Panasonic NR-B32FW3, Service Manual

Page 1: ...Europe Continental B U K G Germany TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions 2 2 Specifications 5 3 General Introduction 6 4 Features 7 5 Technical Descriptions 13 6 Location of Controls and Components 17 7 Installation Instructions 19 8 Test Mode 23 9 Service Mode 24 10 Troubleshooting Guide 27 11 Disassembly and Assembly Instructions 31 12 Maintenance 48 13 Dimensions 51 14 Schematic Diag...

Page 2: ...uct the customer not to approach the place of discharge and not to use fire Always use a pipe cutter for removing pipes If you use a welding machine the refrigerant remaining in the pipe or compressor could catch fire and explode Pipes must be blown out with nitrogen before welding to discharge any remaining refrigerant Always use the swage lock for sealing after filing with refrigerant If you use...

Page 3: ... the refrigerant is flammable any damage could lead to fire explosion If the refrigeration circuit is damaged do not touch the refrigerator or use a naked flame Open windows for Ventilation As the refrigerant is flammable any damage could lead to fire explosion Disposal of a faulty compressor must be performed outdoors where there is no fire source The quantity of refrigerant in a service can carr...

Page 4: ...ng Also the heater can be very hot during power supply and immediately after power supply is stopped Be careful not to burn yourself by touching very hot parts High temperature hazard Take care of very hot parts after welding Pipes etc are very hot after welding Be careful not to burn yourself by touching very hot parts Take care when filling discharging refrigerant Liquid refrigerant directly tou...

Page 5: ...hock classes Class I Climate Class SN T Refrigerator compartment sensor Rating PCC B 3808K 2 R 0 C 6 409kΩ Freezer compartment sensor Rating FCC B 3850K 2 R 20 C 18 9kΩ Vegetable compartment sensor Rating SCC B 3808K 2 R 3 C 7 490kΩ Ambient compartment sensor Rating ATC B 3435K 2 R 25 C 10 0kΩ Defrost temperature sensor Rating DFC B 3819K 2 R 10 C 3 899kΩ Compressor Type Full hermetic reciprocatin...

Page 6: ...6 3 General Introduction 3 1 Flow of Refrigerant And Air ...

Page 7: ...7 4 Features 4 1 Features 4 1 1 High Efficiency Cabinet ...

Page 8: ...8 4 1 2 Storage Solution ...

Page 9: ...9 4 1 3 Refrigerator Compartment 4 1 4 Hygiene Active and Multi Airflow ...

Page 10: ...10 4 1 5 Vegetable Case 4 1 6 Vitamin Safe ...

Page 11: ...11 4 1 7 Hygiene Active ...

Page 12: ... 1 Features and functions 4 2 2 User alert functions The following user alert functions are activated when a door has been left ajar for a prolonged period of time or when the tempera ture inside the refrigerator has risen ...

Page 13: ...ed though the power supply of this product is turned off The setting temperature is fixed after the time to have set temperature change passed more than 5 seconds 2 The setting temperature The temperature when it set on 21 C The OFF ON temperature value corresponding to each ATC temperature is as shown in the next graph 5 1 2 PC temperature control PC damper is controlled by the PCC temperature 1 ...

Page 14: ...responding to each ATC temperature is as shown in the next graph 5 1 3 SC temperature control The twin damper motor is turned on and off detecting the SCC temperature The temperature when it set on 2 C The OFF ON temperature value corresponding to each ATC temperature is as shown in the next graph ...

Page 15: ...in other rotational speeds The use rotational speed Notes In case of setting of Super Freeze the rotational speed of Super Freeze take precedence 5 6 Compressor starting control The compressor is not start while waiting timer is operating And when power is turned on compressor staring control is not available 5 7 Demo Control To promote in store sales 5 7 1 Start Simultaneously open FC door and PC...

Page 16: ... diagnosis is not displayed 3 Load operation Compressor stops Defrosting heater stops SC heater stops Damper stops 4 Others Temperature display freezing chamber 20 chilling chamber 4 temperature variable chamber 2 Temperature rise alarm none Rotation speed display 6 pieces fixed In case of power failure reset demo mode will be stored and continued 5 7 3 Auto Demo Panel Display After entering demo ...

Page 17: ...e displayed temperature may differ from the actual temperature This refrigerator uses a microprocessor to control the temperature The temperature inside the refrigerator varies depending on such factors as changes in the room temperature the speed at which the compressor is operating how frequently the doors are opened and closed and how much food is stored inside and how it is stored ...

Page 18: ...18 6 2 Components ...

Page 19: ...19 7 Installation Instructions 7 1 Installation Instructions ...

