Page 1 Service Manual Washer — Light Dry WLD720, WLD725, WLD730, WLD745, WLD762, WLD777 cc/co Type W3... 438903869/US 2018.01.22 Wascomat Commercial Laundry Equipment 516-371-4400 www.wascomat.com...
Page 2: Tech Support
WARRANTY CLAIMS Wascomat’s Technical Support Staff will honor valid manufacturer’s parts warranty claims providing your Wascomat machines are registered for warranty coverage upon installation. If they are not registered, you can validate your warranty claim by providing information about when and where you purchased the Wascomat machine(s), the model and serial number(s).
Page 3 Safety WARNING: ALL OPERATING AND MAINTENANCE PROCEDURES SHOWN ON THE NEXT PAGE OF THIS MANUAL MUST BE FOLLOWED DAILY FOR PROPER OPERATION OF YOUR MACHINE. MAKE CERTAIN TO KEEP THIS MANUAL IN A SECURE PLACE FOR FUTURE REFERENCE. PLEASE ENTER THE FOLLOWING INFORMATION AS IT APPEARS ON THE MACHINE(S) DATA PLATE(S).
Page 4: Important Safety Instructions
Safety IMPORTANT SAFETY INSTRUCTIONS WARNING - To reduce the risk of fire, electric shock, or injury to persons when using your appliance, including the following: 1. Read all instructions before using the appliance. 2. This machine must be securely bolted to an uncovered concrete floor. 3.
Page 5 Safety NOTICE TO: OWNERS, OPERATORS AND DEALERS IMPROPER INSTALLATION AND INADEQUATE MAINTENANCE, POOR HOUSEKEEPING AND WILLFUL NEGLECT OR BYPASSING OF SAFETY DEVICES MAY RESULT IN SERIOUS ACCIDENTS OR INJURY. TO ASSURE THE SAFETY OF CUSTOMERS AND/OR OPERATORS OF YOUR MACHINE, THE FOLLOWING MAINTENANCE CHECKS MUST BE PERFORMED ON A DAILY BASIS. Prior to operation of the machine, check to make certain that all operating instructions and warning signs are affixed to the machine and legible.
Page 6 Safety AVERTISSEMENT : TOUTES LES PROCÉDURES DE FONCTIONNEMENT ET DE MAINTENANCE INDIQUÉES À LA PAGE SUIVANTE DE CE MANUEL DOIVENT ÊTRE SUIVIES QUOTIDIENNEMENT POUR GARANTIR LE BON FONCTIONNEMENT DE VOTRE MACHINE. GARDEZ CE MANUEL DANS UN ENDROIT SÉCURISÉ POUR RÉFÉRENCE ULTÉRIEURE. VEUILLEZ ÉCRIRE LES INFORMATIONS SUIVANTES QUI FIGURENT SUR LA OU LES PLAQUES SIGNALÉTIQUES DE LA OU DES MACHINES.
Page 7: Instructions De Sécurité Importantes
Safety INSTRUCTIONS DE SÉCURITÉ IMPORTANTES AVERTISSEMENT - Pour réduire le risque d'incendie, de choc électrique ou de blessures aux personnes lors de l'utilisation de votre appareil, y compris les points suivants : 1. Lisez toutes les instructions avant d'utiliser l'appareil. 2.
Page 8 Safety NOTICE POUR : LES PROPRIÉTAIRES, OPÉRATEURS ET REVENDEURS UNE INSTALLATION INCORRECTE, UNE MAINTENANCE INADÉQUATE, UN MAUVAIS ENTRETIEN MÉNAGER ET LA NÉGLIGENCE VOLONTAIRE OU LE CONTOURNEMENT DES DISPOSITIFS DE SÉCURITÉ PEUVENT ENTRAÎNER DES ACCIDENTS OU DES BLESSURES GRAVES. POUR ASSURER LA SÉCURITÉ DES CLIENTS ET/OU DES OPÉRATEURS DE VOTRE MACHINE, LES CONTRÔLES DE MAINTENANCE SUIVANTS DOIVENT ÊTRE EFFECTUÉS SUR UNE BASE QUOTIDIENNE.
Page 9 Safety ADVERTENCIA: TODOS LOS PROCEDIMIENTOS DE MANEJO Y MANTENIMIENTO QUE APARECEN EN LA SIGUIENTE PÁGINA DE ESTE MANUAL DEBERÁN SEGUIRSE DIARIAMENTE PARA EL CORRECTO FUNCIONAMIENTO DE LA MÁQUINA. ASEGÚRESE DE CONSERVAR ESTE MANUAL EN UN LUGAR SEGURO PARA CONSULTARLO EN EL FUTURO.
Page 10: Instrucciones Importantes Sobre Seguridad
Safety INSTRUCCIONES IMPORTANTES SOBRE SEGURIDAD ADVERTENCIA: Para reducir el riesgo de incendio, descarga eléctrica o lesiones personales al utilizar el dispositivo, incluyendo lo siguiente: 1. Lea las instrucciones antes de utilizar el dispositivo. 2. Esta máquina debe fijarse de forma segura a un suelo de hormigón visto. 3.
