service manual (template E4)D
Contents
1. Jo eJds JoMOT uie gio euds 1 ddn 1 wie 49 401 S JE 193691q ME k SOU 1 TU1 0 JINDIIO VVater Circuit xFunction Description Process of vvater inlet indicated by magenta route n this process regeneration vvater route is cut off main vvater route is open The vvater in the main vvater 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 getin the next water cycle Location Theory of parts air breaker Mi 1 1 EXT CELL IE 1 ra Elmi n p BEEE CENI Please Note Explode view and part list of each model have some different visions So please refer to the newest vision2. jou aie s npis l 6011 pue POO jeu eunsue o peje nuJJoJ s pre sulM eoueuuojied 1000 esneo 1uBiuu ueJ60Jd 1edoJuduur dn epis ujojoq ssej6 y peo pue seusip y 111 ens aye seusip eu uo esneo yiu Buipeo jedouduur duund y yoyo duund Hulysem y xoeuo Buipeo y 4oeuo WeJOU SI esioU y xoeuo Jesuedsip pie esu uJeJBoJud bulsn y y u DBuipeo yosyo 38 oupuloH d Bui p 100d
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5. Diverter valve fault D li NOt Reconnect ne wre of correct or not mentioned 5 iy Diverter Valveand check again in section 4 Still wrong Caution Because the real situation is unpredictable inspection trees mentioned in this manual are for reference only 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 33 Troubleshooting god ooe daiJ JO 129uu099J Oc L Ov L eJnssaeJd y eoe doJ SOU uteJp JejsuleJ uon s eJnsseJd eui ooe daJ Jo 132euuo29J JojoulMOJ ooe daiJ JO 129uu099J y ooe daJ Jo 132euuo29J yuryun Jo yoolqun AIB eolape SOU U eoe deJ Jo Jo uuo5 1 esou u eoejdeJ god BuoiA Bulyyewos si q ew sesneo lq ssod 1eujo pejeurume eAeu noA U UAA you 10 uni si duind uleip v YO9Y oj punos y u si Jenueuu uon on nsul o s l AH dold pe eiur s 11 Guns exeuu U91IMS eJnsseJd Jo yno v xoeuo JO OWMO JO INDIO eu 19 UI JO N3119 4oeuo yuryun Jo yoolqun 071 O 700 wouy eBueiJ y ui eunssaJd olinei54u v 5 oyewW you Jo uedo de eui JOU JO XO SI y JOUJOYM esou dOLS VNOV 9Iu04 99J9 J
6. but no water out or just a little We should check the vane wheel 16 Pressure Switch gt Theory of parts The work principle The pressure switch consists of a moving 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 May also provide flood protection like 135 115 serial Front view Back view 17 NTC gt Theory of parts Location of NTC EN Mimi 2 a Me ES or EX The work principle Negative Temperature Coefficient Thermistor is integrated into sump which is used for measuring temperature of water in the tub Access NTC 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 protecting box and take out PCB 2 With the door closed unplug the RE connector shown in below picture then use the multi meter shelf to test resistance between two blue wires RE and GND the normal resistance is shown in below table 3 If the resistance is not correct it means NTC circuit has a problem n this case we should check the connection first If the problem hasn t been solved by re connection we
7. Nominal voltage 220 240VAC 50 60Hz Resistance Approx 3 4 44kQ 10096ED T25 22 3min 5min T60 2 5L min 1596 5V 1 Power SW 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 cover of the bottom board Lockinq terminals a AJI L LU 926 2 4 Disconnect the 2 terminal lugs from the inlet valve 5 Pull out the valve a little then contrarotate it to take it Off 6 Remove the clamp and disconnect the inlet hose to air breaker from the vvater valve 7 Reverse above procedures to install Inspect inlet valve Check electric part 1 Open the protecting box and take out the PCB 2 With the door closed unplug the CON3 and ACN wires then use the multi meter Q shelf to measure resistance between the blue wire EV1 and the blue wire ACN the normal resistance is about 3 4KO to 4 4KQ 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 valve 4 f the resistance is OK we need to inspect the valve body Check machine part 1 If the electric part is OK we need to check the machine part 2 Check the valve filter if the valve filter is blocked we need clear the residues 3 If the va
8. ature value and Heating machine will pause Element Press Program button to jump into the next step Lower speed Washing Pump and Dispenser 2s later run lovver speed washing pump for 8s dispenser will act for 45s in this step Regeneration Valve Drain for 30s Buzz one sound stop and stand by Open regeneration valve for 30s 26 Error Code Test program Hovv to knovv vvhich error code has occurred To know which error code has occurred refer to the previous table named Test Program Operation Take 7201 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 7303 for example if the error 7 has happened the buzzer would alarm for 30 seconds and the Glass 1 hour and Rapid indicators would flash simultaneously Other error alarms can be deduced from this binary decimal Glass 1 hourl Rapid numeral numeral Zk NN o gue gu Ie aa NEM EX Sarat Ss The corresponding relation between indicator combination and error code shown in above figure Notice the majority of models are follow this regulation 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 E7 and ES are valid Note E8 is valid for models equipped with diverte
