Electrolux Hob, GAS HOBS WITHELECTRONIC IGNITION Service Manual

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SERVICE MANUAL

COOKING

© ELECTROLUX ZANUSSI S.p.A.
Corso Lino Zanussi,30

Publication

number

I - 33080 PORCIA /PN (ITALY)

599 36 62-62

Tel [phone]
Fax [phone]

SOI

Edition: 04.2005

EN/SERVICE/FV

Built-in hobs

GAS HOBS WITH

ELECTRONIC IGNITION

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TABLE OF CONTENTS

1. INTRODUCTION ......................................................................................................................................... 6

1.1 PURPOSE OF THIS MANUAL ................................................................................................................ 6

1.2 ESD - Electrostatic Discharge and its effect on the components ............................................................ 6

1.3 GENERAL DESCRIPTION ...................................................................................................................... 6

2. TECHNICAL CHARACTERISTICS ............................................................................................................. 7

2.1 GENERAL TECHNICAL DATA................................................................................................................ 7

2.2 CHARACTERISTICS OF BURNERS AND NOZZLES ............................................................................ 7

3. CONTROL SECTION AND BURNERS....................................................................................................... 8

3.1 POSITIONS OF THE CONTROLS .......................................................................................................... 8

3.2 MAIN ON/OFF KEY ................................................................................................................................. 9

3.3 BURNER CONTROL PANEL................................................................................................................. 10

3.4 TIMER CONTROL PANEL..................................................................................................................... 11

3.5 CHILD SAFETY FEATURE.................................................................................................................... 12

4. ELECTRONIC GAS CONTROL SYSTEM ................................................................................................ 13

4.1 OVERVIEW OF THE SYSTEM.............................................................................................................. 13

4.2 OPERATION OF THE SYSTEM............................................................................................................ 14

4.3 BASIC CIRCUIT DIAGRAMS................................................................................................................. 15

BASIC CIRCUIT DIAGRAM: GAS SUPPLY AND CONTROL SYSTEMS.................................................... 15

IGNITION CIRCUIT - BASIC DIAGRAM....................................................................................................... 16

4.4 SYSTEM COMPONENTS...................................................................................................................... 17

4.4.1 POWER BOARD .................................................................................................................................. 17

4.4.2 SENSOR CONTROL INTERFACE CIRCUIT BOARDS ...................................................................... 18

4.4.3 POWERED FLAME MODULATION VALVES...................................................................................... 20

Fig. 15............................................................................................................................................................ 21

4.4.4 MAIN SAFETY SOLENOID VALVE ..................................................................................................... 22

4.5 POSITIONS OF THE COMPONENTS INSIDE THE HOB .................................................................... 23

5. OPERATING THE HOB (extract from Instruction Booklet) ....................................................................... 24

5.1 TOUCH CONTROL KEYS ..................................................................................................................... 24

5.2 LIGHTING THE BURNER...................................................................................................................... 24

5.3 SWITCHING OFF THE BURNERS........................................................................................................ 26

5.4 FAILURE TO LIGHT .............................................................................................................................. 26

5.5 IF THE FLAME GOES OUT (AUTOMATIC RE-IGNITION)................................................................... 26

5.6 SWITCHING OFF ALL THE BURNERS ................................................................................................ 27

5.7 AUTOMATIC BURNER SWITCH-OFF .................................................................................................. 27

5.8 AUTOMATIC HOB SWITCH-OFF.......................................................................................................... 27

5.9 PROTECTING AGAINST OVERHEATING ........................................................................................... 28

5.10 CHILD SAFETY FEATURE ................................................................................................................ 28

5.11 TIMER................................................................................................................................................. 29

5.10.1 PROGRAMMING THE BURNER SWITCH-OFF TIME...................................................................... 29

5.10.2 USING THE TIMER WITH THE BURNERS SWITCHED OFF/MINUTE-MINDER FUNCTION........ 31

6. ADAPTING THE HOB TO DIFFERENT TYPES OF GAS......................................................................... 32

6.1 REPLACING THE NOZZLES................................................................................................................. 32

6.2 ADJUSTING THE HOB FOR THE TYPE OF GAS................................................................................ 32

6.3 ADJUSTING THE MINIMUM SETTING................................................................................................. 33

7. ERROR CODES ........................................................................................................................................ 34

8. TROUBLE-SHOOTING ............................................................................................................................. 37

8.1 TROUBLE-SHOOTING USING ERROR CODES ................................................................................. 37

8.1.1 ERRORS WITH BURNER BLOCK ......................................................................................................37

8.1.2 TROUBLE-SHOOTING WITHOUT ERROR CODES .......................................................................... 38

8.1.2 TROUBLE-SHOOTING WITHOUT ERROR CODES .......................................................................... 39

8.1.2 TROUBLE-SHOOTING WITHOUT ERROR CODES .......................................................................... 40

8.2 TROUBLESHOOTING WITHOUT ERROR CODE................................................................................ 42

9. ACCESSIBILITY ........................................................................................................................................ 43

9.1 REMOVAL OF TOP FROM THE CABINET........................................................................................... 43

9.2 REMOVAL OF GAS SUPPLY CONNECTION ...................................................................................... 43

9.3 REMOVAL OF UPPER TOP..................................................................................................................44

9.4 ACCESS TO COMPONENT ZONE....................................................................................................... 46

16 - MAIN SAFETY VALVE.................................................................................................................................. 46

9.4.1 DISMOUNTING THE BURNER CONTROL ELECTRICA VALVES .................................................... 47

9.4.2 DISMOUNTING THE MAIN SAFETY ELECTRIC VALVE................................................................... 48

9.4.3 REPLACEMENT OF INTERFACE BOARDS....................................................................................... 49

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9.4.4 REPLACEMENT OF POWER BOARD................................................................................................50

9.4.5 – REPLACEMENT OF BURNERS....................................................................................................... 51

9.4.6 REPLACEMENT OF THERMOCOUPLES .......................................................................................... 52

9.4.7 REPLACEMENT OF IGNITION SPARK PLUGS................................................................................. 54

10. ELECTRIC DIAGRAMS............................................................................................................................. 55

10.1 BASIC ELECTRIC DIAGRAM ............................................................................................................ 55

10.2 WIRING DIAGRAM ............................................................................................................................ 56

10.3 KEY TO DIAGRAM............................................................................................................................. 57

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GENERAL PRECAUTIONS

- These appliances are designed to operate using natural gas (methane) and LPG.
The appliances are factory-set for use with natural gas (methane). If a different type of gas is utilized (such

as LPG), the hob can be re-calibrated by replacing the gas nozzles.

- It is essential to ensure that there is adequate air circulation around all gas appliances.
Inadequate ventilation, as well as causing the appliance to malfunction, may also result in a lack of

oxygen that might be hazardous for persons.

- Installation and connection to the gas and electricity circuits must be carried out by qualified personnel in
compliance with all current safety legislation.

- After being in use for a short time, and for some time after switching off, the cooking areas and the
surrounding surface will remain very hot.

A pilot lamp located on the hob remains lit until these cool down.
In order to avoid serious burns, it is important to ensure that no person touches the surface while

the pilot lamp is lit.

- Do not switch on the burners without pans in the cooking areas, otherwise the hob may overheat and,
after a time, the burner will switch off.

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1. INTRODUCTION

1.1 PURPOSE OF THIS MANUAL

The purpose of this Manual is to provide technical details regarding the new control system for
built-in gas hobs so that trouble-shooting and repairs cab be carried out correctly.

