service manual (9241B 9242B)
Contents
1. ojnoa 1972M UTEIG qnoz 1972M T AQ u q os wae eads Z MOT AT A 2 TuT sou 3 TuT equi wae eagds azeddn Keads doq 4 Tul NII 19 eA az yeodq ITE MH Water Circuit gt Function Description Process of water inlet indicated by magenta route In this process regeneration water route is cut off main water route is open The water in the main water route is softened when pass through the softener and then enter in the tub During this phase some of inlet water will be stored in the air breaker to be regenerating water Process of cycle washing indicated by blue route Cycle washing action is driven by washing pump motor Water can obtain the power during it passing through the working washing pump then be pumped into spray arm pass from spray arm nozzles over the dishes into sump where connect to washing pump and to get in the next water cycle Process of regeneration indicated by green route Regeneration valve is open the regenerating water dissolve salt in the salt chamber of softener and then enter in the resin tank to reactivate the resin Location gt Theory of parts Air breaker n Heater2. esuu jeu y Buunp seusip Jno uo jou s np s eorueuo pue POO yey eunsue o pejejnuoJ si pie sul Jesuedsip eoe doiJ eu Ul SP L Ajj euuou 51 JO pre esuu pre esuu pue AjduJe jou si Jeurejuoo pie esuu y ejns exyeui Jesuedsip pie esu xoeuo eoueuuojLed Bui p 100d eoueuuojLed SAID uomonJsul o Jood esneo 1uBlui 1edoJduul Buisn y y u eoueuuojed Hulp dn apis woyog ssejB y peol AI Sum b jo uonipuoo Aess o u y 51 Jenuew pue s us p eu 111 ens seusip v uo Buipeo yoeuo uonon nsul ui pauonuaw peo o MOY uo eorApe y sureuieJ esneo zyj Bulpeol 1edouduur
3. When E1 occurs the drain pump will run until flowmeter keep motionless for 2 minutes and all the other components will be stopped immediately At the same time the buzzer will alarm for 30 seconds and error 1 will be shown For the models controlling water filling by pressure switch If the inlet valve has been opened for 4 minutes but the pressure switch hasn t act E1 would occur When E1 occurs the appliance will active drain pump and stop all the other components immediately At the same time the buzzer will alarm for 30 seconds and error 1 will be shown Then drain pump will run till the pressure switch reset and continue draining for 60 seconds E3 Heating exceed pre set time If the heating element has been working for 60 minutes but the water temperature detected by NTC hasn t reached desired value E3 would occur When E3 occurs the drain pump will run until flowmeter keep motionless for 2 minutes if the model with the pressure switch 83 63 drain pump would run till the pressure switch reset and continue draining for 60 seconds and all the other components will be stopped immediately At the same time the buzzer will alarm for 30 seconds and the error 3 will be shown EA Overflow At any time if overflow micro switch act and keep for longer than 2 seconds the E4 would occur When E4 occurs the drain pump will run until flowmeter keep motionless for 2 minutes if the model with the pressure switch 83 63 drain pump
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7. for reference only 36 Troubleshooting 37 U91IMS eunsseJd eAnoejep i 69 68 uollws YOUMS eJnsseiJd Jo 111012 Sy Y29949 SI UOSE9I jq ssod y wieje 22 HO eis euin eJnssaJd y yo u 1115 eoueijdde pue qn eu ui OU S 3194 JI uieJp 1 Buo duund ureJp eui dina duund 28 nd ul In2Jl nd ul Al eoej deJ 10 32euuo99J eui y u sou uleJp y 4oeuo U9IIAS eJnssaJd eui eoe dei1 Jo Jo uuo5 1 sou eui yoolqun sou eui yoolqun sou p yoolq god god uim Buoim Bulu uuos si 3194 ooe daiJ JO 129uu099J eg eui sesneo jq ssod 1eujo pejeuruuo eAeu noA ueuM OZL OvL 8 you und sAemje dund uresp 0Z1 071 ejnsseJd y eoejdeJ io uni 51 duind urejp eui YO9UD punos y u lsi y esneo juBiuJ uojiMs inss id eAnosjep eunsseJd v 4oeuo no uoudis osneo yiu esou urejp uonej ejsur ULETE L3 U USMS eJnssaud Jo noo v y u l esneo juBiu yms eJnsseJd YAMS eJnsseJd Aq Buil sjepouu 10 Jo 9uJMOJ L3 esneo yru J J UMO 1 uuAO J JO PNI v oun eoe daJ Jo 12euuo29J JOJOWMO J 9AI j29Jep 49 9UJMO J UM S POUL JO y y2 y OU L3 esneo yru per ebtci ul JO INDIO v L3 eoe daJ Jo 12euuoo9J BAILA JOU AlJ93J p JO uonoeuuoo
8. inlet time s there any ater in the Tub Little water v Make a check of the Hydraulic pressure 0 04 1 0MPa is ok OK Make a check of Drain Hose No water Make a check of inlet hose of AQUASTOP only for the dishwasher with AQUASTOP device Failure Make a check of Tap Replace it to solve Not open Open it to solve the E1 tree gt Inspection the problem problem Inlet Hose is blocked or kinked Opened Failure Make a check of Inlet Hose OK Check whether the Inlet Not Valve circuit is correct or Reconnect the wire of Inlet Valve circuit and check again Failure Still wrong solve the problem solve the problem Replace the Inlet Valve to solve Reconnect the wire of Pressure Switch circuit and check again Still wrong problem OK solve the problem Replace the Pressure switch to not mentioned in section 4 Correct Model with Flowmwter Model with Pressure Switch 83 63 v Check whether the Not Pressure Switch 83 63 P SIS9 circuit is correct or not Check whether the Not Lower Wrong Flowmeter circuit is correct or not mentioned in section 4 Reconnect the wire of Flowmeter circuit and check again
