Electrolux ENV06 User manual

SERVICE MANUAL
TUMBLE DRYERS
©Electrolux Home Products Italy S.p.A.
Corso Lino Zanussi, 30
Publication
number
I - 33080 Porcia – PN - 599 70 66 79
Fax: + 39 0434 394096
SOI
Edition: 03-2008 Rev 0.0
EN
Condenser dryer
with heat pump
ENV06 AEG HP
Versions
with and without LCD

2008-03 ADL 1/58 599 70 66 79

2008-03 ADL 2/58 599 70 66 79
TABLE OF CONTENTS
1Introduction................................................................................................................................................. 4
1.1 Purpose of this manual......................................................................................................................... 4
1.2 Caution ................................................................................................................................................. 4
1.3 Installation............................................................................................................................................. 4
2Technical characteristics ............................................................................................................................ 5
2.1 Technical data ...................................................................................................................................... 5
2.2 Circuit boards........................................................................................................................................ 5
3Control panel .............................................................................................................................................. 6
3.1 Stylings ................................................................................................................................................. 6
3.2 Programme selector ............................................................................................................................. 6
3.3 Keys...................................................................................................................................................... 7
3.4 Symbols on models with LCD............................................................................................................... 8
3.5 Child safety function ............................................................................................................................. 9
3.6 Delicate fabrics (½ power).................................................................................................................... 9
3.7 Adjusting the spin speed ...................................................................................................................... 9
3.8 DELAYED-START key – models with LCD........................................................................................ 10
3.9 DELAYED-START key – models without LCD................................................................................... 10
3.9.1 Disactivate buzzer...................................................................................................................... 11
3.9.2 Disactivate buzzer (not only for the selected cycle) .................................................................. 11
3.10 START / PAUSE key...................................................................................................................... 11
3.11 Adjusting the level of conductivity .................................................................................................. 12
3.11.1 Procedure................................................................................................................................... 12
3.11.2 Display ....................................................................................................................................... 13
3.12 Warning LEDs and symbols........................................................................................................... 14
4Operation of the appliance ....................................................................................................................... 15
4.1 Operation of a cycle............................................................................................................................ 15
4.2 Operation in PAUSE mode................................................................................................................. 15
4.3 Operation in DELAYED START mode ............................................................................................... 16
4.4 Power failure....................................................................................................................................... 16
5Structural characteristics .......................................................................................................................... 17
5.1 Heat pump in drying circuit: operating principles................................................................................ 17
5.2 Structural components........................................................................................................................ 19
5.3 Drum ................................................................................................................................................... 20
5.4 Air seal and drum spindle support ...................................................................................................... 20
5.5 Hydraulic circuit .................................................................................................................................. 21
5.6 Drum rotation: principles..................................................................................................................... 21
6Electrical components .............................................................................................................................. 22
6.1 Electronic control system.................................................................................................................... 22
6.1.1 Main circuit board: functions ...................................................................................................... 22
6.1.2 Electronic control system memory: general structure................................................................ 23
6.2 Conductimetric sensor........................................................................................................................ 24
6.3 Terminal block with suppressor .......................................................................................................... 24
6.4 Compressor ........................................................................................................................................ 25
6.5 PTC motor protector ........................................................................................................................... 25
6.6 Motor compressor capacitor ............................................................................................................... 25
6.7 Fan cooling compressor ..................................................................................................................... 26
6.8 Drum motor......................................................................................................................................... 26
6.9 Drum motor capacitor ......................................................................................................................... 26
6.10 Canister fill pump............................................................................................................................ 27
6.11 Air circulation fan............................................................................................................................ 27
6.12 Fan motor capacitor ....................................................................................................................... 27
6.13 NTC sensor .................................................................................................................................... 28
6.14 Door switch..................................................................................................................................... 28
6.15 Door interlock ................................................................................................................................. 28
7Circuit diagram ......................................................................................................................................... 29
8Diagnostics system................................................................................................................................... 30

