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background image

Part name

Funtion

NTC

Negative Temperature Coefficient Thermistor is integrated into sump,
which is used for measuring temperature of water in the tub.

Inspect

NTC

1.Open the protecting box and take out PCB(see the section“Part Name PCB”);
2.With the door closed,unplug the RE connector(shown in below picture), then use the
multi-meter

Ω

shelf to test resistance between two blue wires(RE and GND) , the normal

resistance is shown in below table

.

3. I f the resistance is not correct, it means NTC circuit has a problem. In this case, we
should check the connection first. If the problem hasn’t been solved by re-connection, we
would replace the NTC.

RE

GND

3

2

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Содержание DWS-22A Series

Страница 1: ...English Model SERVICE MANUAL DWS 22AXX WQP4 T2601C This manual is intend to guide after sale service please read the manual careful before service DISHWASHER ...

Страница 2: ...njury 1 or death of the user SAFETY INSTRUCTIONS CAUTION indicates high possibility of injury 2 or property loss 3 Detailed instructions would be indicated on the inside of the triangle or around the symbol in figuresor in writing The dishwasher cannot be used by persons including children with reduced These instructions are precautions to prevent the risks of serious injury or death of the user a...

Страница 3: ...ctric shock or fault and cause injuries Do not use damaged power lines power plug or loose power socket alcohol etc as well as dishes having such matters into the dishwasher Do not spray water directly onto the parts of the main body of the dishwasher This may cause accidents of electric shock or short circuit Do not damage power line Do not damage cut process power line or bend pull twist or bind...

Страница 4: ...ater or hot water heat appliances glasses Falling by opening and closing the door may cause injury Also spilled water may Do not place the dishwasher near fire Do not put the burning candle or cigarette on the dishwasher It may cause f ire Away from materials installation grounding dishwasher fault Do not change the plug without permission When the plug does not match the socket proper power socke...

Страница 5: ...Caution No pulling No use No washing ment No climbing plastic utensils without scald power plug Care about the door Care for Care for cleaning Attention ...

Страница 6: ...Prohibit to pinching Prohibit Prohibit hit or tap the dishwasher Prohibit due to clogging the dishwasher Prohibit Loading capacity Do not ...

Страница 7: ...n views 6 Replaceable Parts 9 Water tank 10 Door Assembly 12 Door Switch Assembly 14 Indicator Lamp 16 Fan Aseembly 17 Filter 18 Base Cover 19 PCB 20 Inlet valve 24 Drain pump 26 Heater 28 Washing pump 29 NTC 31 Flowmeter 33 Explore view of the product 35 Part list 37 Contents ...

Страница 8: ... 48 Trouble shooting flow logic chart 49 Schematics and Wiring Diagrams 54 Contents There is a program named Steam Wash This is the best washing performance For the first 5 minutes the product generates steam to soften the stains dirt and make it easily to remove Also steam has bacteria removal effect ...

Страница 9: ...Model Dimension mm Washing capacity AC 220V 50Hz 730 W 5 L 0 47 kwh 16 Kg 13 Kg 435mm 420mm 435mm 750mm Cross weight IPX1 02 WQP4 T2601C ...

Страница 10: ...information nor can it assume any liability in connection with it s use WARNING To avoid personal injury disconnect power before servicing this product If electrical power is required for diagnosis or test purposes disconnect the power immediately after performing the necessary checks RECONNECT ALL GROUNDING DEVICES If grounding wires screws strops clips nuts or washers used to complete a path to ...

Страница 11: ...Inlet water route Water flow diagram Cycle water route Drain water route Water tank Tub Inlet hose Optional Drain hose Drain pump Washing pump Inlet valve Water 04 ...

Страница 12: ...washing pump Heater Inlet water Inlet water Water tank Control panel steam outlet Operating principle Water flow Out door Basket cool air hot wet air Air flow 05 ...

Страница 13: ...Indicator Lamp Upper Spray Arm Under Spray Arm Interior View Filter Assembly Component Location Views 06 ...

Страница 14: ...Component Location Views Back view Note The view that removes back shell Water Tank Filter Right view Note The view that removes right shell Fan Left view Note The view that removes Left shell 07 ...

Страница 15: ...PCB Box Bottom view Note loose the screw to remove the base cover Component Location Views Water Inlet Valve Water Pump Assembly Heating Element Drain Pump Thermistor 08 ...

