Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator Instruction Manual

June 4, 2024
Panasonic

Table of Contents

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator

WARNING

This sign means: It may lead to a serious injury or death.

These signs mean prohibited action. This sign means required action. This sign means the appliance must be earthed to prevent electric shock.

CAUTION

This sign means: It may result in injury or property damage.

WARNING

For power plug and cord

  • Do not plug or unplug with wet hands.
  • Do not let the cord or plug be damaged.
  • Disconnect power plug when cleaning.
  • Plug into a wall outlet of the rated voltage on its own with the rated current and insert plug fully.
  • Reserve one socket for the refrigerator only.
  • Avoid connecting many appliances to the same socket and unroll through the length of cord.
  • Remove dust periodically from the power plug.
  • If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
  • If you detect burning smell, disconnect the power plug and ventilate the kitchen.
  • Stop using the refrigerator and unplug the unit immediately if there is an abnormality or failure.
  • Abnormality and failure examples:
  • Power cord or plug is abnormally hot.
  • Power cord is deeply cut or deformed.
  • There is burning smell.
  • You can feel tingling electricity.

When recycling the product

  • Before taking the refrigerator to be recycled, please remove all the door opening seal to prevent locking a child in it.
  • The warning labels mentioned above should be kept throughout the life of the refrigerator.
  • The operating instructions should be handed over to any person who would use or handle the refrigerator whenever the refrigerator would be transferred to another location and delivered to a recycling plant.
  • Regarding to local laws, Cyclo-Pentane is used for insulation of this refrigerator.
  • When you throw away this unit, please discard it by proper method and do not dispose it by burning.

When using

  • Do not damage the cooling circuit (piping on the back).
  • Do not touch the compressor and pipes, because of high temperature, that there is a risk of burn injury.
  • Do not let any children hang onto the refrigerator’s door, it may overturn to the kid.
  • Do not place any water container on the top of the refrigerator in case the spilling water causes electrical shock or combustion.
  • Do not locate multiple portable socket-outlets or portable supplies at the rear of the appliance.
  • Keep ventilation openings, in the appliance enclosure or in the built-in structure, clear of obstruction.
  • This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
  • Children should be supervised to ensure that they do not play with the appliance.

In case of emergency

  • Maintenance work only be carried out at workshop by well-trained maintenance worker.
  • Do not store explosive substances such as aerosol cans with a flammable propellant and chemicals or scientific specimens in the appliance.
  • Do not use electrical appliances such as a deodorizer in the refrigerator.
  • Leaked refrigerant may catch fire from a spark of the electrical contacts and may cause an explosion.
  • Do not use electrical appliances inside the food storage compartments of the appliance, unless they are of the type recommended by the manufacturer.
  • Do not disassemble, repair or modify the refrigerator by yourself.
  • If you want to repair the refrigerator, please consult your dealer or authorized service center.
  • Do not use mechanical device or other means to accelerate the defrosting process, other than those recommended by the manufacturer.

When installing

  • Fix the refrigerator to avoid danger due to unbalance.
  • When positioning the appliance, ensure the supply cord is not trapped or damaged.
  • Ensure that the refrigerator is plugged into an earthed mains socket.

When opening/closing the doors

While opening the refrigerator, be careful not to pinch other one’s hand holding the door.  Mind the gap between the doors. They may nip your hand while closing the door.

When storing food

Do not freeze glass bottles, that there is a risk of injury. If the liquid in a glass bottle is frozen, then the bottle may break and you may be injured. Do not add a high impact on glass trays. Otherwise those glass trays may break and you may be injured.

When moving the refrigerator

Hold the refrigerator tightly when transporting. Apply protective covering, etc. to floors with a fragile surface.

Usage precautions

When opening/closing the doors
  • Do not refrigerate items which are bigger than tray or shelf, as the door will not close completely causing leakage of cool air.
  • Do not open refrigerator frequently or leave it open for long time in order to prevent water dripping inside and waste energy.
  • Frequently check the door opening seal, it must be closed to the refrigerator’s body completely.
When cleaning

Do not clean the refrigerator with chemical substance or liquid. It will cause damage and have corrosion on the surface. Clean the pan water evap located over the compressor at the back of the refrigerator every three months to prevent the odor generated from humidity.

