SERVICE MANUAL WASHING TC6 TC5 © ELECTROLUX ZANUSSI S.p.A. Spares Operations Italy Corso Lino Zanussi, 30 I - 33080 PORCIA /PN (ITALY) Fax +39 0434 394096 Edition: 2006-06-09 Publication no.
SOI/DT 2006-06 dmm 2/44 599 38 02-86
Contents 1 2 3 4 Purpose of this manual ....................................................................................................................................4 PRECAUTIONS ...............................................................................................................................................4 GENERAL CHARACTERISTICS.....................................................................................................................5 CONTROL PANEL.........................
1 Purpose of this manual The purpose of this manual is to provide service engineers who are already familiar with the repair procedures for traditional washing machines with information regarding appliances fitted with the ENV06 electronic control system and produced in Porcia (Italy).
3 GENERAL CHARACTERISTICS The ENV060 electronic control system consists of a single PCB, which incorporates the power, control and display functions. The PCB is mounted on a casing fitted to the control panel. There are two basic versions of the board: ♦ one with the programme selector only; ♦ one with the programme selector and another selector that can regulate the temperature or the spin speed.
4 CONTROL PANEL 4.1 • • • • 4.2 TC5 Styling max. 5 buttons 15 or 21-position programme selector 6-position second selector 17 LEDs TC6 Styling • • • max.
4.3 Configuration of control panel The washing programmes, the functions of the selector knob and the various pushbuttons vary according to the model, since these are determined by the configuration of the appliance. 4.3.1 Programme selector (S1) The selector features 15-21 positions and incorporates the ON/OFF switch.
The appliances can be configured in two ways: ª TIME DRIVEN as option for a base programme Pressing button P2 sequentially, it is possible to choose one of the three levels and the lighting up of the corresponding LED confirms the selections. L8 Daily L7 Light L6 Super quick The different washing options like: Prewash, Economy, etc. are set obligatory as programme. ª TIME DRIVEN as main programme It is connected to the main programme for ex: Cotton, Cotton Daily, Cotton Quick, etc.
4.4 Pushbuttons and LEDs The functions of each button are defined by the configuration of the appliance. Version TC5 with S2 selector configured as temperature regulator Version TC6 • Button no. 1: this button is connected to LEDs (L1÷L5); pressing it sequentially the spin speed varies from the max. speed, to no spin or to rinse hold. Version TC5 With S2 selector configured as spin speed regulator. • Button no.
• LED wash phase indicators: The LEDs L13, L12, L16 are configurable and are used as indicators of the wash phases.
5 WASHING PROGRAMMES AND OPTIONS 5.1 Programmes The washing programmes can be configured. The basic programmes are listed in the table below.
5.2 Options The table below lists the possible options for the washing programmes, the compatibility of the various options and with the cycle, and when it is possible to select or modify the options. The options can be selected in three ways: using the programme selector: in this case, the options are configured as special programmes; using the secondary selector (temperature or spin speed); using the pushbuttons.
Hygienize Soak Rinses Rinses delicates Conditioner Delicate conditioner Drain Spin Delicate spin X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Half-load No spin Reduced spin speed Super Quick X X X X Light X X X X Daily X X X X Normal X X X X X Economy (*) X X X X X Easy-iron X X X Extra rinse X X X Bleach X X X Stains Pre-wash Shirts Mixed° 40°C 30°C cold 30°C 40°C 90°C 60°C 50°C 40°C 30°C Night cycle Sport Rinse-hold Compatibilit
5.2.
5.3 Description of options • Rinse-hold → Stops the appliance with water in the tub before the final spin cycle. → To drain the water, reset the programme and then select a drain or spin cycle. • Night cycle → Eliminates all spin phases and adds three rinses in COTTON cycles and two rinses in SYNTHETICS cycles. → Stops the appliance with water in the tub before the final rinse. → To drain the water, reset the programme and then select a drain or spin cycle.
5.3.1 No spin • Eliminates all the spin phases. → If selected, three rinses are added in the COTTON cycle and one in the SYNTHETICS cycle. • Daily → Modifies the structure of the COTTON - SYNTHETICS - DELICATES cycles to obtain very short washing times. • Light → Modifies the structure of the wash phase of the COTTON - SYNTHETICS - DELICATES cycles in a short time. • Very short → Modifies the structure of the wash phase of the COTTON - SYNTHETICS - DELICATES cycles for half load.
