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6.4 Fault codes
NB: Some DW70.3 and DW70.4 models
may have a status lamp that always flashes
together with the current fault indicator. If the
customer has activated the sound option an
audible signal is also heard when a fault is
indicated.
Temperature stop fault (DW70.1 no
indication)
70.3 L1 flashes
70.4 “Temp. stop fault”
70.5 Fault code “F1”
Temperature increase less than 5°C in ten
minutes. Program continues with the proc-
ess. Only indicated in service menu.
Check: Element, thermistor, water level,
circulation pump, control unit and cables.
Overfilling
70.1 L2 flashes
70.3 L2 flashes
70.4 “Overfilling”
70.5 Fault code “F2”
Too much water in the machine (pressure
sensor) or float activated. If the water has not
been emptied within 60 seconds, the pro-
gram stops (drainage pump activated).
Check: Drainage pump (blocked hose), flow
meter, inlet valve, leaks and cables.
Thermistor fault (DW70.1 no indication)
70.3 L3 flashes
70.4 “Thermistor fault”
70.5 Fault code “F3”
Stopped or >80 °C. Program continues with
the process. Only indicated in service menu.
Check: Thermistor and control unit.
Water intake fault (DW70.1 no indication)
70.3 L4 flashes
70.4 “Water inlet fault”
70.5 Fault code “F4”
< 80 pulses within 60 seconds or correct
number of pulses not achieved within 255
seconds. Program stops.
Check: Water inlet, flow meter, inlet valve
and cables.
Leaking valve
70.1 L5 flashes
70.3 L5 flashes
70.4 “Leaking valve”
70.5 Fault code “F5”
Water intake detected when inlet valve deac-
tivated. Any current program stopped (drain-
age pump activated).
Check: Leak through inlet valve and flow
meter.
Pressure sensor fault (DW70.1 no
indication)
70.3 L6 flashes
70.4 “Pressure sensor fault”
70.5 Fault code “F5”
Output signal > 4.8 V. The program contin-
ues. Only indicated in service menu.
Check: Pressure sensor, control unit and
cables.
Drainage fault (DW70.1 no indication)
70.3 L1 and L2 flash
70.4 “Drainage error”
70.5 Fault code “F6”
Water not drained after 120 seconds drain-
ing. Program stops.
Check: Drainage pump, hoses, drainage
hose fittings, control unit and cables. Also
check whether filter is blocked.
Turbidity sensor fault (DW70.1 no
indication)
70.3 L1 and L5 flash
70.4 “Turbidity sensor fault”
70.5 Fault code “FA”
Only indicated in service menu. The machine
assumes high turbidity in case of “uncertain-
ty” in the auto program.
Check: Water quality, filters, turbidity sensor
and drainage system.
TROUBLESHOOTING
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