EDW500 / EDW503. Electronic Controls for Dishwashers

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1 EDW500 / EDW503 Electronic Controls for Dishwashers ESSE-N / A.S. October 2004

2 EDW500 - EDW503 EDW500 and EDW503: new entry level electronic controls for dishwashers in the DIVA family Intended to replace electromechanical timers EDW500 : variant for freestanding and built-in DW EDW503 : variant for fully integrated DW Simple single-board electronics Simple microcontroller, hence reduced functionality compared to the other DIVA electronic controls 2

3 EDW500 Features Rotary selector with 6 positions : integrated 2-pole main switch up to 5 programmes Power on LED START/RESET push button and LED Cycle phase LEDs: Wash-Dry-END Salt and rinse aid LEDs On some models only: additional push button and LED for one option ( Delay start or Half load ) LEDs red and green, or all red, depending on model specification 3

4 EDW500 Power On LED Start/ Reset- LED Option LED Wash Dry END Rinse Aid Salt Rotary selector with integrated main switch START/ RESET push button Option push button ( Half load or Delay start ) 4

5 EDW500 : Panel Variant Depending on brand and model, RESET can appear also as PAUSE or CANCEL 5

6 EDW503 Features Separate 2-pole main switch Push button for sequential selection of up to programmes, and of cycle reset Up to 5 programme LEDs: 1 for each programme Function LED (can be combined with Beam-on-Floor) buzzer (deselectable) Salt and rinse aid LEDs On some models only: additional push button and LED for one option ( Delay start or Half load ) Final definition 1 st quarter

7 EDW503 Option LED Programme LEDs Function LED Rinse Aid Salt Main switch Option push button ( Half load or Delay start ) Programme selection (sequential) 7

8 Inputs Programme selector Pressure switch NTC Door switch Reeds for salt and rinse aid Float switch in bottom tray, in series with inlet valve (all DGN models, ZM only with safety hose ) no tachymetric generator 8

9 Loads Heating controlled by relay on PCB Circulation pump controlled by triac: No pulse wash (in absence of tachymetric generator) On models featuring the half-load option, uncontrolledly reduced pump speed is used during dynamic fill when this option is selected Small loads controlled by ACS (AC switches): Inlet valve Detergent and rinse aid dispenser Drain pump Regeneration valve Drying fan possible, but not specified for any model yet 9

10 Circuit Diagram PROGRAMME SELECTOR RINSE AID REED SALT REED HEATING RELAY PRESSURE SWITCH HEATING CIRC. PUMP DRAIN PUMP REGEN. VALVE DOOR SWITCH NTC DETERG. DISPENSER INLET VALVE & FLOAT SWITCH 10

11 Cycle Start EDW500: Rotate programme selector into desired position Press START/RESET push button once EDW503 : Repeatedly press programme selection push button until LED of the desired programme is lit (Sequence begins with the last programme used) Cycle starts approx. 3 sec after closing the door 11

12 RESET after Cycle Start EDW500: Press the START/RESET push button again EDW503 : Press programme selection push button for approx. 3 sec, until reset is confirmed by LEDs Both: automatic reset if door is opened during drying phase (but only after the regeneration phase has ended) for more than 30 sec 12

13 Function LED on EDW503 LED flashing (0.5 sec on, 2 sec OFF) when appliance is switched on with the main switch LED keeps flashing during programme selection LED off after cycle start LED on after cycle end 13

14 Installation Mode EDW500 Before switching on the appliance, press the START/RESET push button, and keep pressed... 14

15 Installation Mode EDW500 Rotate programme selector to position 1 clockwise Keep the START/RESET push button pressed until LEDs Power on and Start/Reset start flashing LED END will start flashing too, the number of flashes indicating the regeneration level setting 15

16 Installation Mode EDW500 Water Hardness Setting While in installation mode, the water hardness setting will be increased by 1 each time the START/RESET push button is pressed (after reaching 10, the count will start at 1 again) The last setting will be stored in memory 16

