ELECTROLUX ENV 06 Service manual

SERVICE MANUAL

DRYERS

I - 33080 PORCIA /PN (ITALY)

Fax: + 39 0434 394096

Edition: 2006-10 25

Publication No.

599 38 46-21

Condenser dryer with

electronic control system

ENV 06

Stylings

TC2 – TC3 – TC4 – TC6

Production:

PLY – Siewierz (PL)

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INDICE

Purpose of this Manual............................................................................................................................... 4

2 IMPORTANT .............................................................................................................................................. 4

2.1 Installation............................................................................................................................................. 4

3 GENERAL CHARACTERISTICS............................................................................................................... 5

3.1 Technical data ...................................................................................................................................... 5

3.2 Electronic boards..................................................................................................................................5

4 CONTROL PANEL..................................................................................................................................... 6

4.1 Stylings................................................................................................................................................. 6

4.2 Programme selector ............................................................................................................................. 6

4.3 Buttons.................................................................................................................................................. 7

4.3.1 Buttons on stylings with and without LCD.................................................................................... 7

4.4 Symbols on stylings with LCD.............................................................................................................. 8

4.5 Humidity level (on some models) ......................................................................................................... 9

4.6 Child protection (on some models) ................................................................................................9

4.7 Delicate ½ power (on some models) ............................................................................................. 9

4.8 No buzzer button ......................................................................................................................... 10

4.9 Delayed start button .................................................................................................................... 11

4.10 “START / PAUSE” button............................................................................................................... 11

4.11 Adjusting the level of conductivity (on some models)....................................................................12

4.11.1 Procedure................................................................................................................................... 12

4.12 Warning LEDs................................................................................................................................13

5 Description of operation of the appliance................................................................................................. 14

5.1 Operation of a cycle............................................................................................................................ 14

5.2 Operation in PAUSE mode................................................................................................................. 14

5.3 Operation in DELAYED START mode ............................................................................................... 15

5.4 Power failure....................................................................................................................................... 15

6 STRUCTURAL AND FUNCTIONAL CHARACTERISTICS ..................................................................... 16

6.1 Drying circuit....................................................................................................................................... 16

6.2 Structural characteristics .................................................................................................................... 17

6.3 Drum................................................................................................................................................... 18

6.4 Air seals and drum shaft supports...................................................................................................... 18

6.5 Hydraulic circuit (versions with canister in upper section).................................................................. 19

6.6 Drum rotation...................................................................................................................................... 19

7 ELECTRICAL COMPONENTS ................................................................................................................ 20

7.1 EDR2000 Electronic control ............................................................................................................... 20

7.1.1 Electronic board functions.......................................................................................................... 20

7.1.2 General structure of board memory........................................................................................... 21

7.2 Conductimetric sensor........................................................................................................................ 22

7.3 Terminal block with incorporated suppressor.....................................................................................22

7.4 Heater unit.......................................................................................................................................... 23

7.5 NTC sensor......................................................................................................................................... 23

7.6 Motor................................................................................................................................................... 24

7.7 Canister filling pipe (models with canister in upper section) .............................................................. 24

7.8 Door interlock...................................................................................................................................... 25

8 ELECTRICAL CIRCUIT............................................................................................................................ 26

9 DIAGNOSTICS SYSTEM......................................................................................................................... 27

9.1 Access to diagnostics......................................................................................................................... 27

9.2 Exiting the diagnostics system ........................................................................................................... 28

9.3 Selector positions for diagnostics on appliances with styling TC2 – TC3 – TC4 ............................... 29

9.4 Selector positions for diagnostics on appliances with styling TC6.................................................... 31

10 ALARMS............................................................................................................................................. 32

10.1 Displaying the alarms to the user................................................................................................... 32

10.1.1 Alarm display during normal operation...................................................................................... 32

10.2 Reading the alarm codes............................................................................................................... 32

10.2.1 Displaying the alarm code on models TC2 – TC3..................................................................... 32

10.2.2 Displaying the alarm code on models TC4 – TC6..................................................................... 32

10.3 Cancelling the last alarm memorized.............................................................................................33

10.4 Notes concerning certain alarm codes........................................................................................... 33

10.5 Table of alarms............................................................................................................................... 34

11 NO ACCESS TO DIAGNOSTICS PROGRAMME .............................................................................37

11.1 No LEDs on the display board light................................................................................................ 37

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Some of the LEDs on the display board light................................................................................. 38

