Asko D1976 Manuale utente
Model D1976
(DW 955)
Page
Date
2000-06 1
INDEX
D1976 DISHWASHER
(DW955)
ll PROGRAMS 2
ll ELECTRICAL FUNCTIONS 6
ll PART NUMBER SUFFIX DEFINITIONS 8
ll SPARE PARTS LIST
♦♦ Casing and related parts 10
♦♦ Container and related parts 12
♦♦ Door 14
♦♦ Control Panel 16
♦♦ Dishwashing system 18
♦♦ Interior light 20
ll WIRING DIAGRAM 22
ll TIMER DIAGRAM 23
ll SERVICE INFORMATION
♦♦ Door springs 24
♦♦ Water level 25
♦♦ Door lock 26
♦♦ Control unit failure analysis 27
♦♦ Remaining time indication 28
Model D1976
(DW 955)
Page
Date
2000-06 2
PROGRAMS
PROGRAMS
PROGRAM DEFINITION
Pots and pans/Sani Two prewashes, main wash, three rinses* and drying.
Super Two prewashes, main wash, two rinses* and drying.
Normal Two prewashes, main wash, two rinses* and drying.
Light One prewash, main wash, two rinses, drying.
Quick One short prewash, short main wash, two rinses.
Rinse & hold One rinse without heat at 131°F (55°C). If Heat fan dry is selected, the
heating element will activate. Drying: 158°F (70°C)
Plate warm Activates the heating element.
*The Pots and Pans/Sani, Super and Normal programs can be programmed for an extra rinse (see
page 4). In that case, the temperatures for the next-to-last rinse would be the household water
temperature and the final rinse would be the last rinse temperature indicated in the table on page 3.
OPTIONS
TimeDelay Each press of this touchpad delays the start by one hour, up to 12 hours. The
number of hours is displayed in the LED window. After you select the hours,
press Start. To cancel, press the Delay touchpad until the LED displays
zero then press Start.
Economy When used with low temperature settings, saves energy by extending the wash time.
Heat Dry Activates the fan for an additional 30 minutes after the drying cycle to cool the dishes.
Fan Cool Pressing this touchpad activates the heating element for 12 minutes after the final
rinse. (158° F/70° C)
Temp Select Lets you select the water temperature for the wash programs (except Rinse.) The
indicator light glows when it’s on the High setting and remains off when set on
Low. The LED displays the temperatures in Celsius. Refer to the table on the next
page for the temperature options and conversions to Fahrenheit.
Start/Stop Press this touchpad to Start or Stop the machine. To interrupt a program, hold this
touchpad down for three seconds.
Model D1976
(DW 955)
Page
Date
2000-06 3
PROGRAMS
WASH PROGRAM TEMPERATURES
Wash Temp 1st 2nd Main 1st 2nd Final
Program Options Prewash Prewash Wash Rinse Rinse Rinse
Pots & 131°F 113°F House 131°F House House 131°F
Pans/Sani* (55°C) (45°C) (55°C) (55°C)
149°F 113°F House 149°F House House 149°F
(65°C) (45°C) (65°C) (65°C)
158°F 113°F House 158°F House House 149°F
(70°C) (45°C) (70°C) (65°C)
167°F 113°F House 167°F House House 149°F
(75°C) (45°C) (75°C) (65°C)
Super*131°F 113°F House 131°F House 131°F n/a
(55°C) (45°C) (55°C) (55°C)
149°F 113°F House 149°F House 149°F n/a
(65°C) (45°C) (65°C) (65°C)
158°F 113°F House 158°F House 149°F n/a
(70°C) (45°C) (70°C) (65°C)
167°F 113°F House 167°F House 149°F n/a
(75°C) (45°C) (75°C) (65°C)
Normal* 131°F 86°F House 131°F House 131°F n/a
(55°C) (30°C) (55°C) (55°C)
149°F 86°F House 149°F House 149°F n/a
(65°C) (30°C) (65°C) (65°C)
158°F 86°F House 158°F House 149°F n/a
(70°C) (30°C) (70°C) (65°C)
167°F 86 House 167°F House 149°F n/a
(75°C) (30°C) (75°C) (65°C)
Light 113°F House n/a 113°F House 113°F n/a
(45°C) (45°C) (45°C)
131°F House n/a 131°F House 131°F n/a
(55°C) (55°C) (55°C)
149°F House n/a 149°F House 149°F n/a
(65°C) (65°C) (65°C)
Quick 113°F House n/a 113°F House 113°F n/a
(45°C) (45°C) (45°C)
131°F House n/a 131°F House 131°F n/a
(55°C) (55°C) (55°C)
149°F House n/a 149°F House 149°F n/a
(65°C) (65°C) (65°C)
*The Pots and Pans/Sani, Super and Normal programs can be programmed for an extra rinse (see
page 4). In that case, the temperatures for the next-to-last rinse would be the household water
temperature and the final rinse would be the last rinse temperature indicated above.
