Asko DW20.1 User manual

Service manual
Dishwasher
Type: DW20.1, DW20.2, DW20.3, DW20.4
Asko Cylinda AB/After Sales
Box 344
SE-532 24 Skara
Sweden

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Contents
1. Introduction .............................................................................................................. 5
2. Technical data ........................................................................................................... 7
2.1 Technical information ....................................................................................... 7
2.2 Components and measured values ................................................................... 8
2.3 Connection diagram....................................................................................... 10
2.4 Functional description of components ............................................................. 11
3. Installation.............................................................................................................. 14
4. Settings................................................................................................................... 18
4.1 Programme .................................................................................................... 18
4.2 Time display................................................................................................... 18
4.3 Options.......................................................................................................... 19
5. Service menu.......................................................................................................... 27
5.1 Activation of service menu ............................................................................. 27
5.2 Programme flow description .......................................................................... 29
6. Troubleshooting ...................................................................................................... 31
6.1 Most common faults ....................................................................................... 31
6.2 Fault indication .............................................................................................. 33
6.3 Fault codes..................................................................................................... 34
7. Tools....................................................................................................................... 35
7.1 Tools .............................................................................................................. 35
7.2 Special tools................................................................................................... 35
Register ...................................................................................................................... 36

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1. Introduction
In your hand you are holding ASKO’s Service Manual for the new generation of dishwashers.
The dishwashers in the DW20 range are available in four different basic models with the type designations
DW20.1, DW20.2, DW20.3 and DW20.4. Presented on the following page are the different panels
available for each type, which lets you readily identify the machine type. The different variants have
different designations from market to market. The type designation is most important when you need to
identify a particular type of machine.
You can find this on the machine rating plate positioned on the right-hand side of the inner part of the door.
It must be easy to carry out servicing on dishwashers. It is important for you, as a service technician, to
benefit from the conditions necessary to enable you to work in an effective and satisfactory fashion. We
hope that this Service Manual will be a useful tool in your daily work.
Asko Cylinda AB/After Sales
Box 344
SE-532 24 Skara
Sweden
INTRODUCTIONINTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
Type designation Item number
Serial number
Year Week

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DW20.3
The buttons are on the top side of the control unit in the DW20.3. The unit has six set programmes and is
available in two models - with three or five options.
DW20.2
DW20.2 is a control unit with a large display on the front of the panel. It has six set programmes and none
or three or five options.
DW20.4
DW20.4 is a control unit with ten set programmes, a number of different options and with a single display
(LCD) on the top side of the panel.
DW20.1
DW20.1 is available in two variants, either with none or with two options. Both have four set programmes
and operating controls on the front of the panel.
INTRODUCTIONINTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
The DW20.3 and DW20.4 control units are used both for fully integrated and standard models. The other
control units are used only on standard models.

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2.1 Technical information
Height: 820 - 870 mm (860 - 870 mm)
Width: 596 mm
Depth: 550 mm
Weight: 42 kg/45 kg with water softener
Capacity*: 12 place settings
Water pressure: 0.03–1.0 MPa (0.3–10 kp/cm2)
Connection: 1-phase, 230 V, 50 Hz 10 A**
Max connection power: 1 900 W**
*According to standard EN 50242
**See rating plate
2. Technical data
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TECHNICAL DATECHNICAL DA
TECHNICAL DATECHNICAL DA
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2.2 Components and measured values
Indicated resistance values apply at room temperature (ca. 20°C/68°F)
Values within ±10% are regarded as normal
Item No. Component Measured value Position
8073779 Radiointerference suppressionfilter 680 kohm
8073780,81 Radiointerference suppressionfilter 1 Mohm
8073784 Heatingelement 1800W230V 30ohm
8073785 Heatingelement 1400W120V 12ohm
8073788 Thermistor 25 kohm
8073801,02 Combineddispenser 230V 1.3 kohm
8073803,04 Combineddispenser 120V 0.3 kohm
8073811 Circulationpump 200-240V50 HZ 90ohm
8073812 Circulationpump 200-220V60 HZ 56ohm
8073813 Circulationpump 120V60HZ 22ohm
8073816 Drain pump 200-240V 50 HZ, 16 l/m 150ohm
8073817 Drain pump 200-220V 60 HZ, 16 l/m 85 ohm
8073818 Drain pump 120V 60 HZ, 16 l/m 25ohm
8073821 Spray arm divider 200-240V 50/60 HZ 8,5 kohm 2-3
8073822 Spray arm divider 120V 60 HZ 2.6 kohm 2-3
8073824 Inlet valve single incl. flow sensor 200-240 V, 4 l/m 3.8 kohm coil
8073825 Inlet valve single incl.flow sensor 120V, 4 l/m 0.95kohm ”
8073826 Inlet valve safety incl.flow sensor 200-240 V, 4 l/m 2 kohm ”
8073827 Inlet valve safety incl. flow sensor 120 V, 4 l/m 0.5 kohm ”
8074337 Inlet valve water soft incl.flow sensor 200-240 V, 4 l/m 3.8 kohm ”
8074338 Inlet valve water softener incl.flow sensor 120 V, 4 l/m 0.95 kohm ”
8073830 Halogenlamp 5W/12V <10 kohm
8052778 Wax motor 1.1 kohm
8073847 Fan motor 230V 0.75kohm
8073848 Fan motor 120V 0.18kohm

