Panasonic NR-BX418XS User manual

© Panasonic Appliances (Thailand) Co., Ltd. 2016.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
IMPORTANT SAFETY NOTICE
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
Refrigerator
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.
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.
Destination
Thailand, Vietnam
Malaysia, Philippines
Hong Kong, Singapore, RBD
Indonesia, India, Australia/
New Zealand
Product Colour
White(VW)/(GW)
Shinning Silver(VS)
Stainless Colour(XS)
Black(GK)
NR-BX418XS, NR-BX418VS, NR-BX418GW
NR-BX468XS, NR-BX468VS, NR-BX468GW
NR-BX41BXS, NR-BX46BXS, NR-BX41BVW
NR-BX46BVW, NR-BX418GK, NR-BX468GK
Service Manual
Order No. PAPTH151201CE
Revision : Jun.2016
NR-BX418VNR-BX468X
NR-BX41B
NR-BX46B
NR-BX468G 
NR-BX468V
NR-BX41B
NR-BX46B
NR-BX418GK
NR-BX468GK

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
CONTENT
1. SAFETY CAUTIONS FOR REPAIRING 3
1.1 Warning
1.2 Cautions
2. SPECIFICATION AND COMPONENTS
2.1 NR-BX418VS, NR-BX418VW, NR-BX418XS, NR-BX418GW, NR-BX41BVN, NR-BX418BXS,
NR-BX418GK 4
2.2 NR-BX468VS, NR-BX468VW, NR-BX468XS, NR-BX468GW, NR-BK46BV, NR-BX468BX,
NR-BX468GK 5
3. PERFORMANCE DATA 6
3.1 NR-BX418XS, NR-BX46BXS, NR-BX418GW/GK (AT 32±1 °C) 6
3.2 NR-BX418VS, NR-BX418VW, NR-BX41BVW (AT 32±1 °C) 6
3.3 NR-BX468XS, NR-BX46BXS, NR-BX468GW/GK (AT 32±1 °C) 6
3.4 NR-BX468VS, NR-BX468VW (AT 32±1 °C) 6
4. DISPLAY SPECIFICATION 7
5. SELF PROTECTING FUNCTION 8
5.1 Protection for IC 8
5.2 Protection for compressor locked 9
5.3 Protection for power supply droping 10
6. SELF DIAGNOSING FUNCTION 11
7. TEMPERATURE CONTROL 12
7.1 TEMPERATURE CONTROL NR-BX418XS, NR-BW418GW/GK, NR-BX41BXXS, 12
NR-BX46BXS, NR-BX468GW/GK
7.2 TEMPERATURE CONTROL NR-BX418V, NR-BX468V, NR-BX41BVW, NR-BX46BVW 12
7.3 TEMPERATURE CONTROL (FINE ADJUSTMENT MODE) 13
8. OPERATION 14
8.1 QUICK FREEZING 14
8.2 ECONAVI OPERATION 14
9. REFRIGERATOR INSRUCTION GUIDELINE 15
10. TROUBLESHOOTING GUIDE 16
10.1 Not cool at all [ Both PC & FC (compressor does not operate) 16
10.2 Cool, not enough [ both PC & FC (compressor operate) ] 17-18
10.3 ECONAVI operation doesn't work (PC/FC/IC cooling condition is normal) 19
11. SCHEMATIC DIAGRAM 20
11.1 Wiring Diagram : NR-BX418XS, NR-BX468XS, NR-BX418GW, NR-BX468GW 20
NR-BX41BXS, NR-BX46BXS, NR-BX418GK, NR-BX468GK
11.2 Wiring Diagram : NR-BX418VS, NR-BX418VW, NR-BX468VS, NR-BX468VW 21
NR-BX41BVW, NR-BX46BVW
12. DISASSEMBLY INSTRUCTION 22
12.1 COVER LED LAMP / PAS-BW468(LED) 22
12.2 PAS-OPERATED CONTROL (DOOR) FOR G TYPE 23
12.3 PAS-OPERATED CONTROL (DOOR) FOR X TYPE 24
12.4 COVER DAMPER PC AS / FAN MOTOR 25
13. SERVICE INFORMATION 26
13.1 Dryer set (Kit) R600a 26
13.2 Insert the D-joint Pipe (Capilary tube into Dryer) 27
13.3 Notes of wire connected work (Scotch Lock) 28
14. PART LIST EXPLODED VIEW AND REPLACEMENT PARTS LIST 29
14.1 PART EXPLODED VIEW : BODY 29
14.2 PART EXPLODED VIEW : DOOR 30
14.3 PART EXPLODED VIEW : PACKING 31
14.4 REPLACEMENT PARTS LIST NR-BX418, NR-BX41B 32-34
14.5 REPLACEMENT PARTS LIST NR-BX468, NR-BX46B 35-37
DETAIL CHANGE NOTICE 37
Page
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
1. SAFETY CAUTIONS FOR REPAIRING
When you repair the refrigerator, please kindly take care for the following cautions.
