainless steel (not magnetic)
- Glass
- Ceramic

The pot detection is designed for the following diameters:

Nominal burner ∅ [mm] Minimum pot bottom ∅ Minimum pot bottom ∅

instruction manual [mm] adjusted with steel plate
[mm]
145 125 100
180 145 120
210 180 140

With regard to Ind. G4, the same diameter is stipulated in the

instruction manuals as for the previous model. However, the
real diameter which still functions is much smaller.
The performance for different pots can very by as much as +/
- 10-15%.

- As reference pots, we recommend enamelled steel pots

(e.g. Silit).

- 2-3 mm thick round steel plates in various diameters are

very suitable for testing the pot detection function.

- Sandwich bottoms can cause very unpleasant noises if

they are not correctly pressed. The same is the case
with regard to handles which are a little loose.

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5.9 Touch Control Cooking Hobs Information

- The Touch Control works on the basis of the capacitive principle, an amortizing mass is
detected, the signal modified is treated with some rules and validated as an action.

- If the user interface is not applied to the glass ceramic, the signal for the button evaluation
is much smaller and the buttons can no longer be used, i.e. always ensure that the plastic
supports are always intact.

- Should the appliance switch itself off without the glass ceramic having been touched, this
is due to a button being activated. Either external water or material on the glass.

Instructions on the operation / possible operation errors if the buttons do not function:

- Please do not approach slowly, especially not from the side, it is better to approach the
button faster. A signal change is above all evaluated.

- Applying excessive pressure to the cooking hob will not make a difference. It is better to
release it for 5 sec. and then press the button again.

- If the adjustment of the cooking stage/timer does not continue after the button has been
released, this is due to the fact that the Touch Control receives a „Button Pressed“ signal
even from a distance of some mm.

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5.10 Demo mode / Self test (Service mode) / Alarm Menu

To enter the Demo mode / service mode / factory test menu , the following sequence of buttons
must be pressed:

1. Hob is off. Press main switch continuously until display is going off (without beep).

2. Press the „+“ and „ -“ buttons (2a) of both front zones together (all 4 keys togehter ) for
about 3 seconds (-> short beep).

3. Press the timer selection key (-> again short beep).

4. The display (C) shows a “d” for demo mode. If you press the timer select key again you
switch to “S” for service mode, another presee gets you to “E” the alarm menu!

5. By pressing the button “+” of a cooking zone you activate the menu.

6. By pressing the button “-“ of a cooking zone you deactivate the menu.

Demo Mode:
If demo mode is activated the display with the „d“ shows additionally a dot. After selecting the
demo mode, the electronic goes to off. Now it can be used like usual but only without heater
activation. The deactivation of the demo mode is done in the same procedure as activating. After
deactivating the demo mode the electronic must go off. Now the hob can be used in normal
mode.

Service Mode “S”

Routine:
1. Show user interface SW version
2. Show control SW version
3. Show power SW version
4. 400V detection test: “400U” blink on displays until 400V is not applied. When 400V is
detected, the buzzer ring and “OU” is shown on display until 230V is not applied.
5. Test all LEDs / Displays for 7 sec; during this time, booster is set on rear zones to test
sensors. When the time is elapsed, if the sensor are OK the test jump to the following step
otherwise “S” is shown alternatively on zones where the error occurred.
6. Zone power test: a different power level is set on each zone for 2 seconds

Alarm Mode “E”

The last 5 stored alarm codes (if >o) are displayed like an actual alarm, each for 5 sec., starting
with the oldest (read request ‘5’ Alarm code message) to the newest (read request ‘1’).

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6. Wiring diagrams
6.1 Example-slotted plan

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6.2 Example-circuit diagram

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