Hotpoint Ariston KRO 642 TO X User manual

Brand: Hotpoint Ariston

Model: KRO 642 TO X

Category: Hobs

Type: User manual

This manual is also suitable for

The Hotpoint Ariston KRO 642 TO X radiant hob offers a range of features to enhance your cooking experience. With its four cooking zones, including a special zone, you can cook multiple dishes simultaneously. The intuitive control panel with touch buttons and a digital display allows for precise power adjustment and easy selection of cooking settings. The hob's rapid heating capabilities and residual heat indicators help you save time and energy while cooking. Safety features like the control lock and automatic switch-off provide peace of mind during use.

Language

English

Service Manual

Radiant Hob Manual

Edition

2008.03.01

1 ISSUE MAR. 2008

Service

Manual

RADIANT HOBS

PLATFORM 2008

Model. Comm.

Covered Code

KRO 632 TD X 52968

KRO 632 TD Z 52969

KRO 642 D B 52972

KRO 642 D X 52973

KRO 642 D Z 52974

KRO 642 TO B 52975

KRO 642 TO X 52976

KRO 642 TO Z 52977

KRO 742 DO Z 52980

KRO 742 TO Z 52981

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CONTENTS

Chapter 01: Speciﬁ cations 3

Product label 3

Legend 3

Chapter 02: Control Panel 4-7

Classic control panel 4

Confort control panel 5

Premium control pane 6

Installing and ﬁ tting the appliance 7

Operative features 7

Chapter 03: Components 7-8

Wiring diagram 8

Chapter 04: Technical Assistance 9-12

Demo Mode 9

Autotest procedure 9

Fault Table 10-12

Chapter 05: Disassembly 13

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K I O 6 3 2 D O X ( )

Brand

K: HotpointAriston

T: Scholtès

V: Indesit

N: Ariston (Export)

Typology

R: Radiant

I: Induction

E: Mixed

Controls

typology

A: Classic

without Timer

C: Classic

O: Comfort

L: Comfort Qua-

litative (with

bar graph)

P: Premium

N: Premium

Qualitative

(with bar

graph)

M: knobs

H: without

controls

Dimen-

sions

6: 60 cm

7: 70-75 cm

8: 80 cm

…

Tot num-

ber of

plates

Numbers

of boosters

(induction)/

numbers of

special zones

(radiant)/Mix-

te typology

INDUCTION:

0: no Boosters

1: 1 Booster

2: 2 Boosters

3: 3 Boosters

4: 4 Boosters

RADIANT:

0: no Special

zones

1: 1 special zone

(i.e. 1 double)

2: 2 special

zones (i.e. 1

triple, 1 double)

3: 3 special

zones

MIXTE:

5: halogen/radiant

(1 Halogen)

6: halogen/ra-

diant (2

Halogen)

7: induction/ra-

diant

8: gas radiant

9: gas/induction

Tipology

of special

zones

O: oval

D: double

T: triple

Tipology

of special

zones

O: oval

D: double

T: triple

Aesthetics

X: stainlesteel

frame

Z: Experience

Proﬁ le

B: Bevelled

ﬁ nishing

C: Cristal

F: Frontal Proﬁ le

L: Lateral Proﬁ le

………….

…………….

Colours

“ “: stainlesteel

(if there is

frame or

proﬁ les)

AN: antracithe

lateral

proﬁ les

……

Mod.

.........................

Cod.

44389420100 L

7200W 230/400 V 3N- 50Hz

S/N 606151306

MADE IN EU 06

PIANO TIL 642 S/N 606151306 - 4438942100

1 Industrial

code:

44 38942 0100

Aesthetic and functional

modiﬁ cations

Commercial code

Factory code

2 Serial

Number:

6 06 15 1306

Correlative

Day

Month

Year

CHAPTER 1: SPECIFICATIONS

1.1: PRODUCT LABEL:

1.2: LEGEND:

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CHAPTER 2: CONTROL PANEL

Function buttons

1 POWER and RESIDUAL HEAT indicator displays

the level of heat reached.

2 COOKING ZONE indicator light indicates that the

corresponding cooking zone has been selected

by the user, so it is possible to adjust it.