1.2 ESD - Electrostatic Discharge and its effect on the components

The interface for the control unit is not fitted with an internal device to protect against electrostatic
discharge (multiple connectors). When effecting repairs, therefore, the service engineer must
check for stabilization of the potential on the oven casing (i.e. discharge any static electricity by
touching the oven casing) in order to prevent the possibility of overload, which might damage the
control unit.
The same care is necessary when handling control units supplied as spare parts (i.e. not yet fitted
to the oven), which must be removed from the protective bag in ESD only after stabilizing the
potential (i.e. discharging any static electricity) and only then installed in the appliance.
Important: The theory behind the process of electrostatic charge and discharge is not discussed in
this Manual, since the tangible effects are considered to be more important. However, the effects
are felt frequently when touching a metal handle and feeling the electrostatic discharge in the form
of a minor shock.
But what happens when stabilization of the potential takes place with semi-conductor components
(i.e. components on a circuit board, such as integrated circuits, microprocessors etc.)?
Stabilization of the potential takes place across the internal structure of the component. This does
not necessarily lead to the immediate destruction of the component; subsequent malfunctions
across damaged internal connections may be more harmful, and these occur only as a result of
overheating or current overloads.
It is true that almost all sensitive semi-conductor components (such as MOS circuits) have been
improved by the addition of protective measures, but the internal structures of these components
are today smaller than, for example, ten years ago, which tends to increase their sensitivity to the
previous levels.

Important!

Which components are susceptible to damage by static electricity during repairs?
All circuit boards featuring control and command accesses (door switches, food probes etc.), bare
tracks and microprocessors, as well as any other circuits with free access.

Examples:

- Programmers with access to the food probe and the door switch.

- Programmers whose control processors are accessible (due to their high costs, the protective
systems are only partial).

- W.O.E.C. control units.

- S.O.E.C. control units.

- C.H.E.C. control units.

- KRONOS control units.

- Interface board of the Electronic gas hob.

1.3 GENERAL DESCRIPTION

In these hobs, the burners are controlled entirely by a special electronic system that actions special
solenoid valves which regulate the quantity of gas delivered to the burners.
With the introduction of this electronic control system, it is now possible to fit Touch Control keys,
as well as to provide greater safety, such as automatic re-lighting of the burners, and several
control functions, including indication of residual heat, child safety feature, interruption of all
operations using a single switch, safety cut-off in case of power failure or failure to light, automatic
timer-controlled switching off and programmed operation of the burners. These functions are
described in this manual.

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2. TECHNICAL CHARACTERISTICS

2.1 GENERAL TECHNICAL DATA

VOLTAGE V 220 - 230
POWER ABSORPTION W 20
DIMENSIONS OF CABINET (HxWxD) cm 3x71x47

AUTOMATIC IGNITION: SI
AUTOMATIC RE-IGNITION SI
GAS CONTROL SYSTEM TYPE ELECTRONIC
WITH TOUCH CONTROL
SAFETY SOLENOID VALVE N° 1
MODULATION SOLENOID VALVE N° 4 (1 x BURNER)
RAPID BURNERS: N°/kW 1 / 2,9 (G20) – 2,7 (G30)
SEMI-RAPID BURNERS: N°/kW 2 / 1,9
AUXILIARY BURNERS: N°/kW 1 / 1,0
TEMPERATURE LIMITS °C 95°C Burner at minimum
105°C Hob is cut off
AUTOMATIC BURNER SWITCH-OFF After 4 hours
PROGRAMMING OF BURNERS MAX. TIME. 40 minutes

2.2 CHARACTERISTICS OF BURNERS AND NOZZLES

Nominal delivery in

Type of GAS

Type of burner

(R - L)

Nozzle

marking

(mm/100)

Nominal

thermal
delivery

kW

m

3

/h g/h

Nominal

pressure

(mbar)

Natural gas

(methane)

(G20)

Rapid :
Semi-rapid :
Auxiliary :

119

96
70

2,6
1,6
1,6

0,286
0,181
0,095

-

-

-

20

Natural gas

(methane)

(G25)

Rapid :
Semi-rapid :
Auxiliary :

124
100

71

2,6
1,6
1,6

0,286
0,181
0,095

-

-

-

25

LPG/Propane

or

(G30)

(G31)

Rapid :
Semi-rapid :
Auxiliary :

86
71
50

2,5
1,6
1,6

-

-

-

195
137

72

28-30 (G30)

37 (G31)

(*) Certain models only

NOTE : The consumption and delivery figures are approximate; the exact values are shown

in the instruction booklets for each model.

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3. CONTROL SECTION AND BURNERS

3.1 POSITIONS OF THE CONTROLS

The figure below illustrates the positions of the controls and the burners.

Fig. 1

BR-R (*) - RAPID BURNER (FRONT-RIGHT)
BR-S/R 1 - SEMI-RAPID BURNER (REAR-LEFT)
BR-S/R 2 - SEMI-RAPID BURNER (REAR-RIGHT)
BR-A - AUXILIARY BURNER (FRONT-LEFT)
BR-R CONTROL - TOUCH CONTROL FOR RAPID BURNER (FRONT-RIGHT)
BR-S/R 1 CONTROL - TOUCH CONTROL FOR SEMI-RAPID BURNER (REAR-LEFT)
BR-S/R 2 CONTROL - TOUCH CONTROL FOR SEMI-RAPID BURNER (REAR-RIGHT)
BR-A - TOUCH CONTROL FOR AUXILIARY BURNER (FRONT-LEFT)
MAIN ON /OFF - TOUCH CONTROL - MAIN ON/OFF
TIMER BOARD - TOUCH CONTROL - TIMER
SAFETY BLOCK - TOUCH CONTROL - CHILD SAFETY FEATURE

(*) Certain models are fitted with a triple-crown burner in place of the rapid burner (see table of burners and

nozzles)

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3.2 MAIN ON/OFF KEY

The hob is fitted with a main ON/OFF key. The appliance must be switched on before the burners
can be ignited.
When the appliance is switched on, the corresponding LED lights.
The ON/OFF switch can be used to switch off all the burners at the same time, which may be
necessary if liquids boil over or in situations in which children may be in danger.

Fig. 2

ON / OFF LED - LED INDICATING THAT THE APPLIANCE IS SWITCHED ON
MAIN ON / OFF - MAIN ON / OFF SWITCH

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3.3 BURNER CONTROL PANEL

Each burner is operated from a specific area of the control panel as indicated in the figure below.
Each of the control areas indicates the position of the corresponding burner, the touch control for
switching the burner on and off, a LED indicating residual heat, six LEDs indicating the burner
setting (level 0 is the lowest setting) and two touch controls for increasing and decreasing the
flame.

Fig. 3

ON / OFF BURNER - SWITCHES THE BURNER ON AND OFF
BURNER ZONE - INDICATES THE POSITION OF THE BURNER
RESIDUAL HEAT LED - LED INDICATING RESIDUAL HEAT
FLAME LEVEL LEDS - 6 LEDs INDICATING THE LEVEL OF THE FLAME
INCREASING FLAME - TOUCH CONTROL - INCREASES THE FLAME
DECREASING FLAME - TOUCH CONTROL - DECREASES THE FLAME

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3.4 TIMER CONTROL PANEL

This type of hob also features programmable operation for each burner. The various settings are
controlled from the specific zone shown below.
The programming function (which switches off the burner at the end of a preset time) can be used
for one burner only at a time. The maximum programming time is 40 minutes.

Fig. 4

COOKING TIME DISPLAY - DISPLAYS THE TIME FOR WHICH THE BURNER WILL REMAIN LIT
BURNER ZONE LED - LED INDICATING THE CORRESPONDING BURNER
ON / OFF PROGRAMME - TOUCH CONTROL - SWITCHES THE PROGRAMME ON AND OFF
INCREASING TIME / BURNER - TOUCH CONTROL - INCREASES TIME OR SELECTS BURNER
DECREASING TIME / BURNER - TOUCH CONTROL - DECREASES TIME OR SELECTS BURNER

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3.5 CHILD SAFETY FEATURE

The hob features a child safety system in which the user can disable the controls to prevent
inadvertent actioning by children.
When the child safety feature has been selected, only the main ON/OFF switch is enabled (see
Fig. 2, page 9).