Страница 16: ...Replaceable Parts water tank Door Assembly Door Switch Assembly Indicator Lamp Fan Assembly Filter PCB Base Cover Washing Pump Water Inlet Valve Drain Pump Heater Element Flow Meter NTC 09 ...

Страница 17: ...supply to the dishwasher 2 Open the door 3 Remove 2 screws in the top of interior 4 Remove the top cover 5 Remove the top shell 6 Remove the back shell 1 2 3 7 Remove two side shells after loosen 6 screws 8 loosen 2 screws mark 1 9 Disconnect 3 wire harnesses from water tank mark 2 10 Disconnect pipe from water tank by removing snap ring mark 3 10 ...

Страница 18: ...Part name Funtion Water tank Steps of Disassemble The water tank stores water and provides water for the washing of machine 11 Disconnect 1 wire harness 12 Remove 2 screws 13 Water tank is got down 11 ...

Страница 19: ...sembly consists of inner door outer door and control panel 1 Disconnect the power supply to the dishwasher and then open the door 2 Remove 2 slides 3 Remove 4 screws 4 remove the base cover 5 open the main board case 6 Disconnect the wire terminal mark with ring 12 ...

Страница 20: ... of inner door outer door and control panel 7 Replace the door assembly rewiring the data wire to the main board recover all parts as the reverse steps WARNING The door assembly is made by professional equipment the components in the door assembly can not be replace separately 13 ...

Страница 21: ...sembly Steps of Disassemble The door switch is used to locking or unlocking door assembly 1 2 1 Disconnect the power supply to the dishwasher 2 Disconnect the 2 wiring harnesses from the door switch mark 1 3 Remove 2 screws mark 2 14 ...

Страница 22: ...cting box and take out the PCB 2 unplug the CON2 and ACN wires then use the multi meter Ω shelf to measure resistance between the brown wire IS and the broen wire ACL 3 When the door open The resistant is null When the door closed the resistence is infinity the door switch is ok 4 if resistance is always infinity replace the door switch see the section Part Name PCB 15 Remark How to reach the PCB ...

Страница 23: ...name Funtion Indicator Lamp Steps of Disassemble The lamp is lit when the door opened 1 2 1 Disconnect the power supply to the dishwasher 2 Disconnect the wiring harnesses mark 1 3 Unscrew the nut mark 2 16 ...

Страница 24: ...the right side of the tub Its purpose is to provide swind for the dishwasher increase the effect of drying 1 Disconnect the power supply to the dishwasher and remove light shell 2 Disconnect the wiring harnesses mark 1 3 Loosen 2 screws mark 2 4 Remove 2 snap rings mark 3 1 2 3 17 ...

Страница 25: ...ter Steps of Disassemble Filter can eliminate interference signal to make the machine work properly 1 Disconnect the power supply to the dishwasher and remove shells 2 Disconnect 6 wiring harnesses 3 Remove filter upward 18 ...

Страница 26: ...to protect the bottom of dishwasher and judge whether overflowing or not 1 Disconnect the power supply to the dishwasher and then remove water tank 2 Inverse the dishwasher and remove 1 screw 3 Remove base cover according the arrow direction 4 Disconnect 2 wire harnesses 19 ...

Страница 27: ... which receive and process signal from components send order to components and deal with the feedback information etc 1 Disconnect the power supply to t he dishwasher and then remove bottom cover 2 Remove the snap fit 3 Remove 2 snap fits and disconnect all wire terminals of board 4 Loosen 3 screws 20 ...

Страница 28: ...side Code Designation L ACL Live N ACN Neutrons GND Earth DIV Steam Temperature Detector EV1 Inlet Valve EV2 Softener Valve EV3 WaterDiverter Steam Generator IAQS Overflow Switch FM Flow Meter P2 DryHeating Protect Switch P1 WaterLevel Switch 135 115 ISS Salt Detector ML WashPump C Capacitor PS Drain Pump FAN Fan FUSE Fuse 3 15A R Heater Code Designation BU Blue YE Yellow GN Green WH White RD Red ...

Страница 29: ...onsists of electric coil valve body valve pole filter etc In a word the electromagnetic valve can act to allow water enter into machine when it receives the order given by controller Bottom view 1 Disconnect the power supply to the dishwasher and then remove bottom cover 2 Disconnect 2 wiring harnesses mark 1 3 Remove the snap ring mark 2 4 Remove valve by rocating it Technical Data Nominal voltag...

