McCulloch | EB356 | Service manual | McCulloch EB356 Service manual

McCulloch EB356 Service manual
SERVICE MANUAL
DISHWASHERS
DIVA EDW 2003
 ELECTROLUX HOME PRODUCTS
ITALY S.p.A.
Spares Operations Italy
Corso Lino Zanussi, 30
I - 33080 PORCIA /PN (ITALY)
Fax +39 0434 394096
Publication no.
(Functionality)
599 36 25-10
“fully integrated” 911 987 …
EN
Produced by:
ZM - Solaro (IT)
Edition: 2004-01
SOI/TD - PR
60 cm BIG
Dishwasher with
electronic control
1
599 36 25-10
TABLE OF CONTENTS
1
2
3
Purpose of this manual ........................................................................................................................... 4
GENERAL CHARACTERISTICS............................................................................................................ 4
CONTROL PANEL AND PROGRAMMES ............................................................................................. 5
3.1
Control panel....................................................................................................................................... 5
3.1.1
3.1.2
3.1.3
3.1.4
3.2
3.3
ON / OFF button (S0)..................................................................................................................................5
Programme buttons (S1÷S6) and options (S7÷S8).....................................................................................5
LEDs for options and warnings ...................................................................................................................5
Display ........................................................................................................................................................6
Wash programmes ............................................................................................................................. 7
Options................................................................................................................................................ 7
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.4
3.5
3.6
3.7
“3 in 1”.........................................................................................................................................................7
Extra rinse...................................................................................................................................................7
“1/2 load”.....................................................................................................................................................7
Sanitising ....................................................................................................................................................8
Eco-drying...................................................................................................................................................8
Delayed start...............................................................................................................................................8
Buzzer (installed on certain models, only)........................................................................................ 11
“Beam on floor” function ................................................................................................................... 11
Selecting a programme..................................................................................................................... 12
Programme execution....................................................................................................................... 13
3.7.1
3.7.2
3.7.3
3.8
Cycle start .................................................................................................................................................13
Cycle execution.........................................................................................................................................13
End of cycle ..............................................................................................................................................13
Modifying a programme .................................................................................................................... 14
3.8.1
3.8.2
3.8.3
3.9
4
4.1
4.2
4.3
5
5.1
Cancelling a programme (reset)................................................................................................................14
Changing a programme ............................................................................................................................14
Interrupting a programme .........................................................................................................................17
Sequence of operations.................................................................................................................... 18
BUILD CHARACTERISTICS ................................................................................................................ 19
Structure ........................................................................................................................................... 19
Hydraulic and functional characteristics ........................................................................................... 19
Water circuit ...................................................................................................................................... 20
ELECTRICAL COMPONENTS AND FUNCTIONS .............................................................................. 21
EDW2003 electronic control system................................................................................................. 21
5.1.1
5.1.2
5.2
Functions provided by the mother board...................................................................................................21
Memories contained in the electronic control system................................................................................21
Specifications of actuators and sensors ........................................................................................... 22
5.2.1
5.2.2
5.3
5.4
Components..............................................................................................................................................22
Sensors.....................................................................................................................................................22
Power feed and selection of programmes ........................................................................................ 23
Fill circuit ........................................................................................................................................... 23
5.4.1
5.4.2
5.4.3
5.4.4
5.5
Pressure switches on fill level and anti-overflow system...........................................................................23
Filling system ............................................................................................................................................23
Anti-flooding device...................................................................................................................................23
Operation of the anti-overflow device........................................................................................................24
Control of water filling ....................................................................................................................... 24
5.5.1
5.5.2
5.5.3
5.6
Static filling................................................................................................................................................24
Dynamic filling...........................................................................................................................................24
Level control..............................................................................................................................................24
Water filling time ............................................................................................................................... 25
5.6.1
5.6.2
5.6.3
5.7
5.8
Static filling time ........................................................................................................................................25
Dynamic filling time ...................................................................................................................................25
Interruptions in water filling .......................................................................................................................25
Level control during washing ............................................................................................................ 25
Washing system ............................................................................................................................... 25
5.8.1
5.9
Control of wash pump ...............................................................................................................................26
Heating.............................................................................................................................................. 27
5.9.1
5.10
Built-in detergent dispenser ......................................................................................................................27
Draining ......................................................................................................................................... 28
5.10.1
5.11
5.12
“Siphon” effect...........................................................................................................................................28
Regeneration system .................................................................................................................... 29
Resin washing ............................................................................................................................... 29
5.12.1
5.12.2
5.13
“Blending” function ....................................................................................................................................30
Table of regeneration values.....................................................................................................................30
Drying ............................................................................................................................................ 30
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5.13.1
5.14
5.15
”Turbo-dry” drying .....................................................................................................................................31
Automatic cycle ............................................................................................................................. 32
Turbidity sensor........................................................................................................................... 32
5.15.1
5.15.2
Detection of dirtiness ................................................................................................................................32
Detection of load .......................................................................................................................................32
5.16
Automatic Programme .................................................................................................................. 32
A GUIDE TO THE DIAGNOSTIC SYSTEM.......................................................................................... 33
6.1
Displaying alarms and enabling mechanical systems ...................................................................... 33
6.2
Table of alarm codes ........................................................................................................................ 34
6.3
Cancelling alarms from memory / testing the LEDs ......................................................................... 36
7
Options that can be selected by the user ............................................................................................. 36
7.1
Buzzer............................................................................................................................................... 36
7.2
Setting the regeneration level ........................................................................................................... 37
7.3
Rinse-aid dispensing ........................................................................................................................ 38
8
Options that can be selected by service personnel .............................................................................. 39
8.1
Extra rinse cycle................................................................................................................................ 39
8.2
Functional test cycle ......................................................................................................................... 40
6
8.2.1
8.2.2
Executing the test cycle ............................................................................................................................40
Phases in the test cycle ............................................................................................................................40
8.3
8.4
Pulse washing................................................................................................................................... 41
Exiting the diagnostic mode.............................................................................................................. 41
9
ELECTRICAL FUNCTIONS.................................................................................................................. 42
9.1
Circuit diagram.................................................................................................................................. 42
9.2
Basic circuit diagram......................................................................................................................... 43
9.2.1
Button to electrical diagrams.....................................................................................................................43
9.3
Table of programmes........................................................................................................................ 44
9.4
Checking components for proper operation ..................................................................................... 45
10
A QUICK GUIDE TO SPECIAL FUNCTIONS ...................................................................................... 47
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1 Purpose of this manual
The purpose of this manual is to provide service personnel (who already have the basic knowledge
necessary for repairing dishwashers) with information on dishwashers equipped with the EDW2003 electronic
control system, which are produced in the Solaro (MI - Italy) factory.
The EDW2003 control system is composed of a main (input) board, a display (output/interface) board
housed in the control panel, and a mother board housed in the lower part of the appliance.
The subjects covered in this manual are:
• General characteristics
• Control panel and programming
• Build features
• Electrical components and their operation
• Guide to the diagnostic system
• Operation of electrical systems
For detailed information on the water circuits and build characteristics of the appliance, refer to the Service
Manual for the “DIVA 60cm” (publication no. 599 35 55-25).
Work on electrical equipment must be performed by qualified personnel, only.
Pull out the power plug before working on internal components.
2 GENERAL CHARACTERISTICS
Important
When the appliance is plugged in, mains voltage is present on all circuit boards even if the
ON/OFF button is OFF.
Power supply
⇒
Total power drawn
⇒
Water supply
⇒
Load capacity
⇒
Dimensions:
- width
⇒
- height
⇒
- depth
⇒
Controls
- Power up / Power down
⇒
- Selection of programmes/options⇒
- Display
⇒
Washing systems
⇒
Water fill level control
⇒
Water heating
⇒
Temperature control
⇒
Drying systems
⇒
Safety systems / Alarms
⇒
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230 - 240 V / 50 Hz (limits 187-254 V)
2300 W
Min. / Max. Pressure: 5 - 80 N/cm2
12 Place settings
59.6 cm
81.8 -87.8 cm (DIVA 60 cm BIG 86.8 – 92.8 cm)
55.5 cm
ON/OFF button
By button (min. 3, max. 9)
2.5 digit display, backlit characters and/or LEDs
Combined / Pulse
Pressure switch + Software
Heating element enclosed in tube (2100 W)
NTC temp. sensor
Activ / Turbo
Full protection of water/electrical systems and Software
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3 CONTROL PANEL AND PROGRAMMES
3.1
Control panel
The configuration of the control panel may vary with:
Type of circuit boards used
Number of pushbuttons for selecting programmes/options
Number of LEDs or backlit characters
Output
Input
3.1.1
ON / OFF button (S0)
This button is installed on all EDW2003 units and is used to turn the appliance on and off.