Page 11 Safety AVISO PARA: PROPIETARIOS, OPERADORES Y DISTRIBUIDORES UNA INSTALACIÓN INCORRECTA Y UN MANTENIMIENTO INADECUADO, UNA MALA CONSERVACIÓN Y LA OMISIÓN DELIBERADA O PUENTEO DE LOS DISPOSITIVOS DE SEGURIDAD PODRÍA RESULTAR EN ACCIDENTES O LESIONES GRAVES. PARA GARANTIZAR LA SEGURIDAD DE LOS CLIENTES Y/O LOS OPERADORES DE SU MÁQUINA, DEBERÁN REALIZARSE LAS COMPROBACIONES DE MANTENIMIENTO SIGUIENTES A DIARIO.
Page 12: Notice To Installer
Improper fastening of this machine to its foundation, inferior foundation materials, an undersized foundation, the use of fabricated steel bases not provided by Wascomat or its approved supplier(s), the use of an improper type, number, or size of mounting bolts, or failure to use proper hardware on mounting bolts may result in damage to the machine that will not be covered by the manufacturer's warranty.
Page 13: Table Of Contents
Contents Contents 1 Symbols ............................15 2 Technical data...........................16 Drawing ..........................16 2.1.1 WLD720, WLD725......................16 2.1.2 WLD730 ........................17 2.1.3 WLD745 ........................18 2.1.4 WLD762, WLD777......................19 Technical data .........................20 Connections ..........................20 3 Machine presentation ........................21 4 Door and door lock ..........................22 Description ..........................22 Replacements and adjustments ....................25 4.2.1 Replacement of the door ....................25 4.2.2 Replacement of the door handle ..................26 4.2.3 Replacement of the door lock unit ..................27...
Page 14 Contents MAIN DRYER ........................84 MAIN BARRIER ......................90 MAIN W&D ........................93 MAIN DRYER ........................94 DRUM MOTOR COMMON....................95 DRUM MOTOR EWD .....................96 DRUM MOTOR KEB ....................100 DRUM MOTOR OBIWAN....................109 FAN MOTOR COMMON ....................112 INTERNAL COM......................113 INTERNAL COM. I/O TYPE 10..................115 INTERNAL COM.
Page 15: Symbols
Service Manual 1 Symbols Caution Caution, high voltage Read the instructions before using the machine...
Page 16: Technical Data
Service Manual 2 Technical data 2.1 Drawing 2.1.1 WLD720, WLD725 fig.8030A Operating panel Door opening, WLD720: ⌀ 310 mm / 12 3/16 inch, WLD725: ⌀ 365 mm / 14 3/8 inch Detergent container Cold water Hot water Re-used water Drain valve Liquid detergent supply Electrical connection Steam connection...
Page 17: Wld730
Service Manual 2.1.2 WLD730 fig.8031A Operating panel Door opening, WLD730: ⌀ 365 mm / 14 3/8 inch Detergent container Cold water Hot water Re-used water Drain valve Liquid detergent supply Electrical connection Steam connection inch WLD730 1216 1337 28 3/8 47 7/8 14 7/16 16 11/...
Page 18: Wld745
Service Manual 2.1.3 WLD745 fig.8032A Operating panel Door opening, WLD745: ⌀ 395 mm / 15 9/16 inch Detergent container Cold water Hot water Re-used water Drain valve Liquid detergent supply Electrical connection Steam connection inch WLD745 1345 1440 1048 29 1/2 52 15/ 17 5/16 19 11/...
Page 19: Wld762, Wld777
Service Manual 2.1.4 WLD762, WLD777 fig.8033A Operating panel Door opening, WLD762, WLD777: ⌀ 435 mm / 17 1/8 inch Detergent container Cold water Hot water Re-used water Drain valve Liquid detergent supply Electrical connection Steam connection inch WLD762 1029 1426 1599 1129 32 11/...
Page 20: Technical Data
Service Manual 2.2 Technical data WLD720 WLD725 WLD730 WLD745 WLD762 WLD777 Weight, net Drum volume litres 11.7 Drum diameter inch 20 1/2 23 7/16 23 7/16 25 9/16 28 9/16 31 5/16 Drum speed during wash Drum speed during extraction G-factor, max.
Page 21: Machine Presentation
Service Manual 3 Machine presentation fig.7749 Door Motor Heating unit Drum Detergent container Control panel with Control system I/O modules Drain 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 22: Door And Door Lock
Service Manual 4 Door and door lock The door and door lock consists of the following parts: Slip lock door handle Door Door glass Door gasket Locking shaft Trim panel Support frame Door lock 4.1 Description The door glass is attached in the door rim by the door gasket. The door seals the opening by the door gasket that prevent the door from leakage.
