Kuppersbusch EDW 1503 User manual

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Service Manual: H7-74-03D
Responsible: Dieter Rutz KÜPPERSBUSCH HAUSGERÄTE AG
Email: [e-mail]
Tel.: [phone] Kundendienst
Fax: [phone] Postfach 100 132
Date: 30.09.2010
Product identification
Code for the production numbers used for the various models (PNC)
First 3 figures
Product line DISHWASHER 911 xxx xxx
4th figure
Group DIVA 45 cm 9 place settings 6 911 6x x xxx
DIVA 60 cm 12 place settings 9 911 9x x xxx
5th figure
Structure
F.S. (45/60) 1911X 1x xxx
B.I. (45/60) 2911X 2x xxx
F.I. (45/60) 3911X 3x xxx
F.S./B.I.(B.U.) convertible
(45/60) 4911X 4x xxx
F.S. “BIG 60” 6911X 6x xxx
B.I. “BIG 60” 7911X 7x xxx
F.I. “BIG 60” 8911X 8x xxx
6th figure
Key typology &
electro-mechanical function
1 key 19119 X 1xxx
2 keys 29119 X 2xxx
3 keys 39119 X 3xxx
4 keys / + keys 49119 X 4xxx
Electronic function
EDW 1001-1100/ 1003 59119 X 5xxx
EDW 1500 / 1503 69119 X 6xxx
EDW 2000 / 2003 79119 X 7xxx
EDW 2500 / 2503 89119 X 8xxx
EDW 500 / 503 99119 X 9xxx
Last 3 figures
Product identification (customer/market) XXX 911 9 X X XXX
Example DIVA
electronic
F.S. EDW1001-1100 911 9 1 5 xxx
B.I. EDW1001-1100 911 9 2 5 xxx
F.I. EDW1003 911 9 3 5 xxx
B.U. EDW1001-1100 911 9 4 5 xxx
F.S. EDW1500 911 9 1 6 xxx
B.I. EDW1500 911 9 2 6 xxx
F.I. EDW1503 911 9 3 6 xxx
B.U. EDW1500 911 9 4 6 xxx
F.S. EDW2000 911 9 1 7 xxx
B.I. EDW2000 911 9 2 7 xxx
F.I. EDW2003 911 9 3 7 xxx
F.S. EDW2500 911 9 1 8 xxx
B.I. EDW2500 911 9 2 8 xxx
F.I. EDW2503 911 9 3 8 xxx
F.S. EDW500 911 9 1 9 xxx
B.I. EDW500 911 9 2 9 xxx
F.I. EDW503 911 9 3 9 xxx
B.U. EDW500 911 9 4 9 xxx
F.S. - Free-standing
B. I. - Partially integrated
F. I. - Fully integrated