9. l Ji J2 ACL HEAT Simi N p4 CON6 P1 P3 N A j 7 J3 E4 012 R40 R20 CON27 b x e e Po cu o IC2 ig M b cons 6154 ics q zm IAQS RY4 RY3 RY2 RY RY RYS ISB RY5 CON24 BUZ1 ni 771 TE 155 i eel B G x DZED 02 EUL 1 L PS ML Note This mapis applies to 9378A model Description There is small pole s location difference HEAL Output Br nealing 7 1O11 the same meaning described on the left side So Rinse detect Overflovv detect Flovvmeter Pressure Switch 83 63 CON22 CON21 Inlet Valve gt Theory of parts Location of inlet valve Appearance connect to inlet water hose to air breaker electric coil inside terminals The work principle The inlet valve is electromagnetic valve that decide whether water enter or not Valves are normally closed Each time the appliance requires water the controller will convey an electric signal to the coils to open the valves The inlet valve consist 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 receive the order given by controller The defeat point 1 The valve coil is broken so the valve can t open It will cause the E1 error 2 The filter is jammed so water can t enter It will ca
10. Give advice to consumer Hang correctly to solve the problem Still wrong Solve problem OK solve the problem Replace the Flowmeter to solve problem 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 325 E3 Longer heating time E3 tree gt Inspection solve the problem Replace the Inlet Valve to solve problem OK solve the problem Replace the Check water Low a check of over heat Failure Replace Switch to temperature in the tub proof heating Micro switch solve the problem High Jammed Check whether the filter is Clear or replace filter jammed severely or not to solve the problem Failure Reconnect the wire of Ga 0 I Heater circuit and check again Still wrong OK v Won iiie is Not Reconnect the wire of correct or not mentioned gt Washing Pump circuit in section 4 and check again Still wrong v Check vvhether the La Not Reconnect the wire of OK NTC circuit NTC circuit and check solve the problem or not mentioned in section 4 again Still wrong Replace the NTC to solve problem Washing Pump to solve problem 34 E4 tree gt
11. Inspection E4 Overflow No water Make a check of Failure Reconnect the wire of there any water on Flooding Switch Flooding Switch circuit solve the problem the bottom board I circuit normally closed and check again Still wrong Blocked Check vvhether Flooding Switch is blocked or not Repair or Replace it to solve problem Make sure consumer use Improper the proper detergent and Give advice rinse OK Make a check of Failure Drain Hose is kinked Failure Correct Solve the problem Drain Hose or blocked Model with Pressure Switch 83 63 Model with Flowmeter v Check whether the Flowmeter circuit is correct m Coane 7 solve the problem or not mentioned in 7 4 check again Still wrong Replace the Flowmeter to solve problem Check whether the Not Reconnect the wire of OK Pressure Switch 83 63 Pressure Switch circuit solve the problem circuit is correct or not and check again Correct Still wrong Replace the Pressure Switch to Solve problem Maybe there is a real leakage 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 pro
12. SES L gt J Filter system Sump p YT Pressure switch 140 120 Pressure switch 83 63 only for models whose water filling be controlled by pressure switch Capacity Softener Overflow switch Please Note Exploded view and part list of each model have some different visions so please refer to newest vision Midea sent you PCB gt Theory of parts PCB Printed Circuit Board is the control center of dishwasher which receive and process signal from components send order to components and deal with the feedback information etc Access PCB Removing the control panel The control panel can be removed from dishwasher door 1 Remove the six screws securing the control panel to the door 2 The control panel will drop down and be free of the door But the wiring will still connected to the control panel Note For the majority of models the PCB is located behind the control panel The minority of models locate the PCB on the side of strengthening muscle You can judge the location by the newest exploded view Midea sent you 3 Disconnect the connector form PCB 4 Remove the screws securing the PCB to control panel 5 Remove the PCB 6 Reverse the above procedure to install PCB gt Theory of parts Map of PCB Oo ACN N ig M p2 CONI4 CON FUSE 3 158 201 E3 CON26 Ci u9p12 93288 0 1 1 5 2009 5 5 Ut 7 L