When using

When the plug is disconnected, leave it for 5 minutes before plugging again. If not, the compressor may not work. Adjust the temperature according to the actual operating
condition for energy saving. The humidity inside the fresh case may condense so wipe it with a cloth periodically. Clean the fresh case once a month. If you will not be at home for several days and there are nothing refrigerated in the refrigerator, the plug should be disconnected for energy saving.  The outside wall of refrigerator cabinet may sometimes get warm, especially just after installation. This is quite normal, and is due to the built-in Mullion Dryer Pipe which prevents sweating and radiates heat.  When humidity is high, e.g. during rainy-season, condensation may appear on the surface of cabinet, especially around the door seal gasket. Wipe off the condensed water with a clean cloth.  Do not keep the door open any longer than necessary, particularly in hot, humid weather.

When storing food

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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  • Do not place warm/hot foodstuff in the refrigerator.
  • Do not overload the refrigerator.
  • Gap must be provided between foodstuffs to maintain the cooling effect.
  • Store fruits and vegetables in vegetable case, where trapped moisture helps preserve food quality for longer time periods.
  • Drinking water, beverage bottles should be sealed to prevent odor contamination.
  • Foodstuff such as vegetables, fruits and fresh food should be wrapped or packed in box before freezing and refrigerating.
  • Put the food such as meat or fish in the freezer if you want to store for an extended period.
  • Cover juicy food with tight lids, plastic film or foil.
  • Cool hot dishes in room temperature before placing them in your refrigerator.

SPECIAL FEATURE

ECONAVI

The microchip performing ECONAVI mode is integrated into the main control board. By detecting refrigerator’s frequency of use (opening and closing of door), ECONAVI mode automatically operates to save energy.

INVERTER

In accordance with temperature change inside the compartment, the motor of compressor runs at different speed. When the temperature is stable, the motor runs at a lower speed (energy saving & lower noise). When powerful cooling is required, the motor runs at a higher speed.

Installation

The distance requested for installation
  • The top of the refrigerator and the ceiling at least 1 cm.
  • The back of the refrigerator and the wall at least 5 cm.
  • The sides of the refrigerator and the walls at least 3 cm.
Area around the installed unit
  • Do not locate the refrigerator in a humid place as rust may form and may cause electric leakage.
  • Do not locate the refrigerator exposing to direct sunlight as the heat and sunlight will increase the temperature.
  • Do not locate the refrigerator near heat source such as cooking stove or oven.
  • Do not block the openings around the refrigerator.
  • The refrigerator must be located in the place where there is good air circulation.
  • In case of placing the refrigerator on an uneven surface, adjust the adjustable bolt to make the refrigerator stand stably.
  • In order to prevent the refrigerator from tipping due to earthquakes, permanently fix it by using belts, etc.
Moving or shifting

When moving or shifting the refrigerator, remove ice maker, freezer case, pan water evap, etc. and check to be sure that there is no water in the refrigerator.

Power cord setting

To bring power cord for use, pan water evap from left should be lifted up. Then bring the power cord out and then insert pan water evap into the block by pressing at both the sides.

LED lamp and grounding

The refrigerator LED lamp, specially designed for this refrigerator, do not replace it by yourself. If you need replacement, please contact Panasonic Service Center. If there is no grounding wiring plug in refrigerator, it should be connected with grounding connection to prevent electrical hazard from electric leakage.

Parts Identification

NR-BX421W / NR-BX421B

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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FRIDGE ROOM PRIME FRESH ROOM (LED Blue AG) FREEZER ROOM
  1. LED lamp
  2. PC Glass tray
  3. Glass tray crisper
  4. Vegetable case
  5. Prime Fresh case
  6. Egg shelf
  7. Egg tray
  8. Bottle shelf
  9. Gasket PC
  10. Gasket FC
  11. Ice twister
  12. ce box
  13. Freezer case
  14. Adjustable bolt
  15. Pan water evap
  16. Compressor
Inside Control Panel NR-BX421B

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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Door Control Panel

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
14 In model NR-BX421B, there is no LED Blue AG

Water Dispenser
Product view from behind

Temperature control

Temperature setting and a guide of temperature

Model : NR-BX471G / NR-BX421W Door Control Panel

  • The temperature can be adjusted for Min-Max levels.
  • Touch the Fridge button to adjust temperature in Fridge room.
  • Touch the Prime Fresh button to adjust temperature in Prime Fresh room.
  • Touch the Freezer button to adjust temperature in Freezer room.

Button

Temperature setting

| Fridge room| **Prime Fresh room| Freezer**

room

---|---|---|---

Max

| Lower than Med by approx.

