Panasonic NP-6F2MUQNZ-NZ Service Manual Download Page 29 | Manualshive

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5.10. Safety Hose

5.10.1. Location of Safety Hose

5.10.2. Working Principle

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 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.

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Summary of Contents for NP-6F2MUQNZ-NZ

Page 1: ...017 Panasonic Manufacturing Malaysia Berhad 6100 K Unauthorized copying and distribution is a violation of law ORDER NO PMMA170434CE Stand alone Dishwasher Model No NP 6F2MUQNZ NZ Destination New Zealand ...

Page 2: ...eater 21 5 5 1 Technical data 21 5 5 2 Possible cause of Malfunction 21 5 5 3 Inspect heater 21 5 6 Washing Pump 22 5 6 1 Possible cause of Malfunction 22 5 6 2 Technical data 22 5 6 3 Inspect Washing Pump 23 5 7 Pressure Switch 24 5 7 1 Working Principle 24 5 8 NTC 25 5 8 1 Working Principle 25 5 8 2 Inspect NTC 26 5 9 Flowmeter 27 5 9 1 Working Principle 27 5 9 2 Inspect Flowmeter 28 5 10 Safety...

Page 3: ...ecifications Model NP 6F2MUQNZ Power Source 220 240 V Wattage 1760 2100 W Frequency 50 Hz Water Pressure 0 04 1 0 MPa Capacity 14 Settings Dimensions L W H Approx 600 mm 600 mm 850 mm Nett Weight Approx 48 kg ...

Page 4: ...2 ON OFF button To turn ON OFF the power supply 3 Wash Zone button Dual zone wash function press the button to select either Upper Basket or Lower Basket or both loaded and the response indicator will light 4 Function button Only Intensive Heavy ECO Glass have this function Express dry indicator Extra wash indicators 5 Child Lock Press the two buttons 3 and 4 simultaneously to lock unlock the prog...

Page 5: ...tom 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 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 ...

Page 6: ... drop 3 Remove the cover of the bottom board 4 Disconnect the 2 terminal lugs from the inlet valve 5 Pull out the valve a little then turn it in anti clockwise direction to take it off 6 Remove the clamp and disconnect the inlet hose to air breaker from the water valve 7 Reverse above procedures to install ...

Page 7: ...sher 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 Turn the drain pump in anti clockwise direction to take it off 5 Reverse the above procedure to install ...

Page 8: ... 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 ...

Page 9: ...p assembly from the dishwasher 7 Reverse above procedures to install 3 6 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 3 7 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 in...

Page 10: ...lled out 3 Reverse the above procedure to assemble Mechanical Aquastop hose is connected to appliance just as universal water inlet hose 3 9 Access Diverter valve 1 Disconnect power 2 Remove bottom board 3 Label and disconnect the 4 terminals 4 Remove 1 screw fastening the diverter valve to sump 5 Contrarotate the diverter valve to take it off 6 Reverse the above procedure to install ...

Page 11: ...11 4 Block Diagram 4 1 Water Circuit ...

Page 12: ... 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 ...

Page 13: ...13 5 Troubleshooting 5 1 Location ...

Page 14: ...14 1 Ensure there is no wire clamped by PCB Casing after you closed the PCB Box 2 Ensure the foam is already insert into the overflow assembly 3 Ensure all terminals is inserted firmly ...

Page 15: ...e the switch is inserted as the condition below 5 Ensure both wires are connected to only one microswitch on the door switch assembly which means that both wires are always at the same side such as pictures below ...

Page 16: ... the feedback information etc 5 2 1 View of PCB 5 2 2 Description Mark Function HEAT Output for Heating Element ACL Input of line ACN Input of neutral EV L Input of inlet valve RE Thermister ML Washing Pump PS Drain Pump D ED Dispenser EV1 Inlet valve EV2 Softener EV3 Halfload Valve ISS Salt detect ISB Rinse detect IAQS Overflow detect FM Flowmeter FAN Fan ...

Page 17: ...nto machine when it receive the order given by controller 5 3 2 Possible cause of Malfunction 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 ...

Page 18: ...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 If the resistance is OK we need to inspect the valve body 5 3 4 2 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 val...

Page 19: ...roken 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 w...

Page 20: ...e 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 5 4 4 2 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 is wrongly assemb...

Page 21: ...not work It will cause the E3 error 5 5 3 Inspect heater 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 29Ω to 31Ω 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 Nomin...

Page 22: ... 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 5 6 2 Technical data Models YXW48 2F 1 YXW48 2F Items Nominal voltage 220 240VAC 220 240VAC Frequency 50Hz 50Hz Resistance Main coil 159 4 10...

