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Electrolux EDR1000NEW, Service Manual

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Electrolux EDR1000NEW Service Manual Download Page 22

 

SOI/DT 2003-12 dmm 

 22/50  

599 36 20-08 

7.4  Heater unit 

 

 
 
 
 

 

1 -   Filament heating element 
2 -   Ceramic supports 
3 -   Sheet metal casing 
4 -   TH1 Safety thermostat 
 

(automatic reset) 

5 -   TH2 Safety thermostat 

 
 
 
 
 
The heater unit consists of two wire heating elements with different powers. The two heating elements are 
fitted to ceramic supports, and the entire assembly is housed in a sheet metal casing. 
Two safety thermostats (normally closed) are positioned to one side of the casing. 

§

 

TH1 (automatic reset) (4) intervenes at a temperature of 92±3°C, and disconnects both heating 
elements. 

§

 

Thermostat TH2 (5) intervenes at 160°C; when the contact opens, it remains open, permanently 
disconnecting all the electrical components in the appliance.  

 
The heater unit is powered vi a two relays (RL1 and RL2) fitted to the board. 
 

Heater unit versions 

Type 

Total power (-2+ 8%): W 

Rated voltage: V

 

2400 

240 

2000 

230 

2000 

240 

2200 

240 

Branch A 

Power (-2+ 8%): W 

Resistance: 

Ω

 

1400 

36 

1400 

33 

1400 

36 

1400 

36 

Branch B 

Power (-2+ 8%): W 

Resistance: 

Ω

 

1000 

51 

600 

78 

600 

85 

800 

63 

 

IMPORTANT: In the event of a thermostat failure, the entire heater unit must be replaced! 

 

7.5  NTC sensor 

 
The NTC sensor is fitted to the hot air fan duct. This sensor consists of a resistor contained in a metallic 
capsule. Its resistance decreases as the temperature increases. 
The electronic circuit reads the resistance (which varies with the temperature inside the dryer); when this 
resistance falls below a certain value, the heater unit is switched off. As the air  cools, the resistance 
increases; when it reaches a given value, the electronic circuit re-connects the heater unit to the power 
supply. This occurs each time the temperature inside the dryer exceeds a given value, which varies 
according to the drying cycle that has been selected. 
 
 

 

1 – NTC resistor 

 

2 – Metallic capsule 

 

3 – Terminals 

 

4 – Plastic casing 

 

 
 

RESISTANCE 

TEMPERATURE 

(ºC) 

Rated value 

Maximum value  

Minimum value  

20 
60 
80 

6050 
1250 

640 

6335 
1278 

620 

5765 
1222 

660 

Summary of Contents for EDR1000NEW

Page 1: ...RS ELECTROLUX ZANUSSI S p A Spares Operations Italy Corso Lino Zanussi 30 Publication no I 33080 PORCIA PN ITALY 599 36 20 08 Fax 39 0434 394096 Edition 2003 12 04 EN Condenser dryer with electronic control system EDR1000NEW Nexus4 Production ZP Porcia IT ...

Page 2: ...SOI DT 2003 12 dmm 2 50 599 36 20 08 ...

Page 3: ...EMO mode 14 5 1 Selecting DEMO mode 14 5 2 Exiting DEMO mode 14 6 STRUCTURAL AND FUNCTIONAL CHARACTERISTICS 15 6 1 Drying circuit 15 6 2 Structural characteristics 16 6 3 Drum 17 6 4 Air seals and drum shaft supports 17 6 4 1 Rear air seal 17 6 4 2 Rear drum support 17 6 4 3 Front drum support and air seal 17 6 4 4 Lower drum support 17 6 5 Hydraulic circuit versions with canister in upper section...

Page 4: ...rush of conductimetric sensor 38 13 2 2 Control panel support assembly 39 13 2 3 Control panel 39 13 2 4 Electronic board 39 13 2 5 Programme selector rear section 39 13 2 6 Pushbuttons 39 13 2 7 Canister container models with canister in upper section 40 13 3 Removal of the cover and rear panel gives access to 40 13 3 1 Heater unit 40 13 4 Removal of the left hand side panel gives access to 41 13...

Page 5: ...conductimetric condenser models as well as vented dryers This Service Manual describes the following aspects General characteristics Control panel and drying programmes Technical characteristics Accessibility Diagnostics guide 2 IMPORTANT 2 1 Safety ð Repairs to electrical appliances must be effected only by qualified service engineers ð Before touching internal components always remove the plug f...

