Table of Contents
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 alarm
conditions.
2007-10 SOI/DT-mdm FCPD-dp Quality-fz
E21: Difficulties in draining
YES
Is the ohmic
resistance of the
pump about 155-
NO
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 alarm conditions.
NO
Disconnect and check the drain system.
Is the ohmic
resistance of the
pump about 155-
NO
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 alarm
for further alarm conditions.
NO
Repair the hydraulic circuit of the pressure
switch and restart the diagnostic cycle to check
for further alarm conditions.
If there are traces of burning on the
circuit board, refer to page
22/59
Replace the pump
and restart the
NO
diagnostic cycle to
check for further
alarm conditions.
alarm conditions.
conditions.
599 70 32-47
E21
59
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