Страница 30: ...n or close It will cause the E1 or E4 error Check electric part 1 Open the protecting box and take out the PCB see the section Part Name PCB 2 With the door closed unplug the CON3 and ACN wires then use the multi meter Ω shelf to measure resistance between the blue wire PS and the blue wire ACN the normal resistance is about 4 4KΩ to 4 8KΩ 3 If the measured resistance is not correct it means the v...

Страница 31: ...C 220 240V Frequency 50Hz Resistance 235Ω 15Ω Delivery height 1M Delivery performance 17l min 230VAC The defeat point 1 The motor coil is broken so the drain pump can t work It will cause the E1 error 2 The magnetism of motor rotor is weak so drain pump cannot work It will cause the E1 error 3 The connector is loose so the drain pump can t work It will cause the E1 error 4 The rotor is locked by r...

Страница 32: ... wire EV1 and blue wire ACN the normal resistance is about 220Ω to 250Ω If the measured resistance is not correct it means the pump coil is broken or connector is loose In this case we should check the connection first If the problem hasn t been solved by re connection we should replace the drain pump If the resistance is OK but it also can t work maybe the magnetism is too weak so we need to repl...

Страница 33: ...s broken so the heater cannot work It will cause the E3 error 2 The Fuse is active so the heater cannot work It will cause the E3 error 3 The connector is loose so the heater cannot work It will cause the E3 error 1 Remove bottom board 2 With the door closed use the multi meter Ω shelf to measure resistance between the two terminals shown in above right picture the resistance is about 27Ω to 30Ω 3...

Страница 34: ... after pushing the snap joint mark 2 4 Washing Pump Assembly is removed 1 2 Nominal voltage AC 220 240V Frequency 50Hz Resistance 33 3Ω 1 The motor coil is broken so the wash pump can t work It will cause E3 error 2 The connector is loose the wash pump can t work It will cause E3 error 3 The rotor is locked by residues so the wash pump can t work It will cause the E3 error 4 The drain pump assembl...

Страница 35: ...out 35Ω to 45Ω 3 If any of the resistances is not correct it means the pump coil is broken or the connector is loose In this case we should check the connection first If the problem hasn t been solved by re connection we would replace the washing pump 4 If the resistance is OK but it cannot work it maybe the capacitor weakly we need to replace the capacitor ACN ML H ML L 1 If the electric part is ...

Страница 36: ...to sump which is used for measuring temperature of water in the tub 1 Disconnect the power supply to the dishwasher and then remove bottom cover 2 Disconnect the wiring harness mark 1 3 Loosen 2 screws mark 2 1 2 15 17 48KΩ 20 12 12KΩ 25 10KΩ 30 8 299KΩ 40 5 807KΩ 50 4 144KΩ 60 3 011KΩ 70 2 224KΩ 80 1 667KΩ 85 1 451KΩ NTC 31 ...

Страница 37: ...Part Name PCB 2 With the door closed unplug the RE connector shown in below picture then use the multi meter Ω shelf to test resistance between two blue wires RE and GND the normal resistance is shown in below table 3 I f the resistance is not correct it means NTC circuit has a problem In this case we should check the connection first If the problem hasn t been solved by re connection we would rep...

Страница 38: ...ut PCB see the section Part Name PCB 2 With the door closed unplug the CON2 wire shown in below picture then use the multi meter Diode shelf to test between black wire FM and blue wire GND to confirm whether electrical pulse is sent out while water is passing through flowmeter or not 3 If there is continual electrical pulse the multi meter will send out sound de continually 4 If there is no electr...

Страница 39: ...eter moving water can rotate magnetic impeller the tongue tube can sense the impeller s magnetic and send electronic pulses 1 Remove the shells including right left and top 2 Remove four screws used to fix the water tank Because flowmeter is integrated into water tank replace water tank if flowmeter has failure 3 Disconnect the wire and remove clamp fastening hose to water tank 4 Take out water ta...

Страница 40: ...Door assembly WARNING The door assembly is made by professional equipment the components marked with red square in the door assembly can not be replace separately 10 1 10 2 10 3 ...

Страница 41: ...36 39 1 39 2 48 49 33 46 50 51 47 ...

Страница 42: ...176000022707 Circuit Board Box 1 7 12176000022609 Back Shell 1 36 17476000007443 Drain Pump 1 8 12176000028171 Water tank 1 37 12176000022701 Cover 1 9 12176000022603 Right Shell 1 38 12176000022702 Cover 1 10 12176000022612 Tub Assembly 1 39 1 11001011000949 washing pump 1 10 1 12176000009535 Nut 1 39 2 12176000022704 Pump Case 1 10 2 17476000001119 Indicator Lamp 1 40 12176000022267 Transfer Tub...