Page 23 Service Manual Door lock The door lock actuator is a bi-stable which means it has two stable positions; locked or unlocked. The door lock unit locks the door when the wash program has started, water level switch B2 confirm no water, the motor control unit confirm stand still and rotation sensor B3 confirm no drum rotations.
Page 24 Service Manual Emergency opening button An emergency opening button (A) is located on the side of the door lock unit and can be used to open the door in case of emergency. On soft mounted machines the emergency opening button can be reached by pushing the drum assembly backwards.
Page 25: Replacements And Adjustments
Service Manual 4.2 Replacements and adjustments 4.2.1 Replacement of the door Disconnect the power to the machine. Demount the door hinges from the trim panel and remove the door. fig.X00126 Mount the new door by the door hinges on the trim panel. Function check Check the function by closing and opening the door several times.
Page 26: Replacement Of The Door Handle
Service Manual 4.2.2 Replacement of the door handle Disconnect the power to the machine. Remove the plastic cover on the door handle. Be careful not to damage the door handle. fig.8068 Remove the center screw (A) and demount the door handle. fig.X00018 Mount the new door handle and tighten the center screw to 15 Nm / 11 lbf-ft.
Page 27: Replacement Of The Door Lock Unit
Service Manual 4.2.3 Replacement of the door lock unit Disconnect the power to the machine. Demount the top panel. Demount the front panel and the brace. fig.X00127 Demount the door. fig.X00128...
Page 28 Service Manual Remove the three rubber strips around the trim panel. fig.X00129 Press the drum assembly backwards to reach the clips holding the door lock cable and the level hose. Loosen the clips for the door lock cable on the left side from the trim panel. Loosen the clips for the level hose on the right side from the trim panel.
Page 29 Service Manual Demount the trim panel. fig.X00131 Disconnect the door lock cables and demount the door lock. fig.X00132 Mount the new door lock and connect the cables. Refit the door lock cable and the level hose. Make sure they get in position. Remount the trim panel.
Page 30: Problems And Solutions
Service Manual 4.3 Problems and solutions 4.3.1 Door knob creating noise or feeling loose Problem The center screw inside the door knob is loose or is not tightened enough. This is causing the door handle to feel loose and/or creating noise. Solution Hold the L-pin on the axis still against one side on the door and turn the knob in each direction.
Page 31: Motor And Motor Control
Service Manual 5 Motor and motor control 5.1 Motor control unit The motor control unit communicates with the control system via a serial (input/output) interface. With the aid of the motor control unit the control system can control not only the speed of the motor at any given point, but also the ac- celeration or deceleration rate at which the motor is to achieve the speed required.
Page 32: Replacement Of The Belt
Service Manual Demount the motor. fig.7766 Mount the new motor. Connect the motor cable and refit the earth screw. Mount the cover panel to the motor cable. Fasten the belt. Make sure the belt is in position. Check the belt tension. Mount the rear panel.
Page 33: Belt Tension
Service Manual 5.3.1 Belt tension fig.7769A The belt tension should be according to the table. Model A = Force (N) B = Post tensioning (mm / C = New belt (mm / inch) inch) WLD720 9 / 3/8 8 / 5/16 WLD725 8 / 5/16 7 / 1/4...
Page 34: Adjusting The Belt Tension
Service Manual 5.3.2 Adjusting the belt tension 5.3.2.1 WLD720, WLD725 To adjust the belt tension, first undo the motor retaining screw (1) a couple of turns, then press down on the motor to achieve proper tensioning. Lock the locking nut (2) when the tension is correct, then lock the motor retaining screw (1). fig.7769...
Page 35 Service Manual 5.3.2.2 WLD730, WLD745, WLD762, WLD777 To adjust the belt tension, first undo the motor retaining screw (1) a couple of turns to increase or decrease the belt tension. • Increase the belt tension by turning the screw (2) clockwise. •...
Page 36: Heating
Service Manual 6 Heating 6.1 Replacement of heating element Disconnect the power to the machine. Demount the front panel. Remove the cover to the heating elements. Disconnect the connectors to the heating elements. fig.7767 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.
Page 37: Drum
Service Manual 7 Drum 7.1 Replacement of drum Disconnect the power to the machine. Demount the back panel. Demount the drain and hoses to the drum. Drain and type of hoses are depending on machine model, for more infor- mation refer to the spare parts list. Demount the air hose and the hose from the detergent compartment on top of the drum.
Page 38 Service Manual Remove the screws in the on the side panels. Tilt the cabinet backwards a little bit so it is possible to pull out the drum. Carefully pull out the drum. fig.7786 Mount the new drum. Fasten the tension strap. Tightening torque 26 Nm. Fasten the screws to the cabinet.