1.1 WARNING
1.2 CAUTIONS
Before repairing unit, unplug supply cord
●Before you repair the refrigerator, please unplug the supply cord.
Use authentic parts when repairing
●When you replace the parts, please use authentic parts to replace defective parts.
Pay attention to using refrigerant
●If refrigerant touches fire, the gas becomes poisonous gas.
Pay attention to refrigerant
●Do not touch liquid refrigerant. Otherwise your hands may be burnt.
Pay attention to edge of parts
●Otherwise, your fingers may be cut.
Pay attention to fins of evaporator and condenser
●Otherwise, your fingers may be cut.
Before transportation, adjust the bolt
●Otherwise, the floor may be damaged.
Do not touch the pipe after brazing
●Otherwise, your hands may be burnt.
Caution during brazing
●When you use touch for brazing, please ensure ventilation.
Otherwise, you will be poisoned by carbon monoxide.
Pay attention to getting electricity shock
●When you check the voltage of terminal, please do not touch the electricity part terminal.
●When you replace the parts, please wait for 3 minutes at least for discharging capacitor.
Watch the hot parts
●During operation and after operation, compressor and pipes are hot.
●Also, under these condition, heater are hot.
●Do not burn your fingers when you touch it.
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.
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
2. SPECIFICATION AND COMPONENTS
2.1 NR-BX418VS, NR-BX418VW, NR-BX418XS, NR-BX418GW,
NR-BX41BVN, NR-BX418BXS, NR-BX418GK
Model NR-BX418VS NR-BX41B NR-BX418XS NR-BX418GW/GK
Destination Thailand Vietnam Indonesia RBD India Australia/New Zealand Vietnam Malaysia Philippines Hong Kong Australia Vietnam Singapore Malaysia Indonesia Hong Kong
Code Attached Model TH VN 1D WA X1 AU VN MY PH HK AU VN SG MY 1D HK
Plug C3P C2P C2P C2P B3P K3P C2P S3P A2P S3P K3P C2P S3P S3P C2P S3P
Power Source 220V/50Hz 220V/50Hz 220-240V/50Hz 220V/50Hz 230V/50Hz 240V/50Hz 220V/50Hz 240V/50Hz 230V/60Hz 220V/50Hz 240V/50Hz 220V/50Hz 230V/50Hz 240V/50Hz 220-240V/50Hz 220V/50Hz
2.1 Specification
Capacity
(Total Net Volume)
407L
(FC : 134L, PC : 273L)
Dimension
External
Width(mm) 685
Depth(mm) 689
Height(mm) 1624
Temperature Control FC Electronic control (PCB)
PC Electrical damper NSBD060AA1
Net Weight (Kg) 72 Kg
Defrosting Full-automatic heater defrost with PCB control
Exterior Finish (cabinet / door) PCM colour - Polyester paint coating / (Polyester painting steel / Painting glass )
Inner Liner Vacuum Formed ABS resin
Insulation Cyclopentane (cabinet and door)
2.2 Sealed Unit
Compressor ERI100E13DGH
Condenser Copper tube Type
Pressure
Reducing Device
Type Capillary Tube
I/D x Length Ø 0.77mm. X 3375mm.
2ND Pressure 0.622MPa
Evaporator Type Fin And Tube
Refrigerant Type R600a
Charge 70 ± 5g
Lubricating Oil Type Freol S - 10
Charge 215 ± 5ml
2.3 Electric Part
Door Switch Type D3D-121 (S.P. - S.T.)
Rating 250V / 0.5A
Fan Motor Type 11338JE09KBA
Rating DC 9V / 0.1A / 0.9W
Applied Fan Ø 110mm. prop fan (Box Type)
Light Irradiation
Device (PC)
Type LED Lamp PCB
Rating 12V / 100mA
Heating Device
For Defrosting
Type MM6-8V88
Rating 220V / 161W
Defrost Thermal Fuse Type Micro Temp.