Fig. 5

SAFETY BLOCK LED - LED: CHILD SAFETY FEATURE ON
SAFETY BLOCK ON / OFF - TOUCH CONTROL: SWITCHES ON CHILD SAFETY FEATURE

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4. ELECTRONIC GAS CONTROL SYSTEM

4.1 OVERVIEW OF THE SYSTEM

This electronic system is designed to be fitted to Electrolux "Gas on Glass" built-in hobs
(70x60 cm) with uncovered burners.
Its main characteristics are as follows:

- Control of four current-production Electrolux burners (uncovered): one rapid, two semi-rapid,
one auxiliary.

- Hob in special high-strength safety glass (thickness up to 8 mm).

- Ignition system with 230V spark generator and spark plug.

- Flame detection with thermocouple.

- Wiring circuit comprising the following:

- Connection between circuit board and valves.

- Connection between circuit board and spark generator.

- Connection between circuit board and power circuit.

- Connection between circuit board and thermocouples.

- Connection between interface circuit boards and power board.

- Electronic control system comprising:

- Power board.

- Interface board (left)

- Interface board (right)

- General interface board with: ON/OFF, child safety feature, timer module, display.

- The following gas valves are featured:

- A main safety valve (automatic)

- A modulation valve for each burner (four in total)

- User interface system with touch control: each interface controls two burners.

Each interface board has the following characteristics:

- "+" and "–" touch controls for adjustment of the flame.

- Flame level indicator: 6 levels with LED indication (Levels 1 - 5: modulation; level 6: valve

completely open).

- LED indicators: one LED lights to indicate that the burner is in operation; a second LED

warns the user about residual heat around each burner.

The general interface has the following characteristics:

- "ON" AND "OFF" controls.

- Timer function with display module

- Child safety function.

- A single version of the power board which can be customized via software.

- Easily-customized user interface software.

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4.2 OPERATION OF THE SYSTEM

When the user wishes to light one of the burners using the touch control on the burner control
panel, the main safety valve VS (Fig. 6) opens (unless the valve is already open and feeding a
different burner). The corresponding modulation valve VM opens and the spark generator actions
the spark plug which ignites the burner.

The burner is always ignited at maximum setting. At this point, the flame detection procedure takes
place. If the burner has failed to ignite, the ignition system makes two more attempts.

On each burner, the level of the flame can be adjusted using keys

or while the flame

setting is displayed by the flame level LEDs.

In the event of problems with a burner (e.g. if the burner is wet etc.) and the main switch is set to

ON, it is possible to disable only the valve (VM) relative to that burner, using the touch control

.
This interrupts the supply of gas only to the single burner, while the remaining burners continue to
operate normally.

If the power supply is switched off or if the electronic control system detects a malfunction (e.g. a
problem with the electrical connections), the main valve VS and the corresponding modulation
valve VM intervene to cut off the gas supply to the burners.

In all cases, therefore, the gas supply to the burners is controlled by at last two safety valves. After
a power failure, the system remains disabled, which is indicated by the flashing of all the LEDs in
the hob control zone. To restore the burners to normal operation after a power failure (LEDs

flashing), it is necessary to wait at least 60 seconds and then press buttons

and ,

simultaneously and then button

, after which the burner can be used normally.

The presence of residual heat on and around the burners is indicated by the corresponding LEDs
positioned on the hob control panels.

If the temperature in the electronic section should exceed about 95°C, in order to prevent possible
damage, the system reduces all the burners to the lowest setting; if the temperature should exceed
105°C, then all the safety valves that control the supply to the burners are closed and an error
code is displayed.

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4.3 BASIC CIRCUIT DIAGRAMS

BASIC CIRCUIT DIAGRAM: GAS SUPPLY AND CONTROL SYSTEMS

Fig. 6

IN GAS - GAS INLET
VS - MAIN SAFETY VALVE
VM - POWERED MODULATION VALVE
SP - SPARK PLUG
TC - THERMOCOUPLE
BR-R - RAPID BURNER
BR-S/R - SEMI-RAPID BURNER
BR-A - AUXILIARY BURNER
TIMER BOARD - MAIN TOUCH-CONTROL INTERFACE BOARD
TOUCH DX BOARD - RH TOUCH-CONTROL INTERFACE BOARD
TOUCH SX BOARD - LH TOUCH-CONTROL INTERFACE BOARD

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IGNITION CIRCUIT - BASIC DIAGRAM

Lighting of the burners is performed by the spark plugs, which are powered by a single spark
generator actioned by the power board.

Fig. 7

SP - SPARK PLUG
TC - THERMOCOUPLE
BR-R - RAPID BURNER
BR-S/R - SEMI-RAPID BURNER
BR-A - AUXILIARY BURNER
POWER BOARD - POWER BOARD
TIMER BOARD - MAIN TOUCH-CONTROL INTERFACE BOARD
TOUCH DX BOARD - RH TOUCH-CONTROL INTERFACE BOARD
TOUCH SX BOARD - LH TOUCH-CONTROL INTERFACE BOARD

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4.4 SYSTEM COMPONENTS

The system comprises four circuit boards: one power board and three interface boards. The hob
controls are divided among the three general interface boards:

- General interface and timer board.

- RH interface board, connected directly to the general interface board.

- LH interface board, identical to the RH board but connected directly to the power board.
The gas is controlled by a main safety solenoid valve and by four powered modulation valves (one
for each burner).
The presence of a flame is detected by four thermocouples (one for each burner).

4.4.1 POWER BOARD
The power board is customized by a software that defines all the system's control and safety

parameters. This software is entered on completion of the production of the hob.
The main functions of the power board are as follows:

- Control for spark generator for
lighting the burners.

- Flame presence detection by
thermocouples

- Control of the main safety valve.

- Control of the modulation valve for
each burner.

- Regulation, control and diagnostics
for each burner.

Fig. 8

Fig. 8

AUX1 - SERIAL LINE
TC1 - CONNECTION TO INTERFACE BOARD
TC2 - CONNECTION TO INTERFACE BOARD
TC3 - CONNECTION TO INTERFACE BOARD
TC4 - CONNECTION TO INTERFACE BOARD
BC1 - POWER TO SOLENOID VALVE - BURNER BR-A
BC2 - POWER TO SOLENOID VALVE - BURNER BR-R
BC3 - POWER TO SOLENOID VALVE - BURNER BR-S/R 2
BC4 - POWER TO SOLENOID VALVE - BURNER BR-S/R 1
BCX - POWER TO MAIN SAFETY SOLENOID VALVE
N - POWER SUPPLY (NEUTRAL)
PE - EARTH
LO - POWER TO SPARK GENERATOR
L - POWER SUPPLY (LIVE)

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4.4.2 SENSOR CONTROL INTERFACE CIRCUIT BOARDS

This hob is provided with a touch sensor control
device.
To insert the controls in the hob, some sensors
interface electronic PCBs are used in place of the
normal buttons which control the switches placed in
the control unit.
The system consists of sensor PCBs placed under
the glass which recognise the presence of a finger
at a distance of about 4 mm from the sensors (glass
thickness).
The sensor PCBs include different control units with
touch sensors used on the basis of the control
software (see Fig. 9, 10 and 11).

Fig. 9

The functions of the various controls and of the LEDs and displays are listed below.

