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Electrolux W555H Service Manual
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Electrolux W555H Service Manual

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Service Manual

Washer extractor
W555H
Type W.55.H
438 9038-40/EN
2012.02.24
Service manual in original language

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Summary of Contents for Electrolux W555H

  • Page 1: Service Manual

    Service Manual Washer extractor W555H Type W.55.H 438 9038-40/EN 2012.02.24 Service manual in original language...

  • Page 3: Table Of Contents

    Contents Contents 1 Safety Precautions ......................5 2 Technical data ........................6 2.1 Drawing ........................6 2.2 Technical data......................7 2.3 Connections........................ 7 2.4 Sound levels ....................... 7 3 Machine presentation......................8 4 Function check ........................9 5 Door and door lock......................10 5.1 Door lock ........................
  • Page 4 Contents 13.1 General........................53 13.2 Error code......................... 54 13.3 Description of error codes and causes ..............56 MAIN COMMON ......................56 MAIN WASHER ......................57 DRUM MOTOR COMMON ..................61 DRUM MOTOR MCU....................62 INTERNAL COM......................67 INTERNAL COM. I/O ....................68 INTERNAL COM.

  • Page 5: Safety Precautions

    Safety Precautions 1 Safety Precautions The machine is only intended for water-wash use. Do not allow minors to use the machine. Do not hose down the machine with water. The machine's door lock must under no circumstances be bypassed. If the machine develops a fault, this must be reported to the person in charge as soon as possible. This is important both for your safety and that of others.

  • Page 6: Technical Data

    Technical data 2 Technical data 2.1 Drawing fig.6733A Operating panel Door opening, ⌀ 255 mm Detergent container Cold water Hot water Drain valve Drain pump Electrical connection 850/875* * C = Adjustable height, 25 mm.

  • Page 7: Technical Data

    Technical data 2.2 Technical data Weight, net Drum volume litres Drum diameter Drum depth Drum speed during wash 35/54 Drum speed during extraction 1450 Drum speed during extraction, Marine model 1300 G-factor, max. G-factor, max. Marine model Heating: Electricity Heating: Hot water Frequency of the dynamic force 24.2 Floor load at max extraction...

  • Page 8: Machine Presentation

    Machine presentation 3 Machine presentation fig.7608 ① Door Motor Heating unit Drum Detergent container Control panel with program unit I/O modules Drain / Drain pump After a repair has been made Whenever a repair has been made, a function check must be performed before the machine can be used again.

  • Page 9: Function Check

    Function check 4 Function check May only be carried out by qualified personnel. A function check must be made when the installation is finished and before the machine can be ready to be used. Open the manual water valves. Add detergent in the compartment for main wash and start a program. •...

  • Page 10: Door And Door Lock

    Door and door lock 5 Door and door lock 5.1 Door lock The door lock consists of: • An actuator that locks the door lock and also has one built-in micro switch. The actuator is bi-stable, i.e., it has two stable positions: locked door and unlocked door. The actuator must receive a pulse to lock and unlock the door lock.
  • Page 11 Door and door lock Demount the door. Demount the trim panel. Disconnect the door lock cables and demount the door lock. fig.7578 ④ Mount the new door lock and connect the cables. Mount the trim panel. Mount the door and the front panel.
  • Page 12 Door and door lock Emergency opening of door lock The door can be opened by pressing the emergency opening button. To access the emergency opening button, remove the front panel. The emergency opening button can be reached between the left side panel and the trim panel. If not accessible, remove also the trim panel.

  • Page 13: Motor And Motor Control

    Motor and motor control 6 Motor and motor control Take care when measuring the motor control system since all components have a potential difference of approximately 300V in relation to protective earth and neutral.The components will contain dangerous voltages when the green LED on the motor control board is on. The motor control system will remain live for 30-60 seconds after cutting the power to the machine and the motor has stopped running.

  • Page 14: Replacement Of Motor

    Motor and motor control 6.2 Replacement of motor Disconnect the power to the machine. Demount the rear panel. Disconnect the motor cable and unscrew the earth screw. Remove the belt. fig.7580 ⑥...
  • Page 15 Motor and motor control Demount the motor. Start with the bolt to the right and then the bolt to the left. fig.7581 ⑦ Mount the new motor. Start with the bolt to left and then the bolt to the right. Fasten the belt.