Rating 250V / 10A / 73°C
Defrost Sensor (DFC) Type NTC
Rating B = 3819K ± 2%
R10 = 3.899KΏ± 3%
FC Sensor (FCC) Type NTC
Rating B = 3850K ± 2%
R-20 = 18.9KΏ± 1.8%
Ambient Temperature
Sensor (ATC)
Type NTC
Rating B = 3435K ± 1%
R25 = 10.0KΩ± 3%
Control Board
BX418V/BX41BVW PAS-CONTROL PCB ( V type )
BX418XS/BX468G PAS-CONTROL PCB ( X/G type )
Defrosting Control
(Electronic PCB Control)
(1)Ambient Temp. over 34°C 8h
(2)Ambient Temp. 23°C ~ 33°C 8h
(3)Ambient Temp. under 22°C 13h
(4)Power on 4h (Rated time)
Overload Protector MM3-20DCW
- 4 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
2.2 NR-BX468VS, NR-BX468VW, NR-BX468XS, NR-BX468GW,
NR-BK46BV, NR-BX468BX, NR-BX468GK
Model NR-BX468VS NR-BX46B NR-BX468XS NR-BX468GW/GK
Destination Thailand Vietnam Indonesia India Australia/New Zealand Thailand Vietnam Malaysia Singapore Philippines Hong Kong RB D Australia/New Zealand Thailand Vietnam Malaysia Hong Kong Singapore
Code Attached Model TH VN 1D X1 AU TH VN MY SG PH HK WA AU TH VN MY HK SG
Plug C3P C2P C2P B3P K3P C3P C2P S3P S3P A2P S3P C2P K3P C3P C2P S3P S3P S3P
Power Source 220V/50Hz 220V/50Hz 220-240V/50Hz 230V/50Hz 240V/50Hz 220V/50Hz 220V/50Hz 240V/50Hz 230V/50Hz 230V/50Hz 220V/50Hz 220V/50Hz 240V/50Hz 220V/50Hz 220V/50Hz 240V/50Hz 220V/50Hz 230V/50Hz
2.1 Specification
Capacity
(Total Net Volume)
450L
(FC : 134L, PC : 316L)
Dimension
External
Width(mm) 685
Depth(mm) 698
Height(mm) 1764
Temperature Control FC Electronic control (PCB)
PC Electrical damper NSBD060AA1
Net Weight (Kg) 74 Kg
Defrosting Full-automatic heater defrost with PCB control
Exterior Finish (cabinet / door) PCM colour - Polyester paint coating / (Polyester painting steel / Painting glass )
Inner Liner Vacuum Fomed ABS resin
Insulation Cyclopentane (cabinet and door)
2.2 Sealed Unit
Compressor ERI100E13DGH
Condenser Copper tube Type
Pressure
Reducing Device
Type Capillary Tube
I/D x Length Ø 0.77mm. X 3375mm.
2ND Pressure 0.622MPa
Evaporator Type Fin And Tube
Refrigerant Type R600a
Charge 70 ± 5g
Lubricating Oil Type Freol S - 10
Charge 215 ± 5ml
2.3 Electric Part
Door Switch Type D3D-121 (S.P. - S.T.)
Rating 250V / 0.5A
Fan Motor Type 11338JE09KBA
Rating DC 9V / 0.1A / 0.9W
Applied Fan Ø 110mm. prop fan (Box Type)
Light Irradiation
Device (PC)
Type LED Lamp PCB
Rating 12V / 100mA
Heating Device
For Defrosting
Type MM6-8V88
Rating 220V / 161W
Defrost Thermal Fuse Type Micro Temp.