Page 20: ...20 ...

Page 21: ...21 7 2 Setting the temperature ...

Page 22: ...22 7 3 Using the handy functions ...

Page 23: ...then press buttons to select R1 R5 1 TEST 1 Forced defrosting Make a short circuit between control substrate TEST 1 and GND to start forced defrosting When history message appears press button for 1 second to display dEF for 0 5 seconds and start forced defrosting 2 TEST 2 cancellation of standby time Make a short circuit between control substrate TEST 2 and GND to set compressor startup standby t...

Page 24: ...area and is displayed at Freezer temperature display area B How to end It ends when the select button is pressed less than one second during Self diagnosis display mode Or 7 minutes after starting the Self Diagnosis Display Mode Self Diagnosis Mode ends automatically 9 1 2 Failure History Display Mode A How to start When the select button on control panel is pressed more than 10 seconds and Self d...

Page 25: ...uble 1 FC defrost heater Temperature of defrost Sensor does not reach cut off tempera ture Replace parts 2 Thermal fuse 3 Control PCB H35 Refrigerating unit has trouble Gas leakage at high pressure side Poor compression 1 High pressure side Even if compressor runs FC temperature and PC tempera ture would not fall any more Replace parts 2 Compressor H36 Refrigerating unit has trouble Gas leakage at...

Page 26: ...Press the button for more than 1 second After d EF will appear for 0 5 second it will disappear This means that Forced Defrosting Mode is ON B How to end It ends when temperature detected by Sensor Defrost reaches defrost temperature or after 1 hour during this mode 9 2 2 Speed Variable Control Mode A How to start When the select button on control panel is pressed more than 10 seconds Self Diagnos...

Page 27: ...27 10 Troubleshooting Guide 10 1 FC and PC not cooling at all Compressor does not run ...

Page 28: ...28 10 2 PC is not cooling or poor cooling FC cooling condition is normal ...

Page 29: ...29 10 3 FC is poor cooling Compressor run ...

Page 30: ...30 10 4 VC is poor cooling or excessive cooling ...

Page 31: ...C room Please put a tape on the part where a screwdriver touch to prevent being damaged on the inner surface 2 Take the LED board out from the hooks two 3 Pull the connector of LED board out while pressing the connector like the figure it s possible to remove NOTES Be careful not to break LED board when it is removed and installed 11 1 2 Duct PC and Ag Filter board 1 Pry off and remove the Cap PC ...

Page 32: ...OF AG FILTER Pull Ag Filter out softly from hooks of Holder Ag 5 Remove the fixed screw one in a screwdriver then remove the Sensor PC Cover you can see the Sensor PC inside the PC room THE POINT OF WORK How to use scotch lock Scotch lock is used when a branch circuit is made in par allel or is connected with the series with a DC electric cir cuit ...

Page 33: ... to be bite the wires by Sensor PC Cover when store the wires and the Scotch Lock in it 11 2 Disassembly of VC Vegetable Compartment 11 2 1 PCB VC 1 Remove Crisper A ssy and Plate Crisper Pull Crisper Case take it out from each two portions of Rail VC right and left Pull Plate Crisper from upper side in VC You can see the figure 11 2 2 1 2 Remove the screw that is fixation of Cover LED on upper si...

Page 34: ... connector disconnect the connector 11 2 4 SENSOR VC A SSY AND DAMPER UNIT 1 Separate INS Duct VCT and INS Duct VCB Peal off crepe tape separate INS Duct VCT and INS Duct VCB 2 Remove each parts The point of replacement of Damper Unit a Take Damper Unit out from INS Duct VCT and INS Duct VCB b Replace new one The point of replacement of Sensor VC a Take Damper Unit out from INS Duct VCT and INS Du...

Page 35: ...tor The connector can be taken out while pressing the hook NOTES The connector is classified by the colour Connect those connectors as before so as not to make mistake Be careful not to bite wires between Case SW A ssy and Center Crossrail when you install Case SW A ssy 11 4 Disassembly of FC Freezer Compartment 11 4 1 SENSOR FC 1 Take Cover Connector FC out a Remove the screw that is fixation of ...

Page 36: ... Bag Joint from storage position of upper side Cut Cable Tie of Bag Joint then take out wires and connectors from its inside d Peal off the tape which bundled wires Remove the connector of Sensor Defrost only press and pull then replace new good one NOTES ON INSTALLATION OF SENSOR DEFROST Install Sensor Defrost in Holder Def Sensor then install Holder Def Sensor in upper side of Accumulator as bef...