The button does not lean out from the control panel.
NB: Turning the appliance off does not cancel the programme in progress.
IMportant: Voltage is present on the circuit boards even when the appliance is off!
3.1.2
Programme buttons (S1÷S6) and options (S7÷S8)
The functions and number of buttons depends exclusively on the software in the appliance, which
can be equipped with a minimum of 3 and a maximum of 9 buttons.
The system used for selecting the wash programmes also depends on the configuration of the
model in question.
Buttons S1, S2, S3 are always present because they control special functions. Each button is
associated with a specific programme.
3.1.3 LEDs for options and warnings
OPTIONS:
• 3 in 1
• Extra rinse cycle
• 1/2 load
• Sterilisation
• Eco-drying
• Delayed start
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INDICATORS & ALARMS:
•
Time to end of cycle: lights up when display shows the time remaining until the end of the cycle.
•
No salt: lights up when regeneration salt requires replenishment. If the “regeneration level” is set to
1 (no regeneration) this LED does not light up.
•
No rinse aid: lights up when rinse aid must be added.
•
Water off: lights up when the water feed to the appliance is shut off.
•
Filter: lights up regularly. Reminds user to clean the filters.
•
Door: lights up when door is open.
•
End of cycle: lights up when the cycle has ended.
NB: The operation and presence of the LEDs depends on the software in the appliance. All the LEDs are
located near a “programme” or “option” button and indicate that it has been selected. The LEDs stay lit
during the entire cycle.
3.1.4 Display
The display, which is composed of 2.5 digits, may indicate:
The time in minutes remaining until the end of the programme:
The value is counted down from minute to minute and is updated at the end of every phase in
the programme (when this occurs, the countdown may decrease by more than one minute at a
time or stop for a longer time than previously).
The end of the cycle[0]
The delayed start time in hours, if set (from 1 hr to 19 hrs)
The time decreases one hour at a time; during the final hour, it decreases one minute at a time
The regeneration level selected
The alarm code, if a malfunction has occurred
The status of special functions (disabling of rinse-aid and buzzer)
The status of functions that can be selected by the service technician.
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3.2
Wash programmes
The number and types of wash programmes and options vary with the configuration of the
model.
I3
Short intensive
68
2
☺ ☺ ☺ ☺ ☺
N2
Normal (maximum speed)
50
--
68
1
☺ ☺ ☺ ☺
N3
Delicate
--
55
1
☺ ☺ ☺ ☺ ☺
Delicate without prewash
--
55
1
☺ ☺ ☺ ☺ ☺
Normal 3 rinses
Normal 3 rinses
without prewash
Axx Energy label
Fast Energy label
Auto performance
Energy label
Auto 50-65°C
--
68
2
☺ ☺ ☺ ☺ ☺
68
2
☺ ☺ ☺ ☺ ☺
60 max
55 max
Q1
Q4
Q5
Q6
N4
120’
88‘
100‘
☺
98‘
☺
89‘
☺
102‘
☺
93‘
1
1
☺ ☺ ☺ ☺ ☺ ☺ ☺
☺ ☺ ☺ ☺ ☺ ♦ ☺
162‘
65 max
1
☺ ☺ ☺ ☺ ☺ ☺ ☺
141‘
--
50-68
1
☺ ☺ ☺ ☺
Short
--
50
1
☺ ☺ ☺ ☺ ☺
Soak
Short 30 min
Dish heating
--
-65 max
--
----
♦ ♦
12‘
---
☺ ☺ ☺ ☺ ☺
31‘
Crystal ware and glasses
--
45
1
N6
E1
E4
E5
Auto
3.3
☺
Min. ~
☺
N5
Q7
♦
♦
♦
♦
♦
♦
♦
Eco drying
☺ ☺ ☺ ☺
“Tablet”
2
Bio detergent
68
Extra rinse
Half load
55
3 in 1
No. of rinses
Intensive (maximum speed)
Programme
Sterilisation
Wash (ºC)
I2
Type
Prewash (ºC)
Possible options
-----
♦
♦
☺ ☺
♦
♦ ♦
☺ ♦
☺
134‘
92‘-115’
52‘
30‘
☺
71‘
Options
3.3.1
“3 in 1”
This option is selected by pressing the relative button and remains selected until the button is pushed
again.. The option modifies the phases in the programme to optimise operation when “3 in 1” detergent
tablets are used and is not available in the “Soak” and “Dish heating” cycles:
The length of the programmes and the temperatures are varied to dissolve the detergent tablets
Water exchange (dilution drainage) is diminished
Rinse-aid is not dispensed
Regeneration (washing of resins) is disabled
3.3.2
Extra rinse
This option can be temporarily selected by pressing the relative button, if present, or by using the
“Service” mode (see 10.5.1). It is not available in the “Soak” and “Dish heating” cycles:
A rinse with pulse washing is added that lasts around 9 minutes.
3.3.3
“1/2 load”
•
using the 1/2 load button
When this button on the control panel is pressed, certain parameters in the selected wash cycle are
modified with respect to the standard cycle. The wash cycle is optimised to handle the reduced amount of
dishes loaded into the machine. This option is not available in the “Automatic”, “Short”, “Short 30 min”,
“Soak”, “Crystal ware” and “Dish heating” cycles:
Prewash is skipped (if included in cycle)
Wash temperature is lowered
Programme is shortened (down to a minimum of 36 minutes)
•
using automatic 1/2 load detection
When the 1/2 load button is not installed, certain programmes can be set to automatically detect a
1/2 load by measuring variations in temperature during the first heating phase
The temperature and length of washing are reduced
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This option is not available in the “Short Intensive”, “Intensive Maximum Speed”, “Short”, “Short 30 min.”,
“Soak”, “Dish Heating” and “Crystal Ware” cycles.
3.3.4
Sanitising
This special option sanitises the dishes and is not compatible with the “Crystal Ware” cycle.
During the final hot rinse, a temperature of 68ºC is maintained for 10 minutes.
3.3.5
Eco-drying
This option is temporarily selected by pressing the relative button. It is available in all programmes
with at least 15 minutes of drying time (excluding “Short Intensive”, “Short”, “Short 30 min”, “Soak” and “Dish
Heating”):
Drying time is reduced to only 15 minutes
“Energy Label” programmes are shorted by 39 minutes; all other programmes are shortened by 9
minutes
3.3.6 Delayed start
This option enables the user to delay the start of the washing cycle for a minimum time of 1 hour to a
maximum time of 19 hours from the moment the option is set. The appliance must not be turned off during
the countdown.
Selecting delayed start after the programme has been selected:
1. With door open, turn the appliance on by pressing button S0
The appliance is set to the selection mode.
All the programme buttons and options are now available.
After the desired programme is selected, options can still be chosen as long as they are
compatible with the selected programme.
2. Press the button for the desired programme:
The LED for the selected programme lights up to show that the selection has been made.
The display lights up and the time remaining (from beginning to end of cycle) flashes.
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3. Press delayed start button S7:
The LED for the selected programme is lit.
LED LD7 indicating delayed start is lit.
The display flashes the delayed start time.
Every time button S7 is pressed, the delayed start time increases by 1 hour up to a maximum of 19
hours:
When the selection exceeds 19, the system begins the count again starting from 0.
4. The time set on the display is stored and the countdown to start begins:
The LED for the selected programme is lit.
LED LD7 indicating delayed start is lit.
The display shows the delayed start time.
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Selecting delayed start before the programme is selected:
1. With door open, turn the appliance on by pressing button S0
The appliance starts up in the selection mode.
All the programme buttons and options are now available.
After the desired programme is selected, options can still be chosen as long as they are
compatible with the selected programme.
2. Press delayed start button S7:
LED LD7 is lit.
The display flashes the delayed start time.
NB: Every time button S7 is pressed, the delayed start time increases by 1 hour up to a maximum of 19
hours:
When the selection exceeds 19, the system begins the count again starting from 0.
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3. Press the button for the desired programme:
The LED for the selected programme lights up to show that the selection has been made.
The display lights up and the time remaining (from beginning to end of cycle) flashes.
LED LD7 is lit.