Rating 250V / 10A / 73°C
Defrost Sensor (DFC) Type NTC
Rating B = 3819K ± 2%
R10 = 3.899KΏ± 3%
FC Sensor (FCC) Type NTC
Rating B = 3850K ± 2%
Ambient Temperature
Sensor (ATC)
Type NTC
Rating B = 3435K ± 1%
R25 = 10.0KΩ± 3%
Control Board
BX468V/BX46BVW PAS-CONTROL PCB ( V type )
BX468XS/BX468G PAS-CONTROL PCB ( X/G type )
Defrosting Control
(Electronic PCB Control)
(1)Ambient Temp. over 34°C 8h
(2)Ambient Temp. 23°C ~ 33°C 8h
(3)Ambient Temp. under 22°C 13h
(4)Power on 4h (Rated time)
Overload Protector MM3-20DCW
- 5 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
3. PERFORMANCE DATA
3.1 NR-BX418XS, NR-BX46BXS, NR-BX418GW/GK (AT 32 ± 1 °C)
3.2 NR-BX418VS, NR-BX418VW, NR-BX41BVW (AT 32 ± 1 °C)
3.3 NR-BX468XS, NR-BX46BXS, NR-BX468GW/GK (AT 32 ± 1 °C)
3.4 NR-BX468VS , NR-BX468VW (AT 32 ± 1 °C)
TEMPERATURE CONTROL COLDEST ( ECO - OFF ) ( ECO - ON ) WARMEST
MEDIUM
Mean Fresh Food Compartment Temp. t3 (°C) 1.0±2.5 3.0±2.5 4.5±2.5 6.0±2.5
Mean Freezer Load Temp. (°C) -22.0±2.5 -21.0±2.5 -19.5±2.5 -16.0±2.5
Vegetable Crisper Temp. (°C) - 3.5±2.5 4.5±2.5 -
PC Door Shelf Upper Tem. (°C) - 7.5±2.5 9.0±2.5 -
Egg Tray Temp. (°C) - 4.0±2.5 5.0±2.5 -
PC Door Shelf Bottom Temp. (°C) - 3.5±2.5 5.0±2.5 -
Chilled Case Temp. (°C) - -3.0±1.5 -3.0±2.5 -
Running Ratio (%) 65±15 60±15 60±15 50±15
TEMPERATURE CONTROL COLDEST ( ECO - OFF ) ( ECO - ON ) WARMEST
MEDIUM
Mean Fresh Food Compartment Temp. t3 (°C) 1.0±2.5 3.0±2.5 4.5±2.5 5.0±2.5
Mean Freezer Load Temp. (°C) -23.0±2.5 -21.0±2.5 -19.5±2.5 -16.0±2.5
Vegetable Crisper Temp. (°C) - 3.5±2.5 3.5±2.5 -
PC Door Shelf Upper Tem. (°C) - 7.5±2.5 7.5±2.5 -
Egg Tray Temp. (°C) - 4.0±2.5 4.0±2.5 -
PC Door Shelf Bottom Temp. (°C) - 3.5±2.5 3.5±2.5 -
Chilled Case Temp. (°C) - 1.0±1.5 1.0±2.5 -
Running Ratio (%) 65±15 60±15 60±15 50±15
TEMPERATURE CONTROL COLDEST ( ECO - OFF ) ( ECO - ON ) WARMEST
MEDIUM
Mean Fresh Food Compartment Temp. t3 (°C) 1.0±2.5 3.0±2.5 4.5±2.5 5.5±2.5
Mean Freezer Load Temp. (°C) -23.0±2.5 -21.0±2.5 -19.5±2.5 -16.0±2.5
Vegetable Crisper Temp. (°C) - 3.5±2.5 4.5±2.5 -
PC Door Shelf Upper Tem. (°C) - 4.0±2.5 5.5±2.5 -
Egg Tray Temp. (°C) - 3.0±2.5 5.0±2.5 -
PC Door Shelf Bottom Temp. (°C) - 4.0±2.5 5.0±2.5 -
PF Case Temp. (°C) - -3.0±1.5 -3.0±2.5 -
Running Ratio (%) 70±15 65±15 60±15 50±15
TEMPERATURE CONTROL COLDEST ( ECO - OFF ) ( ECO - ON ) WARMEST
MEDIUM
Mean Fresh Food Compartment Temp. t3 (°C) 1.0±2.5 3.0±2.5 4.5±2.5 5.5±2.5
Mean Freezer Load Temp. (°C) -22.5.0±2.5 -21.0±2.5 -19.5±2.5 -16.0±2.5
Vegetable Crisper Temp. (°C) - 3.5±2.5 4.5±2.5 -
PC Door Shelf Upper Temp. (°C) - 4.0±2.5 4.0±2.5 -
Egg Tray Temp. (°C) - 3.0±2.5 3.0±2.5 -
PC Door Shelf Bottom Temp. (°C) - 4.0±2.5 4.5±2.5 -
Chilled Case Temp. (°C) - 1.0±1.5 1.0±2.5 -
Running Ratio (%) 70±15 65±15 60±15 50±15
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
PROCESS INSPECTION DISPLAY
IN-PROCESS INSPECTION
START
CONDITION Operate the following control within 3 sec. , within 30 sec., after power-on
while PC door are open.