3 POWER INCREASE button switches on the hot-

plate and adjusts the power of it.

4 MINUTE- MINDER* indicator light indicates that

minute-minder has been set off.

5 PROGRAMMING TIMER* display shows the

programming setting chosen by the user.

6 PROGRAMMED COOKING ZONE* indicator light

indicates the cooking zone concerned when a

programming procedure starts up.

7 ON/OFF button turns on/off the appliance.

8 ON/OFF indicator light indicates that the appliance

is on/off.

9 CONTROL LOCK indicator light indicates that

controls have been locked.

10 CONTROL LOCK button prevents fortuitous mo-

diﬁ cations in hob adjustment.

11 PROGRAMMING TIMER* button adjusts the

programming of the cooking duration.

12 POWER DECREASE button adjusts the power

and switches off the hotplate.

13 COOKING ZONE SELECTION buttons select the

cooking zone desired.

* it is not available in all models.

3 4

13 12

11 10

2.1: CLASSIC CONTROL PANEL:

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Function buttons

1 POWER and RESIDUAL HEAT indicator displays

the level of heat reached.

2 COOKING ZONE indicator light indicates that the

corresponding cooking zone has been selected

by the user, so it is possible to adjust it.

3 COOKING ZONE SELECTION buttons select the

cooking zone desired.

4 PROGRAMMED COOKING ZONE* indicator light

indicates the cooking zone concerned when a

programming procedure starts up.

5 PROGRAMMING TIMER * display shows the

programming setting chosen by the user.

6 POWER INCREASE button switches on the hot-

plate and adjusts the power of it.

7 ON/OFF button turns on/off the appliance.

8 ON/OFF indicator light indicates that the appliance

is on/off.

9 CONTROL LOCK indicator light indicates that

controls have been locked.

10 CONTROL LOCK button prevents fortuitous mo-

diﬁ cations in hob adjustment.

11 PROGRAMMING TIMER* button adjusts the

programming of the cooking duration.

12 POWER DECREASE button adjusts the power

and switches off the hotplate.

13 COOKING ZONE POWER SELECTION buttons

switch the hotplate on and adjust the power of

it.

* It is not available in all models

13 12

11 10

2.2: CONFORT CONTROL PANEL:

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Power Power Power Power

345

2.3: PREMIUM CONTROL PANEL:

Function buttons

1 COOKING ZONE indicator light indicates that the

corresponding cooking zone has been selected

by the user, so it is possible to adjust it.

2 POWER and RESIDUAL HEAT indicator displays

the level of heat reached.

3 MEDIUM* button switches on the cooking zone

adjusting it to the medium level 8.

4 BOOSTER* indicator light indicates that the boo-

ster is triggered.

5 BOOSTER* button sets off the cooking zone

boosting.

6 MINUTE-MINDER* indicator light indicates that

minute-minder has been set off.

7 PROGRAMMING TIMER* display shows the

programming setting chosen by the user.

8 PROGRAMMED COOKING ZONE* indicator light

indicates the cooking zones when a programming

procedure starts up

9 TIME INCREASE* button increases the time

during minute-minder operation and any program-

ming procedure.

10 ON/OFF button turns on/off the appliance.

11 ON/OFF indicator light indicates if the appliance

is on/off.

12 CONTROL LOCK indicator light indicates that

controls has been locked.

13 CONTROL LOCK button prevents fortuitous mo-

diﬁ cation in hob adjustment.

14 TIME DECREASE* button decreases the time

during the minute-minder operation or any pro-

gramming procedure.

15 POWER INCREASE button switches on the hot-

plate and adjusts the power of it.

16 POWER DECREASE button adjusts the power

and switches off the hotplate.

* it is available only in some models

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2.4: INSTALLING AND FIXING THE APPLIANCE

For all the instructions about product ﬁ tting, ventilation, product ﬁ xing to the cabinet, electrical connection, etc., refer

to the handbook you can ﬁ nd inside of the product package.