Fig. 10

ON / OFF
BR-S/R 1 BURNER

ON/OFF - REAR LEFT BURNER

BR-S/R 1 RESIDUAL
HEAT LED

RESIDUAL HEAT - REAR LEFT
BURNER

BR-S/R 1 FLAME
LEVEL LEDS

FLAME LEVEL LEDs - REAR
LEFT BURNER

BR-S/R 1
DECREASING
FLAME

DECREASE FLAME - REAR
LEFT BURNER

BR-S/R 1
INCREASING
FLAME

INCREASE FLAME - REAR LEFT
BURNER

ON / OFF
BR-R BURNER

ON/OFF - FRONT LEFT
BURNER

BR-R RESIDUAL
HEAT LED

RESIDUAL HEAT - FRONT
LEFT BURNER

BR-R FLAME
LEVEL LEDS

FLAME LEVEL LEDs - FRONT
LEFT BURNER

BR-R
DECREASING
FLAME

DECREASE FLAME - FRONT
LEFT BURNER

BR-R
INCREASING
FLAME

INCREASE FLAME - FRONT
LEFT BURNER

BOARD FOR LEFT FRONT AND

LEFT REAR SECTIONS

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Fig. 11

BR-S/R 1 LED LED FOR REAR LEFT BURNER

BR-S/R 2 LED LED FOR REAR RIGHT

BURNER

BR-A LED LED FOR FRONT LEFT

BURNER

BR-R LED LED FOR FRONT RIGHT

BURNER

ON / OFF
BR-S/R 2 BURNER

ON/OFF - REAR RIGHT
BURNER

BR-S/R 2 RESIDUAL
HEAT LED

RESIDUAL HEAT - REAR
RIGHT BURNER

BR-S/R 2 FLAME
LEVEL LEDS

FLAME LEVEL LEDs - REAR
RIGHT BURNER

BR-S/R 2
DECREASING
FLAME

DECREASE FLAME - REAR
RIGHT BURNER

BR-S/R 2
INCREASING
FLAME

INCREASE FLAME - REAR
RIGHT BURNER

ON / OFF
BR-R BURNER

ON/OFF - FRONT RIGHT
BURNER

BR-R RESIDUAL
HEAT LED

RESIDUAL HEAT - FRONT
RIGHT BURNER

BR-R FLAME
LEVEL LEDS

FLAME LEVEL LEDs - FRONT
RIGHT BURNER

BR-R
DECREASING
FLAME

DECREASE FLAME - FRONT
RIGHT BURNER

BR-R
INCREASING
FLAME

INCREASE FLAME - FRONT
RIGHT BURNER

MAIN BOARD / TIMER

BOARD FOR RIGHT FRONT

AND RIGHT REAR SECTIONS

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4.4.3 POWERED FLAME MODULATION VALVES

The flame control valves comprise two sections: the modulation section and the safety valve section.

Fig. 11

1 - ELECTRICAL CONNECTORS (FASTONS)
2 - CONNECTOR FOR MODULATION MOTOR
3 - VALVE SOLENOID
4 - MODULATION MOTOR (STEPPING LINEAR

ACTUATOR)
5 - GAS INLET COUPLING
6 - GAS DELIVERY COUPLING

The modulation section SM comprises a pressure regulator which, by means of a stepping linear actuator

APP, compresses the regulation spring M1 , thus obtaining one of the six levels of closure of element O1.

The output pressure varies according to the compression of the spring M1 and therefore according to the

electronic control system.

When actuator APP is in the minimum compression position of spring M1, the closing element O1 is

forced into the closed position by spring M2. On the contrary, when the actuator is at maximum position

(i.e. when the flame is at maximum setting), the closing element O1 is forced into the completely-open

position.

In this way the SM assembly acts as a modulator for the delivery pressure and therefore for the power of

the burner (flame setting). The SM assembly also serves to cut off the gas.

The safety solenoid section EV consists of a control coil EM and a closure element O2, and acts as a

safety valve.

Fig. 12

APP - LINEAR STEPPING ACTUATOR (MOTOR)
EM - CONTROL COIL
EV - SAFETY VALVE
M1 - REGULATION SPRING
M2 - CLOSURE SPRING
O1 - MODULATOR CLOSING ELEMENT
O2 - CLOSING ELEMENT FOR SAFETY VALVE
SM - MODULATOR

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PRESSURE DIAGRAM WITH 20mbar NATURAL GAS

Fig. 14

PRESSURE DIAGRAM WITH 37mbar LIQUID GAS

Fig. 15

NO. OF STEPS

NO. OF STEPS

OUTPUT PRESSURE (mbar)

OUTPUT PRESSURE (mbar)

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MODULATION CONTROL MOTOR (STEP-BY-STEP)

The modulation control motor of the solenoid valves is a unipolar step-by-step type.
Please find below the connection diagram of the motor and the rotation diagram.

Fig. 17

4.4.4 MAIN SAFETY SOLENOID VALVE

The function of the main safety valve is to provide an extra safety feature in controlling the
delivery of gas.
The internal structure and the operation of the valve are identical to the EM section of the
burner control valves described in the corresponding section.

Fig. 17

1 - ELECTRICAL CONNECTOR (FASTON)
2 - SOLENOID
3 - GAS DELIVERY COUPLING
4 - GAS INLET COUPLING

BLK

BLK Black
RED Red
BRW Brown
ORG Orange
YEL Yellow

BLK RED

RED

ORG

BRW

YEL

BRW

ORG

YEL

RED/

A

BLK

A

COM

RED

_
A
BRW

UNIPOLAR
MOTOR

_
B
YEL

B
ORG

MOTOR CONNECTOR

CLOCKWISE

ROTATION

ANTI-CLOCKWISE ROTATION

ROTATION DIAGRAM STARTING FROM THE PAUSE POSITION

MOTOR CONNECTION DIAGRAM

ROTATION DIAGRAM

SOI 04.05 FV 23/57 599 36 62-62

4.5 POSITIONS OF THE COMPONENTS INSIDE THE HOB

The figure below shows the positions of the various components inside the hob.

Fig. 18

1 - MAIN SAFETY SOLENOID VALVE
2 - LEFT REAR BURNER BR-S/R 1 (SEMI-RAPID)
3 - TERMINAL BLOCK FOR POWER SUPPLY
4 - SPARK GENERATOR
5 - RIGHT REAR BURNER BR-S/R 2 (SEMI-RAPID)
6 - GENERAL INTERFACE BOARD (TOUCH CONTROL)
7 - POWER BOARD
8 - RIGHT FRONT BURNER BR-R (RAPID)
9 - LEFT FRONT BURNER BR-A (AUXILIARY)
10 - CONTROL VALVE FOR LEFT FRONT BURNER BR-A (AUXILIARY)
11 - LEFT INTERFACE BOARD (TOUCH CONTROL)
12 - CONTROL VALVE FOR RIGHT FRONT BURNER BR-R (RAPID)
13 - CONTROL VALVE FOR RIGHT REAR BURNER BR-S/R 2 (SEMI-RAPID)
14 - CONTROL VALVE FOR LEFT REAR BURNER BR-S/R 1 (SEMI-RAPID)
15 - POWER BOARD

SOI 04.05 FV 24/57 599 36 62-62

5. OPERATING THE HOB (extract from Instruction Booklet)

Before using the appliance, remove all
packaging material, including advertising
labels and protective film, if any.

5.1 TOUCH CONTROL KEYS

The hob is operated using special "touch control" sensor
keys.
To operate the hob, simply touch the appropriate sensor
with a fingertip.
Do not touch more than one sensor at a time when
operating the hob.

The symbols listed below indicate the functions of the
various touch keys.

Main ON/OFF (touch control)

Light burner (touch control)

Flame level indicator LEDs

Increase flame setting

Reduce flame setting

Residual heat warning LED

BURNER CONTROL AREA

Fig. 19

5.2 LIGHTING THE BURNER

1. Touch the main ON/OFF key for three seconds to
switch the hob on.

The red LED above the touch control will light, and the

buzzer will sound.

The hob is now ready for use.

Fig. 20

SOI 04.05 FV 25/57 599 36 62-62

2. Touch the sensor key

for the required burner.

All LEDs above the sensor keys

and will

light.

Fig. 21

3. Within 3 seconds touch the sensor key

or .to

turn on the burner.

- If the sensor key

is touched the burner will turn
on automatically at the max. level of the flame (all the
LEDs indicating the flame level remain lit.

- If the sensor key

is touched, the burner will turn
on automatically at medium level of the flame (3 LEDs
indicating the flame level remain lit).