Page 39: Replacing Bearings
Service Manual 7.2 Replacing bearings Complete tool kit, part No: 472 9913-60 fig.7038 1. 432 1723-01: Drift for gaskets (EX618/718, 625/725, E/W/SU630/730, WUD718, WUD725, WUD730, WUD745, WUD760, WUD775, WED720, WED725, WED730, WED745, WED762, WED777, WLD720, WLD725, WLD730, WLD745, WLD762, WLD777) 2.
Page 40: Remove The Pulley
Service Manual 7.2.1 Remove the pulley Remove the C-clamp from the drum shaft. Mount the puller with puller drags on shaft and pulley. fig.7033 Warm the pulley around the shaft so that the aluminium expands slightly. Then it is easier to pull off the pulley. fig.7034 Pull off the pulley.
Page 41: Demount The Bearing
Service Manual 7.2.2 Demount the bearing Remove wedge from shaft. Measure the distance (A) between bearing and end of shaft. B = Shaft C = Bearing fig.6999 Loosen the bolts in the bearing house. fig.7039 Mount two bolts in threaded holes and press until the bearing house is loose. fig.7040...
Page 42 Service Manual If the front bearing is still on the shaft, use the puller to remove it. In order to be able to put the puller blocks under the bearing, push the rear gable a little. Do not attempt to remove the rear gable when the bearing is still on the shaft. It will result in a damaged lining.
Page 43 Service Manual Bearing kit fig.7046 472 9913-12: EX618, E/W620, WUD718, WED720, WLD720 472 9913-13: EX625, E/W630, WUD725, WUD730, WED725, WED730, WLD725, WLD730 472 9913-15: E/W655, WUD760, WED762, WLD762 472 9913-14: E/W640, WUD745, WED745, WLD745 472 9913-16: E/W675, WUD775, WED777, WLD777 Tap the bearing gently into the housing with drift and washer.
Page 44 Service Manual Mount the sealing rings. A = Bearing housing B = Sealing rings fig.7000 Put some grease on the inside of the bearing housing. Then it is easier to mount the sealing rings. fig.7051 Place the first sealing on the drift with the opening up. Tap carefully it down in the bearing housing. Push it down until it stops.
Page 45 Service Manual Fill the second sealing with Amblygon grease. Place the spacer and sealing on the drift. Press down the drift to the bottom. fig.7054A Mount the third sealing. The lip shall lay against the housing. Don't push too far as the lip can break. Thread the shaft end with M10 and min 20 mm deep.
Page 46 Service Manual Mount the rear gable over the drum shaft. Be sure to put it on horizontally so that the sealings don't get damaged on the shaft. Mount the adaptor on the shaft end and thread it down to the bottom. fig.7059 Mount presser, washer, nut and puller bolt.
Page 47 Service Manual Mount the wedge on the shaft. Mount pulley, sleeve, washer, nut and puller bolt onto the shaft. Thread the bolt to the adaptor on the shaft. Press the pulley onto the shaft. It is easier if the pulley is heated. fig.7061 Lock the pulley with the C-clamp.
Page 48: Drain
Service Manual 8 Drain 8.1 Drain valve The water pressure in the cold water intake is used for closing the drain valve. There is a hose (1) connected be- tween the water intake and the control valve (2). When the control valve is activated (closing the drain valve) it opens and lets water into the supply line (3) which is connected to the drain valve.
Page 49 Service Manual Loosen the hose clamps (A) and demount the hose from the drain valve. Remove the hose from the valve’s nipple for water supply (B). (Press the orange ring and pull out the hose at the same time). Loosen and unscrew the four retaining nuts of the valve a couple of turns (use a socket, extender and ratchet wrench).
Page 50: Electrical Drain Valve
Service Manual 8.2 Electrical drain valve An electrical drain valve is a normally open (NO) valve and stays open by the return spring. The valve closes by a motor that operates the built-in flap that closes the drain and keeps it closed as long as there is power to the motor. The drain opens by a return spring when the motor is powered off.
Page 51 Service Manual Loosen the hose clamps and demount the hoses (A) from the drain valve. Disconnect the cables (B) from the drain valve. Loosen the bolts (C) and demount the electrical drain valve from the mounting plate. Check and clean the drain hoses if necessary before remounting the drain valve. fig.W00892A Mount the new electrical drain valve on the mounting plate and tighten the bolts.
Page 52: Detergent Container
Service Manual 9 Detergent container Water connections into the detergent container are fitted with dispensers 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.
Page 53: Replacement Of Detergent Container
Service Manual 9.1 Replacement of detergent container Demount the top panel. Loosen the hose clamps and demount the hoses to the detergent container. Remove the detergent container and mount the new one. Connect the hoses and fasten the hose clamps. fig.7758...
Page 54: Control Panel
Service Manual 10 Control panel 10.1 Control system 10.1.1 Description The control system CPU is electronic and comprises a circuit board containing microprocessor, program memory, se- rial interface to the motor control, I/O-boards etc. The control system CPU receives its power from a separate power supply unit. fig.7763 The control system receives information about inputs like temperature sensor, level sensor, door status and activates outputs like water valves, drain and heat control.
