Panasonic NR-BN31AS1, Service Manual

Page 1: ...stination E Europe Continental except France F France B U K TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions 2 2 Specifications 5 3 Technical Descriptions 6 4 Location of Controls and Components 8 5 Installation Instructions 10 6 Operating Instructions 12 7 Service Mode 15 8 Troubleshooting Guide 25 9 Disassembly and Assembly Instructions 31 10 Schematic Diagram 43 11 Exploded View and Replacement...

Page 2: ...2 1 Safety Precautions ...

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Page 5: ...502 Ambient temperature sensor ATC Not used Defrost temperature sensor DFC ESCOP B57020 M2502 Compressor Model NLU8 0KK 1 Rotation speed 3000 rpm Curled resistance cord at 25 C Main wiring 26 Ohm Aux wiring 23 Ohm Overlord relay Model In side the compressor Operating temperature without power 110 C 130 C Return temperature 65 C 90 C Operating current A Make 7 5A Break 4 5A Fan motor Model Rating B...

Page 6: ...g of fridge compartment first the PC Damper opens and after 30 seconds the Fan Motor switches on Fan Motor switches on with time delay after the compressor start up depending on the last cycle If the last cycle was a normal cycle the Fan Motor switches on immediately After defrosting of the evaporator the Fan Motor starts to function after 4 minutes Fan Motor operation is suspended if the freezer ...

Page 7: ...itch off Based on request for cooling of freezer compartment the compressor and Fan Motor of freezer compartment are controlled Defrosting Unconditional start of defrosting is installed in the following cases 1 At switch on of Fast Freeze function if the compressor of freezer compartment does not function 2 At switch on of Super Cool function if the compressor of freezer compartment does not funct...

Page 8: ...8 4 Location of Controls and Components 4 1 Display and Control Panel ...

Page 9: ...9 4 2 Components ...

Page 10: ...10 5 Installation Instructions ...

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Page 12: ...12 6 Operating Instructions 6 1 Setting the temperature 6 1 1 Fridge compartment PC 6 1 2 Freezer compartment FC 6 1 3 Fresh Zone Crisper 6 2 Functions 6 2 1 Super Cool Mode ...

Page 13: ...13 6 2 2 Super Freeze Mode 6 2 3 Jet Freeze Mode 6 2 4 ECO Mode ...

Page 14: ...14 6 2 5 Holiday Mode 6 2 6 Alarm Mode 6 2 7 Child safety lock ...

Page 15: ... General Service mode is intended for service interventions In service mode it is possible to select optionally among the outputs From service mode we always enter normal mode of operation Display Panel A ssy Display Panel A ssy on appliance door ...

Page 16: ...16 7 1 1 How to start 7 1 2 How to stop 7 1 3 Summary of Service Mode ...

Page 17: ...17 7 1 4 Service Mode 00 Main PCB 7 1 5 Service Mode 01 Display Panel PCB ...

Page 18: ...18 7 1 6 Service Mode 02 Compressor 7 1 7 Service Mode 03 Fan Motor ...

Page 19: ...19 7 1 8 Service Mode 04 Defrost Heater 7 1 9 Service Mode 05 PC Damper ...

Page 20: ...20 7 1 10 Service Mode 06 LED Lamp 7 1 11 Service Mode 07 PC Temp Sensor ...

Page 21: ...21 7 1 12 Service Mode 08 FC Temp Sensor 7 1 13 Service Mode 09 Defrost Sensor ...

Page 22: ...22 7 2 Measuring Points on Main PCB Box Note For more detail refer to the Schematic Diagram on page 44 7 3 Value of Temperature sensors ...

Page 23: ...play of temperature in freezer compartment shows E3 On models with one digit temperature display in fridge compartment E and 1 are shown alternately with 1 second interval while the regulations function each one in accordance with their time regime Alarms Alarms of too high temperature in fridge freezer compartment In case the temperature in fridge compartment exceeds 13 C and in freezer compartme...