Fig. 22

4. To increase or reduce the flame level of the burner, use

the sensor keys

or .

The residual heat pilot lamp

lights
immediately after the switching on of the burner.

It indicates that the cooking zone heats up and remains

lit until the grill and the burner cool down.

Fig. 23

SOI 04.05 FV 26/57 599 36 62-62

5.3 SWITCHING OFF THE BURNERS

1. To switch off a burner, touch the sensor key. All the "flame level" LEDs for the burner switch off.
The "residual heat" LED remains lit until the burner and the hob have cooled down.

5.4 FAILURE TO LIGHT

The hob's ignition device generates a series of small sparks for about 6 seconds.
If for any reason the flame should not ignite within this period, the flow of gas to the burner is interrupted
and the hob remains in "pause" for about 3 seconds, after which it automatically attempts to ignite the
burner for a further period of 6 seconds.
After three failed attempts at ignition, the gas supply to the
burner is cut off to ensure safety.
The "flame level" LEDs and the "residual heat" LED remain
flashing.

Important: If the safety system cuts off the gas to
a burner, it cannot be operated for about 60
seconds.

After 60 seconds, the burner can be re-activated by

pressing

and simultaneously.

The burner can now be used by touching sensor key

.

See chapter 5.2 Lighting the burner.

Fig. 24

Important: Ensure that the crown, the cap and the
grille are correctly positioned (see figure opposite)

5.5 IF THE FLAME GOES OUT (AUTOMATIC

RE-IGNITION)

If the burner should for any reason be extinguished (by
draughts, overflowing liquids etc.), the flow of gas is
immediately interrupted. Then, after about 20 seconds, the
hob automatically attempts to re-ignite the flame.
At the moment of re-ignition, the flame lights at the
maximum level, and is then automatically regulated to the
level to which it was set before being extinguished.

Fig. 25

After three failed attempts at ignition, the gas supply to the
burner is cut off to ensure safety.
The "flame level" LEDs and the "residual heat" LED remain
flashing.

Important: If the safety system cuts off the gas to
a burner, it cannot be operated for about 60
seconds.

A - Grille

B - Cap

C - Flame ring

D - Burner

E - Thermocouple

F - Spark plug

SOI 04.05 FV 27/57 599 36 62-62

After 60 seconds, the burner can be re-activated by

pressing

and simultaneously.

The burner can now be used by touching sensor key

In the event that the burner ignition system is
inoperative, do not use piezoelectric ignition
devices. If necessary, matches should be used.

5.6 SWITCHING OFF ALL THE BURNERS

The ON/OFF touch control can be used to switch all
the burners off immediately and simultaneously, in case of
emergencies or unexpected events (overflowing liquids,
situations of danger involving children etc.)

Fig. 26

5.7 AUTOMATIC BURNER SWITCH-OFF

In the event that the user should forget to switch off a
burner and does not adjust the controls, the burner will
switch off automatically after four hours.
In this event, the gas supply is disconnected and the burner
is blocked.

Important: If the safety system cuts off the gas to
a burner, it cannot be operated for about 60
seconds.

After 60 seconds, the burner can be re-activated by

pressing

and simultaneously.

The burner can now be used by touching sensor key

5.8 AUTOMATIC HOB SWITCH-OFF

If no burner is switched on, even if the hob is activated (the LED above the activation touch key

is on),

the hob deactivates automatically if within 30 minutes one control is not activated.

SOI 04.05 FV 28/57 599 36 62-62

5.9 PROTECTING AGAINST OVERHEATING

If the hob is subjected to intensive use, e.g. if several
burners are operated for long periods at maximum flame
setting, a temperature sensor checks for possible
overheating and, if necessary, automatically reduces the
settings of all the burners to minimum level.
If, in spite of this reduction, the temperature continues to
rise, the burners are all switched off and the hob enters
safety block mode.

Important: If the safety system cuts off the gas to
all the burners, they cannot be operated for about
60 seconds.

After 60 seconds, the burner can be re-activated by

pressing

and simultaneously.

The burner can now be used by touching sensor key

5.10 CHILD SAFETY FEATURE

The "Child safety" feature allows the user to disable all the
hob controls to prevent them from being inadvertently used.

1. Press touch key

for about three seconds

The red pilot lamp positioned above the touch key lights

and the buzzer sounds.

Now, all the controls on the hob are disabled, with the
exception of the ON/OFF sensor key.
Any burners that are lit will remain lit, but the flame setting
cannot be altered.

2. To re-enable the controls, press touch key

for about

three seconds.

The red pilot lamp switches off and the buzzer sounds.

Fig. 22

SOI 04.05 FV 29/57 599 36 62-62

5.11 TIMER

The hob features an electronic timer that enables the user to
select a cooking time when the burner is in operation.
Also, it is possible to use the timer – when the hob is not in
operation – as a minute-minder.

The hob can also be operated manually, i.e.
without using the timer.
The timer is inoperative when the hob is disabled.

The symbols on the timer control zone are described below.

Touch control for switching on the timer and
selecting the burner.

Cooking time display

Burner selected

TIMER CONTROL PANEL

Fig. 23

5.10.1 PROGRAMMING THE BURNER SWITCH-OFF TIME

To programme the time at which the burner switches off,
proceed as follows:

1. If necessary, switch on the hob by touching the ON / OFF

touch key for about three seconds.

2. Light the burner by touching the touch control

and

use touch keys

or to adjust the flame setting

(see "LIGHTING THE BURNER")

3. Switch on the timer and select the desired burner by

touching sensor

until the correct burner is displayed.

Fig. 24

SOI 04.05 FV 30/57 599 36 62-62

4. Select the desired cooking time by touching sensors

or .

After the cooking time has been entered, it is no
longer possible to change the burner selected.
To change burners, it is necessary to reset the

cooking time by touching sensor

, and then

changing the burner by touching sensor

.

5. A few moments after selection, the timer countdown

begins.

6. During the last ten seconds of the countdown, the timer

sounds a short buzz to warn the user that the
programmed cooking time is about to end.

7. At the end of the time entered, the buzzer sounds. Touch

sensor

to switch off the buzzer.

5.10.1.1 Modifying the programmed setting

1. At any time, touch sensors

or to increase or

decrease the time entered.

5.10.1.2 Resetting the minute-minder setting

1. Touch sensor

to reduce the time to zero.

Only one burner at a time can be programmed to
switch off automatically.

Fig. 25

The cooking time can be programmed with the
burner lit or off.

For example, after a saucepan of water has been
brought to the boil, then the cooking time for the
pasta or rice etc. can be entered.

The "residual heat" LEDs remain lit even after the
hob has been switched off, and until the grille and
the burner have cooled down.

SOI 04.05 FV 31/57 599 36 62-62

5.10.2 USING THE TIMER WITH THE BURNERS
SWITCHED OFF/MINUTE-MINDER FUNCTION

To use the timer as a minute-minder, the hob must be
switched on.
To use this function, proceed as follows:

1. If necessary, switch on the hob by touching the ON / OFF

touch key for about three seconds. .

2. Touch sensor key

to switch on the timer.

3. Touch sensor keys

or to select the desired

time (maximum setting: 99 minutes).

4. A few instants after entering the selected time, the timer

countdown will begin.

5. The display shows the last minute of the countdown

second by second.

When the programmed time has elapsed, the buzzer

sounds.

6. To switch off the buzzer, touch sensor key

.

5.10.2.1 Modifying the minute-minder setting

1. At any time, touch sensors

or to increase or

decrease the time entered.

5.10.2.2 Resetting the minute-minder setting

1. Touch sensor

to reduce the time to zero.

Fig. 26

Fig. 27

SOI 04.05 FV 32/57 599 36 62-62

6. ADAPTING THE HOB TO DIFFERENT TYPES OF GAS

6.1 REPLACING THE NOZZLES

IMPORTANT: Category "II2H3+" hobs (see
"Technical Characteristics") are not designed
for conversion to operation with town gas.

