Electrolux EWM0931 Series Service Manual page 40

E43: Problems with the component (triac) controlling the door delay
E43
Checks to perform:
To check the wiring, with the
door open, measure on the
following wiring connectors
(fig. 4):
- between wire J5-2 and J5-3,
the circuit must NOT be open
(measure the resistance
value of the PTC).
- between wire J5-1 and J5-2,
the circuit must be OPEN.
Is the system ok?
Y
E
S
Replace the circuit board and
repeat the diagnostic cycle to
check for any further alarms.
J14 J5
J4
GND
Fig. 4
Traditional
doorlock
with flange
n Ω
∞
Ω
2010 SOI/DT-mdm FCPD-dp Quality-tb
Guide to diagnostics for electronic controls EWM0931x
system (device with 3 connections and flange)
Check that all the connectors are inserted correctly
NO
J13 J8 J7
J11 J10
J6
MAIN PCB
∞
Ω
n
Ω
Detach the connectors and
measure on the component
(fig. 9):
- between connectors 3 and
4, the circuit must not be
open (measure the
resistance value of the PTC).
- on the other hand, between
connectors 4 and 5, the
circuit must be open (the
numbers are printed on the
component).
Is the door interlock ok?
Y
E
S
Measure the continuity
between connector J5 (main
PCB) and the door lock
connector
Is the wiring ok?
Y
E
S
Replace the circuit board and repeat the diagnostic
cycle to check for any further alarms.
40/67
Replace the door
lock and repeat
the diagnostic
NO
cycle to check for
any further
alarms.
Replace the
wiring and repeat
the diagnostic
NO
cycle to check for
any further
alarms
If there are burns on the circuit board,
see page 65
E43
Fig. 9
599 72 97-24