Page 23: ...irst 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 5 6 3 2 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 t...

Page 24: ...witch 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 ...

Page 25: ...25 5 8 NTC 5 8 1 Working Principle Negative Temperature Coefficient Thermistor is integrated into sump which is used for measuring temperature of water in the tub ...

Page 26: ...es 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 In this case we should check the connection first If the problem hasn t been solved by re connection we would replace the NTC NTC resistance table NTC 15 C 17 48KΩ 20 C 12 12KΩ 25 C 10KΩ 30 C 8 299KΩ 40 C 5 807KΩ 50 C 4 144KΩ 60 C 3 011KΩ 70 C 2 224KΩ 80 C 1 667KΩ 85 C ...

Page 27: ... Function of Flowmeter 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 ...

Page 28: ...rm 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 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 w...

Page 29: ...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 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...

Page 30: ...se 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 5 10 3 2 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 5 11 Diverter valve 5 11 1 Working Principle Diverter also named alternating flow co...

Page 31: ...display Other error alarms would be shown in the same manner The corresponding relation between indicator combination and error code shown in above figure 5 12 2 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 E8 are valid Note E8 is valid for models e...

Page 32: ...r 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 5 12 3 5 E7 Short circuit failure of thermistor In test program once short ...

Page 33: ...33 5 13 Inspection 5 13 1 E1 tree ...

Page 34: ...34 5 13 2 E3 tree ...

Page 35: ...35 5 13 3 E4 tree ...

Page 36: ...s 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 for reference only ...

Page 37: ...37 5 14 Troubleshooting ...

Page 38: ...38 ...

Page 39: ...39 ...

Page 40: ...40 ...

Page 41: ...41 ...

Page 42: ...utton 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 Start Pause button to jump into next step except inlet valve step Note The way to activate test program is slightly different between different models Test Program Operation How to activate Test Program With door op...

Page 43: ...y sensor turbidity value would be adjusted and shown on the screen 2 04 Temperature value Higher speed Washing Pump and Heating Element Run higher speed washing pump and 10s later run heating element until water temperature reaches 57 C Then the machine will pause Press Start Pause button to jump into the next step 3 03 Lower speed Washing Pump and Dispenser 2s later run lower speed washing pump f...

Page 44: ...44 7 Exploded View 112 111 107 109 106 108 101 115 104 105 102 103 110 104 113 114 ...

Page 45: ...45 201 202 203 204 207 210 203 209 208 217 218 220 221 219 214 212 213 211 216 216 326 326 ...

Page 46: ...46 302 301 303 305 308 309 316 312 314 315 319 310 311 312 313 317 304 306 304 307 308 309 310 311 318 323 324 321 322 320 329 330 331 330 331 325 326 328 327 ...

Page 47: ...47 401 405 408 411 412 413 414 415 416 417 418 419 422 423 424 425 426 427 408 411 412 419 1 429 430 433 431 432 321 ...

Page 48: ...48 501 505 510 511 512 513 ...

Page 49: ...49 601 604 605 606 607 609 610 611 612 614 618 624 625 628 629 630 631 632 ...

Page 50: ...50 701 705 709 711 ...

Page 51: ...51 P1 P2 P3 P5 P4 ...

Page 52: ...9000015 SCREW M5X8F 4 217 12676000000399 NOISE ABSORBER FRONT DOOR 1 218 17476000007302 HARNESS 1 219 12876000000129 DOOR SUPPORT EPE FOAM 1 220 12176000003446 PLASTIC COVER FOR DISPENSER 1 221 12876000000128 DOOR SUPPORT EPE FOAM 1 301 12176000A34087 TOP PANEL ASSEMBLY 1 302 12276000000959 LEFT SIDE PANEL 1 303 12176000003869 UPPER BACK SUPPORT 1 304 12176000008517 CUTLERY SHELF GUIDER LINK STOPP...

Page 53: ...00008645 LOWER SPRAYER SEAT 1 512 12176000003689 MAIN FILTER 1 513 11303125000152 SCREW ST3 9X16F 5 601 12676000001461 SUMP GASKET 1 604 12176000009640 FILTER HANDLE 1 605 12976000000327 396 CLAMPING 1 606 12176000003676 CYLINDER FILTER 1 607 12676000000146 WASHING PUMP OUTLET HOSE 1 609 17476000001269 DISTRIBUTARY VALVE ASSEMBLY 1 610 11001011000449 DRAINAGE PUMP 1 611 12176000016225 SUMP ASSEMBL...

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