Merloni EVO3 Service Manual Download Page 4

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Merloni Elettrodomestici

DISHWASHER EVO3

Service manual

03-05-20/0

4-54

Language Issue/Edition

Page

FILL LINE AND OVERFLOW SYSTEM

5.1

Turbine fill functioning

5.2

Normal turbine fill analysis

5.3

Possible fill failures

5.4

Acquastop alarm

5.5

Bit 100 diagram

5.6

Replacing the Bit 100 card

5.7

Connection

5.8

Turbidity sensor

5.9

Use of rinse aid

5.10

Failures and possible causes

5.11

Duo wash

NEW DRYING SYSTEM WITH TURBO DRY (EVO 3)

SALT INDICATOR LIGHT

EVO3 TABLE OF ALARMS

TEST AND AUTOTEST CYCLES

9.1

To run the Test/Autotest programme follow the steps below:

9.2

RESET CODE

9.3

Test and Autotest specifications

CORRECT DISHWASHER FUNCTIONING

Summary of Contents for EVO3

Page 1: ...Merloni Elettrodomestici EN 03 05 20 01 1 54 Language Issue Edition Page Service manual DISHWASHER EVO3 ...

Page 2: ...Merloni Elettrodomestici DISHWASHER EVO3 Service manual EN 03 05 20 0 2 54 Language Issue Edition Page ...

Page 3: ...OF EVO3 CYCLES 12 3 1 Resetting a wash cycle 12 3 2 Standard cycle 12 3 3 Glassware cycle 12 3 4 Duo Wash cycle 13 3 5 Auto Wash cycle 13 3 6 Super wash cycle 15 3 7 Eco cycle 15 3 8 Rapid cycle 16 3 9 Special guest cycle 16 3 10 Soak cycle 16 3 11 Special Filter Cleaning cycle 17 4 COMPLETE WATER LINE DIAGRAM 20 4 1 Composition 20 4 2 Fill line functioning 23 4 3 Wash line functioning 24 4 4 Drai...

Page 4: ... 5 Bit 100 diagram 28 5 6 Replacing the Bit 100 card 30 5 7 Connection 33 5 8 Turbidity sensor 37 5 9 Use of rinse aid 37 5 10 Failures and possible causes 38 5 11 Duo wash 38 6 NEW DRYING SYSTEM WITH TURBO DRY EVO 3 39 7 SALT INDICATOR LIGHT 41 8 EVO3 TABLE OF ALARMS 46 9 TEST AND AUTOTEST CYCLES 49 9 1 To run the Test Autotest programme follow the steps below 49 9 2 RESET CODE 50 9 3 Test and Au...

Page 5: ... Fill solenoid 20 Water meter turbine 20 Air break chamber 20 Water softener 20 Wash pump 1 2 load solenoid 21 Wash pump duo wash motor 22 Concealed heating element 22 Symmetrical microfilter 24 LED Card 32 LCD Card 32 Turbidity sensor 37 New dryer chamber 40 High pressure sensor 43 TR open heating element 44 Dispenser 45 ...

Page 6: ...RNAL FEATURES 1 1 Programme selector N B A DIWA 126 timer has been fitted in all machines with the 4 LEDs Programme type reset Indicator lights cycle status ON OFF light Salt indicator light Programme selector ON OFF button Programme selector delayed start button Cycle status and delayed start indicator lights ...

Page 7: ...anguage Issue Edition Page 1 2 LED Salt indicator light Half load button Half load indicator light Programme indicator light Programme selector Start Reset button Cycle status and delayed start indicator lights Programme selector delayed start button On Off light On Off button ...

Page 8: ...4 45 cm Nothing White X Stainless steel N Black INDESIT D 6 3 T YES Dishwashers External features Width Performances Safety features Colour Nothing overflow T AcquaStop 6 60 cm 4 45 cm Nothing White YES Silver Delayed start indicator light Programme indicator light AUTO DUO WASH Programme selector Stand by button Start Reset button Cycle status indicator light Leakage indicator light Multifunction...

