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Service Manual
CFCs have been used in refrigerant as refrigerator and the insulation materials for many years. But it
is now known that these compounds which once seemed so ideal for use as cleaning agents and in
refrigeration systems, destroy the earth's ozone layer as a result, an international body decided on a
total worldwide ban of harmful CFCs by the end of 1995.
The service information is designed for experienced repair technicians only and is not designed for use by the general
public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting
to service a product. Products powered by electricity should be serviced or repaired only by experienced professional
technicians. Any attempt to service or repair the product or products dealt within this service information by anyone
else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that
these critical parts should be replaced with manufacturer's specified parts to prevent shock, fire or other hazards. Do
not modify the original design without permission of manufacturer.
WARNING
IMPORTANT SAFETY NOTICE
Order No. PAPTH120404CE
(Revision : Jan. 2013)
NR-BU303MNHK
NR-BU343MNHK
NR-BU343MNX1
NR-BU303SNHK
NR-BU343SNHK
NR-BU343SNX1
Clear Stainless Silver (MN/S)
© Panasonic Appliances (Thailand) Co., Ltd. 2013.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
Refrigerator
Product Colour
Champagne (SN/N)
Destination
Hong Kong, India

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Summary of Contents for Panasonic NR-BU303MNHK

  • Page 1 Do not modify the original design without permission of manufacturer. © Panasonic Appliances (Thailand) Co., Ltd. 2013. All rights reserved. Unauthorized copying and...
  • Page 2: Table Of Contents

    NR-BU303 / BU343 CONTENT Page 1. Safety Cautions for Repairing 1.1 Warning 1.2 Caution 2. Specification and Components 2.1 NR-BU303 SERIES 2.2 NR-BU343 SERIES 3. Schematic Diagram 4. Performance Data 5. Troubleshooting Guide 6. Disassembly Instruction 6.1 Led Cover 6.2 Plate Duct PCT 7.
  • Page 3: Safety Cautions For Repairing

    NR-BU303 / BU343 1. SAFETY CAUTIONS FOR REPAIRING When you repair the refrigerator, please kindly take care for the following cautions. 1.1 Warning Before repairing unit, unplug supply cord • Before you repair the refrigerator, please unplug the supply cord. Use authentic parts when repairing •...
  • Page 4: Specification And Components

    NR-BU303 / BU343 2. SPECIFICATION AND COMPONENTS 2.1 NR-BU303 SERIES Model NR-BU303 Hong Kong Destination Code Attached Model Power Source 220V, 50Hz Plug Colour Model MN, SN Colour Code S, N System Spec. Induction Material Spec. PCM = SN, Stainless = MN Specification Capacity 296L...
  • Page 5: Nr-Bu343 Series

    NR-BU303 / BU343 2.2 NR-BU343 SERIES Model NR-BU343 Destination India / Hong Kong Code Attached Model 1N / HK Power Source 230V, 50Hz / 220V, 50Hz Plug B3P / S3P Colour Model MN, SN Colour Code S, N System Spec. Induction Material Spec.
  • Page 6: Schematic Diagram

    NR-BU303 / BU343 3. SCHEMATIC DIAGRAM - 6 -...
  • Page 7: Performance Data

    NR-BU303 / BU343 4. PERFORMANCE DATA 4.1 NR-BU303 SERIES (India) “ 3 ” “ 2 ” “ 1 ” Control Setting “ 3 ” “ 2 ” “ 1 ” -0.5 ± 2.5 3.0 ± 2.5 8.0 ± 2.5 Mean Fresh Food Compartment Temperature t3 (°C) Mean Freezer Load Temperature (°C)
  • Page 8: Troubleshooting Guide

    NR-BU303 / BU343 5. TROUBLESHOOTING GUIDE Cause : Not cool at all or not enough Does the compressor Check the start Replace the defect of operating? control circuit. electric part. (Capacity, Thermostat, PTC Relay and Protection) Check pressure of the Compressor ‘s Check oil color of the motor compressor by...
  • Page 9: Disassembly Instruction

    NR-BU303 / BU343 6. DISASSEMBLY INSTRUCTION 6.1 Led Cover Fig. 1 Fig. 2 - Take off by use small screwdriver put between gaps of Led cover with Plate duct PCT at lock as Fig. 1 - Use small screwdriver push up the Led cover for lock loose. - Change Led lamp by take off at Lead wire connection as Fig.
  • Page 10: Plate Duct Pct

    NR-BU303 / BU343 6.2 Plate Duct PCT Fig. 1 Fig. 2 Fig. 3 - Use small screwdriver open at the screw hole cover as Fig. 1 - Take off screws at the Plate duct PCT as Fig. 2 - Take off screws at the Plate duct PCB and Plate duct PC as Fig. 3 Fig.
  • Page 11: Parts Exploded View And Replacement Parts List

    NR-BU303 / BU343 7. PARTS EXPLODED VIEW AND REPLACEMENT PARTS LIST 7.1 Parts Exploded View : Body - 11 -...
  • Page 12: Part Exploded View : Door

    NR-BU303 / BU343 7.2 Parts Exploded View : Door ( FOR NR-BU303 SERIES ) - 12 -...
  • Page 13: Part Exploded View : Packing

    NR-BU303 / BU343 7.3 Parts Exploded View : Packing STICKER MODEL NAME STICKER BARCODE PACKING BELT TOP PAD BACK TOP PAD FRONT FOAM TOP PAD L, R PLASTIC COVER PAPER PROTECTOR FRONT BOTTOM TRAY AS. - 13 -...
  • Page 14: Replacement Parts List : Nr-Bu303 / Nr-Bu343

    NR-BU303 / BU343 Important safety notice : Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturer’s specified part. 7.4 Replacement Parts List : NR-BU303 / NR-BU343 Parts List MODEL / Q’TY REF.
  • Page 15: Parts List

    NR-BU303 / BU343 Parts List MODEL / Q’TY REF. PART NAME PART NO. SAFETY REMARK NR-BU303 NR-BU343 WIRING DIAGRAM (CMPT) - SN CNRAH-310560 SNHK WIRING DIAGRAM (CMPT) - SN CNRAH-310600 SNHK SUPPLY CORD - B3P CNRAG-168371 SUPPLY CORD - S3P CNRAG-168351 HEXAGON NUT 8 CNR38-8170A1...
  • Page 16: Packing List

    NR-BU303 / BU343 Parts List MODEL / Q’TY REF. PART NAME PART NO. SAFETY REMARK NR-BU303 NR-BU343 LABEL NAME - MN CNRAH-301470 MNX1 LABEL NAME - MN CNRAH-310670 MNHK LABEL NAME - MN CNRAH-310710 MNHK LABEL NAME - SN CNRAH-301460 SNX1 LABEL NAME - SN CNRAH-310570...
  • Page 17: Detail Change Notice

    NR-BU303 / BU343 DETAIL CHANGE NOTICE REVISION ITEM NO. PAGE DETAIL REMARK JAN. 2013 ADD HONG KONG MODEL NR-BU303, 343MNHK / NR-BU303, 343SNHK REVISE RUNNING PAGE NO. AND MODEL REVISE FROM P. 2 ~ 16 ADD SPECIFICATION AND COMPONENTS ADD MODEL OF HONG KONG OF NR-BU303 SERIES REVISE DETAIL OF SPEC.

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