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10. 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 the error code will be shown 29 E1 code Longer inlet time s there any ater in the Tub Little vvater v Make a check of the Hydraulic pressure 0 04 1 0MPa is ok No vvater OK Make a check of Drain Hose Make a check of inlet hose of AQUASTOP only for the dishvvasher vvith AQUASTOP device Failure Not open Make a check of Tap E1 tree gt Inspection Replace it to solve the problem Open it to solve the 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 not mentioned in section 4 Correct Model with Flowmwter Stil wrong Model with Pressure Switch 83 63 v Check vvhether the Not Reconnect the vvire of Pressure Svvitch 83 63 F Pressure Switch circuit circuit is correct or not and check again Still wrong PS Miner Not ar n or not mentioned in m Flowmeter circuit and check again section 4 Still wrong Lower Give advice to consumer Wrong Hang correctly to solve the problem Reconnect the wire of Inlet Valve circuit an
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12. 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 protecting box The PCB can be removed from the protecting box in the bottom of machine 1 Disconnect power supply 2 Take out cutlery basket basket and filter system 3 Open the cover of bottom board 4 Remove the screws for fixing protecting box and open the protecting box cap A ied o 41 Bottom view 5 Disconnect the connector form PCB 6 Remove the screws securing the PCB to control panel 7 Remove the PCB 8 Reverse the above procedure to install PCB gt Theory of parts View of PCB ALME on ACN ACL um EU2 BS HERT P l T Tes ku 4 un 15 L AC250U Nj Y4 c RY RY3 RY2 RY6 RY WOP12 7201 0 1 1 U1 3 Ol ow 2010 08 27 1 5 1 2 b g E4 TT sO Q 02 010 Dil 012 013 L Ta 0000 eb De C4 We mama dre El Li IAE Ius Bg c EN4 Note This map is applies to 7201 model F R HEAT On Fas INNEN t Il F sul LS L Lx LL 158 L RC2SDU ae TW lo 124 16 J2 Ja d HAPL2 7207A D 1 1 01 0 Q 2010 12 11 JO J 3 Note This mapis applies to 7207A model PCB gt Theory of par
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14. Technical Service Manual v D 7 Q Contents Specification Function Description Water circuit Theory of parts Location PCB Inlet valve Drain pump Heater Washing pump Pressure switch NTC Flowmeter Safety Hose Diverter valve Test program Procedure Error code Inspection Troubleshooting SAFETY NOTICE This documentation is only intended for qualified technicians who are aware of the respective safety regulations 3 4 3 4 5 23 6 7 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 29 26 27 29 30 33 34 38 Specifications Models WQP12 J7225 Electrical supply 220 240V 50Hz Supply water 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 dund il B aL dund suryse l AJLA 19 TUT Dni olin n c l 13 asoy UTRIP anoz To o qnoz z qeM ufea 2 Tul Ck i
15. VVashing Pump 1 Disconnect povver 2 Remove bottom board 3 Label and disconnect the 2 terminals to the motor vvire connector 4 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 5 Disconnect the ground wire from the wash pump motor assembly 6 Remove the motor pump assembly from the dishwasher 7 Reverse above procedures to install Inspect Washing Pump Check the electric part 1 Open the control panel and take out PCB 2 With the door closed unplug the CONS then use the multi meter O shelf to test resistance between two wires ML and ACN the normal resistance is about 1000 to 170 0 3 Ifthe 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 If 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 Ifthe 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
16. ata Nominal voltage 220 240VAC 167 10960 Delivery height Delivery performance 217l min 230VAC 11 Drain Pump gt Theory of parts Access drain pump 1 Drain off the vvater in the dishvvasher and disconnect the power supply Note Make sure to remove remained water in the dishwasher If not wet the floor 2 Loosen the hooks and then remove bottom board Note You should first loosen the top hooks then the left and right hooks and be care do not break the hook 3 Label and disconnect the two terminal lugs from the drain pump 4 Contrarotate the drain pump to take it off 5 Reverse the above procedure to install Inspect drain pump Check the electric part 1 Open the protecting box and take out the PCB 2 With the door closed unplug the CON3 and ACN wires then use the multi meter O shelf to measure the red wire PS and blue wire ACN the normal resistance is about 1500 to 1900 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 first If the problem hasn t been solved by re connection we should replace the drain pump 4 If 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 3 If the non return valve i