Page 6: ...ton version 4 options start pause 3 options start pause No LEDs 5 pushbutton version 4 pushbutton version 13 10 Buzzer buzzer incorporated in the PCB Serial port DAAS EAP protocol up to 38400 baud Programme selector 16 positions with main switch incorporated in the PCB Drying system condensation of humidity by heat exchanger Humidity control conductimetric sensor Motor single phase asynchronous mo...

Page 7: ... L6 Cooling L7 Anti crease End of cycle L8 Filter cleaning L9 Canister full L10 Condenser cleaning 4 2 Five pushbutton control panel As well as the five pushbuttons the control panel features thirteen LEDs and a programme selector The options can be selected only after selecting a drying cycle using the selector In this situation the phase LEDs light and LED L7 start pause flashes When an option i...

Page 8: ...pressed again the LED switches off to indicate that the option has been disactivated and the heating element switches on again during the cycle 4 3 4 DELAYED START pushbutton The DELAYED START option must be selected before pressing START PAUSE This option enables the user to delay the start of the drying cycle The delayed start function consists of three combinations depending on the configuratio...

Page 9: ...and at the END of the CYCLE to remind the user to empty the canister Condenser cleaning lights after 80 drying cycles 4 4 Programme selector The 16 position programme selector with incorporated ON OFF switch is built into the board The first nine positions are common to all versions i e always select the same programmes programmes 10 to 14 vary according to the configuration of the appliance SELEC...

Page 10: ...AL X X X X SLIGHTLY DAMP X X X IRON READY X X X COTTON MACHINE IRONING X X X EXTRA DRY X X X CUPBOARD DRY X X X SYNTHETIC IRON READY X X X 90 min X X X 60 min X X X TIME 30 min X X X EASY IRON X X X DRY CLEANING X X X BABY X X X MIXED LOADS X X WOOL X X X Compatibility with programmes COOLING X DELAYED START X X X DELICATE DRYING half power X X QUICK X X Compatibility with options NO BUZZER X X X ...

Page 11: ...buttons 1 and 3 for the four button version ð buttons 2 and 4 for the five button version 3 Hold the buttons down until the LEDs above each begin to flash the buzzer sounds and one of the LEDs indicating the drying phase lights approximately 5 seconds Adjusting the level of conductivity ð Press the START PAUSE button sequentially the level of conductivity is indicated by the phase LEDs which light...

Page 12: ...mum cycle time is 180 minutes for full power and 240 minutes for half power If the cycle is timer controlled the duration will be the time selected by the user COOLING For timer controlled cycles the maximum duration of the cooling phase is 10 minutes for automatic cycles the duration depends on the temperature inside the drum i e may be shorter ANTI CREASE The duration of the anti crease cycle is...

Page 13: ...standby mode until the delay time has elapsed after which the cycle will start automatically If the selector is turned during the delayed start countdown or if an option is selected during this time the phase LEDs flash three times and the buzzer sounds to warn the user of the error If the START PAUSE button is pressed during this drying cycle the dryer goes to STANDBY mode when START PAUSE is pre...

Page 14: ... drum is not controlled in any way 5 1 Selecting DEMO mode 1 The appliance must be switched off 2 Press START PAUSE and any of the option buttons simultaneously 3 Holding the two buttons down switch the appliance on by turning the programme selector knob two positions clockwise 4 Hold the two buttons down until the LEDs begin to flash about 5 seconds and the buzzer sounds 5 Select the various opti...

Page 15: ... of the appliance is not sealed The fan 6 draws in air through an air intake on the rear of the appliance and ducts the air to the heat exchanger 5 cooling it after which the air is expelled on the opposite side of the heat exchanger dissipating inside the appliance and exiting from the venting grille in the plinth The warm and cold air circuits cross inside the heat exchanger 5 which results in a...

Page 16: ...nel 18 Base 19 Heat exchanger 20 Panel 21 Plinth 22 Front fluff filter 1 Work top 2 Control panel support 3 Control panel 4 Fluff filter 5 Fluff filter support 6 Door seal 7 Door internal frame 8 Door external frame 9 Rear panel cover protection 10 Rear panel cover 11 Rear panel 12 Cross member 13 Side panel 14 Duct 15 Front panel 16 Lower fluff filter 17 Base 18 Heat exchanger 19 Lower canister 2...

