Language
English
Service Manual
Radiant Hob Manual
Edition
2008.03.01
1 ISSUE MAR. 2008
Service
Manual
GB
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
2
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English
Service Manual
Manuale Piani Radianti
Edition
2008.03.01
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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Service Manual
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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
3
4
5
6
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
12
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.
1
2
3 4
5
6
7
8
13 12
11 10
9
2.1: CLASSIC CONTROL PANEL:
5
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2008.03.01
m
edi um
mm
edi umedi um
b
oost er
bb
oo ostost erer
m
edi um
mm
edi umedi um
b
oost er
bb
oo ostost erer
m
edi um
mm
edi umedi um
m
edi um
mm
edi umedi um
b
oost er
bb
oo ostost erer
b
oost er
bb
oo ostost erer
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
1
2
3
5
4
7
8
13 12
11 10
9
2.2: CONFORT CONTROL PANEL:
6
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Power Power Power Power
1
2
345
6
7
9
10
13
12
11
2.3: PREMIUM CONTROL PANEL:
8
15
14
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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Manuale Piani Radianti
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2008.03.01
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
2
41
3
N1
18
13
12
19
anteriore
destra
postreriore
destra
anteriore
sinistra postreriore
sinistra
3
2
4
4
4
8
6
79
10
11
14
15
17
21
16
20
N2
L3
L2
L1
1a
2a
2a
1a
1a
2a 2a
1a
4a
23
22
2400W
1200W
2300W
1200W
4
5
16A
10A 10A 10A 10A 10A 10A 10A 16A 16A
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Service Manual
Manuale Piani Radianti
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2008.03.01
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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2008.03.01
FAULT CHECK ACTIONSDESCRIPTION
F01
SUBCODE
1
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
• 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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2008.03.01
FAULT CHECK ACTIONSDESCRIPTION
F11
SUBCODE
2
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.
• Replace the corresponding generator board.
• Replace the corresponding generator 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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2008.03.01
FAULT CHECK ACTIONSDESCRIPTION
F12
SUBCODE
1
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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2008.03.01
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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IT
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