SUBJECT: New 2009 Range of Dishwashers: Self-diagnostic Sequence and Error Codes.


  1. Foreword:


    Carrying out the Self-diagnosis, resets the following parameters to the factory's settings:

  2. Carrying out the Self-diagnostic Checking Routine:


Connect a Digital Ammeter (20 A reading scale) in series to one of the two phases of the mains wire of the appliance. Open the door of the Dishwasher.


Dishwashers with Selector's Knob

Dishwashers with Keyboard


Set the Program's Selector Knob to P2 and set the Start Delay Knob to 0.


Power-ON the Dishwasher while pushing and holding the Programs Selection Key or P1.

Power-ON the Dishwasher and move the

Program's Selector Knob from P2 to P7 and then back to P3, without passing through the (0) Reset setting. The engagement of Self-diagnosis, is confirmed by a buzzing sound and by the Washing LED being ON.


Release the held Key and push it again 4 times in sequence within 4 seconds.

A buzzing sound and ALL LEDs being turned ON, confirm that the Self-diagnosis was

correctly engaged.


PHASE A

If present, it's now displayed the last ERROR code that was stored in memory: if a DIGIT

display is present, the ERROR is shown on it. Otherwise, ALL Programs LEDs flash together at 1 Hz (1 time per second), for a number of times corresponding to the ERROR number.


The displaying of the ERROR is repeated after a 3" pause, until the Programs Knob is moved from P3 to P4 (ERROR reset).


The displaying of the ERROR is repeated after a 3" pause, until it's pushed the Programs Key or the P1 Key (ERROR reset).

WARNING: It's not possible to advance in the Self-diagnostic Routine, until the ERROR

displaying is resetted. The resetted ERROR remains in the Eeprom memory and can be seen again, with the help of the "Reading" function of the MEM Programming Unit.

The Dishwashers of the DIGIT series display as well a factory code, identifying the type of appliance (i.e. "A0001").

ALL LEDs are turned ON with fixed light (the DIGIT display shows 8.8.)


If the Programs Selector's Knob is now set to each available setting position, the O/I LED will flash for a number of times corresponding to the number of the set position (1 flash in pos. P1, 2 flashes in pos. P2 and so on). End this check in pos. P2, without passing through the (0) Reset. If Start Delay is present, in each position different than 0 the Washing Phase LED flashes. End this check in pos. 0. Pushing the Option Key, turns ON both the Programs LED and the Salt Exhaustion LED. End this check with Option Button not pushed.


Pushing the Programs Key, turns ON and OFF in sequence the Programs LEDs. Pushing the START/RESET Key, a buzzing sound is emitted.

Pushing the Start Delay Key turns ON and OFF in sequence the related LEDs. In case of DIGIT Dishwasher, the Display is turned OFF.

Pushing the Option Button turns ON and OFF in sequence the Option LED, the Salt Exhaustion LED and the Rinse Aid Exhaustion LED.

PHASE B

Close the Detergent Dispenser's Door and close the Door of the Dishwasher. ALL LEDs flash, while a DIGIT shows 8.8. Both SALT and RINSE AID LEDs are turned ON fixed.

It's activated the Solenoid Valve for water load and (if present) it's checked the Turbidity Sensor. If a DIGIT Display is present, it's displayed a numeric value between 01 and 99. This displaying is kept until PHASE E.

In case the Turbidity (cleanliness) Value of water should be out of range, the related ERROR is displayed through the flashing of the Programs LEDs or displaying E9 on the DIGIT Display, together with a sound from the buzzer. Self-diagnosis is halted.

PHASE C

If present, it's activated the Vapor Suction Ventilator for 6 seconds.

PHASE D


It's activated the Motor Pump for 20 seconds, together with the Solenoid Valve for Resin's Regeneration (if present). If present, it's checked the Pulse Washing: the Motor Pump must be able to reach the 800 rpm in 8 seconds. Should some of the tested parameters be out of range, the ERROR is displayed through the flashing of the Programs LEDs or by showing E7 on the DIGIT Display, together with a buzzing sound. Self-diagnosis is halted.


