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Induction Cooktop (Yakomoz Touch Control)

SERVICE MANUAL

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3. SERVICE WARNINGS ................................................................................................ 3

3.1. Symbols and Explanations .................................................................................... 3

4. TECHNICAL PROPERTIES ........................................................................................ 4

5. PRODUCT ASSEMBLY/ASSEMBLY RULES/SETTINGS ........................................... 5

5.1 Installation ............................................................................................................. 6

5.2. Electric Connection ............................................................................................... 6

5.3 Connection of the Electric Cable ............................................................................ 6

5.4. Mounting the Product to Place .............................................................................. 7

5.5 Last Check ............................................................................................................10

5.6 Tips About Glass Ceramic Hobs ...........................................................................11

5.7 Saucepan Selection ..............................................................................................12

5.8 Safe Use ...............................................................................................................12

6. COMPONENT LİST ....................................................................................................14

6.1 Main board ............................................................................................................15

6.1.2 Function of main board ...................................................................................15

6.1.3 Specifications .................................................................................................15

6.2 Filterboard .............................................................................................................16

6.2.1 Function ..........................................................................................................16

6.2.2 Properties .......................................................................................................16

6.3 SMPS Card ...........................................................................................................16

6.3. Function ...............................................................................................................16

6.3.2 Properties .......................................................................................................16

6.4 Touch Operated Control Board .............................................................................17

6.5 Induction Coil ........................................................................................................19

7.Servıce Mode ..............................................................................................................21

8.Error Codes .................................................................................................................21

9.Diagrams of Finding Errors ..........................................................................................24

10. COMPONENT MOUNTING/ DISMANTLING ............................................................33

10.1 Changing Vitroseramic Glass ..............................................................................36

10.2 Changing Heater Coils ........................................................................................36

10.3 Replacement Touch Control Card .......................................................................39

10.4 Modification of hob Cable ....................................................................................40

10.5 Modification of induction Motherboard .................................................................42

10.6 Power Card to be replaced ..................................................................................43

10.7 To be replaced Cooling Fan ................................................................................44

10.8 If the mains cord to be replaced ..........................................................................45

11.Exploded vıew ...........................................................................................................46

12.Servıce part ...............................................................................................................46

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3. SERVICE WARNINGS

3.1. Symbols and Explanations

Important information’s or useful hints about usage

Warning against a dangerous condition in terms of lives and property

Warning against electric shock

Warning against fire

Warning against hot surface

Electric connection should interrupted during the installation maintenance cleaning and

repair process.

After maintenance or clenaning operations, be careful not to break, jamming gas hose

and connection cables during placement.

Built in hob chips should be available for socket.

Do not make any changes on the chip.Unaltered chips and appropriate sockets will

reduce the risk of electric shock.

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4. TECHNICAL PROPERTIES

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5. PRODUCT ASSEMBLY/ASSEMBLY RULES/SETTINGS

The hob is designed for installation into commercially available work tops. A safety distance must be left between the appliance and the kitchen walls and furniture. See figure (values in mm).

• It can also be used in a free standing position. Allow a minimum distance of 750

mm above the hob surface. • (*) If a cooker hood is to be installed above the cooker, refer to cooker hood

manufacturer' instructions regarding installation height (min 650 mm) • Remove packaging materials and transport locks. • Surfaces, synthetic laminates and adhesives used must be heat resistant (100 °C

minimum). • The worktop must be aligned and fixed horizontally. • Cut aperture for the hob in worktop as per installation dimensions.

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5.1 Installation

The product must be installed in accordance with all local gas and electrical regulations. Do not place the radiant built in hob corners and edges.

5.2. Electric Connection

Connect the product into an outlet protected by a fuse, appropriate to the ‘’Technical Features’’ table. • Electric cable damage can cause electric shock, short circuit or fire hazard. • Electric cable should not crushed, should not put up or should not compress or should not touch hot parts. • If the electricity cable damaged, it should changed by an qualified electrician. • Connection must be compatible with national procedures.

Network supply data should be the same with the type of product label.