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Item No. Component
8801222 Controlunit Compl.,DW20.1 EU, Asia, etc.
8801223 Controlunit Compl.,DW20.1 AU
8801224 Controlunit Compl.,DW20.1 USA
8801225 Controlunit Compl.,DW20.2 EU
8801226 Controlunit Compl.,DW20.2 AU
8801227 Controlunit Compl.,DW20.2 USA
8801228 Controlunit Compl.,DW20.3 EU
8801229 Controlunit Compl.,DW20.3 AU
8801230 Controlunit Compl.,DW20.3 USA
8801231 Controlunit Compl.,DW20.4 EU
8801232 Controlunit Compl.,DW20.4 AU
8801233 Controlunit Compl.,DW20.4 USA
TECHNICAL DATECHNICAL DA
TECHNICAL DATECHNICAL DA
TECHNICAL DATT
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2.3 Connection diagram
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TECHNICAL DATT
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Rev ind Revision AppdYear Week
87 65 432 1FORMAT A3
5
6
7
8
E
D
A
B
1
C
F
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This document must not be copied without
our written pemission, and the contents
thereof must not be imparted to a third party
nor be used for any unauthorized purpose.
Contravention will be prosecuted.
Asko Cylinda AB
4
Dim ensions,Type, etc.
Pos.
Material
Name of item
Qty
Dens.Kg /dm3
Part No. Material
ASKOCYLINDA
Description(ENG)
Gen.tolerance
Scale
Description(SE )
Replace
Gen.tol.A ngle
Re v Ind
Designed by
Project
Week
YearIssbyDept
Released by
1:1
ML
UD 00 41
KOPPLINGSSCHEMA DW20.1, .2, .3, .4, .C
CIRCUIT DIAGRAM DW20.1, .2, .3, .4, .C
80 738 09 00
S:\U\Dw20\1_Tryckunderlag\Kopplingsschema\8073809 Circuit diagram DW20.4_c.dft , mall , 2002-06-18 08:34:08
E
D
A
B
C
F
AP
FL
F
LU
EL
CP IV
VAX
TB
KD
VMG
LB
CP
DIV
SV
SG TS
1 2 3
GS
FG
BB
NTC
M
NET: INTERFACE TO HOME NET COMMUNICATION UNIT
FM
L
N
VMG: RINSE AID SENSOR
IV: INLET VALVE
LU: DOOR
SG: SALT SENSOR
VAX: VAX ACTUATOR
FL: FAN
LB: DOOR SWITCH
TB: MAIN SWITCH
F: FILTER
BB: ILLUM. SWITCH
CP: CIRCULATION PUMP
KD: COMBI DISPENSER
EL: HEATING ELEMENT
AP: DRAIN PUMP
DIV: WATER DIVERTER VALVE
FG: HUMIDITY SENSOR
GS: TURBIDITY SENSOR
NTC: THERMISTOR
SV: SALT VALVE
TS: PRESSURE SENSOR
BE: HALOGEN LAMP
WIRES IN ALL MACHINES
INTERNAL CONNECTION WIRES IN SOME MACHINES
BE
1/C
2
FM: FLOW METER
NET
EL
123456 78
9
10
AP VMGLB KD FL VAX CPIV SV SG DIV BE GS TS FM NTC
FG
EL
TB
1/C
3/4
2
ÖB: FLOAT SWITCH
ÖB
1/C
3/4