17 Installation Mode EDW500 Water Hardness Levels Setting mmol/l Water Hardness Range French deg. German deg. Setting indicated by - LED "END" (EDW500) - Function LED (EDW503) Regeneration after* a total water load of approximately: 10L TH dh 10 flashes -- ** 9L TH dh 9 flashes 10 l 8L TH dh 8 flashes 15 l 7L TH dh 7 flashes 20 l 6L TH dh 6 flashes 35 l 5L TH dh 5 flashes 55 l 4L TH dh 4 flashes 70 l 3L TH dh 3 flashes 95 l 2L TH 4 10 dh 2 flashes 130 l 1L below 0.7 below 7 TH below 4 dh 1 flashes 430 l * regeneration is done in the drying phase of the cycle during which this total load was reached ** regeneration is done twice in a cycle: in the first rinse and in the drying phase 17

18 Installation Mode EDW500 Water Hardness Levels In addition to the electronic setting of the water hardness level, it is important to set also the by-pass lever on the water tank: for water hardness levels 1 to 6: setting 0 for DGN, 1 for ZM (factory default) for water hardness levels 7 to 10: setting 1 for DGN, 2 for ZM 18

19 Installation Mode EDW500 Rinse Aid Deactivation After entering the installation mode, rotate programme selector to position 2 clockwise Setting is indicated by LED END flashes once - rinse aid dosage active (default) no flash - rinse aid dosage and LED deactivated Change setting by pressing START/RESET 19

20 Installation Mode EDW500 Rinse Aid Deactivation On some models, rinse aid deactivation will not be possible (always refer to user manual) On those models, the water hardness setting will also be shown in position 2 (and 3, 4, 5) 20

21 Exit Installation Mode To exit installation mode, switch off the appliance If not ended manually, the installation mode will end automatically 60 sec after the last user interface activation in either case, last settings will be stored 21

22 EDW500 - EDW503 Service Mode Functions Read alarm memory (3 alarms) single actuator selection LED test clear alarm memory Start factory test cycle Other DIVA service mode functions not available on this platform 22

23 Service Mode EDW500 Before switching on the appliance, press the START/RESET push button, and keep pressed... 23

24 Service Mode EDW500 Rotate programme selector to position 5 counterclockwise Keep the START/RESET push button pressed until LEDs Power on and Start/Reset start flashing 24

25 Service Mode EDW500 Read Alarm Memory & Single Actuator Selection After entering Service Mode, leave programme selector in position 5 Press the START/RESET pushbutton once the most recent alarm (if any) will be shown by the number of flashes of the LED END 25

26 Service Mode EDW500 Read Alarm Memory & Single Actuator Selection Repeatedly pressing the START/RESET push button will make the sequence continue in the known way: 2. 2nd alarm, if any 3. 3rd alarm, if any 4. Regeneration valve 5. Drain pump 6. Inlet valve fill to level / no fill if level already reached 7. Heating only if level reached 8. Circulation pump 9. Detergent and rinse aid dispenser 10. Drying fan (if present) 26

27 Service Mode EDW500 Single Actuator Selection During single actuator selection steps 4 to 10 the LED END stays permanently lit 27

28 Alarms Function Alarm code in memory Alarm indication * for user for service Fault detection logic Remarks Water inlet i10 once once Switch point of pressure switch is not reached within: - 90 sec during the static fill phase - 60 sec during refill phases 45 sec drain after fault is detected Drain i20 twice twice Aqua Control / Overflow protection i30 3 times 3 times Switch-back point of pressure switch is not reached within 120 sec drain + 5 sec pause sec drain Inlet valve circuit open due to float switch (or any other reason) Heating i times Temperature rise after 3 min less than 1K NTC failure (short or open circuit) i times Voltage drop over NTC outside of working limits heating phase skipped heating phase skipped Fill time fault if times Total fill time limit exceeded * Alarms are shown: on EDW500: by number of flashes of LED "END" on EDW503: by number of flashes of Function LED and by beeps 28

29 Service Mode EDW500 LED Test & Clear Alarm Memory After entering Service Mode, rotate programme selector to position 4 Press the START/RESET pushbutton once, all LEDs will start flashing for integrity check, alarm memory is cleared 29

30 Service Mode EDW500 Start Factory Test Cycle After entering Service Mode, rotate programme selector to position 3 Press the START/RESET pushbutton once, factory test cycle will start Reset function and LED behaviour like in user cycles 30

31 Exit Service Mode To exit service mode, switch off the appliance If not ended manually, the service mode will end automatically 60 sec after the last user interface activation 31