Product type label is behind the back preservation of product. • Products connection cable should be appropriate with the ‘’Technical Features’’ table. Electric shock hazard. Please disconnect the electric conncetion before working on the electric installment

5.3 Connection of the Electric Cable

1. If separating all the poles is not possible on the network feeding, separation unit (fuse, line safety switch, contactor) which has 3 mm contact distance should connect and all the poles of this separation unit should not be above IEE instructions. Additional protection provides by using residual current circuit breaker.

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If a cable is given with the product:

2. For single phase connection, connect the cables just like that specified below: • Brown cable= L (phase) • Blue cable = N (neutral)

• Green/Yellow Cable = (E) (Grounding) 3. For two-phase connection, connect the cables just like that specified below: • Brown cable = L1 (phase 1) • Black cable = L2 (phase 2) • Blue cable = N (neutral)

• Green / yellow cable = (E) (Grounding)

5.4. Mounting the Product to Place

If the oven is below:

* min.

If the board is below:

It is required to leave a ventilation opening of minimum 180 cm2 at the rear section of the

furniture as illustrated in the following figure.

2N AC 380-415 V

1N AC 220-240 V

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* min.

During installation of your induction hob, place the product parallel to the installation surface. Also, apply sealing gasket to the parts of the hob contacting the counter as described below in order to prevent any liquid from penetrating between the product and the counter. 1. Prepare the surface of the counter as shown in the figure. 2. Turning the hob upside down, place it on a flat surface. 3. The sealing gasket provided in the package must be applied on the lower casing bend

around the hob as shown in the figure, during installation of the hob.

4. Fix the mounting springs inserting and screwing them through the holes of the bottom case as shown in the figure.

5. Place the hob on the counter and align it. 6. When the hob is placed on the counter top it will be fixed easily with the help of the

clamps. If the counter top dimensions are in appropriate, 2 mounting clamps can be fixed to the front side of the product as shown in the below figure.

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1 Hob

2 Installation clamp

3 Counter

For example, if it is possible to touch the bottom of the product since it is installed onto a drawer, this section must be covered with a wooden plate.

* min. 15 mm

Rear view (connection holes)

Final check 1. Connect the power cable and switch on the product's fuse. 2. Check the functions.

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5.5 Last Check

1.Plug in the electric cable and turn on the devices fuse. 2. Control the functions.

3. Bench

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5.6 Tips About Glass Ceramic Hobs

Glass ceramic surface is heatproof and is not affected by big temperature differences. • Do not use the glass ceramic surface as a place of storage or as a cutting board. • Use only the saucepans and pans with machined bottoms. Sharp edges create scratches on the surface. • Do not use aluminum vessels and saucepans. Aluminum damages the glass ceramic surface.

Spills may damage the glass ceramic surface and cause fire.

Do not use vessels with concave or convex bottoms.

Use only the saucepans and pans with flat bottoms. They ensure easier heat transfer.

If the diameter of the saucepan is too small, energy will be wasted.

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5.7 Saucepan Selection

For induction hobs, use only vessels suitable for induction cooking. Saucepan test Use following methods to test whether your saucepan is compatible with the induction hob or not. 1. Your saucepan is compatible if its bottom holds magnet. 2. Your saucepan is compatible if "" does not flash when you place your saucepan on cooking zone and start the hob.

5.8 Safe Use

Do not select high heating levels when you will use a non-sticking (teflon) saucepan with no oil or with very little oil.

Do not put metal items such as forks, knives or saucepan covers onto your hob since they can get heated.

Never use aluminum folio for cooking. Never place food items wrapped with aluminium folio onto the cooking zone.

If there is an oven under your hob and if it is running, sensors of the hob can decrease the cooking level or turn off the oven.

When the hob is running, keep items with magnetic properties such as credit cards or cassettes away from the hob.

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The Positive Sides of Induction Cooktop;

High-Speed Heating The most important side of induction heating is transferring heat to heated material with

high speed and precision. Heating Without Loss The major part of the heat is transferred to the pot through magnetic field directly with

induction heating. However, at gas or conventional electric heaters (including halogen), first electric energy is converted to thermal energy then thermal energy is directed to the pot. But meantime, without transferring major part of the energy to the load, it warms up the environment. It is certain that the heated pot and food will radiate and heat the environment as well. The induction heating method will increase the temperature of the environment less as compared with other gas and electric heating methods.