Page 17: ...secured by screws to the internal wall of the drum The various elements which make up the drum are in sheet steel The rear drum shaft is fitted to the rear flange using eyelet rivets 6 4 Air seals and drum shaft supports 6 4 1 Rear air seal 1 Rear seal fitted to rear panel 2 Drum 3 Rear panel 6 4 2 Rear drum support 4 Anti clutching washer 5 Fixing ring Benzing 6 Rear panel 7 Drum spindle 8 Suppor...

Page 18: ...m is rotated by a belt 4 which is driven by the pulley of the drum motor 1 fitted to the base on the bearing shield there is a belt tensioner 3 which has the function of increasing the winding angle of the belt to the drum and works in conjunction with the belt tensioner spring 2 Bidirectional operation of the drum rotation is determined by the electronic board which inverts the motor power direct...

Page 19: ...tton 6 LED diffuser 7 1 1 Electronic board functions ð The electronic board powers the main components motor pump for dryers with canister in the upper section heater and door interlock ð The board also controls the door interlock the temperature of the air inside the dryer using an NTC sensor the level of humidity of the washing using a conductimetric sensor and the level of condensation water in...

Page 20: ...e cancelled each time the appliance is disconnected by switching off or in the event of a power failure The contents can be read using a computer connected via a DAAS interface 7 1 5 EEPROM The EEPROM contains data of various types ð Power failure and machine status i e the information necessary to resume operation of the appliance after a power failure ð Configuration of the drying cycle this fil...

Page 21: ...eparated by an insulating strip and therefore the impedance between the front and rear shells to which the sensors are connected is infinite when the drum is empty The impedance varies according to the wash load the type of fabric and the degree of humidity The impedance is between about 1MΩ and 25MΩ This value is converted into an oscillation of between about 260Hz and 0Hz when processed by the e...

Page 22: ...00 240 2200 240 Branch A Power 2 8 W Resistance Ω 1400 36 1400 33 1400 36 1400 36 Branch B Power 2 8 W Resistance Ω 1000 51 600 78 600 85 800 63 IMPORTANT In the event of a thermostat failure the entire heater unit must be replaced 7 5 NTC sensor The NTC sensor is fitted to the hot air fan duct This sensor consists of a resistor contained in a metallic capsule Its resistance decreases as the tempe...

Page 23: ...mines the direction of rotation and a triac 7 7 Door interlock The door interlock is an electromechanical device which powers the electrical loads only when the door is correctly closed and the programme selector knob is turned ON OFF closed The interlock features a child safety device so that in case of necessity the door can be opened by pressing from inside the appliance When the door is open t...

Page 24: ...re powered The heater unit 4 is powered via two relays RL1 and RL2 which power the two branches of the heating element separately at different powers If the DELICATE DRYING option is selected only the more powerful branch is powered 1400W The motor is powered via a TRIAC TY1 which is piloted by the microprocessor Reversal of the direction of rotation to unroll the washing in the drum is controlled...

Page 25: ...nt diagnostics testing If an alarm should be displayed turn the programme selector to the first position to exit the alarm situation then continue the testing cycle if the alarm is not repeated Ø In order to check for correct operation of the floating switch and the pump models with canister in the upper section the sump is filled with approximately 0 7 litres of water Ø For correct control of the...

Page 26: ...nches of the heater unit Ø Motor triac for ventilation Door closed Max time 10 min Heater unit full power 7 Ø Conductimetric sensor This check has a duration of 4 sec 1 sec to create the short circuit The phase warning LEDs flash during this period If the result is correct at the end the LEDs remain lit if not the LEDs flash and alarm E32 is displayed Door closed Short circuit between the two drum...

Page 27: ...switches off the appliance 10 1 1 Alarm display during normal operation The system displays the family of alarms to the user by a repeated flashing sequence of the ANTI CREASE END OF CYCLE LED 0 4 seconds on 0 4 seconds off with a 2 5 second pause between sequences The buzzer emits a series of bips in synchronization with the flashing of the LED For example in the case of alarm E53 the cycle would...

Page 28: ...n the family category N B The first letter of the alarm code E error is not displayed since it is common to all codes The families of alarm codes are expressed in hexadecimal Therefore ð A is represented by 10 flashes ð B is represented by 11 flashes ð ð F is represented by 15 flashes Configuration errors are displayed by the flashing of all the LEDs user interface not configured 10 2 2 Example of...