2008-03 ADL 3/58 599 70 66 79
8.1 Access to diagnostics ......................................................................................................................... 30
8.2 Exiting the diagnostics system ........................................................................................................... 31
8.3 Selector positions for diagnostics (conductimetric appliances).......................................................... 32
9Alarms ...................................................................................................................................................... 34
9.1 Displaying the last alarm to the user .................................................................................................. 34
9.2 Displaying alarms during normal operation ........................................................................................ 34
9.3 Reading the alarms............................................................................................................................. 34
9.3.1 Displaying the alarms: models with LCD ................................................................................... 34
9.3.2 Displaying the alarms: models without LCD .............................................................................. 34
9.3.3 Displaying other alarms ............................................................................................................. 35
9.3.4 Cancelling the last alarm............................................................................................................ 35
9.3.5 Notes concerning alarm conditions E93, EH1, EH2 and EH3 ................................................... 35
9.4 Table of alarms ................................................................................................................................... 36
10 The diagnostics cycle does not start .................................................................................................. 39
10.1 None of the LEDs on the display board lights................................................................................ 39
Some of the LEDs on the display board light............................................................................................... 40
11 Access to components ....................................................................................................................... 41
11.1 Door................................................................................................................................................ 41
11.2 Fluff filter......................................................................................................................................... 41
11.2.1 Fluff filter on door ....................................................................................................................... 41
11.2.2 Lower fluff filter........................................................................................................................... 41
11.2.3 Evaporator fluff filter................................................................................................................... 42
11.2.4 Fluff filter for water from evaporator........................................................................................... 42
11.3 Compressor for fan motor .............................................................................................................. 43
11.4 Door lock ........................................................................................................................................ 43
11.5 Door microswitch............................................................................................................................ 43
11.6 Door lock latch - Door microswitch latch ........................................................................................44
11.7 Drum light bulb ............................................................................................................................... 44
11.8 Canister .......................................................................................................................................... 44
11.9 Work top ......................................................................................................................................... 45
11.10 Control panel/support assembly..................................................................................................... 45
11.11 Main circuit board ........................................................................................................................... 46
11.11.1 Removing the board ..............................................................................................................46
11.11.2 Removing the selector knob spindle ..................................................................................... 46
11.11.3 Removing the selector knob .................................................................................................. 46
11.11.4 Key spring strip ...................................................................................................................... 46
11.12 Side panels..................................................................................................................................... 47
11.13 Water ducts .................................................................................................................................... 47
11.14 Condensation pump / float-actioned switch ................................................................................... 48
11.15 Drum rotation motor ....................................................................................................................... 49
11.16 NTC heat pump circuit.................................................................................................................... 49
11.17 Drum brush..................................................................................................................................... 50
11.18 Rear brush...................................................................................................................................... 50
11.19 Rear air duct................................................................................................................................... 51
11.20 PTC and motor overload cut-out .................................................................................................... 51
11.21 Dismantling the chassis for servicing ............................................................................................. 52
11.22 Air duct ........................................................................................................................................... 53
11.23 Front air seal .................................................................................................................................. 53
11.24 Idle pulleys ..................................................................................................................................... 53
11.25 Rear air seal ................................................................................................................................... 53
12 Checking the efficiency of the heat pump .......................................................................................... 54
12.1 Servicing the heat pump circuit ...................................................................................................... 57
12.1.1 Replacing the compressor ......................................................................................................... 57
12.1.2 Evacuation ................................................................................................................................. 57
12.1.3 Filling.......................................................................................................................................... 57
13 Door reversibility ................................................................................................................................. 58