Page 55: 2Connections
Service Manual 10.1.2 Connections The control system CPU and I/O module type 10 has the following connections: Board connector Function M-COM Communication, motor control D-BUS Databus D-BUS Databus TACHO Tachometer COIN Coin meter (coin 1, coin 2, blocking) price programming INP 1 Input 1, stop button INP 2...
Page 56: 3Replacement Of Control System Cpu
Service Manual 10.1.3 Replacement of control system CPU 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. fig.7492 Continue turning a quarter of a turn until it is possible to remove the control knob.
Page 57 Service Manual 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 control system CPU Demount the cover and disconnect the cables.
Page 58 Service Manual Demount the control knob unit from the control system CPU by unscrewing the screw (A) a bit (4–5 mm) until the con- trol knob unit loosens. Demount the two grounding brackets (B). fig.7640 Demount the I/O module type 10 from the control system CPU by unscrewing the screw (C) a bit (4–5 mm). Remove the I/O module type 10 by lifting it upwards.
Page 59 Service Manual Mount the new control system CPU Start by mounting the control knob unit on the control system CPU. Fasten the screw (A). Mount the I/O module type 10 and fasten the screw (C). Mount the two grounding brackets (B) on the new control system CPU. Mount the control system CPU on the control panel and make sure that the guide pins (D) are in position.
Page 60 Service Manual 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 61: Control Knob
Service Manual 10.2 Control knob 10.2.1 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 62 Service Manual 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 63: Usb Connection
Service Manual 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 10.3 USB connection To open the USB connection; use a screwdriver to carefully press and open the lid. fig.W00416...
Page 64: O Modules
Service Manual 11 I/O modules 11.1 General The machine can be equipped with either two or more 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, water valves, drain etc.
Page 65 Service Manual Remove the electrical connections on the module. (Note the position of the connections). Remove the module by pulling it upwards. fig.7799 Insert the new module and make sure it is in position. Connect the electrical connections in the same way as before. Mount the cover.
Page 66 Service Manual Insert the new module and make sure it is in position. Connect the electrical connections in the same way as before. Remount the cover panel. Connect the power to the machine. I/O module type 10 Disconnect the power to the machine. Demount the top panel.
Page 67: Functions For I/O-Cards
Service Manual 11.3 Functions for I/O-cards The electrical schematic can be one of the following: 11.3.1 External coin meter/Central payment (2A) The signal received from external coin meters must be a pulse between 300–3000 ms (500 ms is recommended) with a minimum pause of 300 ms (500 ms is recommended) between two pulses. fig.6606A...
Page 68: Central Payment (2B)
Service Manual 11.3.2 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 69: Central Payment (2C)
Service Manual 11.3.3 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 70: Outputs For Detergent Signals And Inputs For Pause Signals, "Empty" Signal And Price Reduction (2D)
Service Manual 11.3.4 Outputs for detergent signals and inputs for pause signals, "empty" signal and 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. This function has a number of uses, including providing reductions during a specific period of the day.
Page 71: Central Booking/Payment (2F)
Service Manual 11.3.5 Central booking/payment (2F) The central payment or booking system shall provide 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 72: Machines With I/O Module Type 3
Service Manual 11.3.6 Machines with I/O module type 3 By maintaining an active (high) signal on connection 3 "Price reduction”, the price of the program can be reduced. This function has a number of uses, including providing reductions during a specific period of the day. Whilst the sig- nal remains active (high), the price of the program is reduced by the percentage entered in the price programming menu.
Page 73: Troubleshooting
Service Manual 12 Troubleshooting 12.1 General The troubleshooting section is used to trace errors in the machine to a defective component or unit. There is a memory in the control system that will save the selected program for 10 minutes in the case of power fail- ure.
Page 74: Error Code
Service Manual 12.2 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”. The errors will be displayed as for example 11:2 DOOR OPEN.
Page 75 Service Manual Error code Text Major Minor DRUM POSITIONING TIMED OUT MAIN BARRIER DRUM LOCKING / UNLOCKING INNER DOOR OPENING INNER DOOR JACK POSITION DOOR UNLOCKING DRUM LOCK POSITION SWITCH DRUM NOT ROTATING UNBALANCE SWITCH ON AT PROG START WATER IN DRUM - CALL SERVICE WATER IN DRUM - CALL SERVICE UNLOADING DOOR NOT LOCKED LOADING DOOR NOT LOCKED...
Page 76 Service Manual Error code Text Major Minor SECURITY INPUT DRUM MOTOR KEB OVERVOLTAGE UNDERVOLTAGE PHASE FAILURE OVERCURRENT OVERHEAT INTERNAL NO OVERHEAT INTERNAL OVERHEAT POWER MODULE DRIVE OVERHEAT NO DRIVE OVERHEAT POWER UNIT POWER UNIT NOT READY POWER UNIT INVALID LOAD SHUNT FAULT OVERLOAD NO OVERLOAD OVERLOAD 2...