DIVA Service Manual - EDW 1503 3
For internal use only
Contents
1. General ............................................................................................................................ 5
1.1 Purpose of this service manual ............................................................................. 5
1.2 Notes ..................................................................................................................... 5
1.3 General features.................................................................................................... 6
2. Control panel .................................................................................................................. 7
2.1 Control panel ......................................................................................................... 7
2.1.1 ON/OFF button (S0).................................................................................. 7
2.1.2 Programme/Option buttons (S1-S6).......................................................... 7
2.1.3 Indicator LEDs (LD10 - LD12)................................................................... 8
2.1.4 Display ...................................................................................................... 8
2.2 Options .................................................................................................................. 9
2.2.1 “3 in 1 tablets” ........................................................................................... 9
2.2.2 Extra rinse (rinse +)................................................................................... 9
2.2.3 “1/2 load”................................................................................................... 9
2.2.4 “Sanitize” ................................................................................................... 9
2.2.5 Delayed start ........................................................................................... 10
2.3 Washing programmes ......................................................................................... 11
2.4 Modifying a programme....................................................................................... 12
2.4.1 Cancelling a programme (reset).............................................................. 12
2.4.2 Modifying a programme .......................................................................... 12
2.4.3 Interruption of a programme (pause) ...................................................... 12
2.5 Power failure ....................................................................................................... 13
2.6 Buzzer (only certain models)............................................................................... 13
2.6.1 Activating/disactivating the buzzer .......................................................... 13
2.7 Sequence of operations ...................................................................................... 14
3. Structural characteristics ............................................................................................ 15
3.1 Structure.............................................................................................................. 15
3.2 Hydraulic and functional characteristics .............................................................. 15
3.3 Hydraulic circuit ................................................................................................... 16
4. Electrical components and their functions................................................................ 17
4.0.1 EDW 1503 Electronic control system...................................................... 17
4.0.2 Functions of the circuit board .................................................................. 17
4.0.3 Memory in the control system ................................................................. 18
4.1 Specifications for actuators and sensors............................................................. 18
4.1.1 Components............................................................................................ 18
4.1.2 Sensors ................................................................................................... 18
4.1.3 NTC Temperature sensor ....................................................................... 19
4.2 Power supply and programme selection ............................................................. 19
4.2.1 “Beam on floor” function (certain models only) ....................................... 20
4.3 Fill circuit ............................................................................................................. 20
4.3.1 Level and anti-overflow pressure switch ................................................. 20
4.3.2 Fill system ............................................................................................... 21
4.3.3 Anti-flooding device................................................................................. 21
4.3.4 Intervention of the anti-overflow device................................................... 21
4.4 Control of water fill phase.................................................................................... 22
4.4.1 Static fill................................................................................................... 22
4.4.2 Dynamic fill.............................................................................................. 22
4.4.3 Level stability control............................................................................... 22

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4.5 Water fill time....................................................................................................... 22
4.5.1 Static fill time ........................................................................................... 22
4.5.2 Dynamic fill time ...................................................................................... 23
4.5.3 Power failure during water fill phase .......................................................23
4.6 Control of stability during the washing phase ...................................................... 23
4.7 Washing system .................................................................................................. 24
4.7.1 Control of the washing pump................................................................... 24
4.8 Heating ................................................................................................................ 25
4.8.1 Integrated detergent dispenser ...............................................................25
4.9 Disactivating the rinse-aid function......................................................................26
4.9.1 Drain........................................................................................................27
4.10 Regeneration system...........................................................................................27
4.11 Resin washing .....................................................................................................28
4.12 Regeneration levels............................................................................................. 28
4.12.1 Setting the regeneration level.................................................................. 28
4.12.2 “Blending” function ..................................................................................29
4.12.3 Table of regeneration values................................................................... 30
5. Drying ............................................................................................................................ 31
6. Automatic cycle ............................................................................................................ 32
6.1 Turbidity sensor ................................................................................................... 32
6.1.1 Calculating the degree of soiling .............................................................32
6.1.2 Determination of the load ........................................................................ 32
6.2 Automatic cycle ................................................................................................... 33
7. Alarms............................................................................................................................ 34
7.1 Table of alarms.................................................................................................... 34
8. Diagnostics mode / Options ........................................................................................36
8.1 Accessing diagnostics mode ...............................................................................36
8.2 Reading the alarms and activating the individual components............................ 36
8.3 Cancelling alarm codes from memory / Testing the LEDs .................................. 37
8.4 Functional testing cycle .......................................................................................38
8.4.1 Selecting the cycle .................................................................................. 38
8.4.2 Programme phases................................................................................. 38
8.5 Options available to Service Engineers...............................................................39
8.5.1 Selecting the extra cold rinse option .......................................................39
8.5.2 Disabling pulse washing.......................................................................... 40
8.6 Exiting diagnostics mode..................................................................................... 40
9. Electrical functions: ..................................................................................................... 41
9.1 Circuit diagram ....................................................................................................41
9.2 Basic circuit diagram ...........................................................................................42
9.2.1 Key to the circuit diagram........................................................................43
9.3 Table of programmes ..........................................................................................44
9.4 Checking the efficiency of the components ......................................................... 45
9.5 Measurement points on the board wiring connector
and the correct theoretical values........................................................................46
10. Quick guide to the special functions .......................................................................... 47