2 °C ~ 3 °C

| Lower than “Med” by approx.

2 °C ~ 3 °C

| Lower than “Med” by approx.

2 °C ~ 3 °C

Med

| Approximately 1 °C ~ 7 °C| Approximately

-5 °C ~ -1 °C

| Approximately

-23 °C ~ -17 °C

Min

| Higher than Med by approx.

2 °C ~ 3 °C

| Higher than Med by approx.

2 °C ~ 3 °C

| Higher than Med by approx.

2 °C ~ 3 °C

Model  NR-BX421B / NR-BX421G (Inside Control Panel)

  • Press the Zone Select button to select Fridge room , Prime Fresh room , or  Freezer room
  • Press the Temp. Select button to select Max, Med, or Min levels.

Area

Temperature setting

|

Fridge room

|

Prime Fresh room

|

Freezer room

---|---|---|---

Max

| Lower than Med by approx.

2 °C ~ 3 °C

| Lower than Med by approx.

2 °C ~ 3 °C

| Lower than Med by approx.

2 °C ~ 3 °C

Med

| Approximately 1 °C ~ 7 °C| Approximately

-5 °C ~ -1 °C

| Approximately

-23 °C ~ -17 °C

Min

| Higher than Med by approx.

2 °C ~ 3 °C

| Higher than Med by approx.

2 °C ~ 3 °C

| Higher than Med by approx.

2 °C ~ 3 °C

Generally, use the refrigerator with the temperature set to Med. If the temperature control of the Freezer room or Fridge room is set to other than Med ECONAVI does not operate.

Temperature control

How to operate the 9 levels mode

The refrigerator is specially designed for appropriate use, which can adjust the temperature level to detailed 9 levels with the following details.

Model  NR-BX471G / NR-BX421W (Door Control Panel)

To adjust the temperature for the Fridge room

  • Set the LED display to the Min position by touching the Fridge button.
  • Touch and hold the [Fridge] button for 10 seconds until the LED display returns to show at the Min position.
  • Use the  Fridge button to set the required temperature mode, where level 1 is the minimum cooling mode and level 9 is the maximum cooling mode. (As specified in the
  • LED Display table.
  • To adjust the temperature for the Freezer room Follow steps 1 ~ 3 above, but select Freezer room [Freezer] instead of Fridge room [Fridge].
 NR-BX421B / NR-BX421G (Inside Control Panel)

To adjust the temperature for the Fridge room

  • Set the LED display to “Min” position by pressing the Zone Select button to select A (Fridge Room) then press the [Temp. Select] button to select “Min”.
  • Press and hold the [Temp. Select] button for approximately 10 seconds until the LED  display returns to the “Min” position.
  • Use the [Temp. Select] button to set the required temperature mode, where level 1 is the minimum cooling mode and level 9 is the maximum cooling mode. (As specified in the LED Display table.
  • To adjust the temperature for the Freezer room.
  • Follow steps 1 ~ 3 above respectively while pressing the Zone Select button and selecting C Freezer room instead of A Fridge room.
LED Display table (Model : NR-BX471G / NR-BX421W)

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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LED Display table (Model : NR-BX421B / NR-BX421G)

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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Temperature control

To reset the setting 9 levels mode Repeat steps 1 and 2, then the refrigerator returns to normal operation mode.

Remark
Prime Fresh room does not have 9 levels mode.  The temperature control can vary depending on the environment and amount of food stored in the refrigerator.

ECONAVI Operation

Model : NR-BX471G / NR-BX421W

The refrigerator detects the opening and closing of the refrigerator door and the brightness around the refrigerator to control operations automatically to ensure maximum energy saving. The refrigerator learns the lifestyle patterns of your family from door opening and time periods of infrequent use to maximize energy efficiency. The refrigerator learns your lifestyle patterns from the previous 3 weeks of use and uses that data from the 4th week onwards. Therefore the ECONAVI lamp ON/OFF pattern may change from the 4th week onwards. The refrigerator performs the ECONAVI energy saving operation when it becomes dark*2 around the refrigerator such as overnight when you are asleep. The brightness of the ECONAVI lamp is lowered approximately 5 minutes after the lamp turns on.

Settings for enabling ECONAVI operation

  • ECONAVI operation is automatically enabled when the temperature control for both the freezer and refrigerator compartment is set to Med.
  • ECONAVI mode does not operate if the Quick Freezing or Prime Fresh+ mode is in operation.
  • It is not possible to force to start of the ECONAVI mode.

