Merloni Elettrodomestici
DISHWASHER EVO3
Service manual
EN
03-05-20/0
50-54
Language Issue/Edition
Page
9.2
RESET CODE
With the machine powered up, hold the “P” key down for 5 seconds until you
hear 4 beeps.
To select a new test/Autotest cycle,
wait for 20 seconds with the DW reset,
off and door closed.
9.3
Test and Autotest specifications
1. Switch on the dishwasher.
2. Turbidity sensor reads only if the pressure switch is open (switch input
receives alternating current only when open).
• if the max. turbidity reading is detected (clean, connected), the rinse aid
indicator light switches on until the end of the cycle.
• if the min. turbidity reading is detected (dirty, disconnected), the rinse
aid indicator light switches off until the end of the cycle.
• if the rinse aid indicator lights stays off, the turbidity sensor is not working.
Probable cause of malfunction: turbidity sensor disconnected or faulty
or pipe section with light source is dirty, rinse aid indicator light not
working - disconnected.
3. Salt indicator light switches on until end of cycle (at the same time as the
rinse aid indicator light)
• if the salt indicator light stays off, it is not working.
Probable cause of malfunction: salt indicator light disconnected or
faulty connection.
4. 3 litres water filled between rinses via the T (search duo wash
parameters, wash top and bottom racks)
• if the timer does not receive the signal from the turbine but water is
being filled, when the between-rinse pressure switch closes (at 1.2l), it
will switch on the wash motor and fill water until the in-cycle pressure
switch threshold is reached, for a maximum of 153 seconds from
energization of the solenoid valve.
Probable cause of malfunction: turbine disconnected or faulty.
5. 10 second pause, check HIGH PRESSURE sensor status, (must be closed)
• if the HP sensor is found to be open the dishwasher will show the filter
cleaning alarm. Probable cause of malfunction: HP sensor disconnected
or faulty.
6. WASH MOTOR on.
7. 1 litre water filled in-cycle through the TURBINE (4 litres in total), (with
wash motor on)
8. pressure switch interrogation (O-C) (with wash motor on)
N.B.
The Autotest starts at point 18