1. Remove the grilles.

2. Remove the caps and the flame rings from the burners.

3. Use a 7mm hex wrench to unscrew and remove the

nozzles.

Replace the nozzles with those corresponding to the type

of gas to be used (see "Technical Characteristics").

4. Re-assemble the burner, performing the same procedure

in reverse sequence.

5. Replace the gas calibration label (positioned near the

gas inlet coupling) with the label showing the new type of
gas. The new label is included in the plastic bag

containing the injectors.
If the gas pressure is not as specified for the appliance (or if
the pressure is variable), it is necessary to install a pressure
regulator suitable for ducted gas (NOT LPG), and compliant
with UNI-CIG standard 7430, on the inlet hose.
The use of pressure regulators designed for liquid gas (LPG)
is permitted, on condition that these are compliant with UNI­CIG standard 7432.

6.2 ADJUSTING THE HOB FOR THE TYPE OF

GAS

1. If necessary, switch on the hob by touching the ON / OFF

touch key for about three seconds.

2. Touch sensor key

to select the auxiliary burner on

the burner display window.

3. Touch sensor key

until the display shows "99".

Then touch sensor key

until the display shows "80".

Then touch the sensor key again until the display shows

"83".
This procedure places the hob in "change gas" mode; the

display will show the type of gas currently selected.

4. Touch sensor key

to select the type of gas.

The display shows some codes (from "n0" to "n2") which

indicate the type of gas relative to the appliance. (See

User manual).

5. After selecting the type of gas, switch off the hob by

touching the ON/OFF sensor .

6. Switch the appliance on again. The hob will automatically

switch on in "user mode".

Fig. 28

Fig. 29

Fig. 30

SOI 04.05 FV 33/57 599 36 62-62

7. Light all the burners and adjust the flame setting to

minimum to check the stability of the flame (rapid

changing from a min to a max. and vice versa without

switching off the burner).

8. At the same time, check the appearance of the flame (no

smoke, yellow bits, no flame detachments).

If the flame is normal and stable, the "gas change"
procedure is complete.
However, if the flame is not stable when at minimum setting,
it is necessary to make the adjustments described below.

6.3 ADJUSTING THE MINIMUM SETTING

Proceed as follows to adjust the minimum setting correctly:

1. Carry out the operations described in "Adjusting the hob

for the type of gas", steps 1, 2, 3 and 4.

2. Touch the sensor key

to ignite the burner to be

adjusted.
The burner will automatically be set to the minimum

flame setting.

3. If the minimum flame is in fact too small, the burner will

go out. The hob automatically adjusts the minimum flame

setting and re-lights the burner.

4. With the burner lit, touch sensor keys

or make
fine adjustments until the flame is small and even around
the entire perimeter of the crown.

5. Touch the ON/OFF sensor

to switch off the hob.

NOTE :
If after adjusting the minimum setting, the flame is still
producing smoke, with yellow bits or possible flame
detachments, it is necessary to check the pressure and
eventually type and composition of the gas.

Fig. 31

Fig. 32

Fig. 33

SOI 04.05 FV 34/57 599 36 62-62

7. ERROR CODES

The electronic control system performs an internal autodiagnostics routine. If an operating malfunction is
detected, the corresponding error code is displayed.

To display the error codes, it is sufficient to touch the "clock" sensor and then select the inoperative burner. The
error code will be displayed automatically (see Fig. 39 and 40).
If the malfunction affects not one single burner but the entire hob, the same code will be displayed for each
burner.

Fig. 39

Fig. 40

SOI 04.05 FV 35/57 599 36 62-62

The table below lists the various error codes with their meanings.

ERROR

COSE

BLOCK ERROR CODE

DESCRIPTION

CAUSE

0

--

NO ERROR

Normal condition for an operating burner.

1

BURNER

NO FLAME AFTER RETRY

Condition of the burner after 3 consecutive
attempts of failed switching on.

2

BURNER

EV F

EEDBACK FAULT

Condition of the burner in case of “solenoid
valve feedback” wrong.

3

BURNER

SM P

HASE 1 FAULT

Condition of the burner in case of error signal
referring to the relative valve (wrong contacts
on the cables).

4

BURNER

SM P

HASE 2 FAULT

Condition of the burner in case of error signal
referring to the relative valve (wrong contacts
on the cables).

5

BURNER

SM P

HASE 3 FAULT

Condition of the burner in case of error signal
referring to the relative valve (wrong contacts
on the cables).

6

BURNER

SM P

HASE 4 FAULT

Condition of the burner in case of error signal
referring to the relative valve (wrong contacts
on the cables).

7

BURNER

SM E

NABLE FAULT

Condition of the burner in case of global error
signal or referred to more simultaneous errors.

8

BURNER

G

ENERIC FAULT

Generic error condition of the burner in case
the cause does not have a specific code.

9

SYSTEM

TEMPERATURE OUT OF
R

ANGE FAULT

Condition of the burner in case the
temperature detected on the power board
exceeds 105°C.

10

BURNER

C

ONTINUOUS RUN

Condition of the burner in case of continuous
operation longer than 4 hours without any
alteration of the flame level.

11

SYSTEM

POWER SUPPLY VPP
FAULT

Condition of the burner in case the ratio
between the supply values on the power board
is not correct.
(12,8 V and 5 V).

12

SYSTEM

POWER SUPPLY VDD
F

AULT

Condition of the burner in case the ratio
between the supply values on the power board
is not correct.
( 3,3 V e 5 V).

14

BURNER

A

BNORMAL TC

C

ONDITION

Condition of the burner in case of anomalous
flame (parasite flame, incorrect thermocouple
signal).

15

SYSTEM

SYSTEM LOCKEED FATAL
FAULT

Condition of double error on a burner valve on
all burners (internal controls to the system
regarding the different error signals).

16

SYSTEM

NTC SENSOR FAULT

Condition of each burner in case of incorrect
temperature detection on the power board.

17

SYSTEM

TIME BASE RATIO FAULT

Condition of each burner in case the internal
clock frequency ration is incorrect (32 kHz and
8MHz).

18

SYSTEM

AD CONVERTER FAULT

Condition of each burner in case the valve
control is incorrect (the “ADConverter” on the
power board does not give the requested
measurement).

19

SYSTEM

DATA MEMORY FAU LT

Condition of each burner in case an error in
RAM on the power board is detected.

20

SYSTEM

PROGRAM
C

ONFIGURATION MEMORY

F

AULT

Condition of each burner in case an error in
ROM on the power board is detected.

SOI 04.05 FV 36/57 599 36 62-62

ERROR

COSE

BLOCK ERROR CODE

DESCRIPTION

CAUSE

21

SYSTEM

EPROM MEMORY WRITE
FAULT

Condition of each burner in case a writing error
in EEPROM on the power board is detected.

22

SYSTEM

DATA OUT RANGE FAULT

Condition of each burner in case an error on
the EEPROM of the power board
(configuration parameter not acceptable).

23

SYSTEM

SOFTWARE WATCH DOG
FAULT

Condition of each burner in case of block or
anomalous timing of one of the system tasks.

24

SYSTEM

LOGICAL MONITORING
T

RACING FAULT

Condition of each burner in case of anomalous
or failed execution of a code section.

SOI 04.05 FV 37/57 599 36 62-62

8. TROUBLE-SHOOTING

8.1 TROUBLE-SHOOTING USING ERROR CODES

Trouble-shooting using error codes identifies the component or the exact section of the circuit in
which the fault has occurred.
When the control circuit detects a malfunction, the error code is displayed and depending on the
code, the operation of the burner is stopped or the appliance is switched off. Before executing a
trouble-shooting, check the error code as explained in the chapter “Error codes” and then unlock
the burner or the whole system (see chapter “Automatic burner switch-off”).

8.1.1 ERRORS WITH BURNER BLOCK

The error codes with block of the burner are the following:
1, 2, 3, 4, 5, 6, 7, 8, 10 e 14.