2008-03 ADL 4/58 599 70 66 79
1 Introduction
1.1 Purpose of this manual
The purpose of this Service Manual is to provide service engineers who already have basic experience in
repairing clothes dryers with additional technical information concerning condenser dryers with electronic
control systems.
The electronic control system consists of a main circuit board with a built-in selector and - on some models -
a liquid-crystal display (LCD). These components are supplied already assembled and tested by the
manufacturer.
This Service Manual describes the following:
Technical characteristics
Control panel
Description of operation
Structural characteristics
Electrical components and circuit diagrams
Diagnostics
Alarms
Accessibility
1.2 Caution
WARNING
•Any repairs or maintenance of electrical appliances must be carried out by qualified
persons only.
•Always remove the plug from the power socket before accessing the internal
components.
1.3 Installation
The appliance must be installed on a perfectly flat, level surface in order to ensure that the condensation
produced during the drying process is ducted correctly to the special canister.
The feet should never be removed. There must always be a space between the bottom panel of the dryer
and the floor in order to prevent possible overheating.
WARNING
If the appliance is laid on its side for maintenance or repairs,
wait for ½ hour before operating it again.

2008-03 ADL 5/58 599 70 66 79
2 Technical characteristics
2.1 Technical data
Dimensions height: width:
depth:
85 cm
60 cm
58 cm
Voltage volts:
Hz:
220-240
50/60
Number of keys varies depending on the model
Number of LEDs varies depending on the model
Type of display panel small LCD on TC2 models
large LCD on TC3 models
Acoustic signalling device built-in buzzer on circuit board
Serial port DAAS-EAP communications protocol up to 230400 baud
Programme selector 11 positions (models without LCD) 15 positions (models with small LCD)
21 positions (models with large LCD)
All models feature a built-
in ON/OFF switch
Drying system condensation of humidity with heat exchanger
Humidity control conductimetric sensor
Motor single-phase asynchronous with capacitor
Heating unit heat pump
Gas for heat pump R134a 270g
Temperature control NTC sensor
Capacity of canister 4 litres approx.
Canister fill pump with synchronous motor
2.2 Circuit boards
The electronic control system consists of a main circuit board with a built-in selector and - on some models -
a liquid-crystal display (LCD). These components are supplied already assembled and tested by the
manufacturer.
The boards shown in the figures below may differ slightly from those actually fitted to the appliance.
Main circuit board
TC2 Without LCD
TC3 With small LCD
TC4 With large LCD

2008-03 ADL 6/58 599 70 66 79
3 Control panel
3.1 Stylings
TC2
Large display
TC3
Small display
With information on display
TC3
Small display
Without information on display
TC4
Without display
3.2 Programme selector
Models without LDC (TC4) are fitted with 11-position programme
selectors. On models with small LCD (TC3), the selector has 15
positions. Large-LCD models (TC2) have 21 positions.
All models feature a built-in ON/OFF switch on the circuit board.
The symbols refer to the various drying cycles that can be selected for
COTTON, SYNTHETIC FABRICS, SILK and WOOL.
All programme positions can be configured depending on the model.

2008-03 ADL 7/58 599 70 66 79
3.3 Keys
1. Configurable key
2. Configurable key
3. Configurable key
4. Configurable key
5. Configurable key
6. START / PAUSE key
7. DELAYED START key
8. LCD
9. Programme selector

2008-03 ADL 8/58 599 70 66 79
3.4 Symbols on models with LCD
Cycle option symbols
Delicate Long anti-crease cycle
Sensitive
Spin speed
Final humidity
Cycle symbols
Iron-ready
Cupboard dry
Light drying
Strong drying
Extra-strong drying
Drying phase
Cooling phase
Anti-crease phase
Alarms
Empty condensation canister
Clean filters
Clean heat exchanger
Child safety function
Buzzer
Timer
Delayed start Time-to-elapse/Alarm code