DIVA Service Manual - EDW 1503 5
For internal use only
1. General
1.1 Purpose of this service manual
The purpose of this Service Manual is to provide Service Engineers, who already have the basic
knowledge necessary to repair household dishwashers, with technical information regarding the specific
functionalities featured in the new “EDW 1503” range of electronically-controlled dishwashers.
The EDW 1503 control system consists of a main circuit board and a control/display board. Both boards
are housed in a single plastic container.
This system is used in fully-integrated versions with “DIVA” 60 cm structures.
This manual covers:
• General characteristics
• Control panel and programmes
• Technical characteristics
• Guide to diagnostics
For more detailed information regarding the hydraulic circuits and the structural characteristics of the
appliances, refer to the Service Manual for presentation of the “DIVA” structure (H7-74-03 - Basic
features).
1.2 Notes
• Work on electrical appliances may only be carried out by suitably qualified
staff!
• Always disconnect the mains plug before touching components inside the
appliance.

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1.3 General features
Mains voltage 230V / 50Hz (limits 187-254 V)
Total power absorption 2300W
Water connection Water supply min./max. pressure 5-80N/cm²
Filling capacity 12 place settings
Dimensions:
- Width
- Height
- Depth



59.6 cm
81.8 - 87.8 cm
55.5 cm
Control elements
- ON/OFF
- Programme selection / optional functions



Horizontal / Vertical
Two-pole switch (separate from the electronic board)
Button-actioned (min. 3, max. 6)
Display 2.5 digits and LEDs
Washing system Combined / pulse
Water fill level Pressure switch control + software
Water heating Tube-enclosed heating element (2100 W)
Temperature control NTC Temperature sensor
Drying system Active / Turbo
Safety features / alarms Total protection (hydraulic + software)

DIVA Service Manual - EDW 1503 7
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2. Control panel
2.1 Control panel
The configuration of the control panel depends on the following:
- Number of programme selection buttons (from a minimum of 3 to a maximum of 6)
- Number of LEDs (max. 9)
2.1.1 ON/OFF button (S0)
The ON/OFF button is featured on all models in the range, and is used to switch the appliance on and
off. Switching off does not cancel the programme being executed.
2.1.2 Programme/Option buttons (S1-S6)
The functions of the various buttons depend exclusively on the software configuration of each appliance,
which can feature from 3 to 6 buttons. Also the selection of the washing programmes changes according
to the configuration of each appliance.
The buttons S1, S2, S3 are always featured because perform special functions.
Models with direct selection
To each button corresponds a specific programme:
1. Close the door and switch the appliance on [S0].
All programme LEDs light to indicate the selection phase (except 3/1, if disabled).
2. Press a button to select a programme.
- The corresponding LED lights.
- The display shows the flashing time-to-end.
- The indicator LEDs of the phase of the cycle light.
3. Within 3 seconds after the programme selection it is possible to set the eventual option or the
delayed start (if available).
4. Close the door to start the cycle. The digits light steady.

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Models with sequential selection
In these versions two buttons are used to select the programmes:
1. Close the door and switch the appliance on [S0]. The display shows [ --].
2. Press button [+–>] to select with an increasing order:
- The LEDs relative to the programme buttons light (if featured).
- The display shows the last selected flashing programme. Every time the button is pressed the
following programme is selected (increasingly): –> 1 –> 2 –> 3.....
3. Press button [- <–] to select with a decreasing order:
- The LEDs relative to the programme buttons light (if featured).
- The display shows the last selected flashing programme. Every time the button is pressed the
previous programme is selected: –> 7 –> 6 –> 5 .....
4. Within 3 seconds after the programme selection it is possible to set the possible option or the
delayed start (if available).
5. Close the door to start the cycle. The digits light steady.
2.1.3 Indicator LEDs (LD10 - LD12)
The functionalities of the LEDs depend on the configuration software of each appliance.
2.1.4 Display
The display, which consists of 2.5 digits, can indicate:
- The indicative time-to-end of the programme in minutes. The countdown is carried out every minute
and updated at the end of each programme phase.
- The end of cycle [0].
- The possible delayed start time in hours (max 19h); the time decreases every hour.
- The selected regeneration level (during the regulation).
- A possible alarm code in case of failure.
- The condition of the special functions (no rinse-aid and buzzer).
Salt: indicates that the salt reservoir is empty. If the level of regeneration is set to “1” (no regeneration),
this LED remains unlit at all times.
Rinse-aid: indicates that the rinse-aid reservoir is empty.
End of cycle: lights when the programmes ended.

