Electrolux EWM09312 Service Manual page 30

E21
Is the drain filter clean?
Is the drain system ok?
(drain pipe and water system of the home)
-(Fig.1)-
YES
Is the drain pump
working?
(in the diagnostic
cycle, select
phase 2 fill and
phase 8 drain)
(noise from the
pump)
Y
E
S
Is the pressure switch's water circuit efficient?
(no clogging)
Replace the pressure switch and repeat the
diagnostic cycle to check for any further
Technical Support - A.D.L.
Maximum drain time exceeded (measured for every cycle phase)
YES
Is the resistance
measurement of the
pump approximately
155÷182 Ω? (Measure
NO
it directly on the
connector on the board
side between J5-4 and
J5-5) –(Fig. 4)-
Y
E
S
Is the pump rotor
mechanically
blocked or broken?
YES
Clean/replace the drain pump and repeat the diagnostic cycle to check for
YES
alarms.
E21: Drain difficulty
!
Check that all the connectors are correctly inserted
Clean the filter and repeat the diagnostic cycle
NO
to check for any further alarms.
Disconnect and check the drain system
and repeat the diagnostic cycle to check
NO
Is the resistance
measurement of the
pump approximately
155÷182 Ω?
NO
(Measure it directly
on the pump)
-(see Fig.5)-
YES
Check/replace the wiring 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
any further alarms.
Repair the water circuit of the pressure switch
and repeat the diagnostic cycle to check for any
NO
!
30/70
for any further alarms.
Replace the pump
and repeat the
diagnostic cycle to
NO
check for any
further alarms.
further alarms.
If there are burns on the circuit board,
see page 68
E21
599 74 23-12 Rev.00