E74: Ntc Probe Improperly Positioned - Electrolux EWM09312 Service Manual

E74
Checks to perform:
Is the probe visibly positioned correctly in
its seat?
(See fig. 17)
YES
Measure the value of the NTC probe
(5.7÷6.3KΩ at 20°C) between the J7-4
and J7-5 contacts of the wiring
connector.
(see fig. 4).
Is the value correct?
(between 5.7 and 6.3 KΩ at 20°C)
YES
Run phase 6 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 J7-4 and J7-5 of the
wiring connector (see fig. 4).
Is the value below 5 KΩ?
YES
Replace the circuit board and repeat the
diagnostic cycle to check for any further
alarms.
MAIN CIRCUIT BOARD
5.7÷6.3KΩ
(20°C)
Temperature probe
∞
Ω
2012 SOE/DT-mdm FCPD-dp
Guide to diagnostics of EWM09312 electronic controls

E74: NTC probe improperly positioned

Heating
element
∞
Ω
!
Check that all the connectors are correctly inserted
Reposition the probe in its seat and
repeat the diagnostic cycle to check for
NO
Replace the washing heating element
and repeat the diagnostic cycle to check
NO
for any further alarms.
DRAIN THE WATER FROM THE TUB
BECAUSE IT IS BOILING HOT
NO
Replace the washing heating element
and repeat the diagnostic cycle to check
J14 J5
J4
GND
Fig. 4
Fig. 17
If there are burns on the circuit board,
!
56/69
any further alarms.
!!WARNING!!
for any further alarms.
J13 J8
J11 J10
J6
see page 67
599 75 18-74 Rev.00
E74
J7