11.2

12 ACCESSIBILITY TO COMPONENTS................................................................................................ 39

12.1 Door................................................................................................................................................ 39

12.1.1 Door ...........................................................................................................................................39

12.1.2 Fluff filter fitted inside door......................................................................................................... 39

12.1.3 Fluff filter support ....................................................................................................................... 39

12.1.4 Lower fluff filter........................................................................................................................... 39

12.1.5 Drum light (if featured)............................................................................................................... 39

12.2 Work top......................................................................................................................................... 40

12.2.1 Front brush of conductimetric sensor ........................................................................................40

12.2.2 Canister...................................................................................................................................... 40

12.2.3 Control panel support and Control panel................................................................................... 41

12.2.4 Main electronic board................................................................................................................. 42

12.2.5 Selector pin................................................................................................................................ 42

12.2.6 Selector knob............................................................................................................................. 42

12.2.7 Button springing......................................................................................................................... 42

12.2.8 Button and visor unit on models TC2......................................................................................... 42

12.3 Removal of both cover and rear panel gives access to:................................................................ 43

12.3.1 Heater unit.................................................................................................................................. 43

12.3.2 Removal of the left-hand side panel gives access to: ............................................................... 44

12.3.3 Floating switch ........................................................................................................................... 44

12.3.4 Float........................................................................................................................................... 45

12.3.5 Pump.......................................................................................................................................... 45

12.3.6 Door interlock............................................................................................................................. 46

12.4 Removal of the right-hand side panel gives access to:.................................................................. 47

12.4.1 Condensatore motore................................................................................................................ 47

12.4.2 NTC Sensor ............................................................................................................................... 48

12.4.3 Rear air duct cover (hot air circulation)...................................................................................... 48

12.4.4 Rear air duct cover (cold air circulation).................................................................................... 48

12.4.5 Drum rotation motor................................................................................................................... 49

12.5 Removal of the front panel gives access to:.................................................................................. 50

12.5.1 Capacitor (Heat exchanger)....................................................................................................... 50

12.5.2 Front flap.................................................................................................................................... 50

12.5.3 Plinth.......................................................................................................................................... 51

12.5.4 Door microswitch ....................................................................................................................... 51

12.6 Removal of the rear panel gives access to:................................................................................... 52

12.6.1 Rear brush (conductimetric sensor)........................................................................................... 52

12.6.2 Rear panel.................................................................................................................................. 52

12.6.3 Drive belt.................................................................................................................................... 52

12.6.4 Drum ..........................................................................................................................................52

12.6.5 Duct............................................................................................................................................ 53

12.6.6 Duct rollers................................................................................................................................. 53

12.6.7 Front and rear seals................................................................................................................... 53

13 REVERSIBILITY OF THE DOOR.......................................................................................................54

14 FINAL TESTING OF DOOR CLOSURE............................................................................................. 56

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1 Purpose of this Manual

The purpose of this Service Manual is to provide service engineers who already have the basic knowledge necessary to repair dryers with information concerning condenser dryers with electronic control systems ENV 06 with anti-crease system CRM produced in the factory of Siewierz (Poland).

The control system features two PCBs: a main one featuring an integrated selector and LCD display, supplied already mounted and tested by the building factory and a control board of the CRM system.

This Service Manual describes the following aspects:

• General characteristics

• Control panel and drying programmes

• Technical characteristics

• Accessibility

• Diagnostics guide

2 IMPORTANT

Ö Repairs to electrical appliances must be carried out only by qualified service engineers.

WARNING

Ö Before touching internal components, always remove the plug from the power socket.

2.1 Installation

Ö The appliance must be installed on a perfectly level surface in order to ensure that the condensed water

flows correctly into the tank.

Ö The feet must NOT be removed. The gap between the bottom of the dryer and the floor is essential to

prevent overheating.