4. Close the door, the time set on the display is stored and the countdown to start begins
The LED for the selected programme is lit
LED LD7 indicating delayed start is lit
The display shows the delayed start time
3.4
Buzzer (installed on certain models, only)
This series of dishwashers is not normally equipped with a buzzer, but some models may have one.
The buzzer is a device that signals the End of cycle and an Alarm should one occur. The buzzer
goes off three times at the end of the cycle and is immediately silenced when the door is opened.
3.5
“Beam on floor” function
In “fully integrated” dishwasher models a device projects a beam of coloured light onto the floor to
indicate the performing of the cycle or alarm conditions. The “beamer” is installed between the door and the
inner door as described in the Service Manual “Accessibility” code 599 35 87-82.
When the end of cycle has been reached the signal of the beamer stops.
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3.6
Selecting a programme
With the dishwasher OFF and door open:
1. Turn the appliance on by pressing button S0
The appliance is set to the selection mode
All the programme buttons and options are now available
After the desired programme is selected, options can still be chosen as long as they are
compatible with the selected programme
Delayed start can be selected; see 3.3.6
2. Press the button for the desired programme:
The LED for the selected programme lights up to show that the selection has been made
The display lights up and the time remaining (from beginning to end of cycle) flashes
With the door open:
Other options or modifications can be added before the door is closed
Delayed start can be selected; see 3.3.6
The programme can begin only when the door is closed
3. The programme starts
The LED for the current phase in the programme is lit
The display shows the time remaining
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3.7
Programme execution
3.7.1
Cycle start
With door closet and after the countdown has elapsed the selected programme automatically starts.
At this point, the delayed start time cannot be changed and no other options can be selected
The programme in progress can be cancelled, see 3.8.1
The programme can be modified, see 3.8.2
3.7.2
Cycle execution
The LED for the selected programme is lit.
The display shows the minutes of wash time remaining.
The time until the end of the cycle is updated at every new phase in the programme.
When the system moves from one phase to another, the time remaining until the end of the
cycle may be lowered more than the actual time elapsed.
When the system moves from one phase to another, the time remaining until the end of the
cycle may stop until the system synchronises.
The beamer projects a beam of light.
3.7.3
End of cycle
The LED for the selected programme is lit.
The display shows “0”.
The LED showing the end of the cycle is lit.
The beamer switches off.
If it is installed and enabled, the buzzer will emit a sequence of sounds at the following intervals:
15 seconds on - 3 minutes off - 15 seconds on – 3 minutes off - 15 seconds on – buzzer
remains off.
The buzzer is disabled as soon as the door is opened.
At the end of the cycle, the “0” on the display can be eliminated by opening and closing the door.
After the door has been closed, the appliance will automatically be set to the selection
mode.
Press the S0 button to turn the appliance off completely.
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3.8
Modifying a programme
3.8.1 Cancelling a programme (reset)
A cycle that is in progress or is programmed to start at the end of the delayed start countdown can be
cancelled at any time:
1. The cycle is proceeding normally with no alarms, the door is closet but:
The LED for the cycle in progress is lit.
The display shows the time remaining until the end of the cycle.
2. Open the door and press the S1 and S2 buttons at the same time for around 2 seconds.
the LED for the cycle in progress flashes.
3. After around 2 seconds all the indicators will turn off.
the cycle has been cancelled.
3.8.2 Changing a programme
1. If the programme has been selected but has not yet started:
The LED for the cycle in progress is lit.
The display shows time remaining until the end of the cycle.
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2. Press the button for the new programme.
The LED for the cycle in progress is lit.
The display shows time remaining until the end of the cycle.
NB: all the options selected previously are cancelled and must be selected again.
3. Before closing the door it is still possible to change the programme choice.
If no button is pressed, once the door has been closed the cycle will start.
NB: The cycle will begin only if the door is closed.
If a delayed start has also been selected:
The programme has been selected but has not yet started.
The LED for the selected cycle is lit.
LED LD7 for delayed start time is lit.
The display flashes the time set for delayed start.
Open the door carefully and press the button for the new programme.
The delayed start time that was previously programmed remains in memory.
The options selected previously are cancelled and must be selected again.
The LED for the new cycle is lit.
LED LD7 for delayed start time is lit.
The display flashes the time until the end of the cycle for around 2 seconds.
The display then flashes the time set for delayed start.
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1. If the cycle is running without alarms, the door is closed but:
The LED for the selected cycle is lit.
The LED that indicates the phase in progress is lit.
2. Open the door and press the button for the new programme for at least 6 seconds.
The LED for the previously selected cycle flashes.
The display shows (but does not flash) the time until the end of the cycle.
3. After around 6 seconds:
The LED for the previously selected cycle turns off.
The LED for the new programme lights up.
The display shows (but does not flash) the time until the end of the cycle.
NB: When a selected programme is modified, the new cycle will generally start from the beginning. The
options selected previously are cancelled and must be selected again.
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3.8.3
Interrupting a programme
Opening the door
If the appliance is in the selection mode:
All the indicators on the control panel stay lit when the door is opened.
Power is supplied to the circuit boards for the entire time the appliance is on.
If the appliance is in the washing cycle:
When the door is opened (carefully), all the indicators on the control panel stay lit for the entire
time that the washer is on.
When the door is closed, the machine automatically resumes the washing cycle.
Shutting off the appliance
1. Shut off the machine by pressing the S0 button (there are no limits on time)
No previously selected option is cancelled
All indicators on the control panel turn off.
2. To restart the cycle, press button S0 once again
The cycle resumes from the point at which it was interrupted, but with a slight delay
No other button needs to be pressed
All the indicators on the control panel appear exactly the way they were before the interruption
Important: If the appliance is turned off or the door is opened for more than 30 seconds during
the drying cycle, the cycle will end after the regeneration phase and the appliance will be set to
the selection mode when it is turned back on.
Power failure
1. If a drop in mains voltage occurs, the appliance behaves as it had been shut off by pressing button S0.
When the mains voltage is restored, the appliance behaves as it were turned on by pressing
button S0.
When the power is restored after a power failure, the cycle automatically resumes from the point
where it was interrupted and no button needs to be pressed.
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3.9
Sequence of operations
SELECTING THE CYCLE
1. Open the door.
2. Press button S0 to turn the appliance on.
3. Select the desired programme.
END
EXECUTION OF CYCLE
START
4. Select the delayed start time (if desired)
or the desired option (if permitted in the
programme selected)
5. The delayed start countdown or the
selected cycle will automatically start
after closing the door
6. The time until the end of the cycle (in
minutes) will decrease. The time is
updated at each new phase in the cycle
7. To interrupt a programme in progress,
turn off the machine using the S0 button
or open the door
NB: to restart, press the S0 again and/or
close the door
8. To cancel a programme in progress,
press the S2 – S3 buttons at the same
time for 2 seconds
At the end of the programme, the buzzer
(if installed) will sound a number of times,
the END OF CYCLE LED will light up,
and [0] will appear on the display
9. Press the S0 button to turn the appliance
off
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4 BUILD CHARACTERISTICS
4.1
Structure
The appliance can be subdivided into four main assemblies:
- BASE AREA – DOOR AREA – TUB AREA – WATER UNIT
The machine is housed in an assembly of individual removable
parts composed of a front panel at the bottom and two side
panels.
4.2
Hydraulic and functional characteristics
Turbo Dry Fan
Drying duct
Fill tank + Condenser
Counterweight
Base
Heating element
Water
softener Sump
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Drain pump
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4.3
Water circuit
LEGEND
1 - Fill hose
2 - Fill hose with "Acquacontrol" device
3 - Fill solenoid
4 - Regeneration solenoid
5 - Air-Break
6 - Steam condenser
7 - Regeneration chamber
8 - Salt tank
9 - Resin tank
10 - Level pressure switch
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11 - Anti-overflow pressure switch
12 - Sump assembly
13 - Wash pump
14 - Heating element (enclosed in tube)
15 - Drain pump
16 - One-way valve
17 - Drain hose
18 - Drying duct/Fan
19 - Anti-flooding device
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5 ELECTRICAL COMPONENTS AND FUNCTIONS
5.1
EDW2003 electronic control system
The EDW2003 electronic control system is composed
of a main board (“input board”) and a display board (“output”)
that are housed in the control panel, and a “mother board” (fig.
1), which is located at the bottom of the appliance (toward the
front). The board is anchored to the base by a plastic support.
fig. 1
5.1.1
Functions provided by the mother board
INPUT AND OUTPUT BOARDS
LEDs
Display
Buttons
µP
SENSORS
(Buzzer)
MAIN BOARD
ELECTRIC
LOADS
Acquires cycle programming through the input and output boards.