DIVA Service Manual - EDW 1503 9
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2.2 Options
2.2.1 “3 in 1 tablets”
This option can be selected by pressing the corresponding button, and remains in memory until the same
button is pressed again. This option modifies the phases of the programme in order to optimize
performance when “3 in 1” detergent tablets are used:
- variation of the duration of the programme and the temperatures required to dissolve the detergent
tablets
- reduction of water exchange (partial drain phases)
- exclusion of introduction of rinse-aid
- exclusion of regeneration / resin washing
2.2.2 Extra rinse (rinse +)
This option may be selected temporarily by pressing the button (if featured), or in “Service” mode. If this
option is set by the service engineer, it remains in memory until disactivated (see relative section).
This option adds one cold rinse (with pulse washing) with a duration of about 5 minutes.
2.2.3 “1/2 load”
The 1/2 load option optimizes the washing cycle when only a small load is placed in the appliance.
2.2.3.1 1/2 load button
When this button is pressed, certain parameters of the selected washing cycle are modified:
- Exclusion of Pre-wash (if featured)
- Reduction of the washing temperature
- Reduction of the duration of the programme (up to 36 minutes)
2.2.3.2 Automatic 1/2 load
When this button is not featured on the control panel, certain programmes may feature automatic
detection of the half load. This system measures variations in the temperature during the initial heating
phase. The temperature and the duration of the wash are both reduced.
This option is not available in the following cycles: “Intensive”, “Short 30 minutes”, “Soak”, “Heating
plates” and “Glassware”.
2.2.4 “Sanitize”
This is a special option used to sanitize the dishes/cutlery. However, it is NOT compatible with the
“Glassware” programme.
- During the final rinse, the temperature is maintained at 68°C for 10 minutes.
- If used together with the SOAK option, the system performs a special sanitizing programme which
lasts approximately 46 minutes (1 hot rinse followed by 10 minutes at a constant temperature of
68°C).

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2.2.5 Delayed start
Proceed as follows to select the delayed-start time:
1. Press key S0 to switch on the appliance.
2. Press the button repeatedly to select the delayed-start time which appears flashing on the display.
The time increases every hour up to 19h (1 -> 2 -> 3 -> ... 19).
3. Select the programme and the possible options. For some seconds the display shows the time-to-
end of the cycle, then the delay time.
4. Close the door to activate the delay time:
The display lights steady and the countdown starts: 19 -> 18 -> 17 -> ... 0 hours.
5. During the countdown, till the programme starts, it is possible to modify the delay time or cancel it.
6. On expiry of the delay time the programme starts automatically.
The display shows the time-to-end of the cycle.
The delayed-start countdown can also be selected as follows:
1. Press key S0 to switch on the appliance.
2. Select the programme and the possible options.
3. Within 3 seconds, press sequentially the button to select the delay time.
4. Close the door to activate the delay time.

DIVA Service Manual - EDW 1503 11
2.3 Washing programmes
The number and type of washing programmes depends on the configuration of the appliance (max. 6).
(*) models with turbidity meter only
Ty pe Programme Pre-wash (°C) Washing (°C) Number of
rinses 1/2 load Sanitize Elapsed time in min.
I1 Intensive 1 55 68 3 X X 122
I2 Intensive
(maximum speed) 55 68 3 X X 120
I3 Intensive (short) 50 68 3 X X 88
N1 Normal cold 68 2 X X 102
N2 Normal
(maximum speed) cold 68 2 X X 100
N5 Normal (3 rinses) cold 55 3 X X 102
N3 Delicate cold 55 2 X X 98
E1 Energy label Axx cold 50 2 X X 162
E4 Energy label short cold 55 2 X X 134
E5 Energy label
Auto performance (*) cold 65 max. 2 X X 141
Auto 1 Automatic 50-65 (*) (cold) 50-68 2-3 Auto X 92-115
Q4 Soaking cold — (1) — X 12 (46)
Q5 Short 30 min — 65 max. 1 — X 31
Q6 Heating plates — — 1 — X 30
Q7 Glassware — 45. 2 — — 73