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3 GENERAL CHARACTERISTICS

3.1 Technical data

 Height:

Dimensions of appliance

Power supply No. pushbuttons

No. LEDs

Type of display Buzzer Serial port

Programme selector Drying system

Humidity control Motor Power of heater unit Temperature control Capacity of canister Canister fill pump

 Width:  Depth:  Volt:  Hz:

 7⇒ (TC2) 6⇒ (TC3) 5⇒ (TC5) 3⇒ (TC6)  TC2 ⇒ 3 + 1 bicolour on start button (red green)  TC3 ⇒ 9 + 1 bicolour on start button (red green)  TC4 ⇒ 14 + 1 bicolour on start button (red green)  TC6 ⇒ 8 + 1 bicolour on start button (red green)  LCD on TC2 – TC3 models  Buzzer incorporated in the PCB  DAAS-EAP protocol up to 230400 baud  TC2 – TC3 – TC4 ⇒ 15 positions  TC6 ⇒ 21 positions timer 25 temperometric  Condensation of humidity by heat exchanger  Conductimetric sensor  Single-phase asynchronous motor with capacitor  Version 220-240V 2200 W 1400 W + 800 W  NTC sensor  Condensation tank 4l approx.  Synchronous motor

3.2 Electronic boards

The electronic control system consists of a main PCB having an integrated selector and also a LCD display (in some models) supplied already mounted and tested by the building factory.

Main PCB

TC2

85 cm 60 cm 58 cm 220-240 50/60

With ON/OFF switch integrated

TC3

TC4 / TC6

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4 CONTROL PANEL

4.1 Stylings

TC2

With LCD

TC3

With LED

TC4

TC6

4.2 Programme selector

The 15-position programme selector onTC2 – TC3 – TC4 models and 21/25 positions on TC6 models (with incorporated ON/OFF switch) is built into the board. The symbols represent the different possibilities of drying the various fabrics COTTON SYNTHETICS SILK and WOOL. All positions can be configured depending on the model.

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4.3 Buttons

4.3.1 Buttons on stylings with and without LCD

TC2

2 1

TC3

TC4

1. Configurable button

2. Configurable button

3. Configurable button

4. Configurable button

5. Configurable button

6. START/PAUSE button

7. Delayed start button

8. LCD

9. Programme selector

TC6

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4.4 Symbols on stylings with LCD

The various icons and writings represented on the LCD display are displ ayed depending on the programme and on the programme phase being executed.

Delayed start

Drying phase

Cooling phase

Anti-crease phase

Child protection (key lock)

Delicate

Buzzer

Time-to-end / Alarm code

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4.5 Humidity level (on some models)

By pushing this button it is possible to select one of the three different final drying levels of the programme represented by the following symbols:

• MIN (the time varies depending on the programme)

• MED (the programme is prolonged by 3 minutes)

• MAX (the programme is prolonged by 6 minutes)

4.6 Child protection (on some models)

By pushing simultaneously for 5 seconds the buttons

4 and 5 on TC2 models 3 and 4 on TC3 models

the child protection is activated, all buttons are disabled and no modification is allowed. To deactivate this protection, push the same buttons again.

4.7 Delicate ½ power (on some models)

The dryer features a heating unit which consists of two heating elements, and according to the versions the powers are different. Pressing once the button, the electronic control excludes the less powerful branch of the heating unit and simultaneously the LED lights up to indicate that the option has been selected; pressing it again, the LED switches off to indicate that the option has been deactivated and the previously excluded branch will be powered again during the cycle execution.

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4.8 No buzzer button

Option to be selected when the dryer is in selection mode (set-up). Press this button to exclude the buzzer: the exclusion is signalled by the switching on of the LED or of the icon, depending on the models. To reactivate the option, press the button again.

Even if the buzzer is excluded, the alarm acoustic signalling remains active.

Exclusion of the buzzer (not only for the affected cycle)

Selection to be made during the selection phase (set-up):

On TC2 models push buttons 2 and 3 simultaneously for five seconds: the icon representing the buzzer will light up and a beep will be emitted.

On TC3 models push buttons 2 and 3 simultaneously for five seconds: the LED representing the buzzer will light up and a beep will be emitted.

On TC4 models push buttons 1 and 2 simultaneously for five seconds: the LED representing the buzzer will light up and a beep will be emitted.

On TC6 models push buttons 1 and 2 simultaneously for five seconds and a beep will be emitted.

To reactivate the buzzer, push the key combination above described again till the buzzer emits a “Beep”.

Attention: on TC6 models no acoustic signal will be emitted.

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4.9 Delayed start button

Pressing this button it is possible to select, during the programme selection phase, a delayed start. On TC2 and TC3 models, the time varies up to 12 hours; the time is displayed in the Display. Every time the button is pressed, the time displayed increases:

Ö For the first two hours, the step is about half an hour Ö Later, the step is one hour Ö To cancel the delay, move the selector by one

position or press the button till the display is reset.

