Panasonic NR-B37MV2, Service Manual

Page 1: ...NOTICE WARNING 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 ser...

Page 2: ...y droping 5 Self Diagnoising Function 6 Temperature Control 7 Refrigerator Instruction Guideline 8 Troubleshooting Guide 8 1 Not cool at all Both PC FC compressor does not operate 8 2 Cool not enough Both PC FC compressor operates 9 Schematic Diagram 9 1 Wiring Connection Diagram 10 Parts Exploded View and Replacement Parts List 10 1 Part Exploded View Body 10 2 Part Exploded View Door 10 3 Part E...

Page 3: ...t for discharging capacitor Check safety after repairing Check the screws parts lead wires to take in place Check the repairing portion whether circumferential parts are damaged or not Check insulation resistance between supply plug and earth When install refrigerator check condition of supply cord and plug Wipe off the dust on plug Cutting and seal the electric device carefully 1 2 Caution Watch ...

Page 4: ...tor Fan Blade Type Rating Lamp Bulb PTC Relay Defrost Timer Defrost Heater Motor Protector Running Capacitor Defrost Sensor DFC Type Rating FC Sensor FCC Temperature Fuse Resistance wire vinyl covered heater 3 14W 220 3 22W M 15421 ohms D3D 121 250V 0 5A DC 14V 1 54W Ø 90mm prop fan Box Type E14 22 240V 15W PTH7M330MD2 Radiant heater MM6 4343 220V 183W MM3 20DCW 4µF 400V PTC 10 B 3819K 2 R 3 899KΩ...

Page 5: ... 2 5 3 5 2 5 6 5 2 5 21 5 2 5 19 5 2 5 15 0 2 5 4 5 2 5 6 0 2 5 8 0 2 5 5 0 2 5 75 15 85 15 1 4 60 15 3 2 NR B41MV2 Thermostat Dial Setting Mean Fresh Food Compartment Temperature t3 C C C C C C Mean Freezer Load Temperature Vegetable Crisper Temperature PC Door Shelf Upper Temperature Egg Tray Temperature PC Door Shelf Bottom Temperature Running Ratio kWh Day Power Consumption 3 2 1 1 0 2 5 4 0 2...

Page 6: ...ssor Normal operating 6 After restarting does Stop compressor occure 10 times within 2 min 5 IC cancels to stop compressor Normal operating 4 After 10 min does PCB check if IPM protect signal is normal 3 Does system protection cycle for 333 times 8 IC orders to stop compressor for 10 min 2 Does IC receive IPM protect signal 1 IC continues to stop compressor until 1 hour IC indicates Self Diagnosin...

Page 7: ...6 7 IC cancels to stop compressor Normal operating 5 After restarting does Stop compressor occure 10 times within 2 min 4 IC cancels to stop compressor after 10 min 3 Does system protection cycle for 333 times IC orders to stop compressor for 10 min 2 After starting 2 sec does IC detect rpm 5r sec After starting from 2 10 sec does PCB detect rpm over 120r sec 1 IC continues to stop compressor unti...

Page 8: ...op compressor Normal operating 4 After 10 min does PCB check power supply voltage if it is 180V AC 3 IC orders to stop compressor for 10 min 2 Does power supply voltage drop as condition 0 1 sec and 160V AC 1 IC continues to stop compressor until 1 hour IC indicates Self Diagnosing sign NO IC continues to stop compressor until 1 hour IC indicates Self Diagnosing sign NO Normal operating NR B37MV2 ...

Page 9: ...inking Abnormal of DFC thermistor Break Short of DFC thermistor None Turn on Abnormal of ATC thermistor Break Short of ATC thermistor Blinking Turn on Abnormal of defrost heater in FC Break Short of defrost heater Turn on None Abnormal of INV compressor Operate protector of IPM lock Operate protector of voltage dropping Operate protector of over voltage Turn on Blinking Abnormal of FC fan motor Br...

Page 10: ...VING operation When food storage is small or during nighttime and people out of home when door opening frequency is low the ENERGY SAVING operation saves electricity consumption by operating the compressor at a lower speed than the normal operation How to save energy Press the ENERGY SAVING button green light turns on Press the ENERGY SAVING button again to stop the operation green light turns off...