Page 24: ... the key is released the display shows set temperature Child lock is cancelled by long press on the key 1 In case the alarm is activated it can be cancelled with alarm cancellation key without having to leave the Child lock mode Error display Error E1 is shown on temperature display in fridge compartment For models with single digit display the display alternately shows the errors 1 second E 1 sec...

Page 25: ...25 8 Troubleshooting Guide 8 1 Not cooling at all Both PC FC compressor does not operate ...

Page 26: ...26 8 2 PC is not cooling or poor cooling FC cooling condition is normal ...

Page 27: ...27 8 3 FC is not cooling Compressor operate ...

Page 28: ...28 8 4 Cooling system trouble ...

Page 29: ...29 8 5 Communication trouble 8 6 Temperature sensor trouble ...

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Page 31: ...Panel A ssy Before you do that please protect the door with scotch tape Carefully lift the screw driver to detach the Display Panel A ssy Be careful not to damage cable with connector On the control unit there are two terminal connectors Right one is for connecting Display Panel A ssy with power board Left is for uploading SW optional There are also two connectors with cable inside the opening One...

Page 32: ...o the left 3 Remove LED Lamp Assy and disconnect the connector 9 3 Main PCB 1 Main PCB is installed at the upper side of refrigerator 2 Slide both the Head Panel Cover R and the Head Panel Cover L to remove 3 Unscrew the two screws fixing the Head Panel Cover Center and remove it 4 Disconnect the connector ...

Page 33: ...rewdriver draw out the PCB box toward you 6 Unhook the connector s hook then disconnect the con nectors 7 Main PCB Assy Main PCB with PCB box 9 4 Air Flow Ins PC 1 First remove the Glass Shelves Bottle Support and Drawers then unscrew the two screws 2 Remove the PC Air Duct Lower ...

Page 34: ...lightly from the left side then the connector of Air damper can be seen 9 5 Fan Assy 1 First remove the FC Drawers then unscrew the four screws 2 Pull the FC Air Duct Cover toward then the connector of Fan Motor can be seen 3 Unhook the six hooks at the back side then remove the FC Air Duct Cover ...

Page 35: ... 9 6 Door Switch FC 1 First remove the FC Drawers 2 Unscrew the screw fixing the Door Switch Cover 3 Open the Door Switch Cover 4 Unhook the hook then remove the Door Switch FC 5 Disconnect the connector ...

Page 36: ...off approx 25mm of additional cable insulation and 5mm of basic insulation of the conductor 4 First crimp the enclosed end splices on conductor of the new sensor Place the enclosed thermo shrinkable bushing Crimp end splices on conductors of cut cable 5 Use hair dryer and heat the bushings so that they tightly wrap the conductors and prevent moisture from breaking through the joint 6 Place the sen...

Page 37: ...37 9 8 Positions of Temperature Sensors Thermal Fuse Defrost Heater and PC Door Switch 9 9 Changing The doorway Direction Warning Make sure the unit is unplugged ...

Page 38: ...Disconnect the Display Connector 4 Unscrew the screws fixing the Upper Hinge 5 Remove the PC Door 6 Remove the PC Hinge Cover VC 7 Slide the Head Panel Cover Right and Head Panel Cover Left then remove its 8 Unscrew the screws fixing the Head Panel Cover Center and remove it ...

Page 39: ...ion 11 Screw the screws fixing the Head Panel Cover Center 12 Slide the Head Panel Cover Left and Head Panel Cover Right then fix it 13 Unscrew the Middle Hinge fixing screw and remove it 14 Remove the FC Door 15 Remove the Middle Hinge Plugs and the Screw cap then unscrew the screw 16 Screw the screw Install the Middle Hinge Plugs and the Screw cap ...

Page 40: ...or Limiter Right then install FC Door Limiter Left You can find the FC Door Limiter Left in the user manual bag 20 Assemble the FC Door 21 Replace the Door Bushing and the FC Door Plug 22 Remove the PC Door Limiter Right then install PC Door Limiter Left You can find the PC Door Limiter Left in the user manual bag 23 Turn the Middle Hinge upside down and screw it The thick washer on the downside 2...