On TC5 models the time varies till max. 9 hours. Push the button till the relative pilot lamp of the chosen delay lights up.

This option must be selected in all models after selecting the programme and before pushing START/PAUSE.

4.10 “START / PAUSE” button

 Start When a drying programme is selected with the selector, the icons of the three phases (drying, cooling, anti crease) light up and the LED START/PAUSE flashes. After having selected the options, press this button to start the cycle; the relative LED remains lit.

 Pause If a drying cycle is being executed, pressing the START/PAUSE button, the dryer interrupts the cycle and is in PAUSE mode; the relative LED flashes. Pressing the START/PAUSE button, the drying cycle starts from the point at which it was interrupted.

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4.11 Adjusting the level of conductivity (on some models)

The conductivity of the water used to wash the fabrics varies from zone to zone. The conductimetric sen sor is calibrated to a standard value: any major variations in the level of conductivity may affect the final drying result (i.e. the washing may be too dry or too humid):

These variations are more noticeable in the "slightly damp" or "iron-ready" cycles; the "cupboard dry cycles are almost entirely unaffected by variations in conductivity.

The sensitivity of the conductimetric sensor can be adjusted according to the conductivity of the water.

4.11.1 Procedure

• To access adjustment mode:

1. Turn the programme selector to switch on the

appliance.

2. In selection mode (set-up), simultaneously

press buttons 3 (Delicate) and 6 (start/pause).

On TC2 and TC3 models

Hold the buttons down till “C0” appears on the first 2 digits and the buzzer sounds (about 5 seconds).

• Adjusting the level of conductivity:

Press the 6 button sequentially (start/pause): the level of conductivity is indicated by the lighting of the horizontal hyphens of the last digit.

On TC5 models

Hold the buttons down till the pilot lamps placed above the buttons start to flash and one of the pilot lamps that indicate the drying phase remains on:

• Adjusting the level of conductivity: Push the START/PAUSE button sequentially: the

conductivity level will be indicated by the pilot lamps of the single phases.

• Memorizing the new setting:

1. Simultaneously press buttons 3 (Delicate)

and 6 (start/pause).

2. Hold the buttons down until the drying cycle

reappears on the display and the buzzer sounds (about 5 seconds).

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Display

Normally, the appliance is factory-set to the highest level; however, certain models may be configured differently.

Your local water supply company can give you information concern i ng the conductivity of the water in your area.

Conductivity

Low < 300

Medium 300 - 600

High > 600

Approximate value (μS/cm)

4.12 Warning LEDs

L1. Heat exchanger cleaning (condenser): it lights up after

80 drying cycles. To reset the cycle counter (for this function), open the door with the appliance on, extract the heat exchanger, clean it and recluse the door.

L2. Filter cleaning: it lights up when the dryer has

terminated the cycle to warn the user to clean the fluff filter.

L3. Tank full: it lights up durino the drying cycle if the

electronic circuit detects the closing of the floating microswitch and at the end of the cycle to warn the user to empty the tank.

L4. Start/pause: it lights up with green flashing light when

the cycle is in pause; it lights up with green fixed light when the cycle is running regularly. If there is an alarm three beeps will be emitted that will be repeated after some seconds and the LED becomes red with flashing light.

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5 Description of operation of the appliance

When the selector is turned from OFF position to a drying programme, the icons relative to the drying phases light up and the START/PAUSE LED flashes with green light. During this phase the various options can be entered, and the corresponding LEDs will light. The lower right display shows the maximum time of drying cycle. If an option that is incompatible with the selected cycle is entered, the Buzzer sounds, the Display shows Err while the LEDs flash.

Selecting one or more options the Display shows an increase or decrease of the time. If the position of the selector is changed after choosing the options, but before pressing START/PAUSE button, the options will be cancelled.

5.1 Operation of a cycle

A drying cycle starts after a programme has been selected using the selector, one option (if necessary) has been selected and the START/PAUSE pushbutton has been pressed. The LED corresponding to the START/PAUSE button remains lit with green light and, at the same time, the LED corresponding to the phase currently being performed lights and the display shows the maximum drying time.

The drying cycle consists of the following phases:

• DRYING

If the cycle is automatic, its duration will be the time necessary to remove the humidity until the desired degree of final humidity is reached (maximum cycle time 180 minutes at full power and 240 minutes at 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.