2008-03 ADL 9/58 599 70 66 79
3.5 Child safety function
For all models: To enable the child safety function,
press keys 3 and 4 simultaneously and hold them
down for 5 seconds. All the keys will be disabled and
no further modifications can be entered.
To deactivate this function, press the same keys
again for 5 seconds.
3.6 Delicate fabrics (½ power)
The dryer is fitted with a heating unit consisting of two heating elements having different power ratings
(which depend on the model).
When this key is pressed once, the electronic control system switches off the low-power branch of the
heating unit, and the corresponding LED lights to indicate that this option has been selected.
If the same key is pressed again, the LED will switch off to show that the option has been deactivated, and
the low-power branch of the heating element will switch on again.
3.7 Adjusting the spin speed
This adjustment procedure tells the electronic
control system that the wash load has been spin-
dried at a certain speed and will therefore have a
certain level of humidity.
In certain programmes, this value modifies the time
required for the final drying phase.
Each time the key is pressed, the spin speed
increases by 200 rpm, from a minimum of 800 rpm
to the maximum speed for the programme selected
(the absolute maximum spin speed is 1,800 rpm).
To reset the spin speed to zero, continue to press
this key until "0" is displayed.

2008-03 ADL 10/58 599 70 66 79
3.8 DELAYED-START key – models with LCD
Press this key during the programme selection
phase (set-up) to select the DELAYED START
function.
On models with LCD, the delayed-start time varies
up to a maximum of 20 hours. The time is shown on
the display.
Each time the key is pressed, the delayed-start time
increases as follows:
•For the first two hours: at intervals of ½ hour.
•After the initial two hours: at intervals of 1 hour.
•To reset the delayed start time, either move the
selector by one position or press the key until the
time on the display returns to zero.
3.9 DELAYED-START key – models without LCD
On models without LCD, the delayed start time
varies up to a maximum of 9 hours.
Press the DELAYED-START key until the LED
corresponding to the desired time lights.

2008-03 ADL 11/58 599 70 66 79
3.9.1 Deactivate buzzer
The buzzer may be deactivated while the dryer is in programme selection (set-up) mode.
Press this key to enable the buzzer. The corresponding LED or symbol will light to indicate that the buzzer is
on. To disable this option, press the same key again.
The buzzer will continue to sound in the event of an alarm even if the normal buzzer function has been
disabled.
3.9.2 Deactivate buzzer (not only for the selected cycle)
This function should be selected during the selection (set-up) phase.
Valid for all models: Press keys 1and 2
simultaneously for 5 seconds. The LED or symbol
corresponding to the buzzer will switch off and a
"BIP" will be heard
To re-activate the buzzer, press the same keys
again until the buzzer again sounds a "BIP".
3.10 START / PAUSE key
Start
When the selector is used to select a drying programme, the symbols for the three phases (drying, cooling
and anti-crease) light and the START/PAUSE LED begins to flash.
After selecting the desired options (if any), press this key to start the cycle. The corresponding LED will
remain lit.
Pause
If a drying cycle is being performed, it can be interrupted by pressing START/PAUSE. The appliance goes
into PAUSE mode and the corresponding LED begins to flash.
Press START/PAUSE to resume the drying cycle from the point at which it was interrupted.

2008-03 ADL 12/58 599 70 66 79
3.11 Adjusting the level of conductivity
The so-called "conductivity" of the water used to wash the fabrics varies in different areas. The conductivity
sensor is calibrated for a standard value, and any significant variations in the level of conductivity may affect
the final drying result (fabrics too dry or too damp).
These variations are especially noticeable in the "slightly damp" and "iron dry" cycles. The "cupboard dry"
cycle is almost unaffected by variations in conductivity.
3.11.1 Procedure
To enter adjustment mode:
1. Turn the programme selector to switch on the
appliance.
2. In selection (set-up) mode, press the following keys
simultaneously:
1and 5in models with large LCD
1and 5in models with small extended LCD
1and 4in models with small LCD and ALARM LEDs
1and 3(START/PAUSE) in models without LCD
3. Hold the keys down until the buzzer sounds (about 5
seconds).
To adjust the level of conductivity:
Press the START/PAUSE key: the level of conductivity is
varied each time the key is pressed. The level is indicated
by the lighting of the LEDs or the horizontal segments of
the final digit.
To store this level in memory:
1. Press the same keys as above.
2. Hold both keys down until the buzzer sounds (about 5
seconds).