Page 41: ... the Upper Hinge fixing screws 29 Install the Hinge Cover 30 Fix the Hinge Cover VC and the PC Door Edge Cover Right 31 Remove the display panel by using a small flat blade screwdriver Refer to the Replacement of Display 32 Replace the connector right and the connector left Refer to the Replacement of Display ...

Page 42: ...42 33 Remove the Filling Plugs 34 Unscrew the Handles fixing Torx screws using the Torx screwdriver 35 Screw the Handles to the right side 36 Install the Filling Plugs to the left side ...

Page 43: ...43 10 Schematic Diagram ...

Page 44: ...44 11 Exploded View and Replacement Parts List 11 1 Interior Parts ...

Page 45: ...413279 GLASS SHELF LOWER FC 1 1 1 1 1 1 1330 CNR 435969 DRAWER LOWER FLAP ASSY PC 1 1 1 1 1 1 1331 CNR 435902 DRAWER COVER MIDDLE FC 1 1 1 1 1 1 1332 CNR 435904 DRAWER COVER UPPER FC 1 1 1 1 1 1 1333 CNR 422798 DRAWER COVER LOWER FC 1 1 1 1 1 1 1334 CNR 408609 MIDDLE HINGE 1 1 1 1 1 1 1335 CNR 462227 LOWER HINGE 1 1 1 1 1 1 1336 CNR 421088 HEAD PANEL COVER SIDE 2 2 2 1336 CNR 407852 HEAD PANEL COV...

Page 46: ...46 11 1 2 Door Assy Parts ...

Page 47: ...ER PC 2 2 2 2 2 2 1320 CNR 422779 DOOR TRAY LOWER PC 1 1 1 1 1 1 1321 CNR 411660 EGGS RACK 1 1 1 1 1 1 1322 CNR 416612 BOTTLE RETAINER 1 1 1 1 1 1 1347 CNR 409806 MULTIFUNCTIONAL CONTAINER 1 1 1 1 1 1 1348 CNR 409808 DOOR TRAY LOWER PROFILE PC 1 1 1 1 1 1 1356 CNR 421444 DOOR EDGE COVER LEFT PC 1 1 1 1356 CNR 415301 DOOR EDGE COVER LEFT PC 1 1 1 1357 CNR 421455 DOOR EDGE COVER RIGHT PC 1 1 1 1357 ...

Page 48: ...48 11 1 4 Multiflow Parts ...

Page 49: ...254 PC AIR DUCT LOWER 1 1 1 1 1 1 with Air Damper 1361 CNR 436878 AIR FLOW INS PC 1 1 1 1 1 1 1362 CNR 413239 FC AIR DUCT WITH FAN 1 1 1 1 1 1 1364 CNR 408281 FC AIR DUCT COVER 1 1 1 1 1 1 1366 CNR 435561 DRAIN GROOVE WITH HEATER 1 1 1 1 1 1 1371 CNR 435979 PC AIR DUCT UPPER 1 1 1 1 1 1 1388 CNR 436308 AIR CHANNEL COVER 1 1 1 1 1 1 ...

Page 50: ...50 11 1 6 Unit Parts ...

Page 51: ...CAPACITOR 1 1 1 1 1 1 ART No 01 and 02 165 CNR 463374 CAPACITOR 1 1 1 1 1 1 ART No 03 188 CNR 436548 TERMAL FUSE WITH HAR NESS 1 1 1 1 1 1 209 CNR 436494 SUPPLY CORD 1 1 1 1 209 CNR 443994 SUPPLY CORD 1 1 210 CNR 411057 COMPRESSOR 1 1 1 1 1 1 ART No 01 and 02 with Starting Relay and Capacitor 210 CNR 336725 COMPRESSOR 1 1 1 1 1 1 ART No 03 with Con nection Box and Capacitor 1340 CNR 408379 EVAPORA...