• ANTI-CREASE

The duration of the anti-crease cycle is 30 minutes. No modifications to the programmes can be entered after the drying programme has started. If the position of the selector is changed, the green LED of the START / PAUSE button starts flashing, the

buzzer sounds to warn the user that an incorrect operation has been attempted and the displa y shows <<Err>>. If any button is pressed, the green LED of the START / PAUSE button starts flashing, the buzzer sounds to warn the user that an incorrect operation has been attempted and the display shows <<Err>>. The options can be selected only after selecting a drying programme at the beginning of the cycle, or during a cycle after pressing the START/PAUSE button. To cancel a drying cycle, it is necessary to turn the programme selector to OFF.

5.2 Operation in PAUSE mode

If START/PAUSE is pressed while a drying cycle is being performed, the dryer interrupts the current cycle, the green LED of the START / PAUSE button flashes and the display shows time to end. If the selector is turned, the buzzer warns the user of the error. In this situation, only certain options can be modified, see table of OPTIONS. If the button relative to an option that cannot be selected is pressed, the buzzer sounds to warn the user of the error and the display shows <<Err>>. When START/PAUSE is pressed again, the drying cycle resumes from the point at which it was interrupted.

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5.3 Operation in DELAYED START mode

After selecting a drying cycle, press this button to enter the delayed start option (the selected time is indicated on the display). Every time the button is pressed the delay time increases, (for the first 2 hours the time increases of half an hour, then of an hour), the maximum time that can be selected is 20 hours. To cancel this option move the selector of one position or press the button till the option is cancelled on the display. The start of the cycle is always determined by pressing the START/PAUSE button.

5.4 Power failure

The table below shows how the dryer behaves in the event of a power failure during a drying cycle.

Before the power failure After power is restored

Set-up Set-up

Drying cycle Pause

Cycle paused Pause

Anti-crease phase End of cycle

Delayed-start cycle Delayed-start cycle paused

Delayed start cycle paused Delayed start cycle paused

End of cycle End of cycle

"Canister full" alarm "Canister full" alarm

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6 STRUCTURAL AND FUNCTIONAL CHARACTERISTICS

6.1 Drying circuit

Version with canister in upper section Version with canister in lower section

There are two air circuits inside the dryer:

 the first is a warm-air circuit, which is sealed within the appliance  the second is an open cold-air circuit, which circulates air from the ambient through certain sections of

the appliance.

In the sealed warm-air circuit The fan (1), ducts the air through a heat exchanger (5), and then to the heater unit (2). The heater unit heats the air, which is then ducted into the drum through the perforations in the rear flange of the drum. The warm, dry air passes through the wash load, which is agitated by the rotation of the drum, and removes the humidity from the fabrics; the air, which is now warm and humid, passes then through the front aperture of the drum via the fluff filter (3) and the lower filter (4), then the air is ducted by the fan (1) to the heat exchanger (5), where the humidity is condensed. The air coming from the heat exchanger is now dry and the cycle continues as described above.

The cold-air circuit 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 which condenses the humidity contained in the warm air.

The condensation water (9): ¾ In versions with the canister in the upper section

canister (8). When the canister is full, any overflow is collected in the canister support and returned through a tube (not shown in the figure) into the sump (7). This causes the float (9) to rise, thus actioning the microswitch (10).

¾ In versions with the canister in the lower section

canister (8); when the canister is full, the water level in the sump (7) rises. This causes the float (9) to rise, thus actioning the microswitch (10).

The electronic control system detects the closure of the microswitch, cuts off the power to the appliance an d switches on a LED warning the user that the canister is full.

The tank capacity is about 4 lt., which is sufficient for one drying cycle.

(the air circulates in one side of the appliance) is not sealed.

, the air circulates inside the appliance:

cross inside the heat exchanger (5), which results in a thermal exchange

, which forms in the heat exchanger, is collected in a sump (7) which contains a float

, a pump (11) ducts the water from the sump (7) to the

, the water flows by gravity from the sump (7) into the

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6.2 Structural characteristics

Version with canister in upper section Version with canister in lower section

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 panels 14 – Upper tank 15 – Tank support 16 – Duct 17 – Front panel 18 – Base 19 – Heat exchanger 20 – Panel 21 – Plinth 22 – Front fluff filter

The front panel and the side panels are in enamelled sheet metal; the rear panel is in zinc-plated sheet metal. The panels are secured to the base by self-tapping screws. The shaped carboran base houses the main components.

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 20 – Panel 21 – Plinth

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