Remark
The effectiveness of the ECONAVI mode is dependant on the ambient temperature, ambient brightness and the number of times the refrigerator door is opened and closed and the state in which food is stored. Darkness is detected by the light intensity sensor at approximately 3 lx to 10 lx or less.

NR-BX421B / NR-BX421G

This model also has ECONAVI mode, but it does not feature ECONAVI lamp and light intensity sensor.

Quick Freezing

When Quick Freezing is set, the refrigerator will reduce the temperature quickly for better performance of preserving food.

How to operate the Quick Freezing mode

Model : NR-BX471G / NR-BX421W
Touch the button Freezer until the light LED [Quick Freezing] turns on. Quick Freezing mode starts after about 10 seconds. If you want to stop the Quick Freezing operation immediately, please touch the button [Freezer] until the light LED [Quick Freezing] turns off.

Remark
The Quick Freezing operation will automatically stop after 60 mins (as ambient temperature is 18°C or lower) or 150 mins (as ambient temperature is 19°C or higher and return to normal mode. The light LED Quick Freezing] turns off. The light LED [Quick Freezing] flashing means that the defrosting system is now working. The Quick Freezing mode will start right after the defrosting operation is finished. Freezer temperature control will not operate during Quick Freezing mode as the compressor is already at maximum operating levels for the Quick Freezing mode.

Prime Fresh+

How to operate the Prime Fresh+ mode

Touch the button [Prime Fresh] until the light LED [Prime Fresh+] turns on. If you want to stop the “Prime Fresh+” operation immediately, please touch the button [Prime Fresh] until the light LED [Prime Fresh+] turns off. Press the button [Zone Select] until the light [Prime Fresh] turns on, then press the button [Temp. Select] until the light LED [Prime Fresh+] turns on.  If you want to stop the Prime Fresh+ operation immediately, please press the button [Zone Select] until the light [Prime Fresh] turns on, then press the button [Temp. Select] until the light LED [Prime Fresh+] turns off.

Remark
The system will stop the Prime Fresh+ operation automatically when it runs for 105 mins (as ambient temperature is 18°C or lower) or 145~150 mins as ambient temperature is 19°C or higher and return to normal mode. The light LED [Prime Fresh+] turns off.  The light LED [Prime Fresh+] flashing means that the defrosting system is now working. The Prime Fresh+ mode will start right after the defrosting operation is finished. When Prime Fresh+ mode is active, if you set the Quick Freezing mode, the Prime Fresh+ mode will stop and fridge activates Quick Freezing mode and vice versa.

Prime Fresh room

This room is suitable for storing fresh food such as meat or fish. Compared to storing in the Fridge room, the storage life of meat or fish becomes longer. This room is suitable for storing fresh food such as meat or fish. Compared to storing in the Fridge room, the storage life of meat or fish becomes longer.

Easy to cut

The partially frozen food is easy to cut. It comes in handy.

Fridge room

The position of the second tray from the top can be changed

Lift up the back of the tray and pull it forward. Once the protrusions of the tray are unhooked from rails, tilt the tray and remove it.

Insert the tray in the desired position by reversing the steps.

Glass shelves are heavy. Please handle them with care so that they do not fall and cause any damage or injury.

How to use the Water Dispenser (Model : NR-BX471G / W421G)

With the water dispenser, you can get cold water from outside without opening the fridge.

Method of getting water from outside

Slide the child lock to the UNLOCK position. Keep the cup straight and gently push the lever to get water.

Attention

  • After getting water, gradually remove the cup to prevent water from running.
  • Use clean cloth to dry spilling water if any.
  • Slide child lock to the LOCK position to avoid accidentally touching it, causing water to run out.
Method of using the water tank

Open the cap and fill it with water for use. Close the cap and close the refrigerator door.

Attention

  • For the first time use, should clean the water tank first.
  • Only pour drinking water to the water tank, do not use beer, soft drink, juices, carbonated drinks.
  • The tank can contain no more than 3 liters of water.
  • Do not pour water above the 3L bar in the tank.
  • Do not pour hot water above 50°C to the tank.
  • Ensure that the tray is always installed in the right position when the fridge is in use.
  • Otherwise it will affect the cooling efficiency and cause sweating in the fridge door.
  • Check the water tank before use.
  • Hardness of water must be 100 mg/L or less.
  • The minerals may appear as white floating particles.
  • They are not harmful.
  • Water container should be filled from drinkable tap water.
  • This product is not designed to replace a water treatment system.
  • Not suitable for untreated rainwater tanks.

