Guide to diagnostics of EWX11831 electronic controls
2013 TS/DT-mdm FCPD-dp
56/71
599 77 00-82 Rev. 01
E74
E74: NTC probe improperly positioned
E74
Checks to perform:
MAIN CIRCUIT
BOARD
Heating
element
Temperature
probe
5.
7÷
6.
3K
Ω
(20°
C)
Ω
Ω
5.7÷6.3K
Ω
(20°C)
J1
J19 J17 J1
J3
J7
J22
J20
J18 J15
J9
J13
J6
J1
Fig.
J12
Run
phase 7
of the diagnostic cycle and
wait for the water to fill. Wait in this phase
for five minutes. Switch the appliance off
and measure the value of the NTC probe
between contacts J3-4 and J3-5 of the
wiring connector
(fig. 4)
.
Is the value below 5K
?
Measure the value of the NTC probe
(5.7÷6.3K
at 20°C) between contacts
J3-4 and J3-5 of the wiring connector
(fig. 4).
Is the value correct?
(between 5.7 and 6.3K
at 20°C)
Is the probe visibly positioned correctly in
its seat?
-see fig. 21-
Reposition the probe in its seat and
repeat the diagnostic cycle to check for
any further alarms.
Replace the washing heating element
and repeat the diagnostic cycle to check
for any further alarms.
Replace the circuit board and repeat the
diagnostic cycle to check for any further
alarms.
NO
NO
NO
Fig. 21
If there are burns on the circuit board,
see page 69
!
Check that all the connectors are correctly inserted
!
Run phase
9
of the diagnostic cycle,
drain water from the tub
.
!!CAUTION:
THE WATER COULD
BE SCALDING HOT!!
Replace the washing heating element
and repeat the diagnostic cycle to check
for any further alarms.
!
!
Y
E
S
Y
E
S
Y
E
S