Page 29: ...ycle After effecting repairs to the appliance to check whether it is repeated during testing 1 Access diagnostics mode and turn the programme selector knob to the eleventh position alarm reading 2 Press START PAUSEand any one of the option buttons simultaneously 3 Hold down the START PAUSE and option buttons for about 5 seconds 10 5 Notes concerning certain alarm codes Configuration alarm E93 When...

Page 30: ... motor overheating cut out Wiring faulty Electronic board faulty Power to the heater unit and reversal of the direction of rotation are interrupted If the problem does not re occur the alarm is memorized and the cycle continues If the fault persists after several attempts to supply power about 35 min alarm E51 is generated OFF E53 Motor triac sensing circuit faulty Electronic board faulty Cycle in...

Page 31: ...n incorrect Electronic board faulty Cycle interrupted OFF E95 Communication error between microprocessor and EEPROM Electronic board faulty Cycle interrupted OFF E97 Incongruency between selector and cycles Configuration error Cycle interrupted OFF EB1 Power frequency to appliance out of limits Problems with the power supply incorrect interference Electronic board faulty Cycle interrupted If a sta...

Page 32: ...ls J8 2 and N Is the circuit closed Remove the connector from the heater unit and measure the closure of the thermostat Is the circuit across terminals 3 5 of the heater unit closed Identify the cause of the interruption in the operation of the fan causing the thermostat to intervene and eliminate the cause Replace the heater unit and perform the diagnostics cycle Replace repair the knob or spindl...

Page 33: ...e cycle will be terminated The values shown are measured inside the drum The difference in temperature between the position of the sensor and the drum is 5 C Motor movement The motor movement column contains four fields each of which specifies a time as represented in the diagram below P1 pause before direct rotation DIR direct rotation of the motor P2 pause between direct rotation and reversal of...

Page 34: ...ch the heater unit switches off and the moment at which the motor is paused before reversing the direction of rotation Example HEATING ELEMENT 1 1400W HEATING ELEMENT 2 1000 600W Function D1 D2 D3 D4 Function D1 D2 D3 D4 SYNC ALL 1 1 2 2 SYNC DIR 2 2 Pump The last column refers to the pump only for dryers with the canister in the upper section Ø OFF in this configuration the pump is never activate...

Page 35: ...humidity is 6 75 2 240 2 15 SYNC DIR 1 1 NO HEAT Level If selected humidity is 8 Cooling All other cycles 10 40 2 300 2 15 NO HEAT NO HEAT OFF Pump All cycles 10 No movement NO HEAT NO HEAT ON Anti crease All cycles 30 30 5 NO HEAT NO HEAT OFF End of cycle All cycles No movement NO HEAT NO HEAT 12 3 EASY IRON CYCLE No options selected HEATING ELEMENTS Motor movements 1400W 1000W 600W Phase Maximum...

Page 36: ... 2 300 2 15 NO HEAT NO HEAT OFF Pump All cycles 10 No movement NO HEAT NO HEAT ON Anti crease All cycles 30 30 5 NO HEAT NO HEAT OFF End of cycle All cycles No movement NO HEAT NO HEAT 12 5 DELICATES cycles No options selected Heating elements Motor movements 1400W 1000W 600W Phase Degree of humidity Maximum time Temp C P1 DIR P2 INV Function D1 D2 D3 D4 Function D1 D2 D3 D4 Pump Drying 1 CUPBOARD...

Page 37: ... elements Motor movements 1400W 1000W 600W Phase Maximum time Temp C P1 DIR P2 INV Function D1 D2 D3 D4 Function D1 D2 D3 D4 Pump Drying 1 1 5 90 5 15 NO HEAT NO HEAT OFF Drying 2 4 45 5 90 5 15 SYNC DIR 1 1 NO HEAT OFF Drying 3 1 45 5 90 5 15 SYNC DIR 1 1 SYNC DIR 2 2 OFF Cooling 8 26 5 90 5 15 NO HEAT NO HEAT OFF Pump 10 No movement NO HEAT NO HEAT ON Anti crease 30 30 5 NO HEAT NO HEAT OFF End ...