Page 9: ...ted The wash cycle is the stage in which food particles are removed through the action of the enzymatic detergent and temperatures reached The rinse cycles eliminate any remaining dirt from plates as well as preparing them for drying by dispensing the rinse aid and taking the temperature over 60 C 1 Chart 1 shows the temperatures reached throughout the cycle and when the heating element switches o...

Page 10: ...0 0 10 54 Language Issue Edition Page 2 Chart 2 shows the activation of all motors a motor pump b drain pump c fan installed in models with LCD readout and graphics display pumps time min motor pump required wattage drain pump watts fan watts activation watts Chart 2 ...

Page 11: ...ce manual EN 03 05 20 0 11 54 Language Issue Edition Page 3 Chart 3 shows the activation of the dispenser fill regeneration and water meter solenoid valves fill water fill valve fill turbine regeneration valve dispenser time min activation Chart 3 ...

Page 12: ... the P key for 5 seconds and 4 beeps will sound 3 2 Standard cycle 3 3 Glassware cycle 10 min 26 min 25 min 10 min including wash 1st pre rinse 50 C wash 70 C rinse Drying Total litres filled 16 l Total time 70 min Energy consumption 1 25 KWh Total litres filled 16 l Total time 96 min Energy consumption 1 16 KWh 26 min 12 min 24 min 31 min 52 C wash 1st rinse 50 C 2nd rinse 65 C Drying ...

Page 13: ...e dishwasher always carries out the 1st pre rinse This is necessary to clear the tub of any residues from previous cycles especially rinse aid The sensor measures the soil level at the start of the second stage If the soil reading is medium high the electronic control orders a second pre rinse if the soil reading is low the control skips the second pre rinse and starts the main wash cycle Dependin...

Page 14: ...SE 245 1 10 mins NO 40 C 8 mins 63 C 20 mins 2 10 mins NO 45 C 11 mins 63 C 20 mins 3 10 mins NO 45 C 20 mins 63 C 20 mins 4 10 mins NO 48 C 22 mins 63 C 20 mins 5 10 mins NO 48 C 22 mins 63 C 25 mins 6 10 mins 6 48 C 22 mins 63 C 25 mins 7 10 mins 10 mins 48 C 27 mins 63 C 25 mins 8 10 mins 16 mins 48 C 27 mins 63 C 25 mins 9 10 mins 16 mins 48 C 27 mins 63 C 30 mins 0 from 10 to 12 10 mins 16 mi...

Page 15: ...cle Total litres filled 23 l Total time 120 min Energy consumption 1 4 KWh 36 min 10 min 5 min 28 min 65 C wash 2 Rinse 3 Rinse 66 C Drying 30 min 1 Rinse 14 min 40 C pre rinse Total litres filled 16 l Total time 120 min Energy consumption 1 05 KWh 18 min 36 min 24 min 32 min 2 Pre rinse 63 C rinse Drying 48 C wash 1st Pre rinse 10 min ...

Page 16: ...me 25 min no Extra Dry optional Energy consumption 0 4 KWh With extra dry the dishwasher hot rinses at 63 C Time extended to 30 secs New consumption 0 8 KWh 10 min Rinse Drying with extradry 40 C wash 15 min Total litres filled 6 l Total time 35 min Energy consumption 0 7 KWh 10 min Drying 67 C rinse 25 min Total litres filled 6 l Total time 35 min Energy consumption 0 7 KWh 10 min Cold rinse ...

Page 17: ...cts stay reset for at least 5 seconds Cycle start Drain 1st fill 2 5l filled in cycle via the turbine Check pressure switch 2 litres filled via the TURBINE between rinses Motor pump ON Check pressure switch for 2 seconds Fill until pressure switch contacts close max 6 litres for 2 mins Pressure switch FILTER CLEANING PROGRAMME Water level sensor filter cleaning alarm AL 058 see table of alarms Con...

Page 18: ...pe rinse 10 1st wash impulses 16 2nd wash impulses 24 Wash sump Rinse to 70 C 1 If the sensor contacts open for at least 5 secs after point 1 the rinse is repeated If the sensor contacts open during the 2nd rinse for at least 5 secs after point 1 the dishwasher shows the filter cleaning alarm If the sensor contacts open for at least 5 secs after point 1 the rinse is repeated If the sensor contacts...

