ASKO Service Workshop Repair manual Dishwasher - DW90

Service manual Dishwasher - DW90 Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 2 Downloaded from www.Manualslib.com manuals search engine

Type: DW90 Service manual Contents Updates .................................................................................................................................................................................................................................................. 4 Introduction ......................................................................................................................................................................................................................................... 5 Troubleshooting strategy ............................................................................................................................................................................................................ 6 Types ........................................................................................................................................................................................................................................................ 7 Technical data...................................................................................................................................................................................................................................... 8 Component description ............................................................................................................................................................................................................... 9 Components and measurement values ......................................................................................................................................................................... 9 Components and function description ...................................................................................................................................................................... 10 Programs and control unit........................................................................................................................................................................................................ 18 Wiring diagram ......................................................................................................................................................................................................................... 18 Program ﬂow description.................................................................................................................................................................................................... 20 Troubleshooting.............................................................................................................................................................................................................................. 22 Dishwashing results ............................................................................................................................................................................................................... 22 Common faults.......................................................................................................................................................................................................................... 22 Water level DW90.................................................................................................................................................................................................................. 23 Fault indicators .......................................................................................................................................................................................................................... 24 Fault and information codes .............................................................................................................................................................................................. 25 DW90.1 ................................................................................................................................................................................................................................... 25 DW90.2 ................................................................................................................................................................................................................................... 26 DW90.3 ................................................................................................................................................................................................................................... 27 Service menu and settings........................................................................................................................................................................................................ 28 Service menu DW90.1 ......................................................................................................................................................................................................... 28 Service menu DW90.2 ......................................................................................................................................................................................................... 30 Service menu DW90.3 ......................................................................................................................................................................................................... 32 Settings ........................................................................................................................................................................................................................................... 34 Tools ................................................................................................................................................................................................................................................. 34 Special tools ................................................................................................................................................................................................................................ 34 Service and installation ............................................................................................................................................................................................................... 36 Increased working space during service ..................................................................................................................................................................... 36 Overﬂow guard wiring .......................................................................................................................................................................................................... 37 Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 4 Rev Date Description Initials 01 2011-04-15 First version FH 02 2011-05-12 Front display 90.2, service menu 90.1 and 90.2 and also some minor text updates FH 03 2011-05-27 90.1 OTHER included FH 04 2011-06-08 Instruction for ”Increased working space during service” updated FH 05 2011-11-29 Updated wiring diagram and added information about Anti siphon ISC 06 2012-02-02 Updated service menu for 90.2. Changed description how to set TDE & HWC. AN 07 2012-03-16 Instructions updated for 90.2. Store program added. EH 08 2012-04-23 Service menu for 90.2 updated. Description added for Total reset (TDE & HWC). EH 09 2012-05-21 Information for Region settings updated. EH 10 2012-09-06 Program ﬂow description for the Daily wash program included. EH Updates Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 5 Introduction You are holding the Service manual for the DW90 generation of dishwashers. The DW90 dishwasher series is available in three different basic models, designated DW90.1, DW90.2 and DW90.3. In the Types section, we present the various panels found on each type, making it easy to identify the different machines. The different models are named differently in different markets. The type designation is most important when identifying a particular machine model. This information can be found on the serial number plate on the right of the inside of the door, where the machine’s model designation is specified. The first two digits of the serial number specify the year of manufacture while the third and fourth digits specify the week of manufacture. The remaining digits form the sequential number. It should be easy to service a dishwasher. It is important that you, as a service technician, are afforded conditions that enable you to work in an efficient and satisfactory way. Our hope is that this service manual will prove a useful tool in your daily work. Asko Appliances AB SE-534 82 Vara Sweden OPERATING INSTRUCTIONS Always have the operating instructions for the machine available during service SERIAL NO MODEL TYPE Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 6 Troubleshooting strategy Troubleshooting is an important part of the service callout, and as such we have drawn up a troubleshooting strategy that describes, in broad terms and step by step, what you need to do to ﬁnd and diagnose faults arising in our machines. • Ask the customer to describe the problem. • Check whether the customer’s description matches the reported fault. • Check that the machine is correctly installed: - Electrical connection - Drainage - Water connection - Machine correctly levelled Fault found? Incorrect installation or external factors that affect performance and functionality (for example, water pressure, electrical supply, drainage). The machine operates normally. No deviations can be found. The customer probably needs to be informed about proper use of the machine. If necessary, also inform the customer about the warranty conditions and the fact that the customer will be charged for the service call. Yes Open the service menu: 1. Check the settings 2. Run a test cycle 3. Note any fault codes If the above actions do not uncover the fault: • Conduct general troubleshooting. Use the documentation available at ServiceSaver (service manuals, service memos, wiring diagrams and other documents). Yes No No Fault diagnosed? Repair and check function/safety. Carry out the actions suggested by technical support. Satisﬁed customer! OK? No Yes No Yes Fault found? Contact technical support for assistance. Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 7 DW90.2 The machine has 9 set programs, but can be speciﬁed with up to 16 programs. The touch buttons and display are usually found on the top. Certain variants are supplied with a display on the front. Types DW90.1 - BRAND ASKO The machine has 6 set programs and 2, 3 or 5 options that can vary depending on the variant. The touch buttons and display are found on the front of the panel. The main power switch is on the top. PROG START STOP DW90.3 The machine has 16 set programs and the touch buttons and display are on the top. The number of options and settings vary depending on the speciﬁcation of the machine. START PROG STOP Display on the front DW90.1 - BRAND OTHER The machine has 6 set programs and 2, 3 or 5 options that can vary depending on the variant. The touch buttons and display are found on the front of the panel. The main power switch is on the top. Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 8 Height: 823-870 mm (32-1/4” to 35-1/2”) = for 820 mm machines (XL) 863-910 mm (33-3/4” to 36”) = for 860 mm machines (XXL) Width: 596 mm (23-5/8”) Depth: 550 mm (22”) Weight (freestanding): 56 kg/59 kg (124 lbs/130 lbs) with water softener (XL) 57 kg/60 kg (126 lbs/132 lbs) with water softener (XXL) Weight (integrated): 49 kg/52 kg (108 lbs/115 lbs) with water softener (XL) 50 kg/53 kg (110 lbs/117 lbs) with water softener (XXL) Water pressure: 0.03–1.0 MPa (0.3–10 kp/cm 2 ) (4.2-140 psi) Connection: 1-phase, 230 V, 50/60 Hz, (10 A/16 A)** 1-phase, 120 V, 60 Hz, (15 A)** 3-phase, 400 V, 50/60 Hz, (10 A) ** Max. rated power: 1700 W (230 V)** 1300 W (120 V)** 2200 W (400 V)** * According to EN 50242 standard. ** See type plate. Technical data Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 9 Components and measurement values The speciﬁed resistance values apply at room temperature (about 20°C/68°F) Values within ±10% are considered normal. Component description Article no. Position Component Measurement value 8073779 EMC-ﬁlter with inductor 680 kohm 8083041 Filter with screwplint 1 Mohm 8079504 Heating element 1600 W 230 V 32 ohm 8079505 Heating element 1200 W 120 V 12 ohm 8078096 Thermistor 60 kohm 8083094 Combi disp. 230 V 1,32 kohm 8083095 Combi disp. 120 V 285 ohm 8078080 8078080 Circ.pump 220-240 V 50 Hz, 47 L (12.4 gallon)/min Primary winding 115 ohm Circ.pump 220-240 V 50 Hz Auxiliary winding 260 ohm 8078082 8078082 Circ.pump 120 V 60 Hz, 47 L (12.4 gallon)/min Primary winding 31,4 ohm Circ.pump 120 V 60 Hz Auxiliary winding 76 ohm 8078087 Drain pump 200-240 V 50 Hz, 16 L (4.2 gallon)/min 148 ohm 8078089 Drain pump 120V 60 Hz, 16 L (4.2 gallon)/min 26 ohm 8078084 2-3 Spray arm diverter 230 V 50/60 Hz 8,5 kohm 8078085 2-3 Spray arm diverter 120 V 60 Hz 2,6 kohm 8079502 Inlet valve single 200-240 V, 4 L (1 gallon)/min 3,9 kohm 8079503 Inlet valve single 120 V, 4 L (1 gallon)/min 0,95 kohm 8079500 Inlet valve security 220-240 V, 4 L (1 gallon)/min 2 kohm 8079501 Inlet valve security 120 V, 4 L (1 gallon)/min 0,5 kohm 8078090* 8078090* Water softener salt valve 220-240 V 3 kohm Water softener mix valve 220-240 V 2,33 kohm 8078302* 8078302* Water softener salt valve 120 V 0,65 kohm Water softener mix valve 120 V 0,65 kohm 8073830 Halogen lamp 5 W/12 V <10 kohm 8084147 Thermo Actuator 110-240 V 0,85-1,2 kohm 8089578 Fan motor 230 V 0,85 kohm 8089580 Fan motor 120 V 185 ohm * The number is for a complete water softener; replacement salt and mixer valves are not available separately. Downloaded from www.Manualslib.com manuals search engine