Push Door switch more than 3 time but not over 10 time
END
CONDITION 1. Push Door switch more than 3 time but not over 10 time
( Manual defrost )
2. After 4 hours ( Defrost start )
CONTENTS
FOR CONTROL COMP. : R5 (52 rps )
FC FAN : High speed
HEATER : Defrost heater off
LED : ECONAVI LED has only for model which have operation panel
BRINKING (ON_1sec/OFF_1sec )
MANUAL DEFROST Push Door switch more than 3 time but not over 10 time
AUTO DIAGNOSIS During IN-PROCESS INSPECTION
Indicate AUTO DIAGNOSIS in which case abnormal condition.JUDGEMENT
NOISE MODE For 45 sec., of the start of IN-PROCESS INSPECTION
COMP. : R5 (52 rps )CONTENTS
INSPECTION OF TEMP. For 30 min., of the start of IN-PROCESS INSPECTION
Normal or abnormality is displayed according to the range of drop of FCC
ALL FREEZER LED LIGHTING……….GOOD
ALL FREEZER LED BRINKING……….BAD
JUDGEMENT
INSPECTION OF
ILLUMINANCE SENSOR During IN-PROCESS INSPECTION
JUDGEMENT After 1 min., of the start of IN-PROCESS INSPECTION
Abnormality is judged according to variation width of input voltage of
illuminance sensor.
ECONAVI LED EXTINCTION………..GOOD
ECONAVI LED BRINKING……………..BAD
4. DISPLAY SPECIFICATION
NR-BX418VS, NR-BX41BVW, NR-BX418XS, NR-BW418GW/GK, NR-BX468XS,
NR-BX46BXS, NR-BX468GW/GK
ECONAVI
Quick freezing LED light
Fridge control button
Prime fresh control button
Freezer control button
- 7 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
5. SELF PROTECTING FUNCTION
5.1 Protection for IC
1
2
3
4
5
6
8
9
7
NO
NO
YES
YES
YES
YES
NO
Does IC receive IPM protect signal? • Normal operating.
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
IC orders to stop compressor for 10 min.
Does system protection cycle for 333 times?
IC order to stop compressor completely.
After 10 min., does PCB check if IPM protect
signal is normal?
IC cancels to stop compressor.signal is
Normal operating?
After restarting, does “Stop compressor”
occure 10 times within 2 min?
IC cancels to stop compressor.
Normal operating? After 1 hour.
SYSTEM PROTECT CONTROL CYCLE
1st time
SYSTEM PROTECT CONTROL CYCLE
333rd time
STOP COMPRESSOR
OPERATE each 7min X 10 times COMPRESSOR 1hour STOP OPERATE each 7min X 10 times
- 8 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
5.2 Protection for compressor locked
SYSTEM PROTECT CONTROL CYCLE
1st time
SYSTEM PROTECT CONTROL CYCLE
333rd time
STOP COMPRESSOR
1
2
3
4
5
7
8
6
YES
YES
YES
NO
NO
NO
• After starting 2 sec., does IC detect
rpm < 5r/sec.?
• After starting from 2-10 sec., does PCB
detect rpm over 120r/sec.?
IC orders to stop compressor for 10 min.
• Normal operating.
After 1 hour.
IC cancels to stop compressor after 10 min.
Does system protection cycle for 333 times?
IC order to stop compressor completely.
After restarting, does “Stop compressor”
occure 10 times within 2 min.?
IC cancels to stop compressor.
Normal operating?
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
OPERATE each 7min X 10 times COMPRESSOR 1hour STOP OPERATE each 7min X 10 times
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
5.3 Protection for power supply droping
1
2
3
4
5
67
NO
NO
YES
YES
YES
NODoes power supply voltage drop as condition
> 0.1 sec. and < 160V AC?
After 10 min., does PCB check power supply
voltage if it is > 180V AC?
IC cancels to stop compressor.
Normal operating?
After restarting, does “Stop compressor”
occure 10 times within 2 min?
IC cancels to stop compressor.
Normal operating?
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
IC orders to stop compressor for 10 min.
• Normal operating.
After 1 hour.
- 10 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
6. SELF DIAGNOSING FUNCTION
When abnormal is cased in the refrigeator, the sign is displayed on LED as below chart
How to use “ Self diagnosing “ function ( Door control model )
1. Opening PC door push “ Fridge button “ more then 5 sec.
2. After blinking sec., each LED show as below.
3. “ Self diagnosing “ function will be automatically cancel after 7 min., from start operation.
How to use “ Self diagnosing “ function ( Door control model )
1. Opening PC door and Door switch depressed push “ Fridge button “ more then 5 sec
( Initially , all LED will be on for 3 sec )
2. After blinking at see, each LED show as below.
3. “ Self diagnosing “ function will be automatically cancel after 7 min., from start operation.
No. Failure mode Corresponding diagnostic code
(diagnostic code will not be displayed)
Quick Freezing
LED
Control LED
Min. Mid. Max.