PHASE E


The water load continues until the pressostat's intervention, more 10 sec. and for a maximum time of 2 minutes. Once this time is elapsed, should the pressostat be still tripped to the "empty tank", the trouble is warned through the fast flashing of the Programs LEDs (DIGIT displays E2), together with a buzzing sound. Self-diagnosis is halted. If the pressostat is correctly tripped to "full tank" but the liters-counter sent less than 150 impulses to the Power Module, the trouble is warned through the fast flashing of the Programs LEDs (DIGIT displays Ef), together with a buzzing sound. Self-diagnosis is halted.


All Programs LEDs start flashing (DIGIT displays CO). The NTC Temperature Probe is checked and if it's found OK it's then fed for 2 seconds the Water Heating Element. In case of problems with the NTC, the trouble is warned through the fast flashing of the Programs LEDs (DIGIT displays E5), together with a buzzing sound. Self-diagnosis is halted.

When the Pressostat is tripped to the "full tank" contact and the Motor Pump is working, the Pressostatic Safety Microswitch must have the contacts closed. If not, the trouble is warned through the fast flashing of the Programs LEDs (DIGIT displays Ee, together with a buzzing sound. Self-diagnosis is halted.

PHASE F – G


Being the Motor Pump working, are simultaneously fed both Solenoid Valves (water load and resins regeneration) for 20 seconds.

If the Motor Pump is of the "brushless" type (with built-in electronics), the Motor Pump is

brought to 3000 rpm. If such speed is not reached, the trouble is warned through the fast flashing of the Programs LEDs (DIGIT displays E7), together with a buzzing sound. Self- diagnosis is halted.

PHASE H


The Motor Pump is powered OFF and so is the Water Heating Element. It's now checked the Pressostatic Safety Microswitch that must have the contacts opened. On the contrary, the trouble is warned through the fast flashing of the Programs LEDs (DIGIT displays Eh), together with a buzzing sound. Self-diagnosis is halted.

PHASE L

This is a phase of HEATING and washing, lasting about 8 minutes. All Programs LEDs are turned ON fixed and the LCD display of DIGIT ones shows 8'.


During this phase it's checked that:

  • Starting from a temperature of water lower than 15° C, after the 8 minutes the water temperature is at least 15° C.

  • Starting from a temperature of water higher than 15° C, the water temperature must increase of at least 1° C each 2 minutes.

  • The Ohmic value of the NTC Temperature Reading Probe must be equal to one of the values by design and related to water temperature from 0° C to 95° C.

In this phase can be detected the water leaks. Should a leak be found, the ERROR is warned at the end of Self-diagnosis (DIGIT displays E4).

At the 2nd minute, it's fed the Detergent Dispenser for 60 seconds.

At the last minute, are checked both Salt and Rinse Aid Exhaustion LEDs: they must be turned OFF.



If the Dishwasher is supplied with Pulse Washing, during these 8 minutes it's checked that the Motor Pump is capable of obtaining the following speeds:

2 minutes at 2500 rpm (4400 rpm for "brushless" Motor Pump with built-in electronics) 2 minutes at 1700 rpm (3000 rpm for "brushless" Motor Pump with built-in electronics) 4 minutes at 2800 rpm (5000 rpm for "brushless" Motor Pump with built-in electronics)

PHASE L: 30 minutes extended water heating and washing


It's possible to extend this heating and washing phase to 30 minutes, setting the Programs Selector to P5. This is confirmed by the washing LED changing to 1 Hz flashing light. The LED flashes 3 times, with 3 seconds pauses and repeats.


It's possible to extend this heating and washing phase to 30 minutes, by pushing once the Programs Key (or P1 key). It's confirmed by 2 LEDs that start flashing.