Powers all the electrical components (solenoids, wash pump, detergent/rinse aid dispenser, drain
pump, heating element, fan motor)
Controls the temperature of the wash water using a signal from an NTC sensor, and controls the
speed of the wash pump using a signal from a tachometric generator.
Monitors the pressure switches and the rinse aid / salt sensors.
5.1.2
Memories contained in the electronic control system
µP
External serial
port
Asynchronous
ROM
Power failure and
machine status
RAM
Internal serial
port
Synchronous
EEPROM
Configuration of
appliance
Description of
cycle
The main board is equipped with an EEPROM that is external to the microprocessor and which is
used to store data on machine configuration, description of the cycle, and status of the cycle in case of a
power failure or alarm.
The configuration data is programmed at the factory by a computer with a DAAS interface. This
data determines the operation of the appliance (number and types of programmes, options, LEDs, etc.).
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5.2
5.2.1
Specifications of actuators and sensors
Components
TYPE OF COMPONENT
POWER RATING
TYPE OF CONTROL
Wash pump
Max 250W
Triac
Drain pump
Max 100W
Triac
Heating element
Max 2100W
Relay
Water fill solenoid
Max 10W
Triac
Regeneration solenoid
Max 10W
Triac
Detergent and rinse-aid solenoid
Max 10W
Triac
Fan motor
Max 10W
Triac
5.2.2
Sensors
TYPE OF SIGNAL
TYPE OF
COMPONENT
Salt sensor
Digital 5 Volt
Reed
Rinse-aid sensor
Digital 5 Volt
Reed
Analogue 5 Volt
* NTC
Analogue 5 Volt
Opto-electronic
Frequency
Tachometric generator
Level sensor
Digital High voltage
Pressure switch
Door closure sensor
Digital High voltage
Switch
Anti-flooding sensor
Digital High voltage
Switch
SENSOR
Temperature sensor
Turbidity sensor
(on certain models, only)
Tachometric sensor
*
NTC temperature sensor
COMPARATIVE TABLE OF * NTC VALUES
Temperature
10°C
25°C
60°C
90°C
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Nominal value Ω
9655
4850
1205
445
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5.3
Power feed and selection of programmes
The main board is powered up when power
button (PU) contacts 1-5 and 2-4 are closed. The
connectors involved are A2 (neutral) and B1
(line).
The control/display board (user interface) is
powered by 5V supplied by the main board, so
programmes can be selected when the main
board is turned on.
When the door is closed, the main board detects
the closed contacts on switch (IP) between
connectors B2-D1 and starts the wash
programme. The same switch supplies power to
the electrical components.
When the door is opened, power is shut off to the
various loads and the cycle is paused.
5.4
Fill circuit
5.4.1 Pressure switches on fill level and anti-overflow system
The level of water during filling is controlled by level pressure switch (A)
• The anti-overflow pressure switch (B) makes sure that the level of
water during filling does not exceed the safety threshold (overflow
through the door).
5.4.2
B
A
Filling system
The fill solenoid is powered by triac
TY2 on the circuit board (connector C7) through
the door switch (IP) and the anti-flooding
microswitch (DA).
The water level in the sump is
controlled by pressure switch (RL). The circuit
board constantly monitors the status of the
pressure switch through the “sensing” line
connected to connector C5:
“EMPTY” if contacts 1-2 are closed
“FULL” if contacts 1-3 are closed
5.4.3
Anti-flooding device
When the anti-flooding device is tripped, contacts (DA) on the relative microswitch open and cut off
power to the solenoid.
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5.4.4
Operation of the anti-overflow device
If the pressure switch (PA) on the antioverflow system is activated, the closed “FULL”
contact (1-3) starts the drain pump (PS), which
operates until the contact switches to “EMPTY”
(1-2).
If the door is opened or the machine is
shut off, the drain pump shuts off.
5.5
Control of water filling
The quantity of water required to perform the washing cycle is exclusively determined by the closure
of the electrical contacts in the pressure switch when it switches from EMPTY to FULL.
In order to keep a constant amount of water in the machine, if the pressure switch should re-open to
EMPTY, fresh water is introduced until the switch returns to FULL. The fill cycle is subdivided into the
following sub-cycles:
5.5.1
Static filling
With the motor switched off, the fill solenoid is activated and water is introduced into the appliance
until the pressure switch switches to FULL.
5.5.2
Dynamic filling
Dynamic filling occurs by starting the wash pump, which causes the pressure switch to switch to the
EMPTY position. At this point, the fill solenoid is actuated and water enters until the pressure switch moves
to the FULL position.
The speed of the motor determines the quantity of water loaded into the machine: the electronic
control system actuates the wash pump at a speed that depends on the washing system that will be
executed after the machine fills:
If washing is «ctrl» (constant speed): the motor is gradually accelerated to 2800 RPM.
If washing is «PW» (pulse): the motor is gradually accelerated to 1900 RPM.
N.B.- For more information on these washing systems, see the table of washing programmes.
5.5.3
Level control
The water circuit operates with greatest efficiency when the pressure switch remains constantly on
FULL, since the water contained in the sump enables the pump motor to operate constantly and without the
fluctuations in speed that are caused when the pump cavitates.
The fill solenoid is disabled when the pressure switch is set to FULL.
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5.6
Water filling time
The maximum time that the fill solenoid stays open is subdivided over various sub-phases in the fill
cycle.
5.6.1
Static filling time
S.T. = max 90 seconds: this is the maximum time allowed for the pressure switch to switch to
FULL. If the switch does not move to FULL within the established time, the electronic control system signals
an alarm [1 0] and interrupts the washing cycle.
5.6.2
Dynamic filling time
D.T. = S.T. x 3: this is the maximum time allowed for the pressure switch to switch to FULL during
the entire fill phase.
• If the pressure switch does not switch to FULL within the time allowed (S.T. x 3) the electronic control
system shuts off the fill solenoid and the heating element (if it is on), and then completes the washing
cycle. When this occurs, alarm [F0] is stored internally but is not shown to the user. The alarm can only
be displayed to the service technician through a specific procedure.
• During dynamic filling for washing at 2800 RPM, if the pressure switch fails to switch to the FULL during
the first 60 seconds, the electronic control system signals an alarm [1 0] and interrupts the washing
cycle.
5.6.3
Interruptions in water filling
If the fill cycle is interrupted by opening the door or a power failure, the elapsed time up to that point is
stored. When the door is closed or power is restored, water filling will resume from the point of interruption
and the operating time from that point will be added to the previous time.
5.7
Level control during washing
When the fill phase is complete, the appliance shifts to the washing phase. During this phase, which
is executed with cold or heated water, the status of the pressure switch is monitored constantly to ensure
that the water system is operating efficiently, and the water level is topped up if necessary.
If the pressure switch returns to EMPTY during washing, the fill solenoid is activated for a maximum
time of S.T. x 3 (maximum total fill time).
If this time is exceeded, the washing cycle is completed but no more water is introduced. When this
occurs, an alarm [F0] is stored internally but not shown to the user. The alarm can only be displayed to the
service technician through a specific procedure.
5.8
Washing system
This appliance features the conventional washing system in
which mechanical washing action is obtained from the wash pump,
which circulates water through the water circuit, thus rotating the two
spray arms simultaneously.
The wash pump, which is equipped with a tachometric
generator, is powered by an asynchronous motor equipped with a
starting capacitor (3µF – 450V).
The motor rotates anti-clockwise (as seen from the side of the
impeller).
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To optimise washing performance, this appliance offers two different washing systems:
«ctrl»
«PW»
Washing at a constant motor speed of 2800 RPM.(max. motor speed).
Variable-speed (pulse) washing at 1600 > 2800 RPM. This system is controlled by the
electronic control system, which sequentially activates the washing motor at two different
speeds (a minimum and maximum speed) for brief intervals.
MOTOR SPEED
PERIOD OF TIME
Normal
1600 RPM
4 sec
Pulsation PW1
2800 RPM
0.8 sec
The motor speeds for «ctrl» and «PW» can be programmed; for further information, see the table of cycles
for the specific model.
5.8.1
Control of wash pump
The wash pump (PL) is powered by triac TY4 on the main board (connector C3), through the door
interlock switch (IP) and the start button (PU).
The main board controls the speed of the pump motor using the signal from the tachometric
generator (T), connected across connectors E1-E2.