5.3.3 Modifying the spin speed → Reduces the speed of all spin cycles as shown in the table. → The last position can be used for NO SPIN, RINSE-HOLD or NIGHT-TIME CYCLE. → If the NO-SPIN option is selected, three rinses are added in the COTTON cycle, and two in the SYNTHETICS cycle. The tables below list examples of modification of the spin speed. 6-position selector 1 - Max. spin speed 2 3 4 5 6 - Last position Button with 5 LEDs 1 - Max.
5.
6 TECHNICAL CHARACTERISTICS 6.1 Control system memory 6.1.1 General structure of the memory system The system features an EEPROM memory module, fitted externally to the microprocessor, which serves to memorize the configuration data, the description of the cycle, the status of the appliance in the event of a power failure, and the alarms. Power Failure and Machine status μP External serial port (asynchronous FLASH RAM Configuration of the appliance configuration Description of the cycle 6.1.
Ö Washing cycle tables: Each washing cycle consists of a series of phases (steps); the steps are the basic instructions which comprise the description of the cycle, which is common to all appliances having the same characteristics: - Water fill - Motor movement - Reset - Heating - Drain - Spin - “IF” conditions (options, temperatures etc.
6.2 Door interlock The voltmetric device with PTC takes 1÷3 minutes before opening the door after the end of the cycle. 14 PCB 12 Door interlock 11 Suppressor ON/OFF = Main switch (programme selector) 6.2.1 • • • 6.
6.4 Analogue pressure switch of water level control in the tub General features The electronic pressure switch is an analogue device that controls the water level in the tub, used in the models with electronic control and it is directly connected to the main PCB. Electronic pressure switch ELECTRONIC PRESSURE SWITCH Electric symbol The pressure switch is connected by a hose to the pressure chamber.
6.5 Detergent dispenser There are two versions of the detergent drawer: one large drawer and one smaller (ecological) drawer. 6.5.1 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
6.5.1.1 Operating principle Water fill to pre-wash compartment (pre-wash solenoid) • • This solution is used in models with 3-compartment detergent drawers. The detergent in compartment “a” is introduced at the beginning of the pre-wash phase. In certain models featuring the “stains” option, compartment “a” may also be used for introduction of a stain-removal product, which is introduced during the washing phase.
6.5.2 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
6.5.2.1 Operating principle Water fill to pre-wash compartment (pre-wash solenoid) • • This solution is used in models with 3-compartment detergent drawers. The detergent in compartment “a” is introduced at the beginning of the pre-wash phase. In certain models featuring the “stains” option, compartment “a” may also be used for introduction of a stain-removal product, which is introduced during the washing phase.
6.6 9 10 14 Drain pump Drain pump Thermal protector PCB The PCB powers the drain pump via a triac as follows: - until the electronic pressure switch closes on empty, after which the pump is actioned for a brief period or passes to the subsequent phase; for a pre-determined period (and eventually an alarm appears).
6.7 Heating 2 13 14 K1 NTC temperature sensor Heating element (with thermal fuses) PCB Relay 1. 2. 3. 4. Tubular casing Thermal fuses NTC Sensor Connectors The heating element is powered by a relay (K1) of the electronic board and is provided with two thermal fuses, which interrupt if the temperature degree exceeds the values by which they are calibrated.
6.9 5 6 7 8 14 Motor Stator Rotor Protector Tachometric generator PCB 6.10 Power supply to motor The PCB powers the motor via a triac. The direction of rotation is reversed by switching of the contacts on the two relays (K2-K3), which modify the connection between the rotor and the stator.
6.12 “FUCS” (Fast Unbalance Control System) rpm The control procedure for unbalanced loads is performed dynamically, before each spin cycle, as follows: ª The phase begins at a speed of 55 rpm; the speed can never fall below this threshold, otherwise the check is repeated. ª At intervals of 300 ms, the balance is calculated and compared with predetermined limits.
• Balancing in the available longer interval 1 2 Phase 1 2 3 4 5 6 7 • 3 4 5 Unbalancing index 0 1 2 3 1 2 3 6 7 Time-out (sec) 60 120 60 90 120 90 90 Unbalancing after all phases In this case the spin (or impulse) is not performed.