13. Technical Service Manual 2 Dishwasher Contents Specification 2 Function Description 3 4 Water circuit 3 4 Theory of parts 5 23 Location 5 PCB 6 7 Inlet valve 8 10 Drain pump 11 12 Heater 13 14 Washing pump 15 16 Pressure switch 17 NTC 18 19 Flowmeter 20 21 Safety Hose 22 23 Test program 24 28 Procedure 25 Error code 26 28 Inspection 29 32 Troubleshooting 33 37 SAFETY NOTICE This documentation is only intended for qualified technicians who are aware of the respective safety regulations Specifications Models 9241B 9242B 2 1 Wi Ni L Electrical supply 220 240V 50Hz Supply vvater pressure 0 04MPa 1 0MPa Supply water temperature below 60 C For the basic operation instructions please refer to the instruction manual attached with each unit Water Circuit gt Function Description UO3TMS znss rd qund urez T o C dund Sutysem f iw l
14. e E3 error 3 The connector is loose so the heater cannot work It will cause the E3 error 13 Heater gt Theory of parts Bottom View Clamps Ground terminal Terminals measure heater resistance Access heater 1 Drain off the water in the dishwasher and disconnect the power supply Note Make sure to remove remained water in the dishwasher If not wet the floor 2 Remove bottom board 3 Label and disconnect the terminals to and ground wire 4 Remove the 2 clamps from the Heating element Caution The clamp is easily damaged during removal and can t be reused Replace the old clamp with a new universal clamp 5 Reverse the above procedure to install Inspect heater 1 Remove bottom board 2 Use the multi meter shelf to measure resistance terminals between the two terminals shown in right picture the resistance is about 290 to 310 3 If the measured resistance is not correct it means the heater coil or the thermostat is broken we should replace the heating element or the thermostat 14 Washing Pump gt Theory of parts Location of Washing Pump The work principle Bottom View BLUE BLUE 1 BLA 150 M main coil A assistant coil RED 2 Washing pump is a kind of asynchronism motor with capacitor The stator consist of silicon steel stack and two coils main coi
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16. 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 vve vvould replace the NTC NTC resistance table 19 Flowmeter gt Theory of parts Location of Flowmeter Top Panel Side panel Baseboard Left Baseboard Attention Build in models have no Baseboard and left and right baseboard but adjustable baseboard The work principle Flowmeter is integrated into Air Breaker Function of Flowmwter is measure how much water has entered in appliance it consists of impeller tongue tube and terminal etc When water pass through the flowmeter moving water can rotate magnetic impeller the tongue tube can sense the impeller s magnetic and send electronic pulses Flowmeter 20 Flowmeter gt Theory of parts Access Flowmeter 1 Remove the baseboard life baseboard top panel and life side panel 2 Remove the plastic nut inside tub which secures the air breaker to tub Because flowmeter is integrated into air breaker replace air breaker if flowmeter has failure 3 Disconnect the wire and remove clamp fastening hose to air breaker 4 Take out air breaker 5 Reverse the above procedure to install Inspect Flowmeter 1 Open the control panel and take out PCB 2 Unplug the CON27 wire shown in below picture then use the multi meter Di
17. first If the problem hasn t been solved by re connection we should replace the drain pump 4 f the resistance is OK but it also can t work maybe the magnetism is too weak so we need to replace the drain pump Check the machine part 1 If the electric part is OK we need to check the machine part 2 Remove bottom board 1 Drain off the water in the dishwasher and sa ss TP disconnect the power supply Note Make sure to remove remained water in the dishwasher If not wetthe floor 2 Remove four screws on bottom and then remove bottom board 3 Label and disconnect the two terminal lugs from 4 Remove screws securing the drain pump to sump then remove drain pump 5 Reverse the above procedure to install 3 If the non return valve is wrongly assembled the tub will remain much water We need to re assemble the non return valve 4 f the drain pump is working but no water drain out or just a little We should check the drain hose or drain body 12 Heater gt Theory of parts Location of Heater The work principle Bottom View heater thermostatl thermostat T ill t pressure svvitch Technical data Nominal voltage 230VAC Rating power 1800W Resistance _ 29 2651 4630 Thermastat Thermastat2 229 C The defeat point 1 The heater coil is broken so the heater cannot work It will cause the E3 error 2 The thermostat is active so the heater cannot work It will cause th
