E21: Difficulty In Draining - Electrolux EWM2100 Service Manual

E21
Maximum drain time exceeded (measured for each phase of the cycle)
Tests to be performed:
Is the drain filter clean?
Is the drain system OK? (drain hose and
domestic hydraulic circuit)-fig.1
YES
Does the drain
pump function? (in
the diagnostic cycle,
select fill and
phase 2
drain) (noise
phase 8
from the pump)
YES
Is the hydraulic circuit of the pressure switch
efficient? (i.e. not obstructed)
Replace the pressure switch and restart the
diagnostic cycle to check for further alarms.
03-2009 SOI/DT-mdm FCPD-dp Quality-fz

E21: Difficulty in draining

YES
Is the ohmic
resistance of the
pump about
NO
155÷200Ω?
(measure directly on
the connector on the
circuit board side
across J7-9 and J7-
1) -fig. 4-
YES
Is the pump
impeller jammed or
broken?
YESI
Clean or replace the drain pump and restart the diagnostic cycle to check
YES
NO
Clean the filter and restart the diagnostic cycle
to check for further alarms.
NO
Disconnect and check the drain system.
Is the ohmic
resistance of the
pump about
NO
155÷200Ω?
(measure directly on
the pump)
-see fig.5-
YES
Check and if necessary replace the wiring and
restart the diagnostic cycle to check for further
NO
Replace the circuit board and restart the
diagnostic cycle to check for further alarms.
for further alarms.
NO Repair the hydraulic circuit of the pressure
switch and restart the diagnostic cycle to check
If there are traces of burning on the
circuit board, refer to page
25/91
Replace the pump
and restart the
NO
diagnostic cycle to
check for further
alarms.
alarms.
for further alarms.
599 70 56-70
E21
90