Page 19: ...ase 3 filter cleaning during rinse 1 Rinse to 70 C Jog type rinse 10 mins Drain and fill 6 5l If the sensor contacts open for at least 5 secs after point 1 the rinse is repeated If the sensor contacts open during the 2nd rinse for at least 5 secs after point 1 the dishwasher shows the filter cleaning alarm ...

Page 20: ...1 Composition The dishwasher s water line can be split into three units depending on the function performed i e fill line including components involved in water feed the following devices a fill solenoid b water meter turbine c air break chamber d water softener Fill solenoid Water meter turbine Air break chamber Water softener a b c d ...

Page 21: ...stici DISHWASHER EVO3 Service manual EN 03 05 20 0 21 54 Language Issue Edition Page wash line including components involved in wash water feed the following devices a wash motor pump WASH PUMP WASH PUMP 1 2 LOAD SOLENOID ...

Page 22: ...ER EVO3 Service manual EN 03 05 20 0 22 54 Language Issue Edition Page b lower spray arm c concealed heating element turbidity sensor where applicable WASH PUMP DUO WASH MOTOR CONCEALED HEATING ELEMENT TURBIDITY SENSOR WHERE INSTALLED ...

Page 23: ...ter required during each dishwasher cycle is filled in different stages a start fill fill solenoid active b start count litre impulses turbine c 2 litre between rinse level reached with motor off signalled by water pressure switch to electronic card d in cycle level reached 4 litres required for effective performance during cycle with motor on signalled by the turbine to the electronic card ...

Page 24: ...ozzles generates the mechanical force required to turn them 4 4 Drain line functioning The water used by the dishwasher during the various wash stages is drained by the drain pump which is fed from the sump The drain pump stays on until the pressure switch detects that the water level in the tub has reached 70mm pressure switch reset level approx 700cc plus an extra minute to empty the sump 4 5 Sy...

Page 25: ...pressure is too low Is the motor connected correctly If not connect it correctly Is the motor working If the problem is caused by the motor replace it The dishwasher isn t draining Check the following possible causes Is the drain pump connected correctly If not connect it correctly Is the drain pump clogged Tooth picks bones etc can make draining difficult or almost impossible Dismantle the drain ...

Page 26: ...fill water For each wash programme and tub status the pressure switch controls the volume of water inside the wash compartment and signals if the heating element can be turned on The turbine also guarantees the maximum level of water that can enter the wash compartment thereby functioning as an overflow device too Water can not overflow from the overflow top because the holes have been closed Give...

Page 27: ...r cleaning cycle will be run if the switch doesn t close it means the filters are clogged or the switch is broken The filter cleaning procedure is a sequence of water fill and drain stages and jog wash cycles that removes any blockage from filters enabling the pressure switch to once again feel the water level 5 3 Possible fill failures Possible failures that may be encountered during water fill a...

Page 28: ...fferences of this model with respect to previous dishwashers is that in machines with the Stand By button i e dishwashers with LCD readout or graphics display the electronic card is live when the machine is in Stand By Disconnect the plug from the mains to cut off the voltage supply to the card and the dishwasher Dishwashers with selector switches and LEDs have an On Off button instead when the ma...

Page 29: ...y input 5V 1 mA warning not isolated LED wash delay timer LED output 5V 1 mA warning not isolated NTC on door input 48K at 25 C this value is measured if the temperature sensor is not cabled high pressure input high pressure sensor to increase clean filter algorithm 230V 0 5mA Triac dispenser solenoid Triac fill solenoid Wash programme memory Triac regeneration solenoid Triac drain pump Triac Duo ...

Page 30: ... To prevent this from starting In dishwashers with selector switches switch the machine on with the selector in the RESET position You can now use your dishwasher For dishwashers with LEDs LCD and Graphics Display switch the machine on and reset it using the RESET button You can now use your dishwasher Heating element or fan actuation relay Power supply Sensing elements for Door Pressure Switch Hi...

Page 31: ...Merloni Elettrodomestici DISHWASHER EVO3 Service manual EN 03 05 20 0 31 54 Language Issue Edition Page ...

Page 32: ...e manual EN 03 05 20 0 32 54 Language Issue Edition Page Examples of cabling between Bit100 and the interface card LED Card LCD Card The diagram on the next page will help you to understand the individual functions of the actuators listed previously ...