Control Result Cause Solution

Error code
1

(ignition
failed

)

Check for the
presence of
sparks.

The spark is
regular.

Check for the
presence of
gas.

No gas at the input
connection.

No gas output or
gas tap open.

Open the gas
or control the
system.

The spark is not
correct
(anomalous
dischar

ges)

.

Condition

Gas at the input
connection.

Check for the
burner cap
position and
that the flame
warms up the
thermocouple.

Incorrect
distribution of the
flame.

Position
correctly the
cap (clean the
burner if
necessary).

The cap is wrongly
positioned.

The position of the
cap is correct and
the flame warms up
the thermocouple
correctly.

Check for the
thermocouple
connection
relative to the
burner.

Incorrect signal
from the
thermocouple to
the power board.

Reset the
connection and
eventually
clean the
contacts.

The connection is
not loose.

The connection is
correct.

Thermocouple
faulty.

Replace the
thermocouple.

Power board
faulty.

Replace the
power board.

1

SOI 04.05 FV 38/57 599 36 62-62

Check for the
main electric
valve.

Main electric valve
faulty.

Replace main
electric valve.

Incorrect operation
of the electric valve.

Check for the
electric valve
relative to the
burner.

Raplace power
board.

Control Result Cause Solution

Condition

1

Incorrect operation
of the electric valve.

Burner electric
valve faulty.

Replace burner
electric valve.

Correct operation of
the electric valve.

Correct operation of
the electric valve.

Power board
faulty.

Error code 2

÷6

(wrong electric
valve back
signal).

Check for the
connections
between the
power board
and the burner
valve.

Faulty contacts on
the connections.

Reset the
connections
correctly.

Incorrect
connections
between power
board and electric

Correct connections
between power
board and electric
valve.

Power board
faulty.

Replace power
board.

Error code 7

(wrong electric
valve back
signal).

Check for the
connections
between the
power board
and the burner
valve.

Faulty contacts on
the connections.

Reset the
connections
correctly.

Incorrect
connections
between power
board and electric
valve.

Correct connections
between power
board and electric
valve.

Power board
faulty.

Replace power
board.

Error code 10

(safety block
after 4 hours)

60 seconds
after the block
switch on the
burner again as
explained in
chapter
“Automatic
burner switch­off”.

The automatic
burner swtich-off
activated.

Reset the
burner as
explained in
chapter
“Automatic
burner switch­off”.

The burner
operates normally.

SOI 04.05 FV 39/57 599 36 62-62

Control Result Cause Solution Condition

Error code
14

(wrong
thermocoupl
e back
si

g

nal)

Check for the
burner
thermocouple
connection.

Incorrect signal
from thermocouple
to power board.

Reset the
correct
connection and
eventually clean
the contacts.

The connection is
loose.

The connection is
correct.

Thermocouple
faulty.

Replace the
thermocouple.

Power board
faulty.

Replace the
power board.

SOI 04.05 FV 40/57 599 36 62-62

8.1.2 TROUBLE-SHOOTING WITHOUT ERROR CODES
The error codes with total block of the system are the following:

9, 11, 12, 15, 16, 17, 18, 19, 20, 21, 22, 23 and 24.

The error codes 11, 12, 15, 16, 17, 18, 19, 20, 21, 22, 23 and 24 are internal controls for the verification of the
electronic part. When these codes appear, the only solution is the replacement of the power board.

Control Result Cause Result Condition

Error code 9

(the
temperature on
the power
board
exceeded
105°C)

Cool down the
hob for at least
one hour.

Excessive heating
of the hob due to
an incorrect use of
the hob.

Reset the hob
as explained in
the charter
“Automatic
burner switch­off”.

The error code 9
does not appear
anymore.

The error code 9
appears again.

Power board
faulty.

Replace the
power board.

SOI 04.05 FV 41/57 599 36 62-62

8.1.2.1 – SUMMARY TABLE OF ERROR CODES / ACTIONS

SUMMARY TABLE ERROR CODE / ACTION

ERROR

CODE

BLOCK ACTION

0

-- --

1

BURNER

1 Verify the presence of sparks.
2 Verify the presence of gas.
3 Verify the sparks.
4 Verify the position of the burner cap and that the flame warms up the

thermocouple.
5 Verify the thermocouple connections.
6 Verify the main electric valve.
7 Verify the burner electric valve.
8 Replace the power board.

2

BURNER

1 Verify board connections / electric valve of relative burner.
2 Replace the power board.

3

BURNER

1 Verify board connections / electric valve of relative burner.
2 Replace the power board.

4

BURNER

1 Verify board connections / electric valve of relative burner.
2 Replace the power board

5

BURNER

1 Verify board connections / electric valve of relative burner.
2 Replace the power board

6

BURNER

1 Verify board connections / electric valve of relative burner.
2 Replace the power board

7

BURNER

1 Verify board connections / electric valve of relative burner.
2 Replace the power board

8

BURNER

1 Replace the power board.

9

SYSTEM 1 Wait cooling down.

2 Replace the power board.

10

BURNER

1 Unlock the burner.

11

SYSTEM 1 Replace the power board.

12

SYSTEM 1 Replace the power board.

14

BURNER

1 Verify the thermocouple connections.
2 Replace the thermocouple.
3 Replace the power board.

15

SYSTEM 1 Replace the power board.

16

SYSTEM 1 Replace the power board.

17

SYSTEM 1 Replace the power board.

18

SYSTEM 1 Replace the power board.

19

SYSTEM 1 Replace the power board.

20

SYSTEM 1 Replace the power board.

21

SYSTEM 1 Replace the power board.

22

SYSTEM 1 Replace the power board.

23

SYSTEM 1 Replace the power board.

24

SYSTEM 1 Replace the power board.

SOI 04.05 FV 42/57 599 36 62-62

8.2 TROUBLESHOOTING WITHOUT ERROR CODE

Some malfunctioning conditions of the hob can appear without any indication of an error code.
Please find below some troubleshooting cases without error code.

Control Result Cause Solution

One or more
sensor buttons
do not transmit
the control.

Check for the
relative
interface board­power board
connections.

Interface board­power board
connections
incorrect.

Condition

Faulty contacts on
the connections
between interface
board-power
board.

Reset the
connections
correctly.

Interface board­power board
connections correct.

Interface board
faulty.

Replace
interface board.

One or more
Leds, or display
parts are off.

Check for the
relative
interface board­power board
connections.

Interface board­power board
connections
incorrect.

Faulty contacts on
the connections
between interface
board-power
board.

Reset the
connections
correctly.

Interface board­power board
connections correct.

Interface board
faulty.

Replace
interface board.

SOI 04.05 FV 43/57 599 36 62-62

9. ACCESSIBILITY

9.1 REMOVAL OF TOP FROM THE CABINET

To remove the top from the cabinet, move the top from the lower part.

Fig. 41 Fig. 42

9.2 REMOVAL OF GAS SUPPLY CONNECTION

After closing the gas supply, switched off the power supply, remove the top and positioned the top
so as to access the gas connection easily (Ex.: by using wood trims to keep the top raised) detach
the gas delivery pipe (see Fig. 42).

Fig. 43

1 - TOP CASING
2 - 24 mm SPANNER
3 - GAS CONNECTION NUT
4 - GAS DELIVERY PIPE

SOI 04.05 FV 44/57 599 36 62-62

9.3 REMOVAL OF UPPER TOP

To remove the glass upper top after extracting the top from the cabinet:

- Remove the grids and the flame spreader crowns of the burners (see Pic. 43).

Fig. 44

1 - GRID
2 - FLAME SPREADER CROWN

- Remove the 6 screws which fit the upper glass (see Fig. 44).

Fig. 45

1 ÷ 6 - FIXING SCREWS OF THE UPPER GLASS

- Remove the fixing screws of the burners (2 for each burner, see Fig. 45).