Page 77 Service Manual Error code Text Major Minor CHARGE CIRCUIT INTERNAL COM. I/O TYPE SET SIGNAL, NO TACHO. WAIT 5 MINUTES ACTUATOR CIRCUIT CHARGE CIRCUIT SET SIGNAL, NO TACHO. WAIT 5 MINUTES ACTUATOR CIRCUIT Error code Text Major Minor I/O TYPE 6 INTERNAL ERROR INTERNAL COM.
Page 78: Description Of Error Codes And Causes
Service Manual 12.3 Description of error codes and causes MAIN COMMON 10:1 INTERNAL ERROR CPU TACHO Tacho input on CPU delivers values that is out of range. Recommended actions: 1. Run motor on highest possible speed in service mode. Check input value for RPM speed. 2.
Page 79: Main Washer
Service Manual MAIN WASHER 11:1 NO WATER This error is shown if the programmed water level is not reached within a certain time, typically 10 minutes. Max. filling time is defined in Config. 1 parameter MAX FILL TIME. This error message can be turned off in Configuration - Error code. Possible causes: Long filling times can be caused by a leaking drain valve, blocked filler valve, defective filler valve, defective valve control board, clogged level sensor hose, leaking level system, etc.
Page 80 Service Manual 11:5 WATER HIGH TEMP This error code is shown if the temperature sensor indicates temperature above + 98°C/208°F. Maximum allowed temperature is defined in Config. 2 parameter MAX PROG TEMP. Possible causes: This high temperature means that the resistance in the sensor is too low (< 350Ω on all machines except Barrier Washers) or too high (>137Ω...
Page 81 Service Manual 11:9 DRUM OVERFILLED This error code is shown if the mechanical level sensor connected to input DRUM OVERFILLED detects a high level (used primary in W&D machines) Possible causes: This error code can be caused by for example water inlets not closing correctly, faulty level switch, blocked level hose, drops of water in the level hose, foam in drum or level hose, etc.
Page 82 Service Manual 11:27 LEVEL OFFSET This error code is shown at program start if the level sensor indicates a level above what the control system CPU can compensate for. If high level is indicated a attempt is made to first drain the machine. Maximum allowed level offset is defined in Config.
Page 83 Service Manual 11:127 DRAWER OUT CLOSE TO START This is only a warning message. Shown if input DETERGENT BOX SENSOR is active at program start or during program run if water is supposed to flush in detergent compartment. The program will pause until input DETERGENT BOX SENSOR is deactivated. The function to check for open detergent box can be turned off in Config 1 DETERGENT BOX SENSOR.
Page 84: Main Dryer
Service Manual MAIN DRYER 12:1 O.H. THERMOSTAT - INLET AIR This error code is shown if the input O.H. INLET AIR is deactivated. Normally this is due to that protection thermostat for inlet air has trigged due to overheating. The overheating thermostat for inlet air needs to be mechanically restored. Cut power and turn off gas supply (if gas heated) and check contactors/heat relays before restoring the thermostat.
Page 85 Service Manual 12:4 INLET AIR SENSOR - SHORT-CIRCUITED The error code is shown if the analog input INLET AIR TEMP (PT100) is reading a resistance of less than 100 Ω. Probably caused by broken PT100 sensor or damaged wiring. If the inlet air temperature in the SHOW INPUTS menu show a temperature of 0 °C the inlet air sensor is shorted. When the inlet air sensor is restored the error code is automatically reset and the ongoing program will continue.
Page 86 Service Manual 12:6 OUTLET AIR SENSOR - SHORT-CIRCUITED The error code is shown if the analog input OULET AIR TEMP (NTC) is reading a resistance of less than 330 Ω. Probably caused by broken NTC sensor or damaged wiring. If the outlet air temperature in the SHOW INPUTS menu shows a temperature of 100 °C the outlet air sensor is shorted.
Page 87 Service Manual 12:10 HP HIGH PRESSURE CHECK COOLING SYSTEM AND FILTERS The error is activated if the input HP HIGH PRESSURE (high pressure switch, P1) has tripped. The errror can be trigged if there is no cooling water to machine or if the airflow is obstructed, by lint, overload, etc. The error can be restored with the knob when the pressure is restored and the ongoing program will continue.
Page 88 Service Manual 12:14 GAS ERROR PRESS GAS RESET BUTTON The error code is shown if input GAS ERROR is activated. This means that no flame has been detected by the gas control box. The metal probe of the flame sensor generates an electrical current when exposed to the burner's flame. This signal is detected by the ignition control module which, in turn, cuts off the gas valve immediately if the sensor does not indi- cate flame within 3 attempts at each 10 seconds.
Page 89 Service Manual 12:18 REDISTRIBUTION OF LOAD NEEDED The error code is shown if the input VACUUM has deactive several times during program run and the function to han- dle vacuum error during program run has failed to recreate vacuum in the machine. The error code is reset from the control system by a short press on the control knob/start button.
