Panasonic NR-B30FW1 User manual

© 2009 Panasonic Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
Order Number PHARW0910003CE
Refrigerator-Freezer
Model No. NR-B30FW1
Product Color W: White
Destination E: Europe Continental, B: U.K.
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 2
2 Specifications ----------------------------------------------------- 5
3 General/Introduction -------------------------------------------- 6
4Features------------------------------------------------------------- 7
5 Technical Descriptions ----------------------------------------15
6 Location of Controls and Components ------------------21
7 Installation Instructions ---------------------------------------23
8 Test Mode ----------------------------------------------------------26
9 Service Mode -----------------------------------------------------27
10 Troubleshooting Guide ----------------------------------------29
11 Disassembly and Assembly Instructions ---------------33
12 Maintenance-------------------------------------------------------50
13 Dimensions ------------------------------------------------------- 53
14 Schematic Diagram -------------------------------------------- 56
15 Exploded View and Replacement Parts List ----------- 58

2
1 Safety Precautions
The following are instructions that you must follow in order to prevent accidents during work, and to ensure the safety of the repaired
product.
Hazard and damages that may result from ignoring instructions are classified and explained, below.
The following labels describe the types of rules that need to be followed.
This section warns of the urgent danger of death or serious injury.
This section warns of the risk of death or serious injury.
This section warns of the risk of injury or damage to property.
This label shows a “reminder” action to be paid attention to.
This label shows a “prohibited” action.
This label shows a “compulsory” action to be followed without fail.
Be sure to discharge remaining refrigerant from the refrigeration unit.
Discharge refrigerant outdoors where there is no fire source.
Be sure to instruct 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 a welding machine, the refrigerant could catch fire and explode.
Ventilation close to the floor surface is required, as the refrigerant(R600) is heavier than air.
In particular, the basement must be adequately ventilated.
“Measurement/adjustment of refrigerant refill quantity” in a service must be performed outdoors where
there is no fire source.
Otherwise, you could run the risk of fire/explosion.
Use always a gas alarm.
If any refrigerant remains in work area, there will be a risk of fire/explosion.
Never use a naked flame in a place where any refrigerant might remain.
Do not leave the removed faulty compressor in doors.

3
Before repair
Make sure to cut off the power line before disassembly, parts replacement and assembly.
Otherwise, electrical shock or injury may occur.
Be careful of electrical shocks
Be careful of electric shock from live parts or electrical lead terminals when conducting voltage measurement and other
electrical servicing.
Voltage of the control board is approximately 280V when power is ON.
Do not touch live parts.
When replacing parts, do not touch live parts for at least 3 minutes after disconnecting the plug from the power supply.
(A little time is required for electrical discharge of the condenser)
Use only fuses specified
When replacing fuses, use only specified in the circuit diagram. The use of non-specific fuses may cause fire or
malfunction.
Punch the pipes of the faulty compressor securely.
Otherwise, the refrigerant remaining in the compressor oil might leak out during transporting and could catch fire and
explode.
Discharge refrigerant completely from the used service can for disposal in an outdoor place where there
is no fire source.
Otherwise, you could run the risk of fire/explosion.
Do not damage the refrigeration circuit (piping) of the refrigerator.
As 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 carried in the vehicle must be the least possible, and below the
[regulation][regulated] limit. Keep the service can upright and below 40°C. (Quantity on board: 1.5kg or
below)
Use a designated part
Make sure to use a designated part when the part is marked( ) in circuit diagrams and parts lists.
Otherwise, smoke, fire or failure may occur.
Always conduct a safety inspection after completing service
And check the parts are reassembled correctly. Also confirm other fixings and wiring, for deterioration. Replace as required.
Always use a megohmmeter to measure the insulating resistance between both terminals of the power plug and the earth
terminal, and plug the power supply in after first confirming 1MΩor above.
When setting, check that the power cord or power plug is not jammed or pushed against the rear of the refrigerator.
If the power cord or the power plug is damaged or loose, take appropriate measures such as replacing.
If the pins of the plug or the area the pins attach to are dirty, make sure they are cleaned thoroughly.

4
Install and remove glass shelving securely to prevent risk of injury
When moving, raise the adjustable legs
Dragging the refrigerator will damage the floor. For flooring that may become easily damaged put a protective board in
place.
Do not scrape the metal rails
Take care of very hot parts
The compressor, pipes, etc. can be very hot during operation and directly after stopping. 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.
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 touching the skin may cause frostbite.
Take care of burrs
Be careful not to cut yourself on metal or plastic burrs.
Take care of condenser/evaporator fins
Be careful not to injure yourself on the fin edges.

5
2 Specifications

6
3 General/Introduction
3.1. Flow of Refrigerant

7
4 Features
4.1. Features
4.1.1. Super Energy Saving

8

9
4.1.2. Super Keep-Fresh “Vitamin-Safe”

10

11

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4.1.3. Super Hygienic

13
4.2. Functions
1.
2.
3.
4.

14
5.
6.
7.
8.