Page 11: ... refrigerator cabinet are helping to prevent Condensation on the outer surface of the cabinet without consuming energy This will make the outer wall of the refrigerator get warm and that is not a malfunction 9 Drinking water bottles beverage bottles such as soft drinks and fruit juices should be sealed closely to prevent odor gets into the bottles The refrigerator does not operate Before calling f...

Page 12: ... control PCB Defect PC door switch Defect of control PCB Communication error between IC1 IC201 Break wire of compressor Chock Leakage YES YES Does the Energy Saving turn off and Quick Freezing blink 6 NO Break FC thermistor Poor connection between FC thermistor and PCB YES Defect of control PCB Abnormal connecting of compressor Compressor lock Chock Leakage Droping voltage of power supply Rising v...

Page 13: ... YES YES YES NO 8 Does thermal fuse blow out Break of DFC thermistor Defect of PCB as like as defect of relay etc Defect of communication circuit and EEPROM circuit of control PCB Plug out and after few seconds plug in again Termal fuse blows Abnormal of spec of DFC thermistor When resistor of thermistor is bigger as like as 6 1 6 7KΩ at 0 C there is some case to blow thermal fuse out due to becom...

Page 14: ... BROW N 3 WHIT E 5 BLUE 7 BROW N 1 WHIT E 3 BLAC K 5 GR AY GR AY 3 BLACK 1 CON30 1 CON20 1 CON30 3 CON 1 CON 2 EART H CON30 2 BLACK 2 ORANGE PC DOOR SWITCH N C 3 N C 3 GREE N BROWN FCC DFC GR AY 4 6 8 10 12 1 3 5 7 9 11 13 15 17 19 21 23 1 3 5 7 C 2 C 2 9 11 13 15 17 19 21 23 25 27 29 31 32 33 16 18 20 14 20 22 24 PURPL E BROW N 16 18 PINK YELLOW WHITE FAN MOTOR FC DOO R SWITCH RE D M 2 4 6 8 10 1...

Page 15: ...LACEMENT PARTS LIST 10 1 Parts Exploded View Body NR B37MV2 NR B41MV2 1 2 3 5 6 7 6 8 4 9 10 11 12 10 16 17 14 15 13 18 19 20 22 23 24 25 28 30 33 32 26 35 29 31 21 27 37 38 39 45 46 47 48 40 41 42 43 44 49 50 34 36 26 1 82 83 84 85 86 ...

Page 16: ... 16 10 2 Parts Exploded View Door NR B37MV2 NR B41MV2 52 69 70 68 71 53 56 55 58 59 60 66 67 63 64 65 72 73 74 75 77 78 79 80 81 76 61 62 54 51 ...

Page 17: ... 17 10 3 Parts Exploded View Packing NR B37MV2 NR B41MV2 ...

Page 18: ...PROTECTOR COVER CNRAG 156851 1 1 44 PROTECTOR COVER CLAMP CNR01 245233 1 1 45 5 DRYER W CNR39 340920 1 1 Parts List Ref No 41MV2 NR B 37MV2 NR B Part name Part No Model Q ty CARTON BOX PAPER PROTECTOR FRONT BOTTOM TRAY AS PLASTIC COVER TOP PAD L TOP PAD R INSTRUCTION BOOK CNRAK 133930 CNRAK 133920 CNRAK 131910 CNRAK 133180 CNRBK 110050 CNRAJ 150380 CNRAK 132001 CNRAK 132011 CNRAK 133910 1 1 1 1 1 ...

Page 19: ...G NEW PAGE NO TO 3 18 SHOW THE CONTENT DETAIL 2 2 17 MOVE TEMPERATURE CONTROL REFRIGERATOR INSTRUCTION GUIDELINES SUBJECT TO PAGE 10 11 REVISE PART NAME NO OF COMPRESSOR 4 18 FOR CORRECT ITEM NO PAGE DETAIL REMARK REVISE PART NAME NO OF WATER PAN EVAP AS 3 18 FOR UPDATE NR B37MV2 NR B41MV2 ...