Alarms - Electrolux COMPACT MIDI + EDW 500 Service Manual

16. Alarms

When an abnormal situation occurs that may interfere with machine functioning, the main board activates a safety
system which in most cases interrupts the washing cycle. The last three alarm situations are stored in memory.
Using a special procedure, service personnel can display all the alarms stored in memory. The user is only shown
four of the alarms in progress.
The END OF CYCLE LED flashes repeatedly.
No. flashes
Type of Displayed
of end-of-
Alarm to the user
cycle LED
i10
1 yes
i20
2 yes
i30
3 yes
i50
5 yes
i60
6 no
i70
7 no
i80
8 no
i90
9 no
ib0
11 no
id0
13 no
iF0
15 no
Spares Operation - R.Kurzke 02/05
Description of the alarm condition
Water fill time-out (The pressure
switch does not close on FULL after
90 sec. static fill, or never closes on
"FULL" during the initial 60 sec of
the dynamic fill at 2800 rpm)
Water drain time-out (The pressure
switch does not return to EMPTY
after two drain phases lasting 120
seconds)
Intervention of Anti-flooding system
(the drain pump switches on)
Motor triac short-circuited (the
washing pump runs uncontrolled at
maximum speed)
Heating Time-out (the check takes
place every 3 minutes: the
temperature must increase by a
certain amount at each step)
NTC sensor short-circuited or open
Communication error between the
microprocessor and the EEPROM
Problems with software
configuration
Problems with the turbidity meter [if
featured] (Calibration Time-out)
Problems with the washing motor:
no signal from the tachometric
generator (washing pump powered,
but no signal from the generator)
Water replenishment Time-out (3
times during the T.S. Time-out)
Machine status
The drain pump switches on,
then the cycle stops
The drain pump switches on,
then the cycle stops
The cycle is interrupted and the
drain pump switches on
Water fill to level (if necessary),
deactivation of the other
actuators, cycle interrupted.
The washing motor runs at
maximum speed and the alarm
is displayed.
The programme continues to
the end without heating (the
washing result will probably be
unsatisfactory)
The programme continues to
the end without heating (the
washing result will probably be
unsatisfactory)
Machine inoperative: no
selection possible (*)
The fault occurs when
switching on: no selection
possible (*)
The programme continues as if
a "heavy soiling" condition had
been detected.
The heating element is
switched off. If the fault persists
after the Time-out, the washing
pump operates at maximum
speed and the alarm code is
stored in memory (the cycle
continues)
The cycle continues until the
next phase without
supplementary fills and without
heating. The error is cancelled
on completion of a drain phase.
- 20 -
Possible causes
Tap closed; water mains pressure too low;
fill solenoid / wiring faulty; hydraulic circuit
of pressure switch obstructed; level
pressure switch / wiring faulty; circuit board
faulty
Drain circuit obstructed/blocked; drain
pump interrupted or jammed (foreign
bodies); level pressure switch blocked on
FULL (1-3); hydraulic circuit of pressure
switch obstructed; wiring faulty; circuit
board faulty
Water leakage from the tub - sump and
various connections (pump, upper spray
arm duct etc.). Floating sensor blocked
mechanically. Microswitch faulty. Fill
solenoid blocked mechanically. Circuit
board faulty (solenoid triac short-circuited)
Circuit board faulty
Heating element faulty; intervention of
safety thermostats (open); wiring faulty;
NTC sensor (poor thermal contact);
insufficient water circulating in the tub;
washing pump faulty (impeller stripped);
circuit board faulty.
NTC sensor faulty; wiring short-circuited /
open; circuit board faulty.
Circuit board faulty.
Circuit board faulty (configuration software
incorrect).
Turbidity sensor faulty; sensor wiring faulty;
circuit board faulty.
Motor winding interrupted / short-circuited;
motor jammed (foreign bodies); wiring to
washing motor faulty; motor capacitor
faulty; Tachometric generator interrupted /
short-circuited; circuit board faulty.
Dishes upside-down; central filter clogged;
excessive foam; leaks from the sump-
pressure switch coupling; pressure switch
faulty / false contacts.
599 521 951 EN