2008-03 ADL 13/58 599 70 66 79
3.11.2 Display
Display / LED Level of conductivity Approximate value (µS/CM)
DISPLAY
LED
LOW < 300
DISPLAY
LED
AVERAGE 300 – 600
DISPLAY
LED
HIGH > 600
The appliance is generally factory-set to the average level, though certain models may be configured
differently.
Check with your local Water Board office to determine the level of conductivity of the mains supply in your
area.

2008-03 ADL 14/58 599 70 66 79
3.12 Warning LEDs and symbols
L1 or Clean heat exchanger:
Lights after 80 drying cycles.
To reset the cycle counter (for this function), open
the access panel while the dryer is switched on,
remove and clean the heat exchanger. Replace the
heat exchanger and close the access panel.
L2 or Clean filter
Lights at the end of the drying cycle to warn the user
that the filter requires cleaning.
L3 or Canister full
Lights during the course of the drying cycle if the
electronic control system detects that the floating
microswitch has closed or at the end of the cycle, to
indicate to the user that the canister must be
emptied.
L4 Start / Pause
Flashes (green) when the cycle is in pause mode, or
lights green (fixed) while the cycle is being
performed. If any of the alarm conditions has been
detected, the buzzer will sound three "beeps" twice
within a few seconds, and this LED will begin to
flash (red).

2008-03 ADL 15/58 599 70 66 79
4 Operation of the appliance
When the selector switch is turned from OFF to one of the drying programmes, the symbols or LEDs
corresponding to the drying phases light and the START/PAUSE LED begins to flash.
During this phase, the various options can be entered (the corresponding symbol(s) will light).
The display shows the maximum time for the drying cycle.
If an option is selected that is incompatible with the programme, the buzzer sounds and the display shows
"Err". The LEDs begin to flash.
If one or more options are entered, the time shown on the display will increase or decrease.
If the position of the selector is altered after entering the options, but before pressing START/PAUSE, the
options will be cancelled.
4.1 Operation of a cycle
To start the drying cycle, first use the selector to enter a drying programme. Then enter the desired option (if
any), and press START/PAUSE.
The LED corresponding to the START/PAUSE key remains lit and, simultaneously, the symbol
corresponding to the current phase lights. The display shows the maximum drying time.
The drying cycle comprises the following phases:
•DRYING
If an automatic cycle has been selected, the duration will be the time required to remove the humidity until
the desired humidity level is reached.
If the cycle is timer-controlled, then its duration will be the time entered by the user.
•COOLING
For timer-controlled cycles, the cooling phase has a maximum duration of 10 minutes. For automatic cycles,
the duration of the cooling phase may be shorter (this depends on the temperature inside the drum).
•ANTI-CREASE
The duration of the anti-crease phase is 30 minutes.
The programme may not be modified after a drying programme has commenced.
If the position of the programme selector is changed, the LED corresponding to the START/PAUSE key
begins to flash and the buzzer sounds to warn the user that the operation is not compatible. "Err" is shown
on the display.
If any key is pressed, the LED corresponding to the START/PAUSE key begins to flash and the buzzer
sounds to warn the user that the operation is not compatible. "Err" is shown on the display.
The options permitted for each cycle can be entered only after selecting the drying programme with the
selector at the start of the cycle, or during a cycle but after pressing the START/PAUSE key.
To reset (cancel) a drying cycle, turn the selector to OFF.
4.2 Operation in PAUSE mode
If the START/PAUSE key is pressed while a dryer cycle is being performed, the dryer interrupts the cycle
and the LED corresponding to the START/PAUSE key flashes. In models with display, the time-to-elapse
until the end of the cycle is shown.
If the programme selector is turned, the buzzer will sound to warn the user that this operation is
incompatible.
In this status, only certain options can be modified (see table "OPTIONS" in the Instruction Booklet).
If a key is pressed with an option that is not permitted for the programme being performed, the buzzer
sounds to warn the user and "Err" is shown on the display.
Press the START/PAUSE key again to resume the cycle at the point at which it was interrupted.

