E21: Drain Difficulty - Electrolux EWM09312 Service Manual

E21
Maximum drain time exceeded (measured for every cycle phase)
Checks to perform:
Is the drain filter clean?
YES
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)
YES
Replace the pressure switch and repeat the
diagnostic cycle to check for any further alarms.
2012 SOE/DT-mdm FCPD-dp
Guide to diagnostics of EWM09312 electronic controls

E21: Drain difficulty

Is the resistance
measurement of the
pump approximately
155÷200 Ω?
(Measure it directly
NO
on the connector on
the board side
between J5-4 and
J5-5) -(see 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
!
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
for any further alarms.
Is the resistance
measurement of the
pump approximately
155÷200 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
NO
diagnostic cycle to check for any further alarms.
any further alarms.
Repair the water circuit of the pressure switch
and repeat the diagnostic cycle to check for any
NO
If there are burns on the circuit board,
!
24/69
Replace the pump
and repeat the
diagnostic cycle to
NO
check for any
further alarms.
further alarms.
see page 67
599 75 18-74 Rev.00
E21