17. d check again Failure Solve the problem solve the problem Replace the Inlet Valve to solve problem OK solve the problem Replace the Pressure switch to 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 30 E3 Longer heating time I or not mentioned in E3tree gt Inspection Still wrong solve the problem Replace the Inlet Valve to solve Still wrong problem OK solve the problem Replace the Washing Pump to Check water Low Make a check of over heat Failure Replace Switch to temperature in the tub proof heating Micro svvitch solve the problem OK High Jammed Check whether the filter is Clear or replace filter jammed severely or not to solve the problem OK Failure Reconnect the wire of Make a check of Heater 5 mentioned in section 4 m Heater circuit and check again OK v Wenig E is Not Reconnect the wire of correct or not mentioned Washing Pump circuit and check again in section 4 v Check vvhether the i Not Reconnect the wire of OK NTC circu
18. d resistance is not correct it means the heater coil or the thermostat is broken we should replace the heating element or the thermostat 14 VVashing Pump Theory of parts Location of VVashing Pump The vvork principle Bottom View BLUE o BLUE RED T 9 BLA q i M main coil A assistant coil N Washing pump is a kind of asynchronism G lIIIIIIImZ motor with capacitor The stator consist of LET T silicon steel stack and two coils main coil 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 it is 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 Nd YXWA8 2F 1 YXVV48 2F x50l min 230VAC 250l min 230VAC performance Nh 0 5A 1096 0 85A 10 230VAC eli i urren Operating 0 24A 15 0 37A 10 230VAC current 3yF 425V 3pF 425V 15 VVashing Pump Theory of parts Access
19. essure Switch to solve problem 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 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 32 E6 Open circuit failure of thermistor E6 amp E7 tree gt Inspection OK solve the problem Replace the NTC to solve problem OK solve the problem Replace the NTC to Check whether the NTC Not Reconnect the wire of circuit is correct or not s 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 s Flowmeter circuit and mentioned in section 4 check again Still vvrong ES
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21. ircuit 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 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 28 Error Code Test program 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 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 E8 Diverter valve fault For models equipped with diverter alternative washing function In the process of test program in which diverter valve should be act if machine doesn t detect the feeding signal of diverter valve for 15 seconds or doesn t detect the diverter valve being positioned accurately in 60 seconds the E8 would occur In the process of washing program in which diverter valve should be act if machine doesn t detect the feeding signal of diverter valve for 15 seconds or doesn t detect the diverter valve being positioned accurately in 60 seconds the diverter valve would stop and the E8 would be set off after ending washing program When E8 occurs the drain pump
22. its correct NTC circuit and check solve the problem section 4 again Still wrong Replace the NTC to solve problem solve problem 31 Mo E4 Overflow S there any water o the bottom board E4 tree Inspection Make a check of Flooding Switch circuit normally closed No water Reconnect the wire of Flooding Switch circuit and check again Failure Make sure consumer use the proper detergent and Improper Give advice solve the problem Still vvrong Check vvhether Flooding Switch is blocked or not Blocked Repair or Replace it to solve problem rinse OK Make a check of Failure Drain Hose is kinked Failure Correct b Solve the problem Drain Hose or blocked OK del with Pressure Switch 83 63 Model with Flowmeter v Check whether the 2 0 Not Reconnect the vvire of OK 7f m Flowmeter circuit and Solve the problem section 4 check again Still wrong Replace the Flowmeter to solve problem Check whether the Not Reconnect the wire of OK Pressure Switch 83 63 Switch circuit solve the problem circuit is correct or not and check again Correct Still wrong Replace the Maybe there is a real leakage Pr
23. lve 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 4 f the water is continue entering we need replace the valve 10 Drain Pump gt Theory of parts Location of Drain Pump The vvork principle Bottom vievv Drain pump integrated into sump mus jam CRT Oui L DD TUNER LIT G EH A ERT 111111114 4 The vvork 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 power 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 It 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 d