2008-03 ADL 16/58 599 70 66 79
4.3 Operation in DELAYED START mode
After selecting the drying programme, press this key to access the delayed start option. The delay time
increases each time the key is pressed.
To cancel (reset) this option, either turn the programme selector by one position or press the DELAYED
START key until the time displayed returns to zero. The cycle is started by pressing the START/PAUSE key.
4.4 Power failure
The table below shows how the dryer reacts in the event of a power failure during a drying cycle.
Before the power failure After the power failure
Programme selection (set-up) Programme selection (set-up)
Drying cycle Pause
Cycle paused Pause
Anti-crease cycle 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

2008-03 ADL 17/58 599 70 66 79
5 Structural characteristics
5.1 Heat pump in drying circuit: operating principles
The cycle performed by the heat pump in a dryer consists of evaporation, compression, condensation and
expansion of the liquid coolant (R134a). The circuit contains 270g of coolant.
The coolant is stored in the vaporizer (4) initially in liquid form. The temperature of the air entering from the
drum (14) is higher than the boiling point of the coolant. This causes heat to be transferred from the hot air to
the liquid coolant, causing it to evaporate. Due to this process of cooling, the humidity contained in the air
condenses and the resulting condensation flows into the collector tray (13) and is pumped from the tray to
the condensation canister (15).
The compressor (9) constantly draws in the vapour from the liquid coolant, which is compressed several
times and, as a result, is heated. The fluid cedes its heat in the condenser (3), which again heats the air
drawn in by the fan (2). This air, which is now dry, is again ducted through the drum where it absorbs
humidity.
The coolant, which has now resumed its liquid form, loses pressure and temperature via the capillary tube
(7) so that, inside the evaporator (13), heat is again absorbed from the humid air coming from the drum (14).
The balancing of the entire system is controlled by an NTC sensor located at the outlet of the condenser.
This sensor transmits a signal to the electronic control system, which switches on the compressor cooling fan
(10).
This cycle is repeated uninterruptedly in a closed circuit.
If water is present in the collector tray (13), the microswitch is tripped, and switches on the condensation
pump (12). The pump ducts the water to the canister (15). If the canister is full, any excess water overflows
into the tank of the canister, and then back to the collector tray (13) through a hose (not shown in the figure).
This moves the float upwards to trip the microswitch again. According to the time (from 15 to 40 seconds -
the time necessary for the pump to drain the sump) the electronic control system determines whether the
sump has been drained or whether water is overflowing from the canister. In this last case, the electronic
control system switches off the appliance and lights the "canister full" LED.
2. Fan
3. Condenser
4. Vaporizer
7. Capillary tube
9. Compressor
12.Condensation pump
13.Collector tray
14.Drum
15.Condensation canister

2008-03 ADL 18/58 599 70 66 79
1. Drying air (dry)
2. Fan for air circulation
3. Condenser
4. Vaporizer
5. Fluff filter
6. Humid air
7. Capillary tube
8. Cold, dry air
9. Compressor
10.Compressor cooling fan
11.Drum rotation motor
12.Condensation pump
13.Collector tray for water

2008-03 ADL 19/58 599 70 66 79
5.2 Structural components
1. Work top
2. Control panel support
3. Control panel
4. Fluff filter
5. Fluff filter support
6. Door seal
7. Internal door surround
8. External door surround
9. Rear panel protective cover
10. Rear panel cover
11. Rear panel
12. Cross-member
13. Side panels
14. Canister in upper section
15. Canister support
16. Duct
17. Front panel
18. Base
19. Fluff filter
20. Filter compartment door
21. Plinth
22. Front fluff filter
The front panel and the side panels are in enamelled sheet metal, while the rear panel is in galvanized sheet
metal. These panels are secured by self-tapping screws and anchored to the base.
The shaped base is in Carboran, and supports the main components.