  • Page 16: Heating

    Heating 7 Heating 7.1 Replacement of heating element Disconnect the power to the machine. Demount the rear panel. Remove the belt (A). fig.7579 ⑧ Disconnect the connectors to the heating element. fig.7583 ⑨...
  • Page 17 Heating Loosen the bolt to the heating element and gently push on the middle of the heating element to release the flange. Remove the heating element and insert the new heating element. fig.7584 ⑩ Push on the middle of the heating element to get the flange in position. Fasten the bolt.

  • Page 18: Drum

    Drum 8 Drum 8.1 Replacement of drum Disconnect the power to the machine. Demount the top panel, the front— and back panels. Demount the door. Demount the trim panel. Demount the door lock and the rotation guard. Cut the cable ties and disconnect the level sensor, motor cable and earth cable at the back of the machine.
  • Page 19 Drum Demount the drain and hoses to the drum. Drain and type of hoses are depending on machine model, for more information refer to the spare parts list). Demount the air hose and the hose from the detergent compartment on top of the drum. Remove the belt.
  • Page 20 Drum Disconnect the inlet hose and the vent hose from the drum. Unscrew the screws to the side panels and lift of the cabinet to release the drum package. fig.7573 ⑬...
  • Page 21 Drum Demount the counter weight by loosening the tension strap. fig.7574 ⑭ Loosen the tensioner holding the drum and remove the drum. fig.7575 ⑮...
  • Page 22 Drum Mount the new drum. Fasten the tensioner and mount the counter weight with the tension strap. Mount the heating elements, hoses and drain in the same position as before. Fasten the belt. Make sure the belt is in position. Check the belt tension with a frequency meter or similar.

  • Page 23: Replacement Of The Belt

    Drum 8.2 Replacement of the belt Disconnect the power to the machine. Demount the back panel. Remove the belt (A) and put the new belt in position. Check the belt tension with a frequency meter or similar. The frequency shall be 70 Hz ± 5. Adjust if necessary with the right screw in the slotted hole.

  • Page 24: Drain

    Drain 9 Drain 9.1 Drain valve The water pressure in the cold water intake is used for closing the drain valve. There is a hose (1) connected between the water intake and the control valve (2). When the control valve is activated it opens and lets water into the supply line (3) which is connected to the drain valve.
  • Page 25 Drain Replacement of drain valve Disconnect the power to the machine. Demount the front panel. fig.6215B ⑱ Demount the door. Demount the trim panel. Remove the hose from the valve’s nipple for water supply (A). Remove the nut but leave the bolt (B) in place, securing the drain valve to the right-hand side of the saddle.
  • Page 26 Drain Mount the new drain valve. Mount the drain valve onto the right-hand bolt (B) on the saddle. Mount the bolts (C) on the left-hand side of the saddle. Tighten the bolt (B). Mount the hose for water supply (A). Mount the hose from the drum (D) on the drain valve.

  • Page 27: Drain Pump

    Drain 9.2 Drain pump The drain pump is located under the drum. Access the drain pump through a door on the front of the machine. The motor which drives the pump is activated from the timer. Replacement of drain pump Open the door to the drain pump and pull out the hose.

  • Page 28: Detergent Container

    Detergent container 10 Detergent container Water connections into the detergent container are fitted with dispersers which mix the detergent thoroughly with water and flush the compartments clean. From the bottom of the detergent container the water is flushed down into the drum. fig.500234...

  • Page 29: Replacement Of Detergent Container

    Detergent container 10.1 Replacement of detergent container Remove the detergent container from the machine and replace with the new one. fig.7212B 10.2 Replacement of siphon Remove the detergent container from the machine and remove the siphon to be replaced. Mount the new siphon.

  • Page 30: Replacement Of Reed Switch

    Detergent container 10.3 Replacement of reed switch Disconnect the power to the machine. Demount the top panel. Disconnect the cable from the program unit. Remove the reed switch by pulling it out a bit and down from its position. Mount the new reed switch and make sure it is in position. Connect the cable in the same position as before.

  • Page 31: Control Panel

    Control panel 11 Control panel 11.1 Program unit 11.1.1 Description The program unit is electronic and comprises a circuit board containing microprocessor, program memory, serial interface to the motor control, I/O-boards etc. The program unit receives its power from a separate power supply unit. fig.7582 The program unit receives information from the I/O boards about inputs like temperature sensor, level sensor, door status and outputs like drum, water valves, drain and heat control.