This signal is used for:
Controlling washing systems «ctrl» and «PW»
Controlling the safety systems on the pump motor, and the relative alarms
Controlling dynamic filling
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5.9
Heating
The heating element, which is enclosed
in a tube, is used to heat the wash water (it
does not operate during drying). The element is
installed on the intake to the wash pump and is
connected to the tube that feeds the upper
spray arm.
The heating element (RR) is connected
to relay RL1 on the main board (connector A1),
the start button (PU), and the pressure switch
controlling the fill system (RL), which must be
set to FULL (contacts 1-3 closed).
Two safety thermostats are installed on
the heating element:
- one thermostat resets automatically (and
trips at 98ºC)
- the other is a fuse (that opens at 206ºC)
The temperature of the water is
controlled by the main board using the signal
from an NTC sensor (ST) connected to
connectors G5-G6.
5.9.1
Built-in detergent dispenser
This dispenser consists of a plastic container divided into two separate
compartments which contain detergent (A) and rinse-aid (B).
It is engaged by a single coil connected to a mechanical system that
actuates both functions.
When the coil is activated, it moves a set of levers that engage the
mechanism, which first delivers the detergent and then delivers the rinse-aid.
B
A
The dispenser coil (DD) is powered by
the main circuit board through triac TY5
(connector D7) at the proper points in the cycle.
The circuit is closed through the
contacts in the start button (PU) and the door
switch (IP).
Some models are equipped with a
rinse-aid sensor with a reed contact (SB)
connected to connectors F3-F4 on the main
board.
If there is no rinse-aid, the reed contact
is closed and the relative LED (on the display
board) lights up.
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5.10 Draining
The drain pump (PS) is powered by
triac TY3 (connector C1) through the contacts
on the start button (PU) and the door switch
(IP).
At the end of the drain phase, a check
is made to verify whether the contact on the
pressure switch is open (in the EMPTY
position). If it is open, the cycle is allowed to
move on to the next phase.
If malfunctions in the drain system keep
the pressure switch stuck on FULL (presence of
water in the water circuit), the drain phase is
repeated.
After the drain phase is repeated, the
electronic control system again checks the
status of the pressure switch. If it is still on
FULL, a drain failure alarm [i20] is signalled.
The timeout for each of the two drain phases is
120 seconds.
Note: Washing programmes always begin with a drain phase.
5.10.1 “Siphon” effect
If the drain tube is incorrectly positioned, the so-called “siphon effect” may occur, in which case an
alarm is displayed iF0 (see 9.1).
The problem is particularly likely to occur during execution of the “declaration cycle”: although the
drain pump shuts down at the end of the (partial) drain phase, water continues to be expelled from the
machine because the drain tube is incorrectly positioned. When this occurs, water loaded by the fill solenoid
during the next phase is directly expelled, so the “full contact” on the pressure switch does not close before
its “time out”.
Thus, if alarm iF0 occurs, it is a good idea to make sure the drain tube is correctly positioned as
shown in the instruction manual.
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5.11 Regeneration system
Regeneration of the water softening system, which takes around 4 min, is usually performed at the
start of the drying phase.
Every time regeneration is performed (with activation of regeneration solenoid 4), the accumulation
chamber is completely emptied of its contents (about 230 cc of water).
Regeneration is not carried out at every washing cycle, but at intervals that are determined by the
programmed regeneration level:
If regeneration level [1] is selected (no regeneration), regeneration is never performed and the
"SALT" LED does not light up
If regeneration level [10] is selected, regeneration is performed twice every cycle: at the end of the
washing phase and at the beginning of the drying phase.
The regeneration solenoid (ER) is powered by triac TY1 (connector C9 on the main board) through
the start button (PU) and the door switch (IP).
Some models may be equipped with a salt sensor, whose reed switch (SS) is connected to
connectors F1-F2 on the board.
If there is no salt in the machine, the contact closes and lights up the relative LED (on the display
board).
5.12 Resin washing
The resins in the water softening system are washed at the beginning of every washing cycle. Salt
water solution (regeneration water) remains in the resin container from the time the cycle is completed until
the time next cycle is carried out.
If regeneration level [10] is selected, resin washing is carried out twice every cycle: at the beginning
of the washing cycle and immediately after the regeneration procedure performed at the end of the final
washing phase.
The sequence of phases is as follows:
a. Drainage for 30 seconds
b. Water fill to normal level
c. Water draining for 10 sec.
d. Water filling for 15 sec.
e. Complete draining
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5.12.1 “Blending” function
This function is performed inside the fill tank during the water fill phase. Depending on the position
of the selector, softened water is automatically blended with the unsoftened water present in the appliance.
The softened water is introduced from the softening system into the sump, while the unsoftened water flows
through an open by-pass valve directly through the steam venting ring.
When the regeneration system is set to levels [1-4], it is advisable to activate the BLENDING
function to mix softened water with unsoftened water.
This function optimises the consumption of salt, thus preventing corrosion of glassware when the
water is very soft.
When the BLENDING function is activated, the percentage of
unsoftened water introduced into the dishwasher is 15%.
The BLENDING function is activated using the selector knob located
inside the tub, on the left side, in the vicinity of the steam venting grille:
Position of selector
position 1 = blending enabled.
position 2 = blending disabled.
5.12.2 Table of regeneration values
Level
1
2
3
4
*5
6
7
8
9
10
Water fill between
Time
Position of
regeneration
regeneration
tank
Display
procedures
solenoid opens
selector
litres
sec
no.
1L
--0
1
2L
130
240
1
3L
94
240
1
4L
70
240
1
5L
53
240
2
6L
37
240
2
7L
20
240
2
8L
15
240
2
9L
10
240
2
10 L
3
2x240
2
* “5” = Level set at factory
Position of tank selector: “2”
Hardness of water
treated
º F (TH)
0>8
9 > 14
15 > 20
21 > 30
31 > 40
41 > 50
51 > 60
61 > 70
71 > 80
81 > 90
º D (dH)
0> 4
5>8
9 > 11
12 > 17
18 > 22
23 > 28
29 > 33
34 > 39
40 > 45
46 > 50
5.13 Drying
ACTIV-DRY
TURBO-DRY
In these dishwashers, the dishes
are dried by a steam condensation
process. This drying system is
based on the natural circulation of
the hot air produced during the hot
rinse, when steam circulates inside
the condenser on the fill tank.
The condenser is a (cold wall)
condensation chamber filled with
water, against which the hot air is
ducted. This contact between the
hot air and the cold wall generates
a process of condensation.
The type of drying system can be
either “activ-dry” or “turbo-dry”,
depending on the model of
machine.
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5.13.1 ”Turbo-dry” drying
On some models, a forced-air drying
system is used. Steam is drawn in by a fan
inside the upper duct and then ducted towards
the condenser in the fill tank, from where it
returns to the tub via the steam venting ring.
The fan motor (MV) is powered by triac
TY6 (connector D3 on the main board) through
the start switch (PU) and the door switch (IP).
The drying time is variable and pre-defined for
each washing cycle.
In some programmes, the fan operates
for around 20 minutes even after the end of the
cycle. It shuts off (and will not restart) when the
door is opened.
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5.14 Automatic cycle
5.15 Turbidity sensor
Some models fitted with a turbidity sensor can be equipped with a special
“Automatic” programme that optimises the cycle to compensate for the quantity of
dishes loaded and the amount of dirt on them. The sensor is located on the outside of
the sump and directly contacts the water.
The NTC sensor that controls wash water temperature and the infrared
turbidity sensor that checks the turbidity of the water (and thus the amount of dirt
deposited on the dishes) are contained in a single component..
5.15.1 Detection of dirtiness
The degree of turbidity is measured during the
cold prewash. A LED powered by the main
board (connector G7) projects a beam of light
at a photo receiver.
In the photo receiver circuit (connector G8 on
the main board - G6 is the common
connection), a current circulates that is
proportional to the amount of light received
(and is thus inversely proportional to the
degree of turbidity).
The microprocessor measures the
signal in the circuit and determined the most
appropriate cycle for the amount of dirt
dissolved in the water.
5.15.2 Detection of load
The quantity of dishes loaded (full or 1/2 load)
is detected during the first heating phase in the
washing cycle by measuring the speed of water
temperature increase (NTC sensor, connector G5).
temperature
1/2 load
threshold
Full load: when the slope of the curve is less
than the programmed standard threshold
Half load when the slope of the curve is
greater than the programmed standard
threshold
full load
time
5.16 Automatic Programme
Shown below are the variations in programme phases which are made as a function of dirt level and
load.