Safe Heating Induction heating, pursuant to its working principle, heat only the ferromagnetic materials.

Since cooktop surface is only heated by the heat transmitted by the bottom surface of the pot, cooktop surface will be cooler and safer. Besides, thanks to the sensors which are measuring the temperature of the surface of cooktop cells, the system will be operating in safe mode when a pot is forgotten on the cooktop or there are such cases like oil ignition etc.

Pot Detection By the help of its pot detection feature, when a pot is put on a cooktop cell, energy is

conserved by not heating the cooktop cell unnecessarily.

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6. COMPONENT LİST

induction hob is consist of following parts.

Cover plate

Main board (Induction generator)

Filter board

Cooling fan

Touch control board

Coils

Ceran glass

Figure1: layout of Induction hob

Figure1: layout of Induction hob

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6.1 Main board

6.1.2 Function of main board

-Rectify mains -Induction generator. High frequency AC current is generated. -Mictocontoller control block -18V for IGBT driving, 12V for touch control supply and 3,3V for internal microcontroller.

6.1.3 Specifications

Main board is consist of IGBT,electronic components,heatsink. There are two

microcontroller. Master one controls left hand side cooking zones. Slave one controls right hand side zones.

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6.2 Filterboard

Picture-3 Placement of components of filterboard

6.2.1 Function

It protects other electronic components from mains fluctuation. It prevents the mains from being affected by noise originated induction.

6.2.2 Properties

Power boards include filter components. After filtering the mains, it is given to motherboard with mains connectors belonging to motherboard.

6.3 SMPS Card

6.3. Function

It protects the other electronic components from mains fluctuations. It prevents the mains from being affected by noise originated induction. At the same time, it provides 6.5V and 12V DC voltages that are necessary for motherboard.

6.3.2 Properties

Power boards include filter components. After filtering the mains, it is given to motherboard with mains connectors belonging to motherboard. At the same time, with its SMPS block, SMPS board provides DC voltage that is necessary for motherboard..

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6.4 Touch Operated Control Board

Schema 4 Structure of Touch Operated Control Card

GRUNDIG UI Board

GRUNDIG OnOff Board

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BEKO UI Board

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6.5 Induction Coil

Function Induction coil is a component which is placed under vitroceramic glass and provides to

induct magnetic field in a pot. In the cooktop, there are total 2 coil groups. Each coil group consists of 2 coils.(In some models, there can be only one big coil. )

Properties

Induction coils, from bottom to top respectively, consist of cores which are guiding the magnetic field, isolation purposed mica, winding, silicone support for air gap and mica, totally five layers.

Aluminium plate which is placed under coils limits the effects of magnetic field on the electronic circuit..

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6.6 Fan

Fonctıon Provides cooling of electronic components. Especially for switching elements. Properties

It runs 12V DC voltage, 5.4W power.

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7.Servıce Mode

After pressing on/off button and opening the hob, one must be enter into service mode in 10 seconds.

7.1 SW verison of OnOff board. Switch to next page by touching pause button.

Verison is = 1.38 in the example below

8.Error Codes

7.2 SW verison of UI boards. . Switch to next page by touching pause button. Left UI Verison is = 3.28 in the example below Right UI Version is = 3.27 in the example below

7.3 SW verison of Induction boards. . Switch to next page by touching pause button.

Left Induction Board SW Verison is = 3.28 in the example below Left Induction Board SW Verison is = 3.27 in the example below

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7.4 Coil Configuration of induction boards. . Switch to next page by touching pause button.

145 mm coil :"4"

180 mm coil:"8"

210 mm coil:"1"

280 mm coil: "2"

280 mm duo coil:"d"

7.5 Error Codes displayed in service mode

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WARNING: Before making any controls disconnect hob from electricity.

Table 1:Error codes

INDUCTION KEY ERRORS

ERROR CODES COUSES COMMENTS

E1 Coil NTC Sensor Error Check socket and cables of Coil NTC

sensor. If the error still exists, change coil or related motherboard.

E2 Heatsink NTC Sensor Error Check socket and cables of coil

Heatsink sensor. If the error still exists,

change motherboard.