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2.4 Modifying a programme
2.4.1 Cancelling a programme (reset)
To cancel a programme that has already started, proceed as follows:
1. Open the door carefully and press buttons S2 - S3 together for approximately 2 seconds: the LED
corresponding to the cycle being executed begins to flash.
2. After about two seconds the display switches off: the programme is now cancelled and the
appliance returns to the selection mode.
2.4.2 Modifying a programme
Until a cycle has actually started (digit with flashing light), the settings selected can be modified at any
time by pressing the appropriate buttons.
To modify a programme that has already started, first cancel it (see corresponding paragraph) and then
perform the new selections, or:
1. Carefully open the door and press the button corresponding to the new programme for about
6 seconds: the LED for the current cycle begins to flash.
2. After about 6 seconds, the LED corresponding to the old programme switches off, and the LED for
the new programme lights. Any options that have been selected are cancelled, and must therefore
be entered again.
2.4.3 Interruption of a programme (pause)
Proceed as follows to interrupt a programme that has already started:
1. Carefully open the door and press S0 to switch the appliance off.
2. To re-start the cycle, press S0 again and close the door. The programme starts (after a brief delay)
from the point at which it was interrupted.
Caution! If the appliance is switched off or if the door is opened for more than 30 seconds
during the drying phase, the cycle is considered to have been terminated after the
regeneration phase; when the appliance is switched on again, it returns to
programme selection mode.

DIVA Service Manual - EDW 1503 13
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2.5 Power failure
The power failure function maintains the information relative to the cycle status even in the even of a
power outage; when the power supply is restored, the cycle resumes from the point at which it was
interrupted.
If the power failure occurs during the drying phase, the cycle is considered to have been terminated after
the regeneration phase.
2.6 Buzzer (only certain models)
The buzzer sounds to indicate the end of cycle and in the event of an alarm condition.
The buzzer sounds three times at the end of the cycle, but switches off immediately if the door is opened.
If the user prefers to switch off the buzzer, it is necessary to press a combination of buttons.
2.6.1 Activating/disactivating the buzzer
1. Cancel any cycles that have been selected.
2. Press key S0 to switch on the appliance.
3. Press buttons S2 and S3 simultaneously until LEDs LD1, LD2 and LD3 begin to flash.
4. Press button S3: LEDs LD1 and LD2 switch off, while LD3 continues to flash.
The condition of the buzzer is indicated by the display:
1b buzzer on
0b buzzer off
5. Press button S3 again to disactivate the buzzer.
6. To store this operation in memory: press button S0 and switch the appliance off; alternatively, wait
for 60 seconds. The appliance is in the selection mode.

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2.7 Sequence of operations
Selecting the cycle
1. Open the door to access the control panel.
2. Press S0 to switch the appliance on. The
LED L0 lights.
3. Press the button corresponding to the
desired programme.
The display shows the time-to-end or the
programme number flashing.
4. Within 3 seconds select the possible delayed
start or the desired option (if featured).
Start
5. Close the door to start the cycle. The digits
light steady.
Execution of the cycle
6. The time-to-end decreases every minute and
is updated after every cycle phase.
7. Proceed as follows to interrupt a programme
that has already started:
1. Open the door and press S0 to switch off
the appliance.
2. To re-start the appliance, press S0 again
and re-close the door.
8. To cancel the current programme:
Open the door and press buttons S2 and S3
at the same time, holding down for about
2 seconds.
End of programme
9. At the end of the programme:
The buzzer sounds at intervals.
The END OF CYCLE LED lights.
The display will indicate “0”.
10. Press S0 to switch off the appliance.