Detection of HC refrigerant leakage H36 ●●
(low-pressure leak)
Detection of HC refrigerant leakage H35
(high-pressure leak)
Disconnection or short circuit in ATC thermistor H07 (defect in ATC thermistor) ●
Disconnection or short circuit in DFC thermistor H05 (defect in DFC thermistor) ●
Disconnection or short circuit in FCC thermistor H01 (defect in FCC thermistor) ●
Disconnection or short circuit in PCC thermistor H02 (defect in PCC thermistor) ●●
Disconnection or short circuit in PFC thermistor H03 (defect in PFC thermistor) ● ●
Defect in FC defrost heater H31(defect in FC defrost heater) ●
Defect in INV comp.
H40 (IPM lock protection)
●● ● H41(undervoltage protection)
H52(overvoltage protection)
Defect in PCB H50 (communication error) ●
H51 (error in EEPROM)
Defect in illumination sensor H64 (defect in illumination sensor) ●●●
Normal -- ●●●●
[●] : Go out [●] : Light up [ ] : Flash (0.16s ON / 0.16s OFF)
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
7. TEMPERATURE CONTROL
7.2 TEMPERATURE NR-BX418V, NR-BX468V, NR-BX41BVW, NR-BX46BVW
7.1 TEMPERATURE CONTROL NR-BX418XS, NR-BW418GW/GK, NR-BX41BXXS,
NR-BX46BXS, NR-BX468GW/GK
“Fridge”
Lower than Med
by 2°C ~ 3°C
Approx. 1°C ~ 6°C
Higher than Med
by 2°C ~ 3°C
“Prime Fresh”
Lower than Med
by 2°C ~ 3°C
Approx. -5°C ~ -1°C
Higher than Med
by 2°C ~ 3°C
Approx. -1°C ~ 3°C
“Freezer”
Lower than Med
by 2°C ~ 3°C
Approx. -23°C ~ -17°C
Higher than Med
by 2°C ~ 3°C
The temperature can be
adjusted for Min - Max levels.
Press or or to
adjust temperature in Fridge,
Prime Fresh or Freezer room
respectively.
The temperature can be adjusted for Min-Max levels. Press to adjust temperature in Freezer room and press
to adjust temperature in Fridge Room.
Fridge Room temperature control
“Max” Lower than Med by 2°C ~ 3°C
“Med” Approx. 1°C ~ 6°C
“Min” Higher than Med by 2°C ~ 3°C
“Max” Lower than Med by 2°C ~ 3°C
“Med” Approx. -23°C ~ -17°C
“Min” Higher than Med by 2°C ~ 3°C
Freezer Room temperature control
Temperature in Chill case is automatically set at approximately -1°C ~3°C
Remark
While operating the refrigerator for the first time, after connecting the plug, adjust the temperature to "Med" position of
each control and leave it for 24 hours for the effective cooling operation. After that, adjust the temperature as you prefer.
If you want to save the energy, do not adjust the temperature lower than the actual operating condition.
“Max”
“Med”
“Min”
“Max”
“Med”
“Min”
“Max”
“Med”
“Min”
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
7.3 TEMPERATURE CONTROL (FINE ADJUSTMENT MODE)
This refrigerator is specially designed for appropriate use, which can adjust the temperature level to detailed 9 levels with
the following details.
How to operate the “9 levels” mode
For the Freezer room
1. Set LED display to “Min” with the “Freezer” button.
2. Press and hold the “Freezer” button (for a few seconds) until the LED display return to show at “Min” position.
3. Set “9 levels” mode following below table mentioned by pressing the “Freezer” button.
■LED Display table (Model: NR-BX418XS, NR-BW418GW/GK, NR-BX41BXS, NR-BX46BXS, NR-BX468GW/GK )
■LED Display table (Model: NR-BX418V, NR-BX468V, NR-BX41BVW, NR-BX46BVW)
For the Fridge room
Operate above 1 ~ 3 steps with pressing “Fridge” button instead of “Freezer” button.
To reset the setting “9 levels” mode
Repeat step 1 and 2, then the refrigerator return to normal operation mode.
Remark:
Temperature control varies depends on the changing of environment and food storage quantity.
Cooling Level
Step 123456789
LED DISPLAY
Cooling Level
Step 123456789
LED DISPLAY
Lighting
Lighting
Blinking
Blinking
Not lighting
Not lighting
Minimum Maximum
Minimum Maximum
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
8.2 ECONAVI OPERATION
Model : NR-BX418XS, NR-BW418GW/GK, NR-BX46BXS,
NR-BX46BXS, NR-BX468GW/GK
Detect opening and closing of door and brightness around refrigerator, and automatically controls operation to save energy1.
ECONAVI lamp is on during ECONAVI operation
Setting for enabling ECONAVI operation
●This refrigerator will learn the lifestyle patterns of your family
from opening and the time periods of infrequent use to
perform ECONAVI operation.
