Technical Support - A.D.L.
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599 74 23-12 Rev.00
E71
E71: Washing NTC probe faulty
E71
Voltage value out of range (short-circuit or open circuit)
Run
phase 6
of the diagnostic cycle
and wait for the water to fill. Switch
the appliance off and measure the
value of the NTC probe between
contacts J7-4 and J7-5 of the wiring
connector
-see Fig. 4-.
Is the value correct?
(between 5.7 and 6.3 K
Ω
at 20°C)
Detach the connector
and measure directly
on the NTC probe.
- (see Fig. 14)-
Is the value correct?
(5.7
÷
6.3 K
Ω
at 20°C)
Run phase
8
of the
diagnostic cycle,
drain water from the
tub. Replace the
washing heating
element and repeat
the diagnostic cycle
to check for any
further alarms.
Measure between terminals J7-4,
J7-5 of the NTC connector and the
appliance body
– (see Fig. 6) -
Is there any dispersion?
Check/replace the wiring and repeat the diagnostic
cycle to check for any further alarms.
Detach the connector and measure
directly between the terminals of the
NTC probe and the appliance body
(there must be water in the tub.
Has the dispersion been measured?
Replace the circuit board and repeat the diagnostic cycle
to check for any further alarms.
Check/replace the wiring and repeat the diagnostic cycle
to check for any further alarms.
Run phase
8
of the diagnostic cycle,
drain water from the tub. Replace the
washing heating element and repeat
the diagnostic cycle to check for any
further alarms.
NO
YES
NO
NO
Y
E
S
YES
NO
YES
Fig. 14
MAIN CIRCUIT BOARD
Heating
element
Temperature probe
5.7÷6.3K
Ω
(20°
C)
5.7÷6.3K
Ω
(20°C)
∞
Ω
∞
Ω
If there are burns on the circuit board,
see page 68
!
Check that all the connectors are correctly inserted
!
Fig. 4
Fig. 6