PHASE M


All LEDs are turned ON with fixed light (DIGIT displays SC) and it's activated a Drain Phase, until pressostat's tripping to "empty tank" condition plus 15 second. Should the Drain Phase last longer than 2 minutes, the trouble is warned through the fast flashing of the Programs LEDs (DIGIT displays E3), together with a buzzing sound. Self-diagnosis is halted.

PHASE N

The LED of the current Washing Phase now

flashes at 1 Hz for 5 seconds, then it turns to fixed light until the Programs Selector is moved back to (0) Reset. After this, the Dishwasher is resetted to the first use conditions.

Should an ERROR be present in memory, the LED flashes at 4 Hz and the buzzer sounds.


All Programs LEDs flash together for 5 seconds and the Dishwasher is resetted to the first use conditions.

Should an ERROR be present in memory, the LED flashes at 4 Hz and the buzzer sounds. (DIGIT displays the ERROR Code).

END OF SELF-DIAGNOSTIC CHECKING ROUTINE


CODE

ERROR

PROBABLE REASON

EFFECT

SUGGESTED CHECKS


E2


Water faucet is closed.


The water load was not completed; the pressostat has not tripped within the limit time of 3 minutes and the liters counter has not counted more than 20 impulses.


It's carried out a drain phase, until "empty thank" pressostat condition + 15 seconds. The error is displayed.


Check and open the water faucet.

Too low water pressure (range is from 0.8 to 8

Bar).

Faulty solenoid valve. Faulty wiring.

Faulty connectors.


E3


Missing water drain.


The drain phase was not completed within the designed limit time of 3 minutes.


The washing cycle is halted and the error is displayed.

Clogged filter.

Faulty drain pump. Faulty pressostat.

Bent/clogged drain hose.

Faulty wiring. Faulty connectors.


E4


Intervention of the anti-flood protection device.


The solenoid valve is deactivated by the "MIPS" Water Block device, by- passing the power module.

The error is displayed, once the signal from the "MIPS" lasts for a longer time than 15 seconds.


The washing cycle is halted and the error is displayed.


Any water leak.

Check the functionality of the Water Block safety and of the "MIPS" device. Faulty wiring.

Faulty connectors.


E5


Troubles with the NTC Temperature Reading Probe.


The NTC Water Temperature Sensor is short circuited, faulty insulation to ground or out of calibration (it measures values out of the designed range from 0°C to 95°C, for a longer time than 15 seconds.


The Washing Cycle is halted and the error is displayed.


Faulty NTC Probe. Faulty wiring. Faulty connectors.


E6


Error while reading the Power Module's Eeprom.


The Power Module is not programmed or it's faulty.


The Dishwasher is not working at all. The error is displayed.


Try to reprogram the Power Module with the MEM Unit. If the error persists, replace the Power Module.


E7


Wrong output data from the Washing Motor Pump.

No communication

between the Power Module and the electronic board of the Motor Pump.


The Washing Cycle is halted and the error is displayed.


Check the Wiring and all related Connectors.


The Power Module is not receiving any signal from the Motor Pump's Tachometric Dynamo.


Faulty Tachometric Dynamo.

Faulty Wiring. Faulty Connectors.


CODE

ERROR

PROBABLE REASON

EFFECT

SUGGESTED CHECKS


E8


Missing Water Heating.

After 20 minutes from the beginning of the Water heating, the temperature of water is still lower than 26° C. The temperature of water was not increased of 10° C, starting from 26°C.


The Dishwasher carries out the Washing Cycle with cold water. The error is displayed at the end of the Washing Cycle.


Presence of residual Foam- Faulty Heating Element. Faulty Pressostat.

Faulty Safety Pressostatic Microswitch.

Faulty Wiring.


E9


Troubles wit the Turbidity Sensor.

The Power Module is not receiving any signal from the Turbidity Sensor. The check of the Turbidity Sensor is performed during the first water load, in the beginning of the Washing Cycle.


This error is stored inside the Power Module's Eeprom, but it's not displayed. The washing cycle is performed without the savings allowed by the Turbidity Sensor.


Faulty Turbidity Sensor. Faulty Wiring.