24. r valve alternative washing function 27 Error Code gt Test program How does the appliance react when error code occurred E1 Water filling exceed pre set time 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 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 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 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 E4 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 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 E6 Open c
25. s 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 Bottom view The work principle heater fuse il pressure switch LLLI bel 1 1 Technical data Nominal voltage 230VAC Rating power 1800W Resistance 29 4 10940 167 C The defeat point 1 The heater coil is 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 13 Heater gt Theory of parts H LV zi 2 VEH Qul i NC a NO f il Illa 40 NO n ei L JN UNA B gj 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 4 Remove the 3 screws for fixing the heating element 5 Reverse above procedures to install Inspect heater 1 Remove bottom board 2 With the door closed use the multi meter O shelf to measure resistance between the two terminals shown in above right picture the resistance is about 290 to 310 3 If the measure
26. ted to appliance just as universal water inlet hose Inspect Safety Hose Electronic Aquastop Hose 1 Open the protecting box and take out the PCB 2 With the door closed unplug the CON3 and ACN wires then use the multi meter O shelf to measure resistance between the blue wire EV1 and blue wire ACN Open circuit and short circuit are both incorrect 3 Ifthe 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 Diverter valve gt Theory of parts Hydraulic scheme The work principle Diverter also named alternating spray arm flow control valve is used to control the flow of water between the upper and lower spray arms and can also be used on some models to stop the flow of water to the upper spray arm on models equiped with a half load feature Bottom spray arm Access Diverter valve 1 Disconnect power 2 Remove bottom board 3 Label and disconnect the 2 terminals 4 Remove the screws fastening the diverter valve to pump 5 Reverse the above procedure to install Sk Oo Wc ini N IN c UAI C ES m diver
27. ter valve Op RBZ ih d o 24 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 Hovv to activate Test Program Test Operation 47225 to activate VVith door opened Test Program Program Power To activate test program with the door opened and within 60s after power on hold down the 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 close the door to start the Test Program During test program running you can press Program button to jump into next step except inlet valve step Note The way to activate test program is slightly different between different models 25 Procedure Test Program Procedure of Test Program for models controlling water filing by flowmeter Display on Process Description the screen Intialization Power on stand by 05 or Open inlet valve and feeds with 3 6L water The diverter would z move to positon rotating both upper and lower sprayarms If the Turbidity Inlet Valve E i T Pr za did qus model is equipped with turbidity sensor turbidity value would be adjusted and shown on the screen Higher speed Run higher speed washing pump and 10s later run heating 04 Temper Washing Pump element until the water temperature reaches 57 C Then the
28. ts Description HEAT Output for Heating Element CL Input of line CN nput of neutral Input of inlet valve E Thermister Washing Pump S Drain Pump Dispenser nlet valve Softener Halfload Valve Salt detect Rinse detect Overflovv detect Flovvmeter Fan There is small pole s location difference betvveen different models But the marks on PCB have the same meaning described on the left side Inlet Valve gt Theory of parts Location of inlet valve Appearance Bottom view terminals connect to x V water hose s electric coil inside Z Ii LLLLELLL LLZ EEN CELO 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 cause 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
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30. 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 The vvork principle Mechanical Aquastop Hose Electronic Aquastop Hose Tvvo layers 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 Safety hose gt Theory of parts wire connecter no need to distinguish positive and negative electrode clamp ring 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 connec
31. would replace the NTC NTC resistance table 19 Flowmeter gt Theory of parts Location of Flowmeter 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 top panel and left 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 protecting box and take out 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 electrical pulse the multi meter will not send sound n this case it means something wrong
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