Freezer room

A lot of frozen food and cooked meal can be stored. Three tips for freezing food and locking in the flavor.

  1. Freeze thin and small items of food quickly
  2. Fully sealed
  3. Do not refreeze

To make ice

Take out the ice twister

Pull out the ice twister.

Fill with water

Fill water up to the WATER LEVEL line.

Install the ice twister

Place tray back into the ice making room.

To move ice cubes

Twist the ice twister clockwise. The ice cubes will drop into the ice box.

Usage tips

Where to store these different foodstuffs?

Fridge room 1°C~7°C

Processed food and drinks. For regular storage of food and drinks or temporary storage of those to be served soon.

Vegetable case  3°C~8°C

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
32 Fruits and vegetables
A rather high humidity keeps fruits and vegetables fresh and juicy.

Prime Fresh room

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
33 Fresh food
For storage of meat, fish, processed foods such as hams and sausages for 1 week with soft freezing.

Freezer room Dried or frozen foods

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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For storage of food for an extended period.

Storage using hermetically sealed containers is recommended

To prevent the interior from being discolored. To prevent odors from spreading. Cut citrus fruits. The plastic will be discolored white. Garlicky or other strong smelling vegetables

How to clean the refrigerator

Before cleaning or conducting maintenance, be absolutely sure to disconnect the power plug from the power outlet. Do not connect or disconnect the power plug with wet hands. When the plug is disconnected, leave it for 5 minutes before plugging again. If not, the compressor may not work.

Clean the refrigerator immediately after it is stained

Wipe off stains on the interior surfaces quickly before they harden. In particular, cooking oil or lard may cause plastic to crack and citrus juice may cause the refrigerator to become discolored. When stains cannot be removed easily, wipe them with a cloth lightly soaked in neutral kitchen detergent. Then, wipe with a cloth lightly dipped in water.

Clean the detachable items occasionally

Once a week for the ice twister. As a guide, remove the trays, door shelves, etc. and wash them by immersing them in lukewarm water every three months.

Clean the door gasket at least once a month

Clean by wiping with a soft damp cloth. Petroleum gel has been applied to the door gasket on the hinge side of the unit, be careful not to wipe this off.

Notices

The door gasket is replaceable by an authorized service agent. If the door gasket comes off while cleaning, it can be pushed back into the groove.

Requests

Do not use the following items for cleaning. (Otherwise, the surface will be scratched or corroded.

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
38Kitchen detergents. They crack plastic. Cleanser or soap powder Benzine, thinner, alcohol, acid, petroleum Scrubber

Hot Water

How to clean the refrigerator

Trays

Removing
Lift up the back of the tray and pull it forward. Once the protrusions of the tray are unhooked from the rails, tilt the tray and remove it.

Panasonic NR-BX421W 2 Door Bottom Freezer Refrigerator
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Attaching
Push the tray until it reached the end.

Remark

  • When removing the tray above the vegetable case, please pull out the vegetable case first and then follow to removing the tray as above details.
  • In case of attaching the tray and it does not lock, make sure that you did not attach it the wrong tray.
  • Trays are made of glass and heavy.
  • Please handle them with care so that they do not fall and cause any damage or injury. For attaching trays, hold them with the protrusion side down and firmly insert.

Egg shelf/Bottle shelf

Removing

Lift it upward, alternating between the right and left side.

Attaching

Placing it on both supporters, and then press until it reaches the end of supporters.

Vegetable case/Prime Fresh case

Removing
  • Pull the case unit forward until it reaches the end of the stopper.
  • Lift the front of the case unit slightly and  remove completely.
Attaching

Insert the case unit into the supports. 2 Raise the case unit up slightly and push forward until the end is reached.

ICE TWISTER Quick Ice Making corner

Removing

Unhook the protrusion by lifting it upward and pulling the ice twister and ice box forward until completely removed.

Attaching

Push the ice twister and ice box until it reaches the end lock. You can disassemble the ice twister and ice box to increase space in the freezer.

Water Tank Model NR-BX471G / NR-BX421G

Removing

Pull the water tank up using both hands and slightly tilt it towards yourself.

Attaching

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Attention

When removing the water tank for cleaning, if the rubber gasket is reverse due to friction with the faucet, just use your hand to push the gasket reversely to its original position. The valve at the water tank can be removed by rotating counterclockwise.