Faulty Connectors.

If excessive foam should be present in tank, carry out

some rinses using for this

the Cold Pre-wash.


E10

Ea


Defective Programs Selector.


The Programs Selector is open or short circuited.

It's not possible to start any Washing Cycle, nor it's possible to activate the Self-Diagnostic Checking Routine.


Faulty Programs Selector. Faulty Wiring.

Faulty Connectors.


E12

Ec


Jammed rotor of the motor pump.


This error is displayed after 3 unsuccessful attempts of making rotate the rotor of the "brushless" motor pump.


The rotor of the motor pump is mechanically blocked.


Disassemble the motor pump and remove any foreign object from the pump's coil. In case of jammed rotor's bearings, replace the motor pump.


E14

Ee


Error found in one or more of the components related to the Water Heating.


Being the Pressostat tripped to the "full tank" contact and being the Heater's relay on the Power Module opened, the Power Module must receive a phase signal. Should it receive a neutral signal, this could be due to two wrong conditions: opened Pressostatic Safety Microswitch or shorted relay. In such a case, water is loaded until a maximum of 2 liters. If still the neutral signal is received, the related error is memorized.


The Washing Cycle is carried out, but if the trouble persists an error will be displayed.


In case of faulty (opened) Pressostatic Safety Microswitch the error will be E8.


In case of short circuited Heater's Relay the displayed error will be Ei.


Faulty Pressostatic Safety Microswitch.

Faulty Heating Element. Faulty Wiring.

Faulty Connectors.

Faulty Power Module (the Heater's Relay is short circuited – contacts glued).


E15

Ef


Trouble with the Liters Counter.

At the end of a water

load, the Pressostat correctly trips to the "full

tank" contact, but the

Liters Counter has counted less than 20 impulses (for 3 times).


The Washing Cycle is halted and the error is displayed.


Faulty Liters Counter. Faulty Wiring.

Faulty Connectors.


CODE

ERROR

PROBABLE REASON

EFFECT

SUGGESTED CHECKS


E16

Eh


The Pressostatic Safety Microswitch is always closed.

Pressostat is to "full tank" and the Heater's relay is opened. The Power Module has a phase feedback from the Heating Element for a longer time than 5 seconds.


The error is stored in the Eeprom's memory, but it's not displayed.


Faulty Pressostatic Safety Microswitch.

Faulty Wiring. Faulty Connectors.


E17

Ei


Trouble with the Heating Element's relay on the Power Module.


The Water Heating Element is not fed for more than 10 seconds in sequence, when it should be fed because it's a phase of heating. In normal conditions in this phase the relay should be closed and neutral should be received by the Power Module. If a phase signal is received, this means the relay is opened. This error is displayed also whenever the Water Temperature should exceed the 85° C (relay's contacts glued).

If the trouble is due to

Relay's contacts always opened, the error is memorized in the Power Module's Eeprom but it's not displayed.

If the trouble is due to Relay's Contacts always closed (glued), the Motor Pump is deactivated, a drain phase is carried out, the Washing Cycle is halted and the error is displayed.

Should this error be found 4 times in sequence, the Dishwasher is halted, the error displayed and no command is accepted anymore.


Faulty Power Module.


E18

El


Wrong Water Level in tank.

The Pressostat does not trip to the "full tank" condition for 2 times in sequence, even if 2 liters of water were loaded. The standards Water Load is not completed within the limit time of 4 minutes.

The Liters Counter continues emitting

impulses, even if more

than 7 liters of water were loaded.

During the phase of Heating, the Pressostat

resets to the "empty

tank" condition: in such a case, water is added 0.5 lt. per time, until a maximum of 2 liters but the Pressostat stays tripped to the "empty tank" condition.


The Washing Cycle is halted and the error is displayed.


Faulty Fill Hose.

Faulty Pressostat, Air Trap Chamber, Pressostat's

Hose.

Faulty Solenoid Valve for Water Load.

Heavy Water Leakage.