  • Page 32: Connections

    Control panel 11.1.2 Connections The program unit board has the following connections: Board connector Function M-COM Communication, motor control Databus D-BUS D-BUS Databus TACHO Tachometer COIN Coin meter (coin 1, coin 2, blocking) EMERG / INP 1 Input, reed switch detergent box FREE / INP 2 Free program (key switch) / Input RS 232...

  • Page 33: Replacement Of Program Unit

    Control panel 11.1.3 Replacement of program unit Disconnect the power to the machine. Demount the top panel. Demount the control knob Insert a screwdriver in the upper hole. fig.7491 Gently push the screwdriver inwards and turn the control knob counter-clockwise until the screwdriver goes further in.
  • Page 34 Control panel Demount the cover ring When the control knob is removed, insert the screwdriver in the lower hole and press gently. Turn the cover ring counter-clockwise until it is possible to remove the cover ring. fig.7490 Demount the program unit Demount the cover to the CPU and disconnect the cables.
  • Page 35 Control panel Demount the control knob unit from the program unit by unscrewing the screw a bit (4–5 mm) until the control knob unit loosens. fig.7640 Mount the new program unit Start by mounting the control knob unit on the program unit. Fasten the screw. Mount the program unit with the CPU part.
  • Page 36 Control panel Rotate the inner knob until the locking device is pointing downwards. Insert the screwdriver and press the locking device. fig.7494 Mount the control knob on the inner knob. Continue to press with the screwdriver and turn the control knob clockwise until it stops when it is in position. fig.7495A...

  • Page 37: Control Knob

    Control panel 11.2 Control knob 11.2.1 Replacement of control knob Disconnect the power to the machine. Insert a screwdriver in the upper hole. fig.7491 Gently push the screwdriver inwards and turn the control knob counter-clockwise until the screwdriver goes further in. fig.7492 Continue turning a quarter of a turn until it is possible to remove the control knob.
  • Page 38 Control panel Cover ring When the control knob is removed, insert the screwdriver in the lower hole and press gently. Turn the cover ring counter-clockwise until it is possible to remove the cover ring. fig.7490 Mount the new cover ring and rotate it clockwise until it is in position. Rotate the inner knob until the locking device is pointing downwards.
  • Page 39 Control panel Mount the new control knob on the inner knob. Continue to press with the screwdriver and turn the control knob clockwise until it stops when it is in position. fig.7495A...

  • Page 40: O Modules

    I/O modules 12 I/O modules 12.1 General The machine can be equipped with either one or two I/O modules: • I/O module type 1, 11 or 3 is always installed in the machine at delivery. It controls internal machine functions and outputs to heating, motors etc. •...

  • Page 41: Replacement Of I/O Module

    I/O modules 12.2 Replacement of I/O module I/O module type 1, 11 or 3 and I/O module type 2 I/O module type 1, 11 or 3 and I/O module type 2 are installed in the same way. If the machine has I/O module type 2, it is located on I/O module type 1, 11 or 3.
  • Page 42 I/O modules Insert the new module and make sure it is in position. Connect the electrical connections in the same way as before. If both I/O module type 1, 11 or 3 and I/O module type 2 is to be replaced it is recommended to fit the modules together before mounting in the machine.
  • Page 43 I/O modules I/O module type 10 Disconnect the power to the machine. Demount the top panel. Remove the cover to the program unit and I/O module type 10. Remove the electrical connections on the module. (Note the position of the connections). Loosen the screw a bit and remove the I/O module by lifting it upwards.
  • Page 44 I/O modules I/O module type 6 Disconnect the power to the machine. Demount the front panel. Demount the door. Demount the trim panel. Disconnect the cable and demount I/O module type 6. fig.500266 Mount the new module and make sure it is in position. Connect the cable.

  • Page 45: External Connections To I/O Module Type 2

    I/O modules 12.3 External connections to I/O module type 2 Inputs The signal level may be 5 - 24V DC/AC or 100 - 240V AC. At 5 - 24V, the signal reference must be connected to 3 and at 100 - 240V to 4. Note! Do not mix potentials on the inputs.

  • Page 46: Circuit Diagram Of Function Options For I/O Module Type 2

    I/O modules 12.4 Circuit diagram of function options for I/O module type 2 12.4.1 External coin meter/Central payment (2A) The signal received from external coin meters must be a pulse. In order to program/set prices, the signal initiating the price programming procedure must be active (high).