Page 38: ...nside the drum as follows a Remove the two screws which secure the bulb cover and remove the cover b Unscrew the bulb from the bulb holder c When replacing the cover ensure that the sealing ring is correctly positioned in its seat N B Use only bulbs supplied as original spare parts the code is shown in the parts list for each model 13 2 Work top The following components can be accessed from the wo...

Page 39: ... which secures the control panel and remove the control panel N B When replacing reposition the light diffusers on the control panel slightly raise the canister support and guide the pushbuttons carefully into the control panel 13 2 4 Electronic board i Press the anchor clip on the connector cover lift and remove from the board casing j Detach the wiring connectors from the electronic board k Remo...

Page 40: ...he front d Remove the screw which secures the side panel to the cross member after removing the canister When replacing the side panel replace the screws in their original positions otherwise the continuity of the earth circuit will be broken e Remove the screws which secure the side panel to the rear panel lift and remove The terminal block for the heater unit is located inside the microswitch su...

Page 41: ... canister in upper section the floating microswitch and the float c Remove the two tubes from their couplings the red tube which fills the canister and the transparent tube through which water overflow is ducted back to the sump when the canister is full d Remove the screw 1 which secures the microswitch support and insert a screwdriver into the two anchor tabs which secure it to the sump e Lift b...

Page 42: ...move the pump from its seat it is necessary to disconnect the wiring connectors remove the screw and release the anchor tab shown by the arrow which secures the pump to the sump Remove the pump k When re assembling the pump the float and the canister microswitch repeat the procedure described above in reverse sequence When replacing the microswitch support insert a screwdriver into the gap shown b...

Page 43: ...ing The NTC sensor a Remove the work top see above b Remove the screws which secure the right hand side panel to the cross member and remove the panel c When replacing the side panel replace the screws in their original position otherwise the continuity of the earth circuit will be broken d Remove the screws which secure the side panel to the rear panel e Lift and remove the panel 13 6 1 Motor cap...

Page 44: ...remove 13 6 5 Drum rotation motor l After removing the covers from the two ducts it is possible to access the drum rotation motor m Remove the belt tensioner spring n Remove the screws which secure the front and rear motor support brackets rotate upwards and remove o Rotate the entire motor block motor two fans towards the interior of the dryer lift and remove after removing the drive belt from th...

Page 45: ...or tabs are correctly positioned in their seats and only then tighten the screws e Check that the panel latch when closed actions the lever of the microbox otherwise the dryer will not be powered 13 8 Removal of the plinth gives access to The plinth The microbox a To remove the plinth remove the screw which secures the plinth to the front panel move it towards the interior of the appliance and rem...

Page 46: ... Disconnect the terminal block from the heater unit f Remove all the screws which secure the rear panel to the base and to the cross members a screw beneath the heater unit secures the rear panel to the base 13 9 3 Drive belt a Remove the work top b Remove the side panels c Remove the rear panel cover d Remove the rear panel e Remove the motor group 13 9 4 Drum a Remove the work top b Remove the s...

Page 47: ...ar panel cover c Remove the rear panel d Remove the drum e The rear seal can be simply pulled away from the ring fitted to the rear panel f Slide the front seal 1 from its seat Notes for replacement of the rear drum seal 1 Position of the join in the seal 2 Position of the compensation hole 3 After replacing the rear drum seal apply lubricant uniformly over the entire inner felt surface using 1 gr...

Page 48: ...g 11 Insert the general wiring harness into the support s positioned on the duct fig C and position them parallel to the front panel so that they cannot come into contact with the drum Attach to the anchor using a wire tie 12 Insert the door lock connector between the drum and the canister container then remove it from the position shown by the arrow fig D 1 13 Insert it beneath the front brush co...

Page 49: ...ing cap fig G 8 24 Fit the door latch fig G 9 25 Screw the hinges into position fig G 6 26 Position the door on the opposite side of the appliance and screw the hinges into position fig H 10 27 Replace the left and right hand side panels replacing the screws in their original positions otherwise the continuity of the earth circuit will be broken 28 Replace the work top 29 On completion of this pro...

Page 50: ...y system as follows c Connect the dynamometer 2 to the loop d Pull the instrument in a d irection perpendicular to the plane of the door The dynamometer should indicate a value of between a maximum of 51 NEWTON equivalent to 5 1 Kg and a minimum of 38 2 NEWTON equivalent to 3 8 Kg N B The door locking system is designed to ensure that if a child should inadvertently remain inside the appliance the...

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