Страница 43: ...an Steam Ganerator Heater Work Process Detail Chart Flow Meter Booster Pump Outlet Valve Inlet Valve long time no fullfilled signal EF error no signal E1 Error no Heat E3 error at the end none washing E3 error none working awful drying profermance none Drain high water level maybe leakage E4 error ...

Страница 44: ... 1 2 15 Wash 300S 1 5 16 Wash heat T70 120S 1 2 17 Wash 300S 1 5 18 Drain 8S 1 0 drain no drain 19 Static 3S 1 0 20 Drain 5S 1 0 21 Static 3S 1 0 22 Drain 10S 1 1 23 Discharge water 1 3L 1 0 water in tub E1 error 24 Wash heat T60 1 8 water heated E3 error 25 Wash 300S 1 5 26 Wash heat 120S 1 2 27 Wash 300S 1 5 28 Drain 8S 1 0 drain no drain 29 Static 3S 1 0 30 Drain 5S 1 0 31 Static 3S 1 0 32 Drai...

Страница 45: ...00S 1 5 fan active fan static 45 Drain 10S 1 0 46 Discharge water Pulse detecting 1 1 47 Regeneration 30S 0 0 48 Drain 30S 1 1 This step commands the execution time unit second This step command performs water entry unit litre This step executes the command to heat to the set temperature unit Or reach the set time unit second Phenom enon Dry NO Phase Step Param eter ...

Страница 46: ... 3 water heated E3 error 16 Drain 8S 1 0 Drain No drain 17 Static 3S 1 0 18 Drain 5S 1 0 19 Static 3S 1 0 20 Drain 10S 1 1 21 Discharge water 1 3L 1 0 water in tub E1 error 22 Wash heat T50 1 4 water heated E3 error 23 Wash heat 60S 1 1 24 Wash heat T60 1 3 25 Drain 8S 1 0 Drain No drain 26 Static 3S 1 0 27 Drain 5S 1 0 28 Static 3S 1 0 29 Drain 10S 1 1 30 Discharge water Pulse detecting 1 0 31 Re...

Страница 47: ... 1 0 water in tub E1 error 29 Wash heat T50 1 4 water heated E3 error 30 Wash heat T50 0 0 31 Wash heat 60S 1 1 32 Wash heat T72 1 3 33 Wash heat T72 0 0 34 Wash 120S 1 2 35 Drain 8S 1 0 36 Drain Pulse detecting 0 0 37 Regeneration 30S 0 0 38 Static 3S 1 0 39 Drain 3S 1 0 Rinse ...

Страница 48: ... 49 Static 60S 0 0 50 Fan 600S 0 0 51 Static 60S 1 1 52 Fan 600S 1 10 53 Static 60S 1 1 54 Fan 900S 1 15 55 Static 20S 1 0 56 Discharge water Pulse detecting 1 0 57 Drain 5S 1 0 58 Static 20S 1 0 59 Drain 20S 1 1 This step commands the execution time unit second This step command performs water entry unit litre This step executes the command to heat to the set temperature unit Or reach the set tim...

Страница 49: ...sh 3 1 1 0 50 Wash drain 10 1 1 1 51 Discharge water 1 5L 1 1 1 52 Wash 60 1 1 1 53 Wash drain 5 1 1 0 54 Wash 3 1 1 0 55 Wash drain 5 1 1 0 56 Wash 3 1 1 0 57 Discharge water 1L 1 1 1 58 Drain 15 1 1 0 59 Discharge water drain Pule detecting 1 1 0 60 Drain 30 1 1 1 This step commands the execution time unit second This step command performs water entry unit litre This step executes the command to...

Страница 50: ...20 Wash 180S 1 3 21 Drain 8S 1 0 22 Static 3S 1 0 23 Drain 5S 1 0 24 Static 3S 1 0 25 Drain 10S 1 0 26 Discharge water 1 3L 1 0 water in tub E1 error 27 Wash heat T50 1 3 water heated E3 error 28 Wash heat 60S 1 1 29 Wash heat T60 1 3 30 Wash 120S 1 2 31 Drain 8S 1 0 32 Static 3S 1 0 33 Drain 5S 1 0 34 Static 3S 1 0 35 Drain 10S 1 0 36 Static 10S 1 0 37 Fan 420S 1 7 Fan active Fan static 38 Drain ...