7 DEMO MODE 1. Switch off the appliance. 2. Press and hold down START/PAUSE button and the nearest option button simultaneously (as represented in figure). 3. Holding down both buttons, switch the appliance on by turning the programme selector by three positions clockwise. 4. Continue to hold down the buttons till the LEDs begin to flash (at least 5 seconds). 7.1 Exiting DEMO mode To exit the demo cycle, switch the appliance off (programme selector in off/cancel position). 8 DIAGNOSTICS SYSTEM 8.
8.3 Diagnostics phases Irrespective of the type of PCB and the configuration of the programme selector it is possible, after entering diagnostics mode, to perform diagnostics on the operation of the various components and to read the alarms by turning the programme selector clockwise. All the alarms are enabled during the diagnostics cycle.
9 ALARMS 9.1 Displaying the alarms to the user The alarms displayed to the user are listed below: ª Door open ª Drain difficulty (dirty filter) ª Water fill difficulty (closet tap) They are represented through the flashing of the red LED inside the START-PAUSE and can be solved directly by the user.
9.2.1 Displaying the alarm The alarm is displayed by a repeated flashing sequence of the START / PAUSE button with red and green light (0,5 seconds on, 0,5 seconds off with a 2,5 second pause between the sequences). • button indicator START / PAUSE with red light → indicates the first digit of the alarm code (family) • button indicator START / PAUSE with green light → indicates the second digit of the alarm code (internal number of the family) These two LEDs are featured in all models.
9.3 Rapid reading of alarm codes The last three alarm codes can be displayed even if the programme selector is not in the tenth position (diagnostics) or if the appliance is in normal operating mode (e.g. during the execution of the washing programme): → Press and hold down START/PAUSE and the nearest option button (as to enter the DIAGNOSTICS), for at least two seconds: the LEDs initially switch off, and then display the flashing sequence indicating the last alarm.
9.5 Table of alarm codes Alarm Description E11 Poor water fill before wash cycle E13 Water leaks E21 Poor draining E23 Faulty triac for drain pump Possible fault Action/machine status Tap closed or water pressure too low; Drain tube improperly positioned; Water fill solenoid valve is faulty; Leaks from water circuit on pressure Cycle is paused with door locked. switch; Pressure switch faulty; Wiring faulty; PCB faulty.
Alarm E45 E51 E52 E53 E54 Description Faulty sensing by triac on door delay system (input voltage to microprocessor: always 0 or 5 V) Motor power supply triac shortcircuited No signal from motor tachometric generator Motor triac sensing circuit faulty (input voltage to microprocessor: 0 or 5 V) Motor relay contacts sticking (high voltage level when the relay switches to OFF) Possible fault PCB faulty. Action/machine status (Safety drain cycle) Cycle stops.
Alarm Description Frequency of appliance out of the EH1 limits EH2 Voltage too high EH3 Voltage too low Incongruence between safety relay EHE and safety “sensing” circuit Possible fault EF1 EF2 EF4 or 5 V) Drain filter blocked (too long drain phase) Overdosing of detergent (too much foam during drain phases) Low water fill pressure, no signal of the flow meter and solenoid valve open Unbalanced fill EF5 E00 No alarm SOI/DT 2006-06 dmm Reset Power supply problems (incorrect / disturbance); PCB fault
9.
9.7 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16.
10 ACCESSIBILITY TO THE ELECTRONIC CONTROL SYSTEM 10.1.1 Top panel a. Remove the two rear screws, push the top panel towards the rear and release from the cabinet. 10.1.2 Control panel b. c. b Press the drawer lock. Extract. c d. Remove the screw which secures the control panel to the dispenser. d e. Cut the clamp which secures the wiring to the board casing (while re-assembling, put a new clamp). e f. Release the wiring from the clamp. g. Release the clamp from the cross-member. h.
a. Loosen the screws which secure the control panel to the cross-member. b. Release the hook. c. Lift the control panel up and extract it. a a d. Rotate the control panel. e. Detach the connector indicated by the arrow. f. b d Place the wiring (see fig.). g. Extract the control panel. h. Rotate the control panel around itself.
a. Place it as shown in figure. b. Remove the screws and release the hooks which secure the board casing to the control panel. c. Before mounting the new board extract the knob pressing the hooks indicated by the arrows as represented in figure. While re-assembling repeat the same operations in reverse order and pay attention to position correctly the knob. A While remounting the work top, do not position it as represented in fig. A but see fig. B.