18. gram 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 drain pump sump softener and hoses between them and also clips at the end of each hose besides the weld seam at the bottom of the tub If hours passed but no water comes out you should stop the dishwasher with sufficient water in the inner tub and observe it again after leaving it alone for one to two hours 35 E6 Open circuit failure of thermistor E6 amp E7 tree gt Inspection OK solve the problem Replace the NTC to Check whether the NTC Not Reconnect the wire of circuit is correct or not Flowmeter circuit and mentioned in section 4 check again Still wrong E7 Short circuit failure of thermistor Check whether the NTC Not Reconnect the wire of circuit is correct or not Flowmeter circuit and mentioned in section 4 check again Still wrong Solve problem OK solve the problem Replace the NTC to Solve problem 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 mentioned in this manual are
19. ia 31 0mm 6 Remove the clamp fastening interconnect hose to the lower nozzle 7 Remove the clamp fastening interconnect hose to heater 8 Remove the screw and disconnect the ground wire from the wash pump motor assembly Note Do not attempt to remove the bolt and locknut connecting the motor mount to the dishwasher frame 9 Remove the motor pump assembly from the dishwasher 10 Reverse the above procedure to install Inspect Washing Pump Check the electric part 1 Open the control panel and take out PCB 2 Unplug the CON4 and P4 wires then use the multi meter O shelf to test resistance between two white wire ML and IS the normal resistance is about 78Q to 100 O 3 I f the resistance 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 f the resistance is OK but it cannot work it maybe the capacitor weakly we need to replace the capacitor Check the machine part 1 If the electric part is OK we need to check the machine part 2 Remove bottom board 3 Check the pump assembly if the bracket is loose it will bring the noise we need to tighten it 4 If the wash pump cannot start and the machine hasn t been used too long maybe the seal element is bond 5 If the drain pump is working but no water out or just a little We should check the vane
20. l and assistant coil The defeat point 1 The motor coil is broken so the wash pump can t work It will cause E3 error 2 The motor rotor capacitor is weaken so washing pump can t start In this case it will send out the electromagnetism noise If itis continue electrifying motor the thermal protector will work It will cause E3 error 3 The connector is loose the wash pump can t work It will cause E3 error 4 The rotor is locked by residues so the wash pump can t work It will cause the E3 error 5 The drain pump assembly bracket is loose it will cause noise 6 If the machine hasn t been used for long time there is a possibility the wash pump can t starting Technical data YXVV65 2B YXVV50 2 250l min 230VAC 250l min 230VAC performance lt 1 50A 1 010 230VAC current Operating 0 65A 10 0 47x1096 230VAC current 15 Washing Pump gt Theory of parts Access Washing Pump 1 Disconnect power 2 Remove bottom board 3 Label and disconnect the 2 terminals to the capacitor 4 Label and disconnect the 2 terminals to the motor wire connector 5 Remove the clamp fastening the interconnect hose to the sump Caution The clamp is easily damaged during removal and can t be reused Replace the old clamp with a new universal clamp D
21. neration Open regenaeration valve and drain for 30s Valve Buzz one sound stop and stand by e N 25 Error Code gt Test program How to know which error code has occurred To know which error code has occurred refer to the previous table named Test Program Operation Take 9348 for example If the error 1 has happened the buzzer would alarm for 30 seconds and E1 would be shown on display Other error alarms would be shown in the same manner Take 9239D for example if the error 7 has happened the buzzer would alarm for 30 seconds and the Main Rinse and Drying indicators would flash simultaneously Other error alarms can be deduced from this The corresponding relation between indicator combination and error code shown in above figure Notice the majority of models are follow this regulation but some special models is different Attention Priority level of E4 is the highest E4 operation is valid after other error operations have done When E4 operation has done all the others are invalid In test program E1 E3 E4 E6 and E7 are valid Note Error Code gt Test program How does the appliance react when error code occurred E1 Water filling exceed pre set time For the models controlling water filling by flow meter If the inlet valve has been opened for 4 minutes but the water quantity hasn t reached the desired value measure by pluses E1 would occur