 Hygiene Filter Replacement

  1. Open the lid at the right corner using a hand.
  2. Replace with a new hygiene filter. Put it back to the same position and close the lid tightly.

Attention
The hygiene filter should be replaced every 3 years or as appropriate. The hygiene filter can be purchased at all authorized service center.

Hygiene filter set
Hygiene filter

Troubleshooting

Before you call for service, please check the following items

The refrigerator does not operate

  • Check that the plug and its socket are in good condition.
  • Check if there is any problem on main fuse and electrical system of the house.
  • Check by unplug and wait for 5 minutes before plugging it back in.

The refrigerator does not cool enough

  • Check to be sure that light in control panel is displayed at proper position.
  • Check to see if the refrigerator is overloaded with stuff or there is any hot foodstuff refrigerated inside.
  • Is the refrigerator exposed directly to sunlight or heat source?
  • Is the refrigerator door completely closed?
  • Is the refrigerator door opened frequently?

Dew, snow appear Outside and Inside
When the ambient humidity is too high, the door gasket may have dew. This situation will be stopped if the air humidity decreases. Please wipe it up with dry cloth. Is the door closed firmly?

The refrigerator generates noise

  • Check if the refrigerator is located on a stable floor or is installed properly.
  • Check if there is any object in contact with the refrigerator.
  • Cracking sound within caused by the parts adjusting temperature which is normal.
  • After installation, the refrigerator may make loud noise.
  • The noise will be less when the refrigerator has been cooled.
  • There may be a whistling sound inside the refrigerator when opening and closing the door.
  • This is caused by the air outside being drawn in through the pipe on the backside of the refrigerator to better balance the air circulation inside the unit.
  • Check if evap pipe in contact with pan water evap.

Food becomes frozen
Do you put the food near cold air holes? Do you adjust the temperature control at Max? Adjust to Min? The inside is smelling. The surfaces of the refrigerator is hot you put food in prime fresh room? Do you store the odour food without wrapping it? Because the refrigerator is equipped with the dew prevention and heat radiation tubes, the surfaces of the refrigerator get warmer when operating.  The back and side plates may get warmer especially when starting up or if the door is frequently opened and closed.

The normal sounds of refrigerator
When the refrigerator starts operation, the sound like water flowing and boiling water is created. This is the sound of the cooling liquid. The noise is generated when the automatic defrost system is operating.  The dilatation of the details inside the refrigerator in the cooling process can cause sound crack-crack. You may feel that the operation sound is larger because the compressor operates at high speed under the following conditions: the refrigerator does not cool fully on the occasion such as using it for the first time, opening/closing the door too frequently, the surrounding temperature is high. The sound becomes more quiet after cooling fully.

Lamp does not turn on
Please contact Panasonic service center

ECONAVI does not  operate
Has the Quick Freezing mode been activated? Is the temperature setting of the freezer compartment and fridge compartment set to something other than Med? Has the door been opened frequently or has hot food been placed in the refrigerator?  The learning function may automatically disable ECONAVI operation during times of frequent use.

ECONAVI operation  is rarely  performed
Is there a power failure? If a power failure occurs, the learning function data collected up until the point of power failure will be lost. The ECONAVI operation will rarely be performed until the learning function has collected data again.

ECONAVI operation is stopped  part way though
If the auto defrost function is turned on during ECONAVI operation, the normal cooling operation will need to be performed after defrost. Therefore the ECONAVI operation may be stopped during this defrost/cooling process. The learning function may sometimes restart the normal cooling operation.

ECONAVI operation is  performed  too often lamp rarely  turns off
Is the light intensity sensor hidden?  Are there dirt or scratches on the control panel where the light intensity sensor is located?  ECONAVI operation may be performed while the refrigerator is being used depending on the conditions of use, but the cooling performance is maintained.

Specifications

Model No| NR-BX471G| NR-BX421G| NR-BX421W| NR- BX421B
---|---|---|---|---
Freezer Star Rating|

Capacity L

| Total| 417| 377| 380
Freezer| 112
Fridge| 267| 227| 230
Prime Fresh| 38| 38| 38
Outside dimensions Width x Depth x Height (mm)| 686 x 695 x

1790

| 686 x 695 x

1680

|

686 x 697 x

1680

| 686 x 695 x

1680

Refrigerant Type| R600a
Net weight kg| 68| 66| 72| 65
Cooling System| Non-frost cooling.
Rated Voltage V Rated Frequency Hz| Refer to the rating label attached inside the cabinet.

References

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