Service manual DW90 10 Inlet valve The inlet valve has an electrical connector that is coded to ensure it is not mixed up. It is fitted with a filter, which can be removed for cleaning. Both single and safety valves are used as inlet valves. The inlet valve contains a filter to stop particles then a flow limiter to limit the flow to a maximum of 4 L (1 gallon)/min. It opens when the water pressure exceeds 0.3 bar (4.3 psi) and provides full flow at about 2 bar (29 psi). It has a pressure range of 0.3 bar (4.3 psi) to 10 bar (145 psi). The inlet valve is fitted to the air gap and can be replaced from the rear of the machine. Purpose: To ensure that the machine is supplied with water for the different dishwashing cycles. Safety valve The safety valve has two independent valve seats, each controlled by a separate electromagnet. The valve seats are connected in series. This doubles the safety factor. The electromagnets are also connected in series (electrically), which means each magnet’s rated voltage is half the mains voltage (e.g., a 230 V valve = 2 x 115 V coils) Single valve The single valve comprises an electromagnet and a valve seat. Components and function description Here we describe the function and specification of the most important components. Certain components are found only in more highly specified machines or in particular markets. See the Troubleshooting section for fault and information codes. CU, Control Unit The CU, or Control Unit, is a unit that functions as both a control panel and a logic component. The control panel is fitted with a display and touch buttons for selecting programs, options and Start/ Stop. The control panel is an integrated part of the CU and cannot be replaced separately. The logic component manages functions needed for dishwashing programs and diagnosis. The CU has an internal power supply for the logic. In the event of a fault, the CU can diagnose a number of components and functions and display fault codes. To facilitate troubleshooting the service menu includes a component diagnostics function, which activates the outputs in a particular sequence. Accelerometer The control unit in DW90.2 contains an accelerometer, a sensor that senses position and acceleration. It controls the touch buttons and the brightness of the light. The accelerometer turns off at a specific angle to avoid causing a distraction when seen from the worktop. It is calibrated when the door is closed. If this symbol appears on the display the door is not open enough. Open the door until the display lights up. Component description Downloaded from www.Manualslib.com manuals search engine

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ASKO Service Workshop Repair manual Dishwasher - DW90

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