22. ode shelf to test whether electrical pulse is sent out from two black wires 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 electrical pulse the multi meter will not send sound In this case it means something wrong with flowmeter circuit We should check the connection first If the problem hasn t been solved by re connection we should replace the air breaker 21 Safety hose gt Theory of parts Location of Safety Hose Electronic Aquastop Hose Note The assembly mode of mechanical Aquastop hose is the same as that of universal The work principle Mechanical Aquastop Hose Electronic Aquastop Hose Connecting to air breaker There are two types of Safety Hose mechanical Aquastop hose and electronic Aquastop hose which have different principles and assembly modes Mechanical Aquastop safety hose has two layers If water leak and fill the air space between two layers the foaming material will expand and lock the hose In this situation the machine might set off E1 alarm Electronic Aquastop safety hose also has two layers But the difference from mechanical is that if the water leak and flow on the bottom tray the flooding pressure switch on the tray will act the electromagnetic valve on the hose will cut off the water road and the machine will set off E4 alarm 22 Safe
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25. r the rotor will be very easy to start The defeat point 1 The motor coil is broken so the drain pump can t work It will cause the E2 E4 or E1 error 2 The magnetism of motor rotor is weak so drain pump cannot work It will cause the E2 E4 or E1 error 3 The connector is loose so the drain pump can t work t will cause the E2 E4 or E1 error 4 The rotor is locked by residues so the drain can t work It will cause the E2 E4 or E1 error 5 The drain pump assembly rack is loose it will cause noise 6 The non return valve is bad the remain water is too much Explanatory notes failure of drain pump may cause E1 becaus Technical data Nominal voltage 220 240VAC 150 2200 Delivery height Delivery performance x 17l min 230VAC Il Drain Pump gt Theory of parts Access drain pump the drain pump Inspect drain pump Check the electric part 1 Open the control panel and take out the PCB 2 Unplug the CON4 and P4 wires then use the multi meter O shelf to measure the red wire PS and white wire IS the normal resistance is about 1500 to 2200 3 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
26. the 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 valve 4 If the resistance is OK we need to inspect the valve body Inlet Valve gt Theory of parts Check machine part 1 If the electric part is OK we need to check the machine part 2 Remove the baseboard left baseboard top panel left side panel and middle rear crosspiece 3 Check the valve filter if the valve filter is blocked we need clear the residues 4 Ifthe valve filter is clear and the valve can t inlet water check whether valve can act or not If itisn t we need replace the valve 5 If the water is continue entering we need replace the valve 10 Drain Pump gt Theory of parts Location of Drain Pump The work principle Bottom View Drain pump integrated into sump to washing pump The work principle Drain pump consists of electrical motor impeller inlet and outlet Drain pump is a kind of pump driven by permanent magnet synchronous motor The rotor is made with permanent magnet material the running inertia of rotor is very small the stator consist of silicon steel stack and coil When the drain pump is on powe
27. to start Test Program Jump into next Rightmost Program step To activate test program with the door closed and machine off hold down the Rightmost Program button and press the POWER button until the machine enter into Test Program The appliance will pause and stand by as step 00 Then press Rightmost Program button to start the Test Program During test program running you can press Rightmost Program button to jump into next step except inlet valve step Note The way to activate test program is slightly different between different models 26 Procedure gt Test Program Procedure of Test Program for models controlling water filling by flowmeter Display on ONU Process Description the screen Duz Initialization 1Povver on stand by Open inlet valve and feeds with 3 6L water 45cm models feeds with Inlet Valve 3 0L Washing P 2 i 5 m Dispenser will act once and washing pump will run for 60s in this step and Dispenser Run washing pump and heating element until the water temperature Heating Element reaches 57 C Then the machine will pause Press Rightmost Program button to jump into the next step 08 temper ature value Inlet Valve and Open inlet valve and feeds with 3 6L water 45cm models feeds with 3 0L If model is equipped with fan the fan would work in this step E Washing Pump Run washing pump for 2 mins Washing pump Run washing pump for 1 mins Drain Pump and Rege