Remark :
●The refrigerator learns your lifestyle pattern from the
previous 3 weeks, and uses what it has learned from the
4thweek onwards. Therefore, the ECONAVI lamp "ON/
OFF” pattern may change from the 4th week onwards.
●The brightness of the lamp is lowered approximately 5 minutes after the lamp turns on.
ECONAVI lamp
Light intensity sensor
●ECONAVI operation is enabled automatically only when the temperature control of the freezer
compartment are set to “Med”.
(However, ECONAVI does not operate while quick freezing is operating.)
●It is not possible to forcefully start ECONAVI operation.
Remark :
1 Effectiveness differs depending on the ambient temperature, ambient brightness, number of times
and when doors are opened and closed, and state in which food is stored.
Model : NR-BX418V, NR-BX468V, NR-BX41BVW, NR-BX46BVW
This model also has ECONAVI mode, but it does not feature ECONAVI lamp and light intensity sensor.
8.1 QUICK FREEZING
8. OPERATION
How to operate the “Quick Freezing” mode
●Press the button “Freezer” until Blue light LED turns on. “Quick Freezing” mode starts
after 5 seconds.
●The system will stop operating automatically when it runs for 120 mins (as ambient temperature is below
25°C) or 150 mins (as ambient temperature is above 25°C) and return to normal mode (Blue light LED
turns off.)
●If you want to stop the operation immediately, press and hold the button “Freezer” until Blue light LED
turns off.
●Blue light LED flashing means that the defrosting system is now working "Quick Freezing" mode
will start right after the defrosting operation is finished.
●Freezer temp. control does not operate during “Quick Freezing” mode.
Remarks :
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
9. REFRIGERATOR INSTRUCTION GUIDELINE
1. Do not open the refrigerator frequently or leave it open for a long time. This is to prevent water dripping
inside the refrigerator which will cause the waste of coolness and consumpting of energy.
2. Do not refrigerate unnecessary items or hard-to-rot foodstuff such as pumpkin, shallot, garlic, potato as it
will make the refrigerator to work over load and waste the storage space without necessity.
3. Adjust the temperature according to the actual operating condition for energy saving.
4. Do not refrigerate the bottles bigger than the door shelf or the tray as the door will not close completely,
which will cause the leakage of coolness.
5. Frequently check the door opening seal, it must be closed to the refrigerator’s body completely. Do not
leave the seal dirty or damaged or deteriorated as the coolness will leak and will cause the consumption
of the energy without necessity.
6. If you will not be at home for several days or there are nothing refrigerated in the refrigerator, the plug
should be disconnected for energy saving. In this case, clean the refrigerator and leave it half-open to
prevent bad odor.
7. Clean the drain tray located over the compressor at the back of the refirgerator every 3 months to prevent
the odor generated from humidity.
8. Energy saving dryer pipes and heating pipes embedded around the 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.
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
10. TROUBLESHOOTING GUIDE
10.1 Not cool at all [ Both PC & FC (compressor does not operate) ]
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
1
2
3
4
5
6
8
7
Does room light turn on?
Pushing PC door switch and room light turns
off, and after release PC door switch, does
room light turn on?
• Check power supply.
Ex. Connect power cord in inlet
Ex. Check ELCB
• Defect of over load relay.
Ex. Does fuse blow?
• Check control PCB.
Ex. Does fuse blow?
Ex. Defect of IC, Diode, etc.
• Defect of control PCB.
• Abnormal connecting of compressor.
• Compressor lock.
• Chock.
• Leakage.
• Droping voltage of power supply.
• Rising voltage of power supply.
To start self diagnosing function by opening
PC door and FC door and pushing
“Quick Freezing” SW for 5 seconds.
Does “ECONAVI Led” and “Quick Freezing”
blink?
• Defect of control PCB.
• Defect PC door switch.
• Defect of control PCB.
• Communication error
• Break FC thermistor.
• Poor connection between FC thermistor and
PCB.
• Gas leakage at high pressure side.
• Poor compression.PCB.
• Defect of control PCB.
• Gas leakage at low pressure side.
• Defect of control PCB.
• Faulty compressor motor.
• Compressor lock.
Does the “ECONAVI Led” turn on and
“Quick Freezing” blinking?
Does the “ECONAVI Led” turn off and
“Quick Freezing” blink?
Does the “ECONAVI Led” turn off, “Quick
Freezing” turn off and “Freezer Control” LED
“MAX” blink?
Does the “ECONAVI Led” turn off, “Quick
Freezing” turn off and “Freezer Control” LED
“MIN” blink?