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Fig. 46

1 - FIXING SCREWS RAPID BURNER
2 - FIXING SCREWS SEMI-RAPID BURNER (REAR LEFT)
3 - FIXING SCREWS SEMI-RAPID BURNER (REAR RIGHT)
4 - FIXING SCREWS AUXILIARY BURNER

Fig. 47

1 - GLASS UPPER TOP
2 - TOP EXTERNAL CASING
3 – POSITION OF SERIAL NO. PLATE

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9.4 ACCESS TO COMPONENT ZONE

After removing the upper top the various internal components can be accessed (see Fig. 48) .

Fig. 48

1 - LEFT REAR BURNER (SEMI-RAPID)

2 - INTERFERENCE SUPPRESSOR
3 - JUNCTION BOX
4 - IGNITER
5 - RIGHT REAR BURNER (SEMI-RAPID)
6 - MAIN INTERFACE BOARD
7 - POWER BOARD

8 - RIGHT FRONT BURNER (RAPID)

9 - LEFT FRONT BURNER (AUXILIARY)
10 - LEFT FRONT BURNER VALVE
11 - LEFT INTERFACE BOARD
12 - RIGHT FRONT BURNER VALVE
13 - LEFT REAR BURNER VALVE
14 - RIGHT REAR BURNER VALVE
15 - POWER BOARD
16 - MAIN SAFETY VALVE

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9.4.1 DISMOUNTING THE BURNER CONTROL ELECTRICA VALVES

To dismount the burner control electric valve it is necessary:

- Remove the gas output fixing nut from the electric valves (see Fig. 49 Pos. 1).

- Remove the two screws of the electric valve fixing brackets loosen previously the lower screws.

- Detach the power supply connector.

NOTE: The upper screws can be accessed after dismounting the left interface board and the power board. The
lower screws can be accessed from the left lower side part of the hob (see Fig. 50).

Fig. 49

1 - GAS OUTPUT FIXING NUT
2 - GAS INPUT FIXING BRACKET
3 - BURNER CONTROL ELECTRIC VALVE
4 - LEFT INTERFACE BOARD
5 - ELECTRIC VALVE POWER SUPPLY CONNECTOR

Fig. 50

1 - SERVICE SOCKET FOR THE PROGRAMMATION
2 - LOWER SCREW OF FIXING BRACKET OF LEFT FRONT BURNER VALVE
3 - LOWER SCREW OF FIXING BRACKET OF RIGHT FRONT BURNER VALVE
4 - LOWER SCREW OF FIXING BRACKET OF RIGHT REAR BURNER VALVE
5 - LOWER SCREW OF FIXING BRACKET OF LEFT REAR BURNER VALVE

NOTE : After remounting the electric valves, pay attention to fix the screws of the fixing brackets carefully and
check the gas seal.

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9.4.2 DISMOUNTING THE MAIN SAFETY ELECTRIC VALVE

To dismount the main safety electric valve after removing the gas input connection:

- Remove the electric valve connection nut – feed pipe (see Fig. 52).

- Remove the two fixing screws of the electric valve placed at the top bottom (see Fig. 51).

- Detach the power supply cables.

Fig. 51

1 - TOP CASING
2 - FIXING SCREWS OF MAIN SAFETY ELECTRIC VALVE
3 - 24 mm SPANNER
4 - GAS INPUT CONNECTION

Fig. 52

1 - POWER BOARD
2 - MAIN SAFETY ELECTRIC VALVE
3 - ELECTRIC VALVE – FEED PIPE CONNECTION NUT
4 - FEED PIPE
5 - ELECTRIC VALVE CONNECTIONS

NOTE : After remounting the electric valve, pay attention to fix the electric valve-feed pipe connection nut and

check the gas seal.

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9.4.3 REPLACEMENT OF INTERFACE BOARDS

To replace the interface boards:

- Release the board from the fixing plastic clips (see Fig. 54).

- Detach the connector.

Fig. 53

1 - INTERFACE BOARD
2 - FIXING CLIPS
3 - SENSOR CONTROL ZONES

Fig. 54

1 - INTERFACE BOARD

2 - FIXING CLIPS

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9.4.4 REPLACEMENT OF POWER BOARD

To replace the power board:

- Raise the two metallic tabs by using a screwdriver (see Fig. 55 and 56).

- Detach the connectors and the connection terminals making a sign for the position to facilitate the
remounting.

- Remove the board assembly from the top.

Fig. 55

1 - POWER BOARD
2 - SCREWDRIVER
3 - FIXING TAB

Fig. 56

1 - INTERFACE BOARD
2 - FIXING TAB
3 - POWER BOARD

4 - SCREWDRIVER

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To remove the power board from the plastic support release the board from its fixing hooks (see Fig. 56).

Fig. 57

1 - SCREWDRIVER
2 - FIXING HOOK
3 - POWER BOARD
4 - PLASTIC SUPPORT

9.4.5 – REPLACEMENT OF BURNERS

To replace a burner:

- Dismount the spark plug and the thermocouple.

- Remove the nozzle.

- Remove the supply pipe – burner fixing nut.

- Remove the 2 burner fixing screws placed on the top lower part (see Fig. 59)

Fig. 58

1 - BURNER
2 - NOZZLE
3 - IGNITION SPARK PLUG
4 - THERMOCOUPLE
5 - GAS SUPPLY PIPE FIXING NUT - BURNER
6 - GAS SUPPLY PIPE
7 - GAS SUPPLY PIPE FIXING NUT - ELECTRIC VALVE

8 - BURNER CONTROL ELECTRIC VALVE

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Fig. 59

1 - TOP BOTTOM
2 - BURNER FIXING SCREWS

9.4.6 REPLACEMENT OF THERMOCOUPLES

To replace the thermocouples:

- Release the thermocouple removing the fixing spring placed in the lower side part of the burner.

- Detach the thermocouple terminal placed on the power board.
(see Fig. 61)

Fig. 60

1 - THERMOCOUPLE TC4 (WHITE - LEFT REAR BURNER)
2 - THERMOCOUPLE TC3 (RED - RIGHT REAR BURNER)
3 - THERMOCOUPLE TC1 (BLACK - LEFT FRONT BURNER)

4 - THERMOCOUPLE TC2 (BLUE - RIGHT FRONT BURNER)

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Fig. 61

1 - THERMOCOUPLE CONNECTION TC1 (BLACK - LEFT FRONT BURNER)
2 - THERMOCOUPLE CONNECTION TC2 (BLUE - RIGHT FRONT BURNER)
3 - THERMOCOUPLE CONNECTION TC3 (RED - RIGHT REAR BURNER)
4 - THERMOCOUPLE CONNECTION TC4 (WHITE - LEFT REAR BURNER)
5 - POWER BOARD
6 - INTERFACE BOARD

VIEW OF SPARK PLUG AND THERMOCOUPLE FIXING

Fig. 62

1 - THERMOCOUPLE (OR SPARK PLUG)
2 - FIXING SPRING

3 - BURNER BODY

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9.4.7 REPLACEMENT OF IGNITION SPARK PLUGS

To replace the spark plugs:

- Detach the connection terminal relative to the spark plug.

- Detach the spark plug removing the fixing spring placed in the lower side part of the burner.

Fig. 63

1 - IGNITER.
2 - SPARK PLUG CONNECTION TERMINAL.
3 - LEFT REAR BURNER SPARK PLUG.
4 - RIGHT REAR BURNER SPARK PLUG.
5 - LEFT FRONT BURNER SPARK PLUG.

6 - RIGHT FRONT BURNER SPARK PLUG.

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10. ELECTRIC DIAGRAMS

10.1 BASIC ELECTRIC DIAGRAM

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10.2 WIRING DIAGRAM

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10.3 KEY TO DIAGRAM

REF DESCRIPTION

1 Igniter
14 Interference suppressor
74 Earth
84 Power board

113 Timer board
114 Sensor control board
115 Main electric valve
116 Burner electric valve
117 Burner
118 Thermocouple