Electrolux EDW 1000 Service Manual page 17

5.2.6 WATER FILL TIME
During the entire duration of the fill phase (i.e. from sub-phase 5.2.1 to sub-phase 5.2.4), the solenoid
valve may remain in the open position for a maximum overall time of 4 minutes.
Within this period, the system detects whether the pressure switch signal has stabilized on
"FULL".
If the pressure switch signal stabilizes on "FULL" (sub-phase 5.2.4) after this 4-minute period
during which the solenoid is open, a Time-out is generated and the appliance goes into Alarm
mode [AL5] (no water).
5.2.7 POWER FAILURE DURING WATER FILL PHASE
If the water fill phase is interrupted by a power failure, the fill always resumes from sub-phase 5.2.1
when the power supply is restored; all the counters are reset to zero.
The certainty that the fill results are correct is given by the fact that the aperture of the solenoid
depends only on the aperture of the pressure switch contact on "EMPTY"; in this way, water is
introduced until the level is sufficient to close the pressure switch contact on "FULL".
If the water fill phase is interrupted by opening the door, the values of all the counters are
memorized; when the door is re-closed, the water fill phase resumes from the point at which it was
interrupted.
5.3 CONTROL OF STABILITY OF WASHING WATER
When the fill phase is complete, the appliance passes to the washing phase.
In the washing phase - with cold or heated water - the status of the pressure switch is monitored
constantly in order to ensure that the hydraulic system operates efficiently.
Water replenisjment may take place is necessary.
If the pressure switch returns to "EMPTY", the fill solenoid is activated for a time (T) of:
- T 3 sec
- T x sec
During the washing phase, the fill solenoid may remain open (also at intervals) for a maximum total
time of 60 seconds; if this period is exceeded, a Time-out is generated and the machine passes to the
Alarm condition ([AL5] - no water present).
5.3.1 INTERRUPTION OF THE WASHING CYCLE DURING WATER REPLENISHMENT
If the washing cycle is interrupted due to a power failure, the current value in the counter which
monitors the solenoid aperture time (limit 60 sec.) is reset to zero. When the power supply is restored,
the count is restarted from the beginning.
If the washing cycle is interrupted by opening the door, the current value in the counter which
monitors the solenoid aperture time (limit 60 sec.) is memorized. When the door is re-closed, the
count resumes from the point at which it was interrupted.
TSE-P 02.01 LF
if the duration of the "EMPTY" signal is less than 0.5 sec.
if the duration of the "EMPTY" signal is in excess of 0.5 sec.
(Txsec = time required by the pressure switch to commutate from "EMPTY"
to "FULL".
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