Panasonic NP-6R2MUQNZ-NZ Service Manual
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Panasonic NP-6R2MUQNZ-NZ Service Manual

Panasonic NP-6R2MUQNZ-NZ Service Manual

Stand-alone dishwasher
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Stand-alone Dishwasher
NP-6R2MUQNZ-NZ
Model No.
Destination:
New Zealand
© 2017 Panasonic Manufacturing Malaysia Berhad (6100-K).
Unauthorized copying and distribution is a violation of law.
ORDER NO. PMMA170535CE
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Summary of Contents for Panasonic NP-6R2MUQNZ-NZ

  • Page 1 ORDER NO. PMMA170535CE Stand-alone Dishwasher NP-6R2MUQNZ-NZ Model No. Destination: New Zealand © 2017 Panasonic Manufacturing Malaysia Berhad (6100-K). Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PAGE PAGE 1 Specifications ------------------------------------------------------3 5.13.1. E1 tree ------------------------------------------------- 32 2 Control Panel -------------------------------------------------------4 5.13.2. E3 tree ------------------------------------------------- 33 3 Disassembly and Assembly Instructions -----------------5 5.13.3. E4 tree ------------------------------------------------- 34 3.1. Access PCB -------------------------------------------------5 5.13.4. E6 & E7 tree------------------------------------------ 35 3.1.1.

  • Page 3: Specifications

    1 Specifications Model NP-6R2MUQNZ Power Source 220 - 240 V~ Wattage 1760 ~ 2100 W Frequency 50 Hz Water Pressure 0.04 - 1.0 MPa Capacity 12 Settings Dimensions (L × W × H) Approx. 600 mm × 600 mm × 850 mm Nett Weight Approx.

  • Page 4: Control Panel

    2 Control Panel 1. ON/OFF button: 6. Programme indicators: To show which programme has been chosen. To turn ON/OFF the power supply. 2. Time Delay button: Press the button to delay. User can delay the washing time from 7. Programme Selection button: 1 to 24 hours.

  • Page 5: Disassembly And Assembly Instructions

    3 Disassembly and Assembly Instructions 3.1. Access PCB 3.1.1. 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.

  • Page 6: Access Inlet Valve

    3.2. 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. 4. Disconnect the 2 terminal lugs from the inlet valve. 5. Pull out the valve a little then turn it in anti-clockwise direction it to take it off. 6.

  • Page 7: Access Drain Pump

    3.3. Access drain pump 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. 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.

  • Page 8: Access Heater

    3.4. 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.

  • Page 9: Access Washing Pump

    3.5. Access Washing Pump 1. Disconnect power. 2. Remove bottom board. 3. Label and disconnect the 2 terminals to the motor wire 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.

  • Page 10: Access Safety Hose

    3.8. Access Safety Hose 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 is connected to appliance just as universal water inlet hose.

  • Page 11: Block Diagram

    4 Block Diagram 4.1. Water Circuit...
  • Page 12 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.

  • Page 13: Troubleshooting

    5 Troubleshooting 5.1. Location...
  • Page 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: Pcb

    4. Ensure the switch is inserted as the condition below: 5.2. 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. 5.2.1. View of PCB...

  • Page 16: Description

    Description 5.2.2. Mark Function HEAT Output for Heating Element Input of line Input of neutral EV-L Input of inlet valve Thermister Washing Pump Drain Pump D/ED Dispenser Inlet valve Softener Halfload Valve Salt detect Rinse detect IAQS Overflow detect Flowmeter 5.3.

  • Page 17: Technical Data

    5.3.3. Technical data Nominal voltage 220-240VAC Frequency 50/60Hz Resistance Approx: 3.4 - 4.4kΩ 100%ED T25 Work duty 3min/5min T60 Flux 2.5L/min 15% Power Work Pressure 0.04 - 1MPa 5.3.4. Inspect inlet valve 5.3.4.1. Check electric part 1. Open the protecting box and take out the PCB; 2.

  • Page 18: Drain Pump

    5.4. Drain Pump 5.4.1. Working 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.

  • Page 19: Inspect Drain Pump

    Inspect drain pump 5.4.4. 5.4.4.1. 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 Ω shelf to measure the red wire (PS) and blue wire (ACN), the normal resistance is about 150Ω...

  • Page 20: Heater

    5.5. Heater 5.5.1. Technical data Nominal voltage 230VAC Rating power 1800W Resistance 29.4 10%kΩ Fuse 167°C 5.5.2. Possible cause of Malfunction 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.

  • Page 21: Washing Pump

    5.6. Washing Pump 5.6.1. Possible cause of Malfunction 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.

  • Page 22: Inspect Washing Pump

    5.6.3. Inspect Washing Pump 5.6.3.1. Check the electric part 1. Open the control panel and take out PCB; 2. With the door closed, unplug the CON5, then use the multi-meter Ω shelf to test resistance between two wires (ML and ACN), the normal resistance is about 100 Ω...

  • Page 23: Pressure Switch

    5.7. Pressure Switch 5.7.1. Working 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.

  • Page 24: Ntc

    5.8. 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 25: Inspect Ntc

    5.8.2. 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 Ω shelf to test resistance between two blue wires (RE and GND), the normal resistance is shown in below table. 3.

  • Page 26: Flowmeter

    5.9. Flowmeter 5.9.1. Working Principle Flowmeter is integrated into Air Breaker. 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 27: Inspect Flowmeter

    5.9.2. 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.

  • Page 28: Safety Hose

    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.

  • Page 29: Inspect Safety Hose

    5.10.3. Inspect Safety Hose 5.10.3.1. 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 Ω shelf to measure resistance between the blue wire (EV1) and blue wire (ACN).

  • Page 30: Attention

    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.

  • Page 31: Error Code Symptom

    5.12.3. Error code symptom 5.12.3.1. 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.

  • Page 32: Inspection

    5.13. Inspection 5.13.1. E1 tree...

  • Page 33: E3 Tree

    5.13.2. E3 tree...

  • Page 34: E4 Tree

    5.13.3. E4 tree...

  • Page 35: E6 & E7 Tree

    5.13.4. E6 & E7 tree 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 for reference only.

  • Page 36: Troubleshooting

    5.14. Troubleshooting...

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