  • Page 47: Central Payment (2B)

    I/O modules 12.4.2 Central payment (2B) To start the machine from a central payment system, the payment system must transmit a start pulse to the machine. The start pulse can be either 230V or 24V. In order to receive a feedback signal once the machine has started, 230V or 24V must be connected to connection 19.

  • Page 48: Central Payment (2C)

    I/O modules 12.4.3 Central payment (2C) The central payment or booking system shall transmit an active (high) signal to the machine once permission has been granted to start the machine. The signal must remain active (high) until the machine starts. A feedback signal will be present on connection 18 and remain active (high) whilst the machine door is closed but the program has not started.

  • Page 49: Outputs For Detergent Signals And Inputs For Pause Signals And "Empty" Signal, Price Reduction (2D)

    I/O modules 12.4.4 Outputs for detergent signals and inputs for pause signals and "empty" signal, price reduction (2D) The figure shows standard function addressing for machines with the coin program package. By maintaining an active (high) signal on connection 5 ("Price red"), the price of the program can be reduced.

  • Page 50: Outputs For Detergent Signals And Inputs For Pause Signals And "Empty" Signal (2E)

    I/O modules 12.4.5 Outputs for detergent signals and inputs for pause signals and "empty" signal (2E) Heating pause: By connecting a signal to connection 6, you can pause operation of the machine whilst it heats up. The machine will pause for as long as the pause signal remains active (high). fig.6315A...

  • Page 51: Central Booking/Payment (2F)

    I/O modules 12.4.6 Central booking/payment (2F) The central payment or booking system shall transmit an active (high) signal to the machine once permission has been granted to start the machine. The signal must remain active (high) until the machine starts. A feedback signal will be present on connection 18 and remain active (high) whilst the program is running.

  • Page 52: Machines With I/O Module Type 3

    I/O modules 12.4.7 Machines with I/O module type 3 By maintaining an active (high) signal on connection 3 "Price reduction”, the price of the wash program can be reduced. This function has a number of uses, including providing reductions during a specific period of the day.

  • Page 53: Troubleshooting

    Troubleshooting 13 Troubleshooting 13.1 General The troubleshooting section is used to trace errors in the machine to a defective component or unit. There is a memory in the CPU that will save the selected program for 10 minutes in the case of power failure.

  • Page 54: Error Code

    Troubleshooting 13.2 Error code An error in the program or in the machine is indicated on the display by an error code and a descriptive text. The error codes are divided into different groups called “Major” comprising different error codes called “Minor”.
  • Page 55 Troubleshooting Error code Text Major Minor DRUM MOTOR MCU HEATSINK TOO HOT MOTOR TOO HOT NO INTERLOCK MOTOR SHORT CIRCUIT INTERLOCK HARDWARE LOW DC VOLTAGE HIGH DC VOLTAGE MOTOR NOT FOLLOW NO PARAMET. SET IN MCU Error code Text Major Minor INTERNAL COM.

  • Page 56: Description Of Error Codes And Causes

    Troubleshooting 13.3 Description of error codes and causes MAIN COMMON 10:11 REAL TIME CLOCK OUT OF ORDER The real time clock is used by the CPU, measuring time, power failure, error codes, etc. The error code is activated if there is a time out in the communication with the internal real time clock in the CPU or if the data sent to/from the real time clock is incorrect.

  • Page 57: Main Washer

    Troubleshooting MAIN WASHER 11:1 NO WATER When filling with water, the level specified by the program must be attained within a certain time. This time is normally set to 10 minutes but can vary depending on the type of machine and the software. If the filling time exceeds the maximum allowed filling time, this error code will be displayed.
  • Page 58 Troubleshooting 11:6 WATER IN MACHINE This error code can only arise in the case of rapid advance to the end of the program or if program is aborted. This error code will also appear if the level system has not indicated “empty drum” within a certain time (approximately 3 min).

  • Page 59: 11:16 Timeout Heating

    Troubleshooting 11:16 TIMEOUT HEATING This error code is based on degrees/minutes. A check is made during water filling. If there is a drain leakage there will be repeated fillings and therefore no error code from gradient check. This timeout is an overall timeout that is started when heating is started. If heating time is longer than set in MAX HEATING TIME (Config 2) this error code will be displayed.
  • Page 60 Troubleshooting 11:29 WATER LEVEL LOW DLCU LEVEL HIGH The DLCU on I/O type 10 contains a mechanical level guard which ensures that there is no water in the machine when the lock opens. To ensure that the level guard functions correctly, the mechanical level guard is compared with a nominal value generated by the level system, which is compared with the electronic level sensor.