EI Motherboard and touch-

operated conrol boards can not communucate.

Check socket and cables of data cables. If the error still exists, change data cable group or motherboard.

E4 Permanent NTC error Check socket and cable of coil NTC

sensor. If the error still exists, change coil or related motherboard.

E5 Empty vessel detected. Wait fort he cooktop to cooldown. Turn off the cooktop and turn on again.

EP No Mains. Check whether there is voltage

comming through induction boards. Fuse of the Filter board may be open circuited.

EI Motherboard and touch-

operated conrol boards can not communucate.

Check socket and cables of data cables. If the error still exists, change data cable group or motherboard.

EC OnOff board cannot

communicate with UI boards.

Check cable between onOff board and UI boards. If the error still exists, change data cable or onOff board or UI boards in sequence.

F-F-F Closer pot detected. Remove

the object/vessel from touch control pannel

Closer pot detected. Remove the object/vessel from touch control pannel

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9.Diagrams of Finding Errors

WARNING: Before any control, cut the electric connection of the product. Wait at least 20 seconds. None of Light Touch Control Card

No light at touch-control card.

Check mains voltage of cooktop.

Is there power?

Check wire connection of cooktop. Is there any connection

problem?

Cut the electric connection.Open glass of cooktop according to instructions.

Check fuse of SMPS boards and filter of the cooktop.

Adjust Multimeter to Ohm stage or aural warning.

Control voltage between two points as shown in

look at picture 1.

When resistance is not detected or there is no aural warning it is clear that the fuse is blown.

Is fuse blowing? Look at Picture 1.

The reason of blowing of fuse may be short circuit in motherboard. Check whether there is any short

circuit on legs of bridge diode and induction board on the of blowing fuse.

Look at picture 3.

Is there any short circuit at IGBT and bridge diode? Look at Picture 4.

Change SMPS or Filter board according to

instructions.

Change the induction motherboard and related SMPS or filter board both filters

according to instructions.

Check cables which are located in cooktop. Is there any

short circuit at cables?

Change cables.

Yes

No

Yes

No

Remove blue-white cable as shown in picture. Switch cooktop on.

Check 12V output is located connector of SMPS card. Is there 12 Volt?

Look at Picture 2.

Is there 12 Volt at socket of touch-card?

Look at Picture 3.

Change touch-card.

Change SMPS card.

No

Check cables and sockets which are connected with touch

card. Is there any problem?

No

No

Change in Induction Motherboard which is located at right side.

Change cables.

Yes

No

No

Induction motherboards can be damaged because of over heating when fan is not

working or inefficient ventilation. Check the fan.

If fan is not working, Is 12V measured from socket

of fan when the cooktop turn on first time. Look at picture 5.

Change fan.

Yes

Change left induction

motherboard that run the fan.

No

Yes

Yes

Yes

Yes

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Smps and Power card can show diversity.

Insurance points displayed image is checked. If the fuse resistance is read.

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Resistance is measured between first and third leg from left of switching components with ohm mode of avometer.

Resistance has to be about 9 kΩ-10kΩ between two legs of switching components (IGBT) (shown in Picture 3). Otherwise, switching component is defected. Motherboard should be changed with related directions.

Multimeter is set diode mode for checking short control of bridge diode. Bridge diode is

measured

Between ~ and + legs and

Between ~ and - legs.

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When measuring between legs, + and - probes of multimeter are touched same 1111legs with exchanging their places. Multimeter should measure a value for one direction and should not measure any value for other direction when touched these two legs.

If a value is read from multimeter for both directions, it means that diode bridge is short circuited.

Any situation of short circuit of the product, board is protected with fuse path on PCB

from damage of installation that the product tied to and the product. Any motherboard error can cause defecting of fuse paths on filter board. Fuse paths should be checked at specified points on filter board.

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Touch-Operated Always Give F-F-F-F Error

F-F-F-F error is on touch-operated control board continuously.

(same or pressing more then one sensors at the same time error)

Is glass surface of touch-operated control part clean?

Clean glass surface

no

Which type of touch-operated control board is using on the

cooktop?

Check steam level of ambiance.

Artouch

(Capacitive sensor)

yes

Is there any steam in the ambiance?