Type
Load
Full
Full
Half full
Half full
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Phases in the programme
Very
dirty?
Yes
No
Yes
No
Prewash
Wash
cold
68º C
55º C
55º C
50º C
First rinse
Second rinse
Hot rinse
Drying
68º C
24 min.
cold
cold
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6 A GUIDE TO THE DIAGNOSTIC SYSTEM
A single procedure is used to access the diagnostic system, also known as the Service mode. Once
this mode is accessed, it is possible to read / cancel alarms, check the various components in the appliance
for proper operation, start a diagnostic cycle and select options that are only available to service personnel.
1. Turn off the appliance.
2. Press and hold down buttons S1-S3 at the same time.
3. Turn on the appliance using button S0 while holding down buttons S1-S3 until LEDs LD1, LD2, LD3
begin to flash.
6.1
Displaying alarms and enabling mechanical systems
1. Access the diagnostic mode (see 10.1)
2. Press button S1 to activate this function
LEDs LD2, LD3 turn on, while LD1 continues to flash
The display shows the first alarm stored [ ix0 ] (to decode the alarm, see the table listing the alarms
on pages 27, 28).
3. Press button S1 repeatedly to display the other two alarms and to enable various electrical components.
After the first three alarms, the display shows the number corresponding to the function enabled
4. All the display positions can be repeated by pressing button S1 repeatedly.
Display
0
0
i 0
4
5
6
7
8
9
10
11
12
i
i
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Function activated
Display of last alarm that has occurred
Display of the next to last alarm that has occurred
Display of the third to the last alarm that has occurred
Activation of regeneration solenoid
Activation of drain pump
Enable water fill solenoid until level reached
Heating (only with water at operating level!)
Wash pump at 2800 RPM
Detergent/rinse-aid dispenser
Drying fan (if turbo-dry)
Activation of auto-dosing (currently not used)
Activation of water hardness sensor (currently not used)
Power is supplied to components when the door is closed: open the door to
select another activation and then close it again. If the button S1 is not
pushed, the system automatically exits the diagnostic mode after 60 sec.
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6.2
Table of alarm codes
When an abnormal situation occurs that may interfere with machine functioning, the main board activates a safety system which in most cases interrupts the
washing cycle. The last three alarm situations are stored in memory. Using a special procedure, service personnel can display all the alarms stored in memory. The
user is only shown four of the alarms in progress.
The alarms are shown on the display and signalled with “beeps” from the buzzer (only on certain alarms).
Type of
alarm
Shown to
user?
Description of ALARM
yes
Water fill time-out
(the pressure switch has not switched to
FULL within 90 sec. of static filling, or
never switches to FULL during the first
60 sec. of dynamic filling at 2800 RPM)
The drain pump starts and then
the cycle stops
i20
yes
Water drain time-out
(the pressure switch has not returned to
EMPTY after two drain phases lasting
120 sec.)
The drain pump starts and then
the cycle stops
i30
yes
Intervention of anti-flooding device
(drain pump operates)
The cycle stops and the drain
pump starts.
yes
Short circuit on motor triac
(wash pump operates continuously at
maximum speed)
Water fills to operating level (if
necessary), other mechanical
systems fail to operate and cycle
stops. The washing motor
operates at max. speed and alarm
is displayed.
Faulty circuit board
no
Heating time-out
(heating is checked every 3 minutes: the
temperature must increase by a certain
value every time)
The programme is fully executed
without heating (and with poor
washing performance)
Faulty heating element; Safety thermostats have
tripped (open); Faulty wiring; Faulty NTC sensor
(poor thermal contact); Poor water circulation in
tub; Faulty wash pump (impeller stripped) Faulty
circuit board
i10
i50
i60
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Possible causes
Tap closed; Water mains pressure too low; Drain
solenoid / wiring faulty; Pressure switch on water
circuit plugged; Level pressure switch / wiring
faulty; Faulty circuit board (short circuit on solenoid
triac)
Drain circuit plugged / clogged; Drain pump faulty /
obstructed (foreign bodies); Level pressure switch
stuck on FULL (1-3); Pressure switch on water
circuit plugged; Faulty wiring;
Faulty circuit board.
Water leakage from tub – sump and various
couplings (pumps, line to upper spray arm,etc.);
Floating sensor jammed; Faulty microswitch; Fill
solenoid jammed; Faulty circuit board (short circuit
on solenoid triac). Faulty wiring.
Type of
alarm
Shown to
user?
Description of ALARM
Status of machine
i70
no
Short circuited or open NTC sensor
The programme is fully executed
without heating (and with poor
washing performance)
i80
no
Communication error between
microprocessor and EEPROM
Machine controls inoperative. (*)
Faulty circuit board
i90
no
Improper software configuration
Faulty circuit board
(Improper software configuration).
ib0
no
Problem with turbidity detection
(if so equipped: calibration timeout)
no
Problem with washing motor: no
signal from tachometric generator
(wash pump operates, but there is no
signal from the generator)
Machine controls inoperative
when unit is turned on. (*)
The programme runs as though a
“very dirty” situation were
detected
Disconnect the heating element; if
the problem persists after timeout,
the wash pump will operate at
max. speed and an alarm is
recorded (the cycle continues)
id0
Display
iF0
no
i0
no
Water additions time-out
(3 times length of S.T. time-out)
The cycle continues until the next
phase with no added water and
no heating . The fault is corrected
after a drainage phase is
completed.
Possible causes
Faulty NTC sensor; Short circuit / open circuit in
wiring; Faulty circuit board
Faulty turbidity sensor; Faulty wiring to sensor;
Faulty circuit board
Motor winding open / short-circuited; Motor jammed
(foreign bodies); Faulty wiring to washing motor;
Faulty motor capacitor; Tachometric generator
open / short-circuited; Faulty circuit board
Dishes overturned; Main filter clogged; Excessive
foam; Poor seal on coupling between sump and
pressure switch;
Faulty pressure switch / poor connections;
Domestic drain outlet improperly positioned (siphon
effect, see 5.10.1)
No alarm has been stored.
(*) If it is impossible to access the diagnostic mode, turn off and then turn on the machine to see whether a temporary block has occurred. Before replacing the circuit
board, make sure it is receiving power. Check the following:
The continuity of the power cable, the operation of the radio interference filter, the (closed) condition of the contacts on the door interlock switch, the continuity
between connectors A2 / B1 on the board and the radio interference filter.
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6.3
Cancelling alarms from memory / testing the LEDs
Every alarm should be cancelled after it has been read and after the appliance has been repaired, in order
to know whether the alarm has occurred again when the next diagnostic test is run.
1. Access the diagnostic mode (see 6).
2. Press button S2 to cancel the alarms:
All the LEDs and the digit [188 ] flash for approx. 30 seconds.
This function ends automatically with the machine setting itself to the selection mode.
7 Options that can be selected by the user
7.1
Buzzer
The buzzer can be disabled by pressing a combination of buttons:
1. Turn on the unit by pressing button S0.
2. Cancel any cycles that have been selected (see 3.8.1).
3. Press buttons S1-S2 at the same time until LEDs LD1, LD2, LD3 begin to flash.
4. Press button S3. LEDs LD1, LD2 turn off and LD3 continues to flash.
the status of the buzzer is shown on the display: 1b buzzer enabled, 0b buzzer disabled
5. Press button S3 again to toggle the function.
6. To store the operation: press button S0 to turn off the appliance; or wait 60 seconds and it will
automatically enter the selection mode.
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7.2
Setting the regeneration level
The count for “as needed” execution of the regeneration cycle is made by the electronic control
system based on the duration of the fill phases and thus on the quantity of water loaded (and not on the
number of cycles executed).
The adjustment is made over 10 levels. If level [1] is selected, regeneration is not performed and the
salt LED does not light.
1. Turn on the appliance by pressing the S0 button.
The appliance is automatically set to the selection mode.
2. Simultaneously press and hold down the S1 and S2 buttons:
LEDs LD1, LD2 and LD3 begin to flash, which shows the machine will accept new programming.
3. Press the S1 button to call up this function:
LED LD1 continues to flash.
LEDs LD2 and LD3 turn off.
the display shows the current setting.
see the table listing the regeneration values.
4. When the S1 button is pressed repeatedly:
LED LD1 continues to flash.
the display shows the current setting.
the regeneration level is increased stepwise until it reaches 10L.
5. To store the new setting:
Shut off the appliance using the S0 button.
Wait 60 seconds.
All the indicators on the control panel shut off.