2.5.1: Operative voltage:

Voltage values assuring the correct operation of the appliance are the following ones listed below:

230 Volts, with a range of +/-10 % and 50 Hz.

2.5.2: Operative feature: Power

It allows reaching the temperature set by the user rapidly, then the function quits automatically

and the hob starts working again at the power previously set by the user.

2.5: OPERATIVE FEATURES

CHAPTER 3: COMPONENTS

Display board

The display board consists of other boards (a Touch board, a Visual board and a Power board) and it controls

the radiant hob operation (it is managed as only one spare-part code in the warehouse).

The Touch board, located in the upper part, detects user instructions. These instructions are displayed by

the Visual board (located between the other two boards), in order to give a feedback of the setting the user

has selected.

The last one, the Power Board, located in the lower part, energizes and controls the electric loads, according

to the setting of the user, energizes the hotplate chosen, controls the operative temperature of the plate,

etc. These actions are carried out by means of general relays (which control the safety of the appliance),

and other relays controlling each hotplate (switching them on/off) and their special zones (if available).

Hotplates

Hotplates, which belong to this platform, are controlled by “Highlight” heaters. Their main features are the

capacity to become incandescent and to reach high temperatures rapidly.

The hotplates can be a single type, having only a “Highlight” heater. There may be also ﬁ tted with a special

zone, that is, a single hotplate with an additional circular zone around the plate; it can also be half-moon

shaped, in “ﬁ sh-kettle” hotplates, etc. Another type of hotplate is the mixed one, which consists of a Highlight

heater and a halogen lamp; this conﬁ guration permits to reduce the time to reach the temperature, because

of the halogen lamp radiation, which optimizes the operation of the hotplate. Lastly, we have the halogen

mixed lamps with a special zone, which is a mix between the single hotplate, ﬁ tted with a halogen lamp,

and the special zone added to it.

Power

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Sensor

Display Board NTC: It is located on the Visual Board, the one between the two other boards which the

Display Board consists of. The main function is to check the temperature on the

zone where controls are located, stopping the appliance operation if it rises (when

temperature reaches 105 °C)

Residual Heat Indicator

In Radiant Hobs, the residual heat indicator light is not controlled by sensors like NTC or PTC, but by sof-

tware.

According to the power set by the user and the time in which the hotplate has been energized, the Display

Board switches on the residual heat indicator light in two different ways: it displays the symbol “H” (capital

letter) to indicate that the temperature on the inductor is very high (over 60°C), and “h” (small letter) to in-

dicate that the temperature of the hotplate is not very high (it is included between 40°C and 60°C).

3.1: GENERAL WIRING DIAGRAM

anteriore

destra

postreriore

destra

anteriore

sinistra postreriore

sinistra

2a 2a

2400W

1200W

2300W

1200W

16A

10A 10A 10A 10A 10A 10A 10A 16A 16A

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CHAPTER 4: TECHNICAL ASSISTANCE

4.1: DEMO MODE:

Getting ready to use Demo Mode:

1. the hob is on

2. all the inductors are off

To select DEMO function, press and hold for 6 seconds TIMER “+” and “-” buttons simultaneously; then

POWER ON and BUTTON LOCK LED will ﬂ ash for 1 second, now press the CLOCK button. The message

“dE MO” will appear on the display every 5 seconds for 1 second.

To quit the function, follow the same procedure you have followed to enter it.

Remark: Demo Mode is available only in hobs ﬁ tted with a TIMER.

If Demo Mode is on, the TIMER indicates the minutes elapsed displaying the seconds.

4.2. AUTOTEST:

4.2.1: Autotest activation sequence:

Getting ready to use Autotest: the hob is off.

Press all the buttons from left to right and from the upper side to the lower side of the interface, without lea-

ving anyone of them. As you touch the icons with your ﬁ nger, the appliance will emit a beep to conﬁ rm it.

4.2.2: Sequence executed by the appliance

During the Autotest, all the inductors are energized beginning from the left-hand one on the lower part (the

ﬁ rst one) up to the right-hand one on the lower part (the last one), in a clockwise order. Every inductor will

be energized at the maximum power for 15 seconds, then in Booster modality for the remaining 15 minutes,

even if the normal operation does not provide for it.