Wait until steam get lost. And turn

on the cooktop again.

(you can clean the glass from under

after opening the glass) yes

Open glass of the cooktop? Is there any damp under the glass?

no

Clean under the glass and turn

on the cooktop yes

Be sure that sensor springs contact the glass completely under the glass. Does

springs contact the glass?

Is there any fouling between PCB lines on touch-operated board?

no

yes

Change the touch-operated board.

Make the springs contact to glass completely and tun on the

cooktop againno

Get rid of fouling and short circuit and turn on the cooktop again.

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Induction Cooktop Does Not Heat

Induction cooktop does not heat.

(Light of indicator is light but no heating)

Is there induction compatible Sign on underneath of the pot? Does

a magnet is stick to underneath of the pot?

Be sure that induction compatible pot is been using

Suitable cell and suitable diameter using is advised.

Change the pot and try again.

no

Enter service menu of the cooktop according to instructions. Inform the

error code from error page.

Enter the error page twice for learning current error.

Is any error code shown on the screen cooktop?

yes

Look error page or related finding error

diagram.

Is service menu of the cooktop entered according to instructions?

yes

Is error code on service menu, error page?

Turn on the cooktop. Check cable connection of induction

motherboards. If it need, change induction motherboards.

noyes

noyes

no

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E1 Error There is E1 error on the cooktop

Coils of the cooktop heat detector are run in case of open circuit and short circuit. Heating is not made on related cell

An error is shown on user interface of Hitit G1.

The error is shown on service mode instead of

user interface Hitit G2 cooktops.

Cut the power of cooktop and remove glass of cooktop.

Take off socket of coil NTC from its place and measure NTC value with ohm mode of avometer. (Look at picture 2) measuring is made on pins of the socket.

Check NTC cable

and socket of coil.(Look at picture 1)

Is there any problem on

sockets or cables?

Correct connection of socket and cable, and plug in the board. Turn on the cooktop again.

Yes

Measured value must be about 48Kohm for Hitit coils G1 cooktops and about 100Kohm for Hitit

G2 coils at 25°C. Is the value suitable?

No

Check whether any dirt is on NTC circuits on induction motherboard.

If it needs, change induction motherboard according to instructions.

Change the coil group according to instructions.

No

Yes

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E2 Error

There is an E2 error on the cooktop

Induction motherboard cooler NTC run in case of open circuit and short circuit . Heating is not made on related cells.

An error is shown on user interface of Hitit G1.The error is shown on service mode instead o fuser interface On Hitit G2 cooktops.

Cut the power of cooktop and remove glass of cooktop.

Take off socket of cooler NTC from its place and measure NTC value with ohm mode of avometer. (look at picture 2) measuring is made on pins of the socket.

Check cable and socket

of cooler NTC . (look at picture 1)

Is there any problem on

sockets or cables?

Correct connection of socket and cable, and plug in the

board. Turn on the cooktop again.

Yes

Measured value must be about 9Kohm-12Kohm at 25°C. Is the value suitable?

No

Check whether any dirt is on NTC circuits on induction motherboard.

If it needs, change end motherboard according to instructions.

Change cooler NTC

No

Yes

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E5 Error

There is an E5 error on the cooktop

If there is an empty pot on the cooktop,the pot is heated

instantly.inductior cooktop determine itand stop heating.It is

not a permanent error

It is not a permanent error. Wait until cooktop get

cold and turn on it by pressing on/off button again

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EC Error

There is an EC error on the cooktopCommunication Between OnOff board and UI board is

lost

Remove the glass. Check or change the cable between OnOff board and UI board.

Change OnOff board and try. If error doesnot disappear. Flow next step

Change UI board

UI BoardUI Board

OnOff Board

Cable

!!!!! Ensure that the cables are not between the induction coil and glass while mounting the glass to

the hob infrastructure.

Cable Part Number = 266.1002.55 for 60cm hobs. Check for part number list for proper order.

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EI Error

There is an EI error on the cooktop

It is a connection error between touch-operated board and induction motherboard. Cooking cells are not

heated. An error is shown on user interface of Hitit G1. The error is shown on service mode instead of user

interface Hitit G2 cooktops.