Page 33: ... 4l m 230V power supply Turbine 217 impulses s Drain pump connection Synchronous motor 230V power supply With the drain pump and the wash pump connected in series the drain pump can be activated a lower voltages than the mains supply FILL SOLENOID VA A J006 Input turbine J006 TURBINE Q1 TRIAC NEUTRAL LINE Q1 TRIAC NEUTRAL DRAIN PUMP WASH PUMP LINE ...

Page 34: ... Page Regeneration solenoid connection Wash pump and duo wash pump connection Q2 activates the pump if Q1 is OFF Q3 controls the duo wash where installed or the half load solenoid REGENERATION SOLENOID Q1 TRIAC NEUTRAL LINE DUO WASH MOTOR WASH PUMP DRAIN PUMP NEUTRAL LINE Q1 TRIAC Q2 TRIAC Q3 TRIAC ...

Page 35: ...IAGRAM WASH PUMP RED AUX STARTER PRIMARY STARTER BLUE BLACK AMP F 180908 TERMINAL BOARD FROM CONNECTION SIDE CONNECTION DIAGRAM DUO WASH MOTOR BLACK RED BLUE PRIMARY STARTER AUX STARTER WHITE BROWN BLACK MOTORIZED CONTROL VALVE GEAR MOTOR M S S MOTOR PROTECTION MOTOR PROTECTION SENSING CONDENSOR MOTOR COMMON SENSING ...

Page 36: ... element connection the fan and the heating element have the same relay actuation the heating element is activated when the pressure switch is in full and the fan when the pressure switch is in empty LINE NEUTRAL Q1 TRIAC DIRECTIONAL CONTROL VALVE Detergent rinse aid dispensers LINE NEUTRAL FAN LS1A RELAY SPDT HE FAN 1 PRESSURE SWITCH OPEN FULL 2000W 230V CONCEALED OPEN ...

Page 37: ...l is measured with the wash pump on Depending on the soil level read the machine will alter the cycle by reducing or increasing the cycle times and temperatures of the subsequent stages The sensor distinguishes 10 different soil levels there were 4 in mark2 dishwashers The maximum turbidity level is equivalent to the most intense cycle while the clearest reading ie water corresponds to the shortes...

Page 38: ...may have leaked from the dispenser residues of detergent tablet rinse aid balls Check all electrical connections as well from the sensor up to the timer 5 11 Duo wash The system underlying the duo wash was designed to allow users more flexibility when loading the machine i e half load either in the top or bottom racks The duo wash motor is fitted to the wash pump To be exact the whole system is ba...

Page 39: ...nstalled on LCD models the washing machine adds an extra five minutes of natural ventilation onto the end of the drying cycle taking the temperature 3 C higher than the normal rinse from 63 to 66 C 6 3 POSSIBLE FAILURES Due to assembly imperfections the drain tube may not be connected properly at one end or the other or there may be a hole in it This type of fault would allow water to leak causing...

Page 40: ...SHER EVO3 Service manual EN 03 05 20 0 40 54 Language Issue Edition Page In this instance drying performance would be significantly impaired and the dishes would not be dried NEW DRYER CHAMBER DRY AIR PROCESSED AIR ANY CONDENSATION h ...

Page 41: ...2nd 3rd and 4th cycles for both the 60cm and the 45cm widths Fill the salt container with water and add 1 5 2 kg of salt Salt meter The algorithm in the BIT 100 counts the activation of the regeneration solenoid at the end of each cycle At the end of the 29th cycle the dishwasher fills 600cc of water and turns on the S salt indictor light At the start of the next cycle fill the salt container as f...

Page 42: ...been added as explained above in the section entitled Salt meter At the first installation the salt meter must be filled to the top with water first and then salt With the salt container you can adapt the quantity of salt used to the hardness of the water As a result if the arrow on the neck of the container is set to less salt will be consumed and vice versa if it is set to the sign The meter wil...

Page 43: ...r inlet coupling which in normal operating conditions reads 0 26bars The sensor consists of a microswitch connected to a membrane that is activated on contact with water When the pressure in the dishwater goes below the level required to wash dishes sufficiently below 0 15 bars as a result perhaps of clogged filters the membrane disables the microswitch which then sends a signal to the timer The S...