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7.3
Rinse-aid dispensing
Rinse-aid dispensing can be disabled by the user by pressing a combination of buttons. The rinse-aid LED
(if present) also shuts off:
1. Turn on the appliance by pressing the S0 button
The appliance is automatically set to the selection mode
2. Simultaneously press and hold down the S1 and S2 buttons:
LEDs LD1, LD2 and LD3 begin to flash, which shows the machine will accept new programming
3. Press the S2 button to call up this function:
LED LD2 continues to flash
LEDs LD1 and LD3 turn off
the display shows the current setting
0d, function enabled
1d, function disabled
4. Press the S2 button to toggle the function:
LED LD2 continues to flash
the display shows the current setting
0d, function enabled
1d, function disabled
5. To store the new setting:
Shut off the appliance using the S0 button
Wait 60 seconds
All the indicators on the control panel shut off
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8 Options that can be selected by service personnel
In certain cases when the user is not satisfied with washing performance, service personnel can use
a special procedure to select two supplementary options that improve performance:
• Extra rinse (cold)
• Disabling of pulse washing (PW), enabling of continuous washing (Ctrl)
8.1
Extra rinse cycle
The following procedure can be used to include a supplementary cold rinse in all washing programmes,
which improves rinsing action when necessary.
1. Access the diagnostic mode (see 6).
2. Simultaneously press the S1 and S2 buttons until the LEDs LD1, LD2 and LD3 start to flash.
3. Press S1 button, the LEDs LD2 and LD3 switch off while LD1 continues to flash.
The display indicates the function status: [ 0A ] extra rinse not selected, [ 1A ] extra rinse selected.
4. Press the S1 button to toggle the function.
5. To store the new setting: shut off the appliance using the S0 button, or wait 60 seconds (the appliance
will automatically be set to the selection mode).
NB: If the appliance has a button for an “Extra rinse” option, the LED for the option will operate backwards IF
THE OPERATION DESCRIBED ABOVE IS PERFORMED:
• The LED will be ON to indicate the option is DISABLED.
• The LED will be OFF to indicate the option is ENABLED.
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8.2
Functional test cycle
The functional test cycle is a washing programme for use by service personnel only. It can be used
to test all the functions in a traditional washing cycle. In effect, a normal cycle is simulated.
8.2.1
Executing the test cycle
1. Access the diagnostic mode (see 6)
2. Close the door
3. Press the S3 button to set the cycle
LEDs LD1 and LD2 turn off; LD3 continues to flash; the LED for the phase in progress is lit
The display flashes the time to the end of the cycle
The programme is executed like a normal cycle. All pause and cancellation functions are available.
8.2.2
Phases in the test cycle
Phase
Duration
Water fill, Turbo enabled
30’’
Water fill
25’’
Pulse washing, dispenser
45’’
opens
Drain
dilution
Water fill
--Pulse washing
60’’
Drain
dilution
Water fill
--Controlled washing at 2800
RPM, heating to 60°C
Controlled washing at 2800
1200’’
RPM, temp. maintained at 60°C
temperature
time
Notes:
• The total duration of the cycle is about 50 minutes.
• The resins are washed at the beginning of the first programme executed after the test cycle.
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8.3
Pulse washing
Some programmes use a pulse washing (PW) system. The following procedure can be used to modify this
system by programming continuous washing «Ctrl» in all cycles where «PW» pulse washing is the default.
This modification also enhances washing action in delicate programmes.
1. Access the diagnostic mode (see 6).
2. Simultaneously press the S2 and S3 buttons until the LEDs LD1, LD2 and LD3 start to flash.
3. Press S2 button, the LEDs LD1 and LD3 switch off while LD2 continues to flash
The display indicates the function status: [ 0P ] continuous washing enabled, [ 1P ] pulse washing
enabled
4. Press the S2 button to toggle the function:
[ 0P ] continuous washing enabled “Ctrl”; [ 1P ] pulse washing enabled “PW”.
5. To store the new setting: Press the S0 button and shut off the appliance, or wait 60 seconds (the
appliance will automatically be set to the selection mode)
8.4
Exiting the diagnostic mode
1. To exit the diagnostic mode, press the S0 button to shut off the appliance
or:
2. wait 60 seconds: the appliance will automatically be set to the selection mode.
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9 ELECTRICAL FUNCTIONS
9.1
Circuit diagram
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9.2
9.2.1
Basic circuit diagram
Button to electrical diagrams
AR = Orange
BI = White
BL = Blue
CE = Light blue
GI-VE = Yellow-green
MA = Brown
SOI/TD - PR
NE = Black
RO = Pink
VI = Violet
AA/DA = Anti-flooding
device
CO = Capacitor
DD = Detergent/rinse-aid
dispenser
EC = Fill solenoid
ER = Regeneration
solenoid
GA = Interference filter
IP = Door switch
43
MR = Terminal block
MV = Fan motor
PL = Wash pump
PS = Drain pump
PU = Pushbutton array
PR/RL = Level pressure
switch
PA = Anti-overflow level
switch
RR = Heating element
SB = Rinse-aid sensor
SS = Salt sensor
Turbidity = Turbidity
sensor
ST = Temperature sensor
TAC/T = Tachometric
generator
TS = Safety thermostat
Main Board = Main circuit
board
User Interface = Display
board
599 35 94-03
Table of programmes
(∆T)
50°C
∆T
+2,5'
ctrl
(∆T)
50°C
∆T
+10'
(∆T)
68°C
---
ctrl
2x5’
(<68°C)
Y
---
∆T +6'
ctrl
Y Y Y Y Y
Y
---
∆T +6' PW1
Delicate without
prewash
Y Y Y Y Y
Y
---
---
---
(∆T)
50°C
N5
Normal 3 rinses
Y Y Y Y Y
Y
---
∆T +6'
ctrl
N6
Normal 3 rinses
without prewash
Y Y Y Y Y
Y
---
---
---
E1
Energy label Axx
Y Y Y Y Y Y Y
---
Y Y Y Y Y
N2
Normal (max speed)
Y Y Y Y Y
N3
Delicate
N4
Extra rinse
Bio detergent
“Tablet”
Eco drying
Intensive short
Half load
Sanitize
3 in 1
I3
E5
Energy label
Auto Performance
Aut
o
Auto 50-65°C
Q1
Short
Y Y Y Y Y
---
Q4
Soak
Y
---
Q5
Short 30 min.
Y Y Y Y Y
---
Q6
Dish heating
Q7
Crystal ware / glasses
Y Y Y Y Y Y Y
Y Y Y Y
Y
Y
Y Y Y
Y
-----
(∆T)
50°C
(∆T)
50°C
(∆T)
68°C
(∆T)
55°C
∆T
ctrl
+8'
∆T
PW1
+12'
∆T +2'
(∆T)
55°C
∆T
PW1
+12'
(∆T)
50°C
∆T +4'
(∆T)
68°C
∆T
+8'
ctrl
2x3’
(<65°C)
(∆T)
50°C
∆T +4'
(∆T)
68°C
∆T
+8'
ctrl
2x3’
(<65°C)
∆T
+47'
---
---
∆T +10' PW4 11’(<62°)
∆T +8'
∆T +8'
∆T +2'
-------
PW4 5’(<60°C)
∆T
+4’
2x
∆T
+3’
2x
∆T
+3’
---
---
---
---
---
---
---
---
ctrl
---
---
---
PW1 5’(<60°C)
85‘
---
PW1
(∆T) 69°C
---
ctrl
24‘
96‘
---
PW1
(∆T) 69°C ∆T +1’
PW
1
24‘
95‘
5’
(<60°C)
5’
PW1
(<60°C)
ctrl
PW1
5’
(<60°C)
---
PW1
(∆T) 69°C ∆T +1’
PW
1
24‘
86‘
ctrl
5’
(<60°C)
---
PW1
(∆T) 69°C
---
ctrl
24‘
99‘
ctrl
5’
(<60°C)
---
PW1
(∆T) 69°C
---
ctrl
24‘
90‘
PW1
---
∆T
+4’
PW4
10’
(<69°C)
---
PW
4
76‘
171‘
10’-11,5’
(<69°C)
∆T +2’
PW
1
64‘
150‘
PW
1
24‘
85‘110’
‘
48‘
‘
12‘
‘
31‘
‘
29‘
24‘
69‘
PW1
---
∆T
+4’
---
---
6‘
---
---
∆T +9'
ctrl
---
PW1
(∆T)
45°C
---
---
---
---
(∆T) 69°C
(∆T) 69°C ∆T +2’
---
---
PW1
PW1
---
---
---
---
---
---
5’
(<60°C)
(∆T) 69°C ∆T +1’
ctrl
---
ctrl
PW1
∆T
+8'
---
116’
---
(∆T)68°
C
---
24’
5’
(<60°C)
∆T +4'
---
ctrl
PW1
(∆T)
50°C
---
---
∆T
+4’
ctrl
---
(∆T) 69°C
∆T
+2’
---
---
PW1
---
---
---
---
PW1
∆T
+41'
---
5’
(<60°C)
---
11’-12,5’
(<65°C)
PW1 5’(<60°C)
ctrl
3x5s
Con
2800
PW1
(∆T)
50°C
∆T +8' PW1
--14’(<65°
----C)
---
∆T +4'
2x
∆T
+3’
2x
∆T
+5’
∆T
+4’
∆T
+4’
Cycle time (min.)