Cut the power of cooktop and remove glass of

cooktop.

Check connection of cable and Sockets of between touch-operated board and

induction motherboard .

Is there any problem with cables and sockets?

Correct connection socket or cables and plug in the

board.Yes

Check whether any fouling/damage is on

induction motherboard circuits and touch-

operated board.

First change touch-operated board and if it needs, change induction motherboard on the right side.

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EP Error

There is an EP error on the cooktopMains supply is missing comming through IG board.

Check whether all wires of supply cord is connected to supply mains properly

check whether the fuse path on the filter board is brokendown or not.

Change filter board

Remove the glass and checkcables between induction main board and filter board.

Change induction main board

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10. COMPONENT MOUNTING/ DISMANTLING

List of Used Device

Electric screwdriver Pliers

10.1 Changing Vitroseramic Glass

At first, cut the power after that cooktop should be moved to worktablefrom kitchen bench.

Screws which attach vitroseramic to casing should be removed by fillister head

screwdriver. Important: !!!! While mounting the glass, please be sure that the cable between UI boards

and onOff board is located as below. The cables should be between induction coil and glass.

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10.2 Changing Heater Coils

Heater coils which are located left and right side should be romoved by lifting them up..

Warning: Strings which are forgetten above electronic cards defect electronic cards. While heather coils are being removed, be careful not to forget strings which are. Which enables work to be flammable eyes 4 There are 2 NTC connection cable and

connector.

The figure below shows the NTC socket. 2 NTC connector on the electronic board Pull upwards, compressed.

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Remove the 4 screws at the end of the coil wires. For coil connection cable screws

Tightening torque: 0.8 Nm. Pulling the ground wire with the help of pliers. faulty heater coil at the end of the process can change with a new one.

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10.3 Replacement Touch Control Card

Touch the card, remove the edge of the socket. Recover your screwdriver or nail to remove the card from the card quotes.There are 8 feet below the touch controller. Pull them by hand if necessary.

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10.4 Modification of hob Cable

Power cables in hob, there are 3 groups, including communication cables and grounding.. Communication cables are grouped together from different parts of the supply cable is the case.

Communication cables are quoted and socket.Remove the connector by squeezing the tabs to remove the cables. This cable is the same connections for communication between the motherboard brisk every 2 Remove the motherboard.

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The cables are passed during the change cables should be taken into plastic tabs on the lower part.You had a new one after changing the defective cable to the same quotes Blue and white color formed by 2 phase - neutral cables are induction cable provides power to the motherboard. Cables not bother to change the location of changing the phase or neutral.

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10.5 Modification of induction Motherboard

The onboard 12-volt cable is required for 12 volt feed of the card is available. Detach the cable from the nail holding.

The motherboard has 4 screws for fastening. These screws are 2 of them next to the socket and 2 were next to the cooler. Remove the screws with the screwdriver to secure the card.

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10.6 Power Card to be replaced

There are 2 power board our quarry supplying electronic cards in the left and right. The difference between these cards from the top card on the right as seen in the image at 12 volts is not producing parts. This part of the card is being used in 12 volt nutrition.

Phase on the power cord - Remove your hand needlenose or neutral and ground sockets.

Terminals 2 and 3 at the terminal No. 4 ranking and ground terminals dir.1 If the phase-to-neutral terminals terminals. Definitely the place should not mix more

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There are 2 screws that secure the card on power cards. Screws to get the card is empty unscrew with the help of a screwdriver. After removing the screws and cables holding the side tabs on the power Flex Card card, remove the card.

10.7 To be replaced Cooling Fan

There are 3 jack plug located on the cooling fan to dislodge.

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Lift the fan upwards, slowly. Cables supplying the final step in the fan to remove the fan

Remove the retaining tabs.

10.8 If the mains cord to be replaced

Disconnect the cables connected to the network card connection cord.

Mains cord is connected to the power board in the right and left. Disconnect the mains power cord and grounding cables card

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After the mains cord must be plugged into a grounding cable replaced. hob is provided with grounding cable.

11.Exploded vıew

Exploded view list is defined in manusoft. You can study exploded view from manusoft.

12.Servıce part

Service pieces list is defined in manusoft. You can study service pieces from manusoft.