Page 90: Main Barrier
Service Manual MAIN BARRIER 13:1 DRUM POSITIONING TIMED OUT The error code is shown if input POSITION DRUM 1 and POSITION DRUM 2 is not activated within set time in Con- fig parameter DRUM POS TIMEOUT. Recommended actions: 1. Check inputs from positioning sensors DP1 and DP2. 13:2 DRUM LOCKING / UNLOCKING The error code is shown if drum is not able to unlock/lock when expected.
Page 91 Service Manual 13:6 DRUM LOCK POSITION SWITCH The error code is shown if inputs DRUM UNLOCKED and DRUM LOCKED are both active or inactive at the same time during program run. Since it occurs during program run it is required to turn power off to the machine to clear the error message.
Page 92 Service Manual 13:11 UNLOADING DOOR NOT LOCKED This error code will be shown if the control system has not detected the input UNLOADING DOOR LOCKED to be ac- tive within a certain time after closing the unloading door. Possible causes: This can be caused by a mechanical problem preventing door lock to lock, defective door lock, loose cable connec- tion to door lock, broken cables to door lock or mechanical problem with emergency opening of the door.
Page 93: Main W&D
Service Manual 13:16 DRUM LOCK POSITION SWITCH The error code is shown if inputs DRUM UNLOCKED and DRUM LOCKED are both active or inactive at the same time during positioning sequence. By pressing the start button it is possible to have another trial. Possible causes: Heavy unbalance in drum that prevents the motor to position the drum.
Page 94: Main Dryer
Service Manual MAIN DRYER 15:2 UNLOADING DOOR OPEN Only on Pocket washer: This error code will be shown if the control system detects that the input DOOR CLOSED 2 (unloading side) has been deactivated during an on-going program. The error can only occur during an on-going program. Possible causes: This can be caused by for example a bad or defective door lock, loose cable to door lock, problem with door lock edge connection, defective input on I/O unit type 10 etc.
Page 95: Drum Motor Common
Service Manual DRUM MOTOR COMMON 20:1 O.H. DRUM MOTOR This error code will be shown if the control system detects that the input OH DRUM MOTOR is deactivated during program run. 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 96: Drum Motor Ewd
Service Manual DRUM MOTOR EWD 21:1 HEATSINK TOO HOT This error code is generated by the MCU for drum motor. There is a temperature sensor (NTC) mounted on the MCU cooling flange next to the power transistors in the output stage.
Page 97 Service Manual 21:3 NO INTERLOCK This error code is generated by the MCU for drum motor. 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 98 Service Manual 21:6 INTERLOCK HARDWARE This error code is generated by the MCU for drum motor. The MCU must be powered with 230V / 50 or 60 Hz on the interlock input in order to drive the motor. The interlock cir- cuits in the MCU have been split into two channels so that a component error in MCU cannot give a false confirma- tion that the door is locked.
Page 99 Service Manual 21:15 MOTOR NOT FOLLOW This error code is generated by the MCU. The MCU must always receive information on the rotation of the motor from the tacho sensor in order to rotate. If the tacho sensor is not working, the motor can rotate for max. 10 seconds during the starting process.
Page 100: Drum Motor Keb
Service Manual DRUM MOTOR KEB 22:0 SECURITY INPUT Machine indicates that Interlock signal is missing to MCU. Internal MCU error code STO. The interlock signal is missing to MCU STO1+ or STO2+ inputs when expected to be active. Recommended actions: 1.
Page 101 Service Manual 22:6 OVERHEAT INTERNAL The Motor Control Unit indicates error E.OHI. Internal overheating in frequency controller. Can only be reset when internal temperature has dropped by 3 °C. This is indicated by message E.nOHI. See also error code 22:7. Internal message 6.
Page 102 Service Manual 22:12 POWER UNIT The Motor Control Unit indicates error E.Pu. General power circuit fault. Internal message 12. Recommended actions: 1. Switch off the main power to machine for 5 minutes. 2. Restart the machine. 22:13 POWER UNIT NOT READY The Motor Control Unit indicates message nO_PU.
Page 103 Service Manual 22:17 NO OVERLOAD The Motor Control Unit indicates error E.nOL. Overload counter is reset to 0%. See also error 22:16. Internal message 17. 1. Switch off the main power to machine for 5 minutes. 2. Restart the machine. 22:18 BUS The Motor Control Unit indicates error E.buS.
Page 104 Service Manual 22:23 BUS SYNCHRON. The Motor Control Unit indicates error E.SbuS. Problem with Bus synchronization. Internal message 23. 1. Switch off the main power to machine for 5 minutes. 2. Restart the machine. 22:30 MOTOR PROTECTION The Motor Control Unit indicates error E.OH2. Electronic motor protection relay has tripped.
