SERVICE MODE
With this procedure it
is possible to access the Service Diagnostics System. Once this mode is accessed,
it is possible to:
• read and cancel the alarms
• control the operation of the various components of the appliance
• start the Service diagnostics mode
Reading the alarms and activating the individual components
To activate the function:
1) Press and hold down the button S1. T
2) Turn the knob anti-clockwise till Position 5:
* The LEDs LD0 and LD1 flash.
* Release button S1.
* Press button S1.
* the first memorised alarm is displayed: the End of cycle LED flashes
and pauses: for the de-codification,
please refer to table of alarm codes.
4) Press again button S1 to display the second alarm.
5) Pressing button S1 again, the third alarm is displayed.
6) Pressing button S1 for the fourth time, the appliance
actuators are activated:
* 4th actuation: regeneration solenoid
* 5th actuation: drain pump
* 6th actuation: water fill solenoid (water up to level)
* 7th actuation: heating (only if water up to level)
* 8th actuation: washing pump
* 9th actuation: detergent/rinse-aid dispenser
* 10th actuation: drying fan
* 11th actuation: it starts again from the first alarm
All positions can be repeated pushing button S1 sequentially.
|
The components are
powered with door closed. |
Cancelling alarm codes
from memory / test of LEDs
It
is good practise to cancel the alarm memorised:
• after reading the alarm code, to check whether it is repeated during the
diagnostics test.
• after repairing the appliance, to check whether it is repeated during the
testing cycle.
To activate the function:
1) Press and hold down button S1.
2) Turn the knob anti-clockwise till Position 5:
* the LEDs LD0 and LD1 flash.
* release button S1.
3) Turn the knob till Position 4.
* Press button S1.
* All LEDs start to flash for 30 seconds.
Functional testing cycle
This
is an abbreviated washing programme (50 min) which allows the Service Engineer
to test all the functions that comprise a traditional washing cycle; in effect,
the system simulates a normal cycle.
Selecting the cycle
To activate the function:
1. Press and hold down button S1.
2. Turn the knob anti-clockwise till Position 5.
* The LEDs LD0 and LD1 flash.
* Release button S1.
3. Turn the knob till Position 3
* press button S1.
* The programme starts: the programme behaves as in a normal cycle; the PAUSE
and CANCEL options are accessible.
[At the beginning of
the subsequent programme (i.e. after the test cycle), the resins are washed.
The overall duration of the test cycle is about 50 minutes.]
Exiting Service and User
modes
To
exit these modes, turn the knob to OFF position and switch the appliance off or
wait 60 seconds:
the LEDs light up and the appliance returns to selection mode.
Electrical circuit
diagram and table of programmes
TABLE OF PROGRAMMES
The
table below lists the phases of the programmes for this type of appliance. As
these can be configured differently, refer to the relative documentation for
the specific cycles available for each mode.
N.B.: The overall
times for the programmes (duration) are approximate, and do not take into
consideration the extra rinse, which may be selected as an option. The various
phases do not include the times for regeneration/washing of the resins which,
being performed “Ad Hoc”, are not carried at at every cycle.
CHECKING THE EFFICIENCY
OF THE COMPONENTS
In
order to facilitate the control procedure for the components to be tested, a
TEST PROCEDURE has been created which indicates the point to which the probes
of the tester should be applied and the correct theoretical value for each
component tested.
* Remove the door and detach all the connectors from the main board.
* Connect the probes of the tester to the appropriate points on the connector.
Compare the ohmic reading with the theoretical value.
Care should be taken
relative to the position of connector "B1" - "B2":
if this connector is replaced in the incorrect position (back-to-front), the
appliance will not function since the power supply will be disconnected.
Measurement points on
the board wiring connectors
The special functions.
The table below briefly
describes how each of the special functions available to the user and to the
Service Engineer can be used. To activate the user mode, the selector must be
turned anti-clockwise.
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.
Table of alarm codes
If it is not possible to
access diagnostics mode, switch the appliance off and then on again to check
that this is not caused by a temporary fault. Before replacing the circuit
board, check that it is correctly powered by controlling the following
* Continuity of the power cable
* Correct operation of the suppressor
* Closure of the door switch contacts
* Continuity of the wiring between connectors on the circuit board and the
suppressor.
USER MODE
With
this procedure it is possible to:
• Modify the regeneration level selection (depending on the water hardness).
• Activate or deactivate the rinse-aid supply.
Regeneration selection
To activate the function:
1. Press and hold down button S1.
2. Turn the knob to Position 1:
* The LEDs LD0 and LD1 flash
* Release button S1
3. Press button S1
* The regeneration level is displayed by the End of cycle LED which
flashes and pauses at intervals: for the de-codification, see summary table of
alarms.
Press button S1 to increase the regeneration level according to the
following values:
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