Model D1976
(DW 955)
Page
Date
2000-06 4
PROGRAMS
EXTENDING FAN COOLING TIME
To extend the fan cooling time, press S1 five times then press one of the following:
S5 for 30 extra minutes
S4 for normal fan cooling time
SETTING AN EXTRA RINSE
To add an extra rinse to the Pots and Pans, Super, Normal and Light wash programs, press S2 five
times then press one of the following:
S5 for an extra rinse
S4 for the normal number of rinses
SETTING CHILD-SAFE START FUNCTION
The start function can be reprogrammed so that the Start button must be pressed in for 3 seconds to
start the programs. To do this, press S4 five times then press one of the following:
S5 to get a prolonged start function or
S4 to get a normal start function.
SETTING PUMP-OUT TIME
If it's necessary to reprogram the pump-out time, you can do so bypressing S3 five times then pressing
one of the following:
Press: to get an outlet time of:
S3 20 seconds
S4 25 seconds (factory setting)
S5 35 seconds
S6 45 seconds
S7 85 seconds
SETTING INLET TIME
You can reprogram the inlet time on level controlled and time controlled inlets. To do this, press S5 five
times then press one of the following:
Press: to get an inlet time of:
S3 45 seconds (factory setting)
S4 56 seconds
S5 68 seconds
S6 90 seconds
S7 113 seconds
S8 180 seconds
S = Pushbutton switch L = Indicator light
Model D1976
(DW 955)
Page
Date
2000-06 5
FAULT CODES
Blinking lights and an F-code in the LED window indicate a machine fault.
Code Blinking Lights Problem
F1 L3 and L7 Heating element
F2 L1–L8 Overfill
F3 L4 and L5 Thermistor fault (heater control)
F4 L1–L4 Water inlet
FAULT-TRACING PROGRAM
The functions of the electrical components can be tested by pressing S6 five times then pressing one
of the following:
Press to test
S2 inlet valve 2
S3 inlet valve 1
S4 combi-dispenser
S5 heating element
S6 circulation pump
S7 outlet pump
S8 fan motor and wax motor
Stop the fault-tracing program by pressing S13.
LINKS ON THE PROCESSOR BOARD
(for program variations)
These diodes should be cut for proper U.S.iInstallation:
Link 955: DW955, processor board layout
Link USA: USA processor board layout
S = Pushbutton switch L = Indicator light
PROGRAMS
Model D1976
(DW 955)
Page
Date
2000-06 6
CONTROL PANEL (see page 17)
The control panel contains a microprocessor for control of programs, circulation pump, inlet valves, etc.
It also allows for custom settings of programs (see page 3).
CIRCULATION PUMP/MOTOR (see page 19)
The circulation pump/motor consists of a synchronous motor and pump, constructed in an integrated
unit. A 16 µF capacitor is fitted to the circulation motor/pump.
OUTLET PUMP (see page 19)
The outlet pump consists of a synchronous motor and pump, constructed in an integrated unit.
INLET VALVE (see page 19)
A safety-unit type: Two solenoids and valve seats are independently connected to a unit.