28. ty hose gt Theory of parts Access Safety Hose ire connecter no need to distinguish ositive and negative electrode 1 Remove baseboard side baseboard top panel and left side panel 2 Remove clamp cut the bound belt and disconnect the wire connector Then the Inlet hose cane pulled out 3 Reverse the above procedure to assemble Mechanical Aquastop Hose Mechanical Aquastop hose is connected to appliance just as universal water inlet hose Inspect Safety Hose Electronic Aquastop Hose 1 Open the control panel and take out the PCB 2 Unplug the CON3 and P4 wires then use the multi meter O shelf to measure resistance between the blue wire EV1 and white wire IS Open circuit and short circuit are both incorrect 3 1 f the measured resistance is not correct it means the valve 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 should replace the safety hose Mechanical Aquastop Hose Maybe moisture absorption of foaming material in mechanical device cause a self lock fault can t fill the water and this lock is non resettable 23 Test Program Test Program In order to check the operation of components of appliance and find out the malfunction we designed this program for technician How to activate Test Program Test Program Operation omaa With door closed Rightmost Program Power How
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30. use the E1 error 3 The connector is loose so the valve can t open It will cause the E1 error 4 The valve pole is rusted or locked by dreg so the valve can t open or close It will cause the E1 or E4 error Technical data Nominal voltage 220 240VAC 50 60Hz Resistance Approx 3 4 4 3kQ 100 ED T25 mone 3min 5min T60 4L min 15 Power 0 04 1MPa Inlet Valve gt Theory of parts Access inlet valve 1 Disconnect power 2 Remove the water inlet hose Note Be careful of remain water drop 3 Remove the baseboard left baseboard top panel left side panel and middle rear crosspiece 4 Disconnect the 2 terminal lugs from the inlet valve 5 Push the valve from the lower 3 Top panel rear crosspiece to take it off 6 Remove the clamp and disconnect the inlet hose to air breaker from the water valve 7 Reverse the above procedure to install 4 Left side panel 1 Baseboard DA 7 Ne 2 Left baseboard Inlet valve Attention Build in models have no Baseboard and left and right baseboard but adjustable baseboard Inspect inlet valve Check electric part 1 Open the control panel and take out the PCB 2 Unplug the CON3 and P4 wires then use the multi meter Q shelf to measure resistance between the blue wire EV1 and white wire IS the normal resistance is about 3 4KQ to 4 3KQ 3 If the measured resistance is not correct it means the valve coil is broken or
31. wheel 16 Pressure Switch gt Theory of parts The work principle The pressure switch consists of amoving diaphragm and disc which activate a change over contact The contact can be calibrated to trip and reset at the desired pressure levels The main application is to control the level of water in appliances May also provide flood protection In our production the pressure switch is to control the water level in appliance like 83 63 serial May also provide flood protection like 140 120 serial Manufacturer Elbi 1 COM 2 NC 3 NO Front view Back view 17 NTC gt Theory of parts Location of NTC The work principle Bottom View NTC The work principle Negative Temperature Coefficient Thermistor is integrated into sump which is used for measuring temperature of water in the tub Access Washing Pump 1 Remove bottom board 2 Remove two screws securing the NTC to sump shown in above picture 3 Take out NTC 4 Reverse the above procedure to install 18 NTC gt Theory of parts Inspect NTC 1 Open the control panel and take out PCB 2 Unplug the RE connector shown in below picture then use the multi meter O shelf to test resistance betvveen tvvo blue vvire the normal resistance is shovvn in belovv table 3 I
32. would run till the pressure switch reset and continue draining for 60 seconds and all the other components will be stopped immediately At the same time the buzzer will alarm for 30 seconds and error 4 will be shown Note Priority level of E4 is the highest E4 operation is valid after other error operations have done When E4 operation has done all the others are invalid 30 Error Code gt Test program E6 Open circuit failure of thermistor In test program once open circuit failure of thermistor is detected by controller the E6 would occur When E6 occurs the drain pump will run until flowmeter keep motionless for 2 minutes if the model with the pressure switch 83 63 drain pump would run till the pressure switch reset and continue draining for 60 seconds and all the other components will be stopped immediately At the same time the buzzer will alarm for 30 seconds and error 6 will be shown E7 Short circuit failure of thermistor In test program once short circuit failure of thermistor is detected by controller the E7 would occur When E7 occurs the drain pump will run until flowmeter keep motionless for 2 minutes if the model with the pressure switch 83 63 drain pump would run till the pressure switch reset and continue draining for 60 seconds and all the other components will be stopped immediately At the same time the buzzer will alarm for 30 seconds and error 7 will be shown 31 E1 code Longer
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