Between the ignition of one inductor and the next one, there is a pause of 30 seconds, to give the engineer

time for changing water contained in the pan during the Autotest.

Inductor Normal operation Booster

Large approx. 9,6 amp approx. 13,0 amp

Smal approx. 6,1 amp approx. 8,7 amp

4.2.3: How Fault are displayed.

If the hob does not indicate a Last Fault, the Autotest sequence will start immediately.

In case the appliance signals a Last Fault, before starting up the Autotest, the Last Fault will be displayed

for 20 seconds, and then, the Autotest sequence starts.

The Last Fault will be deleted from the memory at the end of the whole Autotest sequence.

If the Autotest is interrupted during the execution (because of the hob being turned off or powered off), the

Last Fault is not memorized as statistics, but it will be displayed by the appliance the next time the Autotest

function will start.

Important: The Fault will be displayed in all 7-segment if it affects the whole hob. It will be displayed

by two of the Power Board 7-segment, if the fault is due to one of these two Boards.

If the fault is due to only one Inductor, the Fault will be displayed only in the 7-segment

connected to the Inductor damaged, for example, a Fault to the NTC

4.2.4: Main board programming

There are three ways of programming the Display Board:

1 Using an hand-held/FFA (by means of MemWriter)

2 Using a PC (in UK)

3 Using the Smart Reader and the Smart Card.

At any case, refer to the document about each particular device.

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FAULT CHECK ACTIONSDESCRIPTION

F01

SUBCODE

F01 2

F02 1

F03 1

F03 2

F03 3

F04 1

F05 1

F05 2

F05 3

F06 1

F06 2

4.3: FAULT TABLE:

• Replace the Display board

• Fault Not available

1. Check the correct installation of the Touch-Visual communication Flat

2. Clean Flat contacts and reconnect them

3. Wait 3 minutes without energizing the hotplates. If F03 is signalled

again, replace the display board.

4. If no fault is notiﬁ ed after 3 minutes, energize the hotplates and wait

for 3 minutes. If F03 is signalled, replace the Display Board. If it is

not signalled, it is OK

1. Check the correct installation of the Touch-Visual communication Flat

2. Clean Flat contacts and reconnect them

3. Wait 3 minutes without energizing the hotplates. If F03 is signalled

again, replace the display board.

4. If no fault is notiﬁ ed after 3 minutes, energize the hotplates and wait

for 3 minutes. If F03 is signalled, replace the Display Board. If it is

not signalled, it is OK

1. Check the correct installation of the Touch-Visual communication

Flat

2. Clean Flat contacts and reconnect them

3. Wait 3 minutes without energizing the hotplates. If F03 is signalled

again, replace the display board.

4. If no fault is notiﬁ ed after 3 minutes, energize the hotplates and wait

for 3 minutes. If F03 is signalled, replace the Display Board. If it is

not signalled, it is OK

1. Check the insulation of Display board housing

2. Check Display board NTC calibration (only in Dr.)

3. Replace the Display board

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

Visual board NTC SC

Visual board NTC OC

Comunication VISUAL <--> cookeye/

clipsoeye MODULE

Keyboard not operative (all the but-

tons except for ON/OFF button)

Keyboard: ON/OFF button not ope-

rative

Communication VISUAL <--> TOUCH

Too high temperature of Visual

Board

ISI UART 1 (CN 03): hob NTC SC,

Large induction hotplate

ISI UART 1 (CN 03): hob NTC OC,

Large induction hotplate

ISI UART 1 (CN 03): Large induction

hotplate not connected

ISI UART 1 (CN 03): hob NTC SC, small

induction hotplate

ISI UART 1 (CN 03): hob NTC OC,

small induction hotplate

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FAULT CHECK ACTIONSDESCRIPTION