HEATING ELEMENT (see page 13)
1400 Watt
THERMISTOR (see page 13)
The thermistor controls the water temperature within +/-1°C (2.5°F) to give the required temperature.
The heater will be disconnected if the thermistor is short-circuited or loosened from the circuit board and
the fault code "F3" displays in the LED window. The normal resistance of the thermistor is between 25
and 15K ohm at 68°F (20°C) or 86°F (30°C) alternately.
OVERHEAT PROTECTION (see page 13)
The thermostat has a switch-off function at 190° F (88°C) that prevents the heating element from staying
on if the control unit or the timer should fail.
DOOR SWITCH (see page 19)
A microswitch senses that the door has been opened. This interrupts the program and cuts the power to
all control components (motor, valves, etc.).
LEVEL SWITCH (PRESSURE SWITCH) (see page 13)
This switch protects against overfilling by interrupting the power to the inlet valve and starting the outlet
pump. If the water level has not dropped within 30 seconds or if overfill has occurred twice during the
same program, the program will be terminated and a fault code displays. The overfill protection operates
during all programs, including fault-tracing, even if the microprocessor is faulty.
OVERFILL SWITCH (see page 13)
A float in the base pan influences a microswitch that disconnects the inlet valve and starts the outlet
pump.
COMBI-DISPENSER (see page 15)
The combi-dispenser dispenses both detergent and rinse aid. The dispenser has an adjustable volume
chamber for setting the desired amount of rinse aid.
TURBO FAN (see page 15)
The turbo fan vacuates the moist air from the machine during the drying phase of the program. The fan
system consists of a fan motor that runs a two-part impeller. Dry, cool air is pulled in from the door into
one of the impeller halves. A wax motor opens a damper and the moist air is pulled into the other part of
the impeller. The dry, cool air and warm, moist air mix and condense in the condensation chamber. The
condensed moisture then drains through the channel to the lower sump area. Dry air is then vented out
through a channel below the outer door.
ELECTRICAL FUNCTIONS
Model D1976
(DW 955)
Page
Date
2000-06 7
Electrical Supply
The machines are wired for connection to a single-phase, 120V, 15A supply, with a heater power of
1400W, giving a total power requirement of 1600W.
VALUES FOR WIRING DIAGRAMS
Resistance values at 68° F (+/-5°F), 20° C (+/-3°C)
(Values within +/- 10% is normal.)
AP Drain pump 120V, 60 Hz, 25.5 ohm
BB Illumination switch
CP Main pump 120 V, 60 Hz, Main = 10.5 ohm, Aux = 14.5 ohm
KD Combi-dispenser 120 V, 0.31 ohm
EL Heating element 120 V, 1400 W, 10 ohm
FFilter 680 K ohm (1-2, 3-4)
IV Inlet valve 120 V, 9.93 K ohm
FL Fan 120 V, 0.25 K ohm
LB Door switch
LU Door
NLevel switch
PControl unit
RRelay 230 V Eberle, 0.59 K ohm
TThermostat 19–25 K ohm
TB Pushbutton switch
TE Temp. thermistor 18–25 K ohm
WAX Wax motor 1.5–3.0 K ohm
VMG Rinse ag sensor
OB Overflow switch
ELECTRICAL FUNCTIONS
Model D1976
(DW 955)
Page
Date
2000-06 8
PART NUMBER SUFFIX DEFINITIONS
The lists below define the meanings of the dashed numbers or letters following a part number:
Colors:
-0 White
-29 Black, bright
-33 Black
-36 Dark grey
-49 Helios grey
-69 black, metallic
-77 grey
-81 metallic
-95 Stainless Steel
Note: Not all colors are available for all parts.
Doors
-M for units with fan
-P for integrated units
-R for decor frames, long devision
-S for decor frames, short devision
-T for decor frames with adjustable lower part
Model D1976
(DW 955)
Page
Date
2000-06 9
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Model D1976
(DW 955)
Date
2000-06 Page
10
CASING AND RELATED PARTS
9
11
1
2
3
4
5
6
7
8
10
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