Page 37: ...before Tighten Bag Joint that is put in the connector of Temp Fuse A ssy with other connectors by Cable Tie as before Store Bag Joint to the place as before 3 DEFROST HEATER A SSY a Remove Defrost Heater A ssy forward from right and left side hooks that are fixation of Defrost Heater A ssy while pressing up hooks b Remove Heater Cover of upper side of Defrost Heater A ssy c Release hooks and peal ...

Page 38: ...FC A ssy in INS Cover Coil It might be cause vibration abnormal sound in case of imperfect instal lation of Fan Motor FC A ssy Tighten Bag Joint that is put in the connector of Fan Motor FC A ssy with other connector by Cable Tie as before Insert Cover Connector FC in the right of upper side of FC as before screw the screw that is fixation of it NOTES ON INSTALLATION OF COVER COIL FC A SSY Install...

Page 39: ...el when it is removed and installed It might become cause of defective opera tion 11 6 Disassembly of PCB Control 11 6 1 PCB Control 1 Disconnect the connectors and release a screw of right side of PCB Control Take the hooks off first and remove PCB Control CAUTION Be careful not to touch directly electric parts on the PCB Control when you remove and install PCB Con trol ...

Page 40: ... up NOTICE When you install Cover Panel Compressor set the holes of the six screws Adjust its position and tighten the six screws 2 Motor Protector a Insert a screwdriver into the gap between Protector Cover and Compressor like the figure Pry off Protector Cover in a screwdriver Remove Protector Cover b Take Motor Protector out from inside Protector Cover 3 Cluster Block a Pull Cluster Block out f...

Page 41: ...of Door A ssy PC Remove trays and shelves of reverse side of Door A ssy PC to prevent the trays and shelves from cracking and breaking When there is some foods on reverse side of the door it is necessary to take foods out When you do not take foods out the floor might be made dirty with the dropping foods 3 Unplug the refrigerator Unplug the refrigerator before work for your safety NOTICE After th...

Page 42: ...t are fixation of Hinge Center R b Remove Hinge Center R and Shim Hinge FCT c Remove Cap Hinge Pin FCT 2 Remove Door A ssy FC from Hinge Bottom R while lifting the door 3 Remove Hinge Bottom R Remove two screws that are fixation of Hinge Bottom R Remove Hinge Bottom R 11 8 3 Exchange Stopper Door Latch Door 1 Exchange Stopper Door Latch Door of Door A ssy FC a Turn the Door A ssy FC upside down fi...

Page 43: ...s of Hinge Bottom L are needed to screw by using a torque wrench 2 Install Door A ssy FC a Install Shim Hinge FCT that was removed before see 11 8 2 1 in the hole of upper and left side of Door A ssy FC b Install Cap Hinge Pin FCT in upper and right side of Door A ssy FC c 3 First open Door A ssy FC install Hinge Center L in the Refrigerator by screws for fixation Torque of screw 6 2 N m d Apply t...

Page 44: ...while pressing toward upper side e Store the connector in Cover Harness PCT install Cover Harness PCT in Door A ssy PC as before 2 Install Door A ssy PC a Apply the grease on around Pin Hinge Center b Lift Door A ssy PC and insert left bottom of Door A ssy PC into Hinge Center L 3 Install Hinge Top L a Through the connector to the hole of Hinge Top L CAUTION Be careful not to forcibly bend when th...

Page 45: ...ng the Door A ssy PC Three screws of Hinge Top L are screwed to use a torque wrench 4 Install Cover Hinge Top L a Connect the connector of Door A ssy PC fix the con nector into storage part CAUTION The wire harness is arranged not to touch Hinge Top L not to bend it b Open Door A ssy PC put Cover Hinge Top L on this side of the Hinge Top L c Insert hooks 2 portions of out side to under Hinge Top L...

Page 46: ...R into Door A ssy PC d Screw Cover Cap Door PCT R 11 8 6 Final check 1 Is there a gap between the body and the Door A ssy PC when the door is closed If there is a gap it might become cause of leakage of cooling air Check whether there is a gap to put a sheet of paper between the body and gasket like the figure 2 If Gasket Door does not slide smoothly check whether it is set to the right position I...

Page 47: ...after turn it on 6 Can you set a temperature by pressing any button When there is not any trouble above you install some trays and shelves in reverse side of Door A ssy PC as before NOTES Wipe a grease off with a new or cleaned cloth after Stopper Door R and Latch Door R are removed Stopper Door R and Latch Door R Hinge Top R etc that are removed are needed to return to the Door Setting Please kee...

Page 48: ...48 12 Maintenance ...

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Page 51: ...51 13 Dimensions 13 1 Outside ...

Page 52: ...52 13 2 Inside ...