  • Page 61: Drum Motor Common

    Troubleshooting DRUM MOTOR COMMON 20:1 O.H. DRUM MOTOR Not valid for washer extractors with MCU. This error code is activated if the overheating protection for the drum motor has trigged. The overheating protection is automatically restored. When the overheating protection is restored the error code is automatically reset and the ongoing program will continue.

  • Page 62: Drum Motor Mcu

    Troubleshooting DRUM MOTOR MCU 21:1 HEATSINK TOO HOT This error code is generated by the MCU. There is a temperature sensor (NTC) mounted on the MCU cooling flange next to the power transistors in the output stage. If the temperature of the cooling flange gets too high (>...
  • Page 63 Troubleshooting 21:3 NO INTERLOCK This error code is generated by the MCU. The MCU must be powered with 230V / 50 or 60 Hz on the interlock input in order to drive the motor. This signal is a confirmation that the door is closed and locked.
  • Page 64 Troubleshooting Action • If the error is a stable one, it is generally not difficult to locate the defective unit through resistance measurement and testing with the service program. • Further information can be obtained by studying the contents of ”MCU FAULT LOGGER”. Study the following: SHORT CIRCUIT 2 (specifies how many times the error code has been active).
  • Page 65 Troubleshooting 21:8 HIGH DC VOLTAGE This error code is generated by the MCU. The MCU constantly measures the voltage over the mains input. If the voltage is too high (= exceeds a certain limit), the MCU will shut off the current to the motor.
  • Page 66 Troubleshooting 21:20 NO PARAMET. SET IN MCU The program unit has read from the MCU or I/O board that the interlock is not active. The reason for interlock failure can be a problem with the hatch lock, damaged motor supply cables or the I/O board with interlock voltage etc.

  • Page 67: Internal Com

    Troubleshooting INTERNAL COM. 40:1 I/O BOARD MISHMASH The error code is activated if wrong I/O board is adressed to wrong position in the machine. After addressing of I/O boards the CPU reads the type of board in every position. If there is a mishmash between what the CPU reads and what the software expect on any address the error code will be displayed.

  • Page 68: Internal Com. I/O

    Troubleshooting INTERNAL COM. I/O 41:1 CHARGE CIRCUIT The DLCU on I/O board 10 contains an arming circuit that is charged when the door lock coil is to be activated. For safety reasons, this arming circuit must be discharged when the door lock coil is not to be activated.
  • Page 69 Troubleshooting Action • If the error returns after a reset, and is not caused by a error in the hatch lock or the cables for the hatch lock, change the I/O board 10.

  • Page 70: Internal Com. I/O Type 6

    Troubleshooting INTERNAL COM. I/O TYPE 6 42:1 INTERNAL ERROR Reading of A/D values out of range. 42:2 POSITION TEST Position value out of range. Check that I/O module type 6 is still in correct position. 42:3 EXTRACT TEST I/O module type 6 is not able to read any or too low values during extraction.

  • Page 71: External Com. Payment

    Troubleshooting EXTERNAL COM. PAYMENT 51:22 NO CBT COMMUNICATION Machine with payment system using serial communication to machine. Serial communication with payment system interrupted. Check network cable between machine and payment system. Check that payment system is operational. To reset machine to working state without repairing payment system, use Reset CBT communication in service mode.

  • Page 72: External Com. Cmis

    Troubleshooting EXTERNAL COM. CMIS 52:1 CMIS COMMUNICATION ERROR Communication between machine and network computer has been interrupted. Check network cable between machine and network. Check that CMIS on network computer is operational. The machine can be operated but statistics could be affected and data could be lost.

  • Page 73: Maintenance

    Maintenance 14 Maintenance 14.1 Inspect the interior of the machine Inspect the interior of the machine to ensure that no leaks are noticed. During an actual wash cycle; disconnect the power to the machine and proceed as follows: • Remove the top panel, the front and rear panel. •...
  • Page 74 Electrolux Laundry Systems Sweden AB 341 80 Ljungby, Sweden www.electrolux.com/laundrysystems Share more of our thinking at www.electrolux.com...

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