- 16 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
10.2 Cool, not enough [ Both PC & FC (compressor operates) ]
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
When FC door opens and FC door
SW pushes, does cold air spout out
from exhaust?
• Defect of FC fan motor.
• Poor connection between FC fan
motor and IC 1 on PCB.
• Defect of FC door SW.
• Break of FCC thermistor.
• Poor connection between FCC
thermistor and IC 1 on PCB.
• Abnormal of spec of DFC thermistor.
* Resistor of thermistor is bigger as like
as 5.9 - 6.5 K at 0°C
• Termal fuse blows.
• Abnormal of spec of DFC thermistor.
* When resistor of thermistor is bigger
as like as 6.1 - 6.7K at 0°C, there is
some case to blow thermal fuse out
due to becoming defrost time longer.
• Defect of damper.
• Defect of PC door SW.
• Defect of FC fan motor.
• Poor connection between FC fan motor
and IC 1 on PCB.
• Short of DFC thermistor.
• Poor connection between DFC
thermistor and IC 1 on PCB.
• Defect of communication circuit and
EEPROM circuit of control PCB.
• Plug out and after 7 minute plug in
again.
• Break of DFC thermistor.
• Poor connection between FFC
thermistor and IC 1 on PCB.
• Break of DFC thermistor.
• Defect of PCB as like as defect of relay,
etc.
When PC door opens and PC door
SW pushes, does cold air spout out
from exhaust?
To start self diagnosing function by
opening PC door and FC door and
pushing “Quick Freezing” SW for 5
seconds.
Does “ECONAVI Led” and “Quick
Freezing” turn on?
Does “ECONAVI Led” turn off and
“Quick Freezing” blinking?
Does “ECONAVI Led” turn off and
“Quick Freezing” turn on?
Does thermal
fuse blow
out?
Does thermal
fuse blow
out?
Does “ECONAVI Led” turn off and
“Quick Freezing” turn off?
Does “ECONAVI Led” and “Quick
Freezing” blink?
To confirm when compressor is operating.
1
2
3
4
4
56
8
9
7
- 17 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
To confirm when compressor is operating.
YES
YES
YES
NO
NO
NO
Does frost adhere to evaporator
much?
• Gap of door.
• Defect of control PCB.
• Gas leakage at low pressure side.
• Defect of control PCB.
• Gas leakage at high pressure side.
• Poor compression.
• Defect of control PCB.
Does the “ECONAVI Led” turn off,
“Quick Freezing” turn off and
“Freezer Control” LED “MAX”
blinking?
Does the “ECONAVI Led” turn off,
“Quick Freezing” turn off and
“Freezer Control” LED “MIN”
blinking?
- 18 -

NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
Is the temperature control set to
{ 2 (Middle) } for FC?
Does “Quick Freezing” function
operating?
Is the FC temperature -17°C or below?
• FC set to { 2 (Middle) }
• Faulty operation panel PCB.
• Some LED indicator is displayed on
the notice indicator area, ECONAVI will
not operate.
• The internal temperature is high,
ECONAVI will not operate.
• Quick Freezing is operating, ECONAVI
will not operate.
• Faulty control PCB.
• Faulty operation panel PCB.
Press “Freezer” button 5 seconds.
It is normal (keep a wait and see)
Does “Freezer Control” LED turn on
MAX blink?
Does LED indicate “ECONAVI Led” or
“Quick Freezing” or “Freezer Control”
LED lighting and blinking?
10.3 ECONAVI operation doesn’t work
(PC/FC/IC cooling condition is normal)
1
2
3
4
5
6
7
YES
YES
YES
YES
YES
Unlit (ECONAVI)
Turn off setting
YES
NO
NO
NO
NO
If it meets the above condition, ECONAVI operation begins and the lamp lights when the door opening and closing
is not done for 3 hours. (with some exceptions)
White in service mode, shield the sensing part of ECONAVI sensor from the light.
Keep 1 minute without door opening and closing to turn on the { ECONAVI } lamp.
Precondition : The refrigerator compartment and freezer compartment are set to { 2 (Middle) }.
Test of ECONAVI operation. (Quickly confirms for turning on the { ECONAVI } lamp)
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NR-BX418/NR-BX468/NR-BX41B/NR-BX46B
11. SCHEMATIC DIAGRAM
11.1 WIRING DIAGRAM : NR-BX418XS, NR-BX468XS / NR-BX418GW, NR-BX468GW
NR-BX41BXS, NR-BX46BXS, NR-BX418GK, NR-BX468GK
:,1',1*5(6,67$1&(9$/8(
8 :
8 9
: 9
- 20 -