2x3’
(<65°C)
Drying (min.)
Wash time (min.)
ctrl
Type of washing
Type of washing
∆T
+14'
Wash time after
heating (min.)
Wash time after
heating (min.)
(∆T)
68°C
Y
Heating (ºC)
Heating (ºC)
∆T +5'
Y Y Y Y Y
Type of washing
Wash time after
heating (min.)
(∆T)
55°C
Intensive (max speed)
Dry.
Wash time after
heating (min.).)
Heating (ºC)
ctrl
I2
Hot
rinse
Wash time (min.)
Type of washing
∆T +10'
Abbreviation
(∆T)
55°C
Programme name
Extra
rinse
Rinse
Wash time after
heating (min.)
Wash
Heating (ºC)
Prewash
Type of washing
Options
Programmes
Wash time (min.)
9.3
PW1
-----
5’
(<60°C)
--5’
(<60°C)
---
---
---
---
---
---
PW1
3’
(<55°C)
∆T
+3’
PW1
--9’
(<69°C)
---
PW
1
---
---
ctrl
PW
(∆T) 69°C ∆T +2’
1
PW
(∆T) 55°C
--1
Notes: The total times for the programmes are approximate, only, and do not include extra rinses, which are optional. The regeneration/resin washing cycles are not
included in the various phases since these cycles are handled on an “as needed” basis and not necessarily performed in every programme (see 6.12 / 6.13) ctrl
Washing at continuous speed of 2800 RPM. PW Pulse washing 1600 > 2800 RPM.
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9.4
Checking components for proper operation
To make it easier to check components, a TEST PROCEDURE has been created which indicates the
points where the tester probes should be applied and the correct theoretical value for each
component.
Remove the door and disconnect all the connectors from the main board.
Connect the probes of the tester to the appropriate points on the connector. Compare the electric
resistance reading with the value shown on the table
Care should be taken with the position of connector "A1" - "A2": if this connector is connected
backwards, the appliance will not function because it will not receive power.
Measurement points on circuit board wiring connectors:
LIST OF COMPONENTS
PROBE CONTACTS
CORRECT VALUES
L
B1
0Ω
N
A2
0Ω
(RR) - HEATING ELEMENT +
(TS) - SAFETY THERMOSTAT
A1
C5
(PR) - LEVEL PRESSURE SWITCH
B1
C5
(PA) - ANTI-FLOODING PRESSURE
SWITCH
C1
A2
(IP) - DOOR MICROSWITCH
B2
D1
0Ω
(DD/DB) - INTEGRATED
DISPENSER
D5
D7
1500 Ω ± 8%
(SB) - RINSE-AID SENSOR
F3
F4
* POWER CABLE &
(PU) - ON/OFF SWITCH
(SS) - SALT SENSOR
F1
with ON/OFF button
pressed
25 Ω ± 8%
connected in series
(2100W)
INFINITE
0Ω
INFINITE
0Ω
on EMPTY (1-2)
on FULL (1-3)
on EMPTY (1-2)
on FULL (1-3)
INFINITE
0Ω
INFINITE
F2
NOTES
0Ω
Door closed
OK
with Rinse-aid
without Rinse-aid
with salt
without salt
4850 Ω ± 5%
(at 25ºC)
1205 Ω ± 5%
(at 65ºC)
(ST) - TEMPERATURE SENSOR
G5
G6
(GT) - TACHOMETRIC SENSOR
E1
E2
210 Ω ± 8%
OK
(MV) - FAN MOTOR
C11
D3
7750 Ω ± 8%
OK
(ER) - REGENERATION SOLENOID
C11
C9
6K Ω ± 8%
OK
(EC) - FILL SOLENOID +
(AA) - ANTI-FLOODING DEVICE
C11
C7
3800 Ω ± 8%
(PL) - WASH MOTOR
(PS) - DRAIN MOTOR
C11 C3
To the 2 motor wires
(blue/red)
C11
C1
connected in series
50 Ω ± 8%
start winding
180 Ω ± 8%
auxiliary winding
180 Ω ± 8%
OK
Note: - * = Measurement points L and N refer to the pins on the plug fitted to the power cable.
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10 A QUICK GUIDE TO SPECIAL FUNCTIONS
The table below contains a brief description of the functions available to the user and to service personnel.
Function
USER (*)
Regeneration
level
Rinse-aid
dispensing on/off
Method of selection
Buttons
LED(s)
S0 (On/Off)
[S2 + S3]
S0 (On/Off)
[S2 + S3]
S0 (On/Off)
Buzzer on/off
[S2 + S3]
Display of alarms [S1 + S3]
and components
diagnostic
SERVICE
Cancellation of
alarms in
memory
S0 (On/Off)
[S1 + S3]
S0 (On/Off)
[S1 + S3]
Test cycle
S0 (On/Off)
[S1 + S3]
Extra rinse
S0 (On/Off)
Disabling of
pulse washing
[S1 + S3]
S0 (On/Off)
Method of activation
Buttons
Display
LD1 + LD2+ LD3
S1
flashing
LD1 flashes
LD1 + LD2+ LD3
S2
flashing
LD2 flashes
1L ..... 10L
0d / 1d
Short description / Comments
(description on page 37 / section 7.2). When button S1 is pressed
repeatedly:
Liv….[1L]……[2L]….[3L]…...[ 4L]……[ 5L]…. [ 6L ]…...[ 7L] .…[ 8L]……[ 9L]….…[10L]
°F… >8 ….. >14 ..…>20 ….. >30 ….. >40 ….. >50 ….. >60 ….. >70 ….. >80 ….... >90
°D… >4 …... >8 ..…. >11 ..... >17 ….. >22 ….. >28 ….. >33 ….. >39 ….. >45 ……. >50
(description on page 38/ section 7.3)
Pressing button S2 toggles function : 1d = rinse-aid enabled, 0d = disabled
(description on page 36 / section 7.1)
LD1 + LD2+ LD3
S3
flashing
LD3 flashes
LD1 + LD2 + LD3
S1
i.0 / 4......10
flashing
LD1 flashes
flashing
[i.0]
AL 1
S2
[ 188 ]
(description on page 36 / section 6.3)
All LEDs and digits flash for 30 sec.
LD1 + LD2 + LD3
S3
flashing
LD3 flashes
[ 50 ]
Time to end of
cycle
(description on page 40 / section 8.2)
The cycle starts automatically
0A / 1 A
(description on page 39 / section 8.1)
LD1 + LD2 + LD3
flashing
0b / 1b
[S1 + S2]
LD1 + LD2 + LD3
flashing
flashing
S1
Pressing button S3 toggles function: 1b = buzzer enabled, 0b = disabled
(description on page 33/ section 6).
When button S1 is pressed repeatedly:
[i.0]
AL2
[i.0]
AL 3
[4 ]
ER
[ 5]
PS
[ 6]
EV
[7]
RR
[ 8]
PL
[9]
DD
[10]
MV
Pressing button S1 toggles function: 1A = extra rinse enabled 0A = disabled
LD1 flashes
[S2 + S3]
LD1 + LD2 + LD3
flashing
0P / 1P
S2
flashing
LD2 flashes
(description on page 41 / section 8.3)
Pressing button S2 toggles function: 1P = Pulse washing PW enabled;
0P = Continuous washing
Exit / storage in To store programmed functions or exit from the diagnostic mode, turn off the unit using the S0 (On/Off) button. In most cases, the programming is stored or the
memory
diagnostic mode is exited automatically after 60 seconds (in this case, the machine sets itself to the pre-selection mode).
(*) No “user” functions are available if a cycle has been selected (the appliance must be in the pre-selection mode).
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