Page 44: ...eel tub 7 2 ITR safety thermostat A safety thermostat is used to protect the dishwasher or more specifically the heating element The purpose of this device is to disconnect the electrical supply to the heating element should the temperature exceed the safe limit There are two different ITRs one on the open heating element which can be seen between the bars of the element On the concealed heating e...

Page 45: ...ash compartment The rinse aid to be dispensed is stored in an adjustable container that fills to the top when the door is FULLY opened When the pump opens gravity causes the rinse aid to fall into the wash compartment Possible failures the dishwasher doesn t dispense rinse aid and therefore the dishes are not dried properly or the rinse aid light won t go off check if there is rinse aid in the con...

Page 46: ...LED Programme 5 TO 04 9 sec Timeout heating water LED 4 LED programme 6 TO 08 60 min Timeout draining LEDs 1 and 2 LEDs programmes 3 and 4 TO 03 4 min Timeout filling LEDs 2 and 3 LEDs programmes 4 and 5 TO 06 1 min 30 sec Clogged filters LEDs 1 and 3 LEDs programmes 3 and 5 TO 05 After filter cleaning cycle fails Software setup LEDs 1 and 4 LEDs 1 and 4 TO 09 1 sec Heating element circuit LEDs 2 ...

Page 47: ...fill alarm If the machine does not detect turbine rotation and the pressure switch contacts close 1 minute and 30 seconds into the drain cycle the fault is signalled It disactivates all water fill cycles and activates the drain pump Clogged filters alarm If the pressure switch contacts do not close after a water fill cycle the filter cleaning programme will be run After serving the pressure switch...

Page 48: ...not calibrated Max time to reach wash temp exceeded 40 minutes 4 6 AL 08 Drain pump faulty cables disconnected or false contact drain pipe blocked timer faulty Max time 4 minutes for drainage exceeded pressure sensor open 1 2 3 4 AL 03 Valve closed inlet SV faulty SV cables disconnected Max time for turbine rotation 3 minutes exceeded or pressure sensor closed 2 3 4 5 AL 06 cables disconnected dra...

Page 49: ...eep will sound the following indicator lights with blink together 3 and 6 for LED models 1 and 4 for selector switch models you can now select either the TEST and AUTOTEST programmes Test programme in selector switch models turn the programme selector round one position and press the P key once the cycle lasts 20 minutes Autotest programme in selector switch models turn the programme selector roun...

Page 50: ...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 TURBINE search duo wash parameters wash top and bottom racks if the timer does not ...

Page 51: ...e duo wash will not work the DW will register an alarm Probable cause of malfunction duo wash module faulty cables inverted closed the duo wash will not work the DW will register an alarm Probable cause of malfunction duo wash module faulty cables inverted 14 Search duo wash parameters wash upper and lower racks 15 Waterheatedto55 C if the heating element fails to heat up or the NTC does not regis...

Page 52: ...the DW will show the water level alarm Probable cause of malfunction pressure switch faulty or cables disconnected inverted 23 5 seconds WASH MOTOR HEATING ELEMENT on 24 10 seconds DIRECTIONAL CONTROL VALVE on 25 10 seconds WASH MOTOR 26 REGENERATION solenoid energized 15 seconds 27 HEATING ELEMENT on 10 seconds 28 DUO WASH on 10 seconds 29 drain O 5 secs if the pressure switch does not open by ma...

Page 53: ...IONING no revolutions lower spray arm38 5 no revolutions upper spray arm20 5 wash compartment low water level Same level as filter removal handle 3 6 litres 3 8 litres Lower rack water pressure 0 26 0 02 bars measured in upper water inlet pipe Upper rack water pressure 0 13 0 02 bar measured in top rack spray arm shaped attachment ...

Page 54: ...954 www Merloni com All parts of this document are the property of Merloni Elettrodomestici S p A All rights reserved The manufacturer will not be held responsible for any error or omissions regarding this manual and all information contained therein It may not be reproduced used or extracted either in full or in part unless authorization has been given in writing or by a contractual clause ...

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