F11

SUBCODE

F06 3

F12 1

F07 1

F07 2

F07 3

F08 1

F08 2

F08 3

F09 1

F09 2

F09 3

F10 1

F10 2

F11 1

ISI UART 1 (CN 03): small induction

hotplate not connected

ISI UART 2 (CN 04): hob NTC SC,

large induction hotplate

ISI UART 2 (CN 04): hob NTC OC,

large induction hotplate

ISI UART 2 (CN 04): large induction

hotplate not connected

ISI UART 2 (CN 04): hob NTC SC,

small induction hotplate

ISI UART 2 (CN 04): hob NTC OC,

small induction hotplate

ISI UART 2 (CN 04): small induction

hotplate not connected

Incomplete Power setting ﬁ le

Incomplete VISUAL setting ﬁ le

Incomplete TOUCH setting ﬁ le

ISI UART 1 (CN 03): Heat-sink NTC SC

ISI UART 1 (CN 03): Heat-sink NTC OC

ISI UART 2 (CN 04): Heat-sink NTC SC

ISI UART 2 (CN 04): Heat-sink NTC OC

ISI UART 1 (CN 03): Too high tempe-

rature of the heat-sink

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor

1. Check the inductor, verifying that the contacts are well connected

and clean.

2. Check NTC ohmic values (it must not be SC or OC)

3. Replace the inductor if NTC is out of calibration

4. Replace the power board.

NOTE: notiﬁ ed on the corresponding inductor.

1. Program Display board again

2. Replace the Display board

1. Program Display board again

2. Replace the Display board

1. Program Display board again

2. Replace the Display board

• Replace the corresponding generator board.

1. Verify that the fan is correctly wired and that the wiring is intact.

2. Verify that the fan is operative, setting the maximum power.

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FAULT CHECK ACTIONSDESCRIPTION

F12

SUBCODE

F13 1

F14 1

F19 1

F18 1

F17 1

F16 1

F15 1

Remark:

• The Fault marked in black on white background are referred to both the typology of hob

(Radiant and Induction). All the other Fault are referred only to the Induction Hobs.

3. Verify that heat-sink NTC is calibrated.

4. Replace the corresponding generator board.

1. Verify that the fan is correctly wired and that the wiring is intact.

2. Verify that the fan is operative, setting the maximum power.

3. Verify that heat-sink NTC is calibrated.

4. Replace the corresponding generator board.

1. Verify that inductor NTC is calibrated.

2. Replace the inductor.

3. Replace the power board.

1. Verify that inductor NTC is calibrated.

2. Replace the inductor.

3. Replace the power board.

1. Verify that inductor NTC is calibrated.

2. Replace the inductor.

3. Replace the power board.

1. Verify that inductor NTC is calibrated.

2. Replace the inductor.

3. Replace the power board.

1. Power off the appliance, wait 3 minutes and power it on.

2. Check the communication wires of the boards.

3. Check continuity of UART1 wire (CN03)

4. Replace the Display board

5. Replace the power board

6. Power off the appliance, wait 3 minutes and power it on.

1. Check the communication wires of the boards.

2. Check continuity of UART2 wires (CN04)

3. Replace the Display board

4. Replace the power board

ISI UART 1 (CN 03): Too high tempe-

rature of the heat-sink

ISI UART 2 (CN 04): Too high tempe-

rature of the heat-sink

ISI UART 1 (CN 03): Too high tempe-

rature of the large hob

ISI UART 1 (CN 04): Too high tempe-

rature of the small hob

ISI UART 2 (CN 04): Too high tempe-

rature of the large hob

ISI UART 2: Too high temperature of

the small hob

Communication VISUAL BOARD

UART1 <--> EXTERNAL BOARD

Communication VISUAL BOARD

UART2 <--> EXTERNAL BOARD

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CHAPTER 5: DISASSEMBLY

Cooktop disassembly:

1. Remove the screws on the sides of the hob which fasten the base to the glass-ceramic cooktop.

2. Lift the glass-ceramic cooktop.

Display Board disassembly:

1 Remove the cooktop.

2 Lift the Display Board

3 Detach all the connectors of the lower part of the board.

Hotplate disassembly:

1 Remove the cooktop

2 Detach hotplate wires

3 Take the hotplate off the base of the hob

4 Lift the hotplate.

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Hotpoint Ariston KRO 642 TO X User manual

Brand: Hotpoint Ariston

Model: KRO 642 TO X

Category: Hobs

Type: User manual

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