Страница 51: ... water in tub E1 error 21 Wash heat T68 900 1 15 water heated E3 error 22 Wash heat T70 180 1 3 water heated E3 error 23 Wash 120S 1 2 24 Wash heat T70 120 1 2 25 Wash 180S 1 3 26 Wash heat T70 120 1 2 27 Wash 180S 1 3 28 Wash heat T70 120 1 2 29 Wash 180S 1 3 30 Wash heat T72 180 0 3 31 Drain 3S 1 0 32 Drain 30S 1 0 33 Fan 2700S 1 45 Fan active Fan static 34 Fan 1200S 0 20 35 Drain Pulse detectin...

Страница 52: ...m data is for reference only Test conditions are as follows Attention Power consumption at shutdown state and standby state similarly are 0 49w Following table shows best cleaning procedures and amount of dishwashing powder required according to the dirty level of the dishes as well as the 46 FRUIT WASH Hot Dishwashing powder g NA 6 6 6 6 6 NA Highest Water Temperature NA 60 60 72 70 72 NA Time mi...

Страница 53: ...disconnected the EF is displayed and open regenerator valve 5s 3 05 Drain valve and water pump Pour water 1 5L into tub 4 04 Steam generator Open steam generator to heat the temperature to 105 and then turn off it 5 03 Temperature Motor pump and heating elements Turn on the wash pump after 10 seconds the heater will turn on The beeper will beep for one time when the temperature has rise for 3 for ...

Страница 54: ...asher will warning for E4 1 check the use of the detergent 2 check whether the appliance is level 3 check the micro switch 4 check the drain pump 5 check the amount of the filled water 6 find where leakage is E6 E7 only appeared in the factory mode E6 thermal sensor cut E7 thermal sensor short 1 check the inlet water temperature 2 check the thermistor 3 check the PCB E9 The buttons short Check but...

Страница 55: ...d check again OK Solve the problem Replace the floater to solve the problem Still wrong Check inlet valve circuit is corrector not Reconnect the wire of Inlet valve circuit and check again Solve the problem OK Not Still wrong Replace the inlet valve to solve the problem Make a check of the Hydraulic Pressure 0 04 1 0MPa is ok give advice to consumer Lower trouble shooting flow logic chart 49 ...

Страница 56: ...ect or not failure Reconnect the water suction pump Circuit and check again Not Solve the problem OK Still wrong water Check offlowmeter Circuit is correct or not Not Reconnectflowmeter Circuit and check again OK Solve the problem Replaceflowmeter Solve the problem Still wrong Replace water suction pump solve the problem trouble shooting flow logic chart 50 ...

Страница 57: ... and check again OK Still wrong Replace the Inlet Valve to solve problem Check whether the Washing Pump circuit is correct or not mentioned in section 4 Reconnect the wire of Washing Pump circuit and check again Not solve the problem OK Replace the Washing Pump to solve problem Still wrong OK Reconnect the wire of NTC circuit and check again solve the problem OK Replace the NTC to solve problem St...

Страница 58: ... Do as follows Remove two side panels Remove the water from the bottom board and make sure there is no water at the bottom board Restart the dishwasher with a strong or standard wash program as a leakage could easily repeat at a higher temperature and after a long period of running time Observe the bottom tray every twenty minutes If any water appears you will found out which areas such as motor d...

Страница 59: ...hether the NTC circuit is correct or not mentioned in section 4 Reconnect the wire of Flowmeter circuit and check again Not solve the problem OK Replace the NTC to solve problem Still wrong If the problem has not been solved through all the inspection mentioned above maybe the PCB has a malfunction So replace PCB and test again Caution Because the real situation is unpredictable inspection trees m...

Страница 60: ...And Wiring Diagrams WARNING Disconnect electrical power before servicing Caution Label all wires prior to disconnection Wiring errors can cause improper and dangerous operation Verify operation after servicing 54 ...

Страница 61: ... Meter P2 DryHeating Protect Switch P1 WaterLevel Switch 135 115 ISS Salt Detector ML WashPump C Capacitor PS Inlet Valve FAN Fan FUSE Fuse 3 15A Code Designation BU Blue YE Yellow GN Green WH White RD Red BK Black PK Pink GY Gray OR Orange BR Brown PU Purple YE GN Yellow Green bicolor 55 R Heater DOOR Door Switch IS Door Switch RE Temperature sensor NTC NS Nephelometer Main board Schematics And W...

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