Page 105 Service Manual 22:47 PROTECT. ROT. REVERSE The Motor Control Unit indicates error E.Prr. Reverse (left) limit switch is activated. Not used in this application. Internal message 47. 22:49 POWER UNIT CODE INVALID The Motor Control Unit indicates error E.Puci. Power unit code invalid. During initialization the power unit was not recognized or identified as invalid. Internal message 49.
Page 106 Service Manual 22:57 INITIALISATION MFC The Motor Control Unit indicates error E.InI. MFC not booted. Internal message 57. 22:58 OVER SPEED ERROR over speed in KEB Motor Control Unit. Internal message 105. Recommended actions: 1. Restart the machine. 22:87 OVERHEAT INT. Warning: The Motor Control Unit indicates A.OHI.
Page 107 Service Manual 22:92 NO OVERHEAT INT. Warning: The Motor Control Unit indicates A.nOHI. Overheat internal is reset. See also error code 22:87. Internal message 92. Recommended actions: 1. Restart the machine. 22:93 BUS Warning: The Motor Control Unit indicates A.buS. Timeout of monitoring time of communication between bus operator and inverter (Watchdog).
Page 108 Service Manual 22:99 OVERLOAD 1 Warning: The Motor Control Unit indicates A.OL. Overload counter has reached 100%. The warning can only be reset after overload counter has reached 0% again. This is indicated by the message A. nOL. See also message 22:98. Internal message 99.
Page 109: Drum Motor Obiwan
Service Manual DRUM MOTOR OBIWAN 23:1 HEATSINK TOO HOT This error code is generated by the MCU for drum motor. There is a temperature sensor (NTC) mounted on the MCU cooling flange next to the power transistors in the output stage.
Page 110 Service Manual 23:3 NO INTERLOCK This error code is generated by the MCU for drum motor. 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 111 Service Manual 23:6 INTERLOCK HARDWARE This error code is generated by the MCU for drum motor. The MCU must be powered with 230V / 50 or 60 Hz on the interlock input in order to drive the motor. The interlock cir- cuits in the MCU have been split into two channels so that a component error in MCU cannot give a false confirma- tion that the door is locked.
Page 112: Fan Motor Common
Service Manual 23:15 MOTOR NOT FOLLOW This error code is generated by the MCU. The MCU continuously estimates the motor speed. If the estimated speed is less than 180 rpm 10 seconds after drive command, or higher than 180 rpm 60 seconds after stop command, the error will be shown.
Page 113: Internal Com
Service Manual INTERNAL COM. 40:1–40:10 I/O INTERLOCK Axxx This error code will be shown if the control system detects that the input IO INTERLOCK is not active. I/O unit desig- nation, Axxx, that is shown in the error description is according to electric schematics and electrical component list. Recommended actions: 1.
Page 114 Service Manual 40:22 I/O BOARD MISHMASH The error code is shown if wrong Type of I/O unit is fitted. Could also occur if adressessing of the I/O units is made in a incorrect way. After addressing of I/O units the CPU reads the Type of each unit. If there is a mismatch between what the Type of I/O unit the CPU finds, and what the I/O unit type the software con- figuration expects, the error will be shown.
Page 115: Internal Com. I/O Type 10
Service Manual INTERNAL COM. I/O TYPE 10 41:1 CHARGE CIRCUIT The DLCU on I/O board type 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. If the arming circuit for operating the door lock is charged when it is not supposed to be, an error message will be sent to the CPU.
Page 116 Service Manual 41:21 CHARGE CIRCUIT Only on Pocket washer. Pocket washer uses two I/O boards type 10, one for the "Loading side" and one for the "Unloading side". This error relates to I/O board type 10 on "Unloading side". See also corresponding error 41:1 for I/O type 10 on "Loading side". The DLCU on I/O board type 10 contains an arming circuit that is charged when the door lock coil is to be activated.
Page 117: Internal Com. I/O Type 6
Service Manual INTERNAL COM. I/O TYPE 6 42:1 I/O TYPE 6 INTERNAL ERROR I/O unit type 6, reading of internal analog values out of range. Possible causes: • Intermittent error in wiring to I/O type 6 unit. • Internal error in I/O type 6. Recommended actions: 1.
Page 118: External Com. Cmis
Service Manual EXTERNAL COM. CMIS 52:1 CMIS COMMUNICATION ERROR Communication between machine and CMIS computer has been interrupted. The warning will be shown at program start for 5 seconds, the next 5 programs. It is then removed automatically. After the warning message has disapeared the machine will start, but no CMIS data statistics/data will be logged. Possible causes: •...
Page 119: Internal
Service Manual INTERNAL 60:5 FATAL ERROR INVALID RUNNING MODE The control system has an internal error during memory read. Recommended actions: 1. Press the control knob/start button to retry. 2. If problem persists, upload new software. 60:11 FATAL ERROR EXTERNAL FLASH WRITE The control system has an internal error during memory read.
Page 120: Maintenance
Service Manual 13 Maintenance 13.1 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. •...
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