9 Alarms

In the event that an abnormal situation should occur which might affect the correct operation of the appliance, the circuit board causes a safety system to intervene. In most cases, this interrupts the washing cycle. The last three alarm conditions are stored in memory.

Using a special procedure available only to Service Engineers, it is possible to read all the alarms stored in memory. However, only four current alarm conditions are displayed to the user.

The alarms are displayed by means of a sequence of flashes of the END OF CYCLE LED; these are synchronized with a series of “beeps” from the buzzer.


9.1 Table of alarms



Type of alarm

No. flashes of end-of- cycle LED and “beeps”


Displayed to the user


Description of the alarm condition


Machine status


Possible causes


i10


1


YES

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)


The drain pump switches on, then the cycle stops

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 (solenoid triac short- circuited)


i20


2


YES


Water drain time-out

(The pressure switch does not return to EMPTY after two drain phases lasting 120 seconds) (**)


The drain pump switches on, then the cycle stops

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


i30


3


YES


Intervention of Anti-flooding system

(the drain pump switches on)


The cycle is interrupted and the drain pump switches on

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); wiring faulty


i50


5


YES


Motor triac short-circuited

(the washing pump runs uncontrolled at maximum speed)

Water fill to level (if necessary), disactivation of the other

actuators, cycle interrupted. The washing motor runs at maximum

speed and the alarm is displayed.


Circuit board faulty


(**) If inside the appliance there is no water at all (correct drain) but this alarm is displayed, check the heater (possible dispersion) and the anti-interference suppressor.



Type of alarm

No. flashes of end-of- cycle LED

and “beeps”


Displayed to the user


Description of the alarm condition


Machine status


Possible causes


i60


6


NO


Heating Time-out

(the check takes place every 3 minutes: the temperature must increase by a certain amount at each step)


The programme continues to the end without heating (the washing result will probably be unsatisfactory)

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.


i70


7


NO


NTC sensor short-circuited or open

The programme continues to the

end without heating (the washing result will probably be unsatisfactory)


NTC sensor faulty; wiring short-circuited / open; circuit board faulty.

i80

8

NO

Communication error between the microprocessor and the EEPROM

Machine inoperative: no selection

possible (*)


Circuit board faulty.

i90

9

NO


Problems with software configuration

The fault occurs when switching on: no selection possible (*)

Circuit board faulty (configuration software incorrect).


ib0


11


NO


Problems with the turbidity meter

[if featured] (Calibration Time-out)

The programme continues as if a

“heavy soiling” condition had been detected.


Turbidity sensor faulty; sensor wiring faulty; circuit board faulty.


id0


13


NO


Problems with the washing motor: no signal from the tachymetric generator (washing pump powered, but no signal from the generator)

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)


Motor winding interrupted / short-circuited; motor jammed (foreign bodies); wiring to washing motor faulty; motor capacitor faulty; Tachymetric generator interrupted / short-circuited; circuit board faulty.


iF0


15


NO


Water replenishment Time-out

(3 times during the T.S. Time-out)

The cycle continues until the next phase without supplementary fills

and without heating. The error is cancelled on completion of a drain

phase.


Dishes upside-down; central filter clogged; excessive foam; leaks from the sump-pressure switch coupling; pressure switch faulty / false contacts.


(*) 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

Ø Continuity of the power cable

Ø Correct operation of the suppressor

Ø Closure of the door switch contacts

Ø Continuity of the wiring between connectors A2/B1 on the circuit board and the suppressor.