DIVA Service Manual - EDW 1503 15
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3. Structural characteristics
3.1 Structure
The appliance consists of four main assemblies:
- base
- door
-tub
- hydraulic system
These four assemblies are enclosed in a cabinet designed with the following removable parts:
- a lower front panel (secured by two screws),
- two lateral panels (secured by six screws).
3.2 Hydraulic and functional characteristics
Turbo fan
Drying duct
Counterweight
Base
Water
Sump Drain pump
Water fill tank and condenser
Heating element
Washing pump
softening
system

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3.3 Hydraulic circuit
Legend
1 - Fill hose 11 - Anti-overflow pressure switch
2 - Fill hose with Aqua Stop 12 - Sump assembly
3 - Fill solenoid valve 13 - Washing pump
4 - Regeneration solenoid valve 14 - Tube-enclosed heating element
5 - Air-Break 15 - Drain pump
6 - Steam condenser 16 - Non-return valve
7 - Regeneration chamber 17 - Drain hose
8 - Salt reservoir 18 - Drying duct / Fan
9 - Resin reservoir 19 - Anti-flooding device
10 - Level pressure switch

DIVA Service Manual - EDW 1503 17
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4. Electrical components and their functions
4.0.1 EDW 1503 Electronic control system
The EDW 1503 control system consists of a main circuit board and a control/display board. Both boards
are housed in a single plastic container.
4.0.2 Functions of the circuit board
The circuit board:
- receives signals relative to the cycle settings via the control/display board. The buttons and LEDs
are also mounted on this board.
- powers all the electrical components (solenoid valves, washing pump, detergent/rinseaid dispenser,
drain pump, heating element, fan motor).
- controls the temperature of the washing water via an NTC sensor
- monitors the status of the pressure switch and the rinse-aid/salt sensors.

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4.0.3 Memory in the control system
The main circuit board features an EEPROM memory (external to the microprocessor) which stores in
memory data relative to the configuration, description of the cycle, cycle status in case of a power failure,
and any alarm conditions. The configuration data (entered in the factory using a computer with a DAAS
interface) determine the functionalities of the appliance (number and type of programmes, options, LEDs
etc.).
4.1 Specifications for actuators and sensors
4.1.1 Components
4.1.2 Sensors
Type of component Power available Type of electronic control
Wash pump motor Max. 250W Triac
Drain pump motor Max. 100W Triac
Heating element Max. 2100W Relay
Water fill solenoid valve Max. 10W Triac
Regeneration solenoid valve Max. 10W Triac
Detergent and rinse-aid solenoid
valve Max. 10W Triac
Fan motor Max. 10W Triac
Sensor Type of electronic signal Type of component
Salt sensor Digital 5 Volt Reed
Rinse-aid sensor Digital 5 Volt Reed
Temperature sensor Analogue 5 Volt NTC
Turbidity sensor
(certain models only) Analogue (max. 12 Volt) Opto-electronic
Tachymetric sensor Frequency Tachymetric generator
Level sensor Digital high voltage Pressure switch
Door closure sensor Digital high voltage Switch
Anti-flooding sensor Digital high voltage Switch

DIVA Service Manual - EDW 1503 19
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4.1.3 NTC Temperature sensor
4.2 Power supply and programme selection
The main board is powered by the
closure of contacts 1-5 and 2-4 of the ON/
OFF button (PU). The connectors used in
this case are A2 (neutral) and B1 (line).
The control/display board (user interface)
is powered at 5V by the main board,
making programme selection possible.
When the door is closed, the main board
detects the closure of the contacts of the
switch (IP) across connectors B2-D1,
and starts the washing programme. The
same switch powers the electrical
components.
When the door is opened, the power
loads are disconnected from the power
supply and the cycle is paused.
NTC Table of comparative values
Temperature °C Nominal value Ω
10 9655
25 4850
60 1205
90 445

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4.2.1 “Beam on floor” function (certain models only)
Certain models feature a special device
(beamer) installed between the door and
the inner door and connected to
terminals E6, E4 and E3 on the circuit
board. This device projects a beam of red
light onto the floor and operates in the
same way as the end-of-cycle LED:
- The beam remains lit when the end of
the cycle has been reached.
- The beam lights intermittently to
signal an alarm condition.
4.3 Fill circuit
4.3.1 Level and anti-overflow pressure switch
- The level of water introduced into the appliance is
determined by the level pressure switch (A).
- The anti-overflow pressure switch (B) ensures that the level
of water does not exceed the safety threshold (causing
overflow from the door).
A
B