Asko DW90 Series Service Manual page 27

Service manual DW90
Troubleshooting
Fault and information codes DW90.3
Audible signal sounds when a fault is indicated on the display.
Display
Close the door
Temp stop fault
Overfilling
Thermistor fault
Water inlet fault
Inlet valve leakage
Pressure sensor fault
Water outlet fault
Turbidity sensor fault
Diverter fault
Humidity sensor fault
Clean filter
Cause
The door is open
Temp stop fault
Temperature increase less than 5°C
(41°F) in ten minutes. Program continues
with the process. Only indicated in
service menu.
Overfilling
Too much water in the machine
(pressure sensor) or float activated. If
the water has not been emptied within
60 seconds, the program stops (drain
pump activated).
Thermistor fault
Communication between the thermistor
and control unit has stopped or the
thermistor is reporting temperatures
greater than 80°C (176°F). Program
continues with the process. Only
indicated in service menu.
Water inlet fault
< 80 pulses within 60 seconds or
correct number of pulses not achieved
within 255 seconds. Program stops.
Inlet valve leakage
Water intake detected when inlet
valve deactivated in program sequence
or standby. In this case the machine
attempts to close the valve by opening
it for 2 seconds and then closing it
again. If water flow through the valve
is still detected any current program is
stopped (drain pump activated).
Pressure sensor fault
Output signal > 4.8 V. The program
continues. Only indicated in service menu.
Water outlet fault
Water not drained after 120 seconds
draining. Program stops.
Turbidity sensor fault
Only indicated in service menu. The
machine assumes high turbidity in case
of "uncertainty" in the auto program.
Spray arm diverter fault
Position switch always closed or open.
The program continues. Only indicated
in service menu.
Humidity sensor fault
"Humidity sensor fault" (only in service
menu)
Clean filter
The display indicates "Clean filter"
automatically after every 300 cycles.
Action
Close the door
Check
Element, thermistor, water level, circulation
pump, control unit and cables.
Check
Drain pump (blocked hose), flow meter,
inlet valve, leaks and cables.
Check
Thermistor, plugs, wire harness, and control
unit.
Check
Water inlet, flow meter, inlet valve and
cables.
Check
Leak through inlet valve and flow meter.
Check
Pressure sensor, control unit and cables.
Check
Drain pump, hoses, drain hose fittings,
control unit and cables. Also check whether
filter is blocked.
Check
Water quality, filters, turbidity sensor and
drain system.
Check
Spray arm diverter (functioning gearbox,
switches and cables).
Check
Humidity sensor, cables, fan, damper and
Wax motor.
This message is not a fault code but a
reminder to the customer to check the filters
and clean them if necessary. The message
disappears the next time a button is pressed.
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