15
5 Technical Descriptions
5.1. Temperature control for each compartment
5.1.1. FC temperature control
The compressor is turned on and off detecting the FC temperature.
Operation: The setting temperature “-25°C” to “-17°C”, 9 levels change
Detection: FCC, ATC sensor
1. When power supply is turned on, FC temperature is displayed on the panel PCB by reading FC setting data of micro-
computer memories. The data is written in memory area of microcomputer, 5 seconds after FC setting change. After
that, FC temperature is controlled by setting FC temperature of the panel PCB.
The FC setting data is memorized, 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 table.
3. OFF/ON temperature according to FC temperature setting
The OFF/ON temperature corresponding to each FC temperature setting is as shown in the following tables.
*: TFOFF and TFON that exist in the following table are considered the temperature calculated by
the OFF/ON temperature value at -21°Csetting.
5.1.2. PC temperature control
The compressor and 3 way valve are turned on and off detecting the PC temperature.
Operation: The setting temperature “1°C” to “7°C”, 7 levels change
Detection: PCC, ATC sensor
1. When power supply is turned on, PC temperature is displayed on the panel PCB by reading PC setting data of micro-
computer memories.
The data is written in memory area of microcomputer, 5 seconds after PC setting change. After that, PC temperature
is controlled by setting PC temperature of the panel PCB. The PC setting data is memorized though the power supply
of this appliance is turned off.
ATC correction temperature Turning off temperature
(OFF temperature)
Turning on temperature
(ON temperature)
34°C or above -24.0°C -16.0°C
11°C to 33°C (-23.5)+
{(-23.5)-(-24.0)}×
(ATC correction temperature-10)/
(34-10)
(-15.6)+
{(-15.6)-(-16.0)}×
(ATC correction temperature-10)/
(34-10)
10°C or below -23.5 -15.6
ATC correction temperature Turning off temperature
(OFF temperature)
Turning on temperature
(ON temperature)
(-17°C) setting TFOFF + 4°CTFON+4°C
(-18°C) setting TFOFF + 4°C ×(3 / 4) TFON + 4°C ×(3 / 4)
(-19°C) setting TFOFF + 4°C ×(2 / 4) TFON + 4°C ×(2 / 4)
(-20°C) setting TFOFF + 4°C ×(1 / 4) TFON + 4°C ×(1 / 4)
(-21°C) setting TFOFF TFON
(-22°C) setting TFOFF - 3.9°C ×(1 / 4) TFON - 3.9°C ×(1 / 4)
(-23°C) setting TFOFF - 3.9°C ×(2 / 4) TFON - 3.9°C ×(2 / 4)
(-24°C) setting TFOFF - 3.9°C ×(3 / 4) TFON - 3.9°C ×(3 / 4)
(-25°C) setting TFOFF - 3.9°CTFON-3.9°C

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2. The setting temperature
The temperature, when it set on 4°C.
The OFF/ON temperature value corresponding to each ATC temperature is as shown in the next table.
3. OFF/ON temperature according to PC temperature setting
The OFF/ON temperature corresponding to each PC temperature setting is as shown in the following tables. More-
over TPOFF and TPON that exist in the following table are considered the temperature calculated by the OFF/ON
temperature value at 4°Csetting.
*: TPOFF and TPON that exist in the following table are considered the temperature calculated by
the OFF/ON temperature value at 4°Csetting.
5.1.3. VC temperature control
The single damper motor is turned on and off detecting the VC temperature driving time.
Operation: The setting temperature “5°C” to “0°C”, 6 levels change
Detection: SCC, ATC sensor
1. When power supply is turned on, VC temperature is displayed on the panel PCB by reading VC setting data of micro-
computer memories. The data is written in memory area of microcomputer, 5 seconds after VC setting change.
2. According to input of SCC temperature variation, the single damper motor is actuated (normal rotation/reversion).
Then the motor is stopped on number of step that set previously.
3. When power supply is turned on, necessarily for getting rid of condition of half opened damper flap, it is closed by
1,850 steps reversion of the single damper motor.
4. After the motor stopped, if there is no variation of input temperature for 60 minutes, the motor is actuated forcibly.
When damper flap is opened, it is closed forcibly (1,850 steps reversion). When it is closed, it is opened forcibly
(1,850 steps normal rotation). After that, according to the condition of input temperature, the single damper motor is
actuated.
5. The damper flap is closed forcibly, during turning on electricity on the heater, during waiting condition after defrost-
ing, during delay of FC fan after defrosting.
6. During compressor stopping, damper flap is closed.
7. The single damper motor wait for 1 second, after its output is stopped.
8. VC temperature adjustment
According to VC temperature setting, the single damper flap is opened and closed.
ATC correction temperature Turning off temperature
(OFF temperature)
Turning on temperature
(ON temperature)
34°C or above 8.5°C 10.2°C
11°C to 33°C 6.1 +
(8.5 - 6.1) ×
(ATC correction temperature - 10)/
(34-10)
7.7 -
(10.2 - 7.7) ×
(ATC correction temperature-10)/
(34-10)
10°C or below 6.1 7.7
ATC correction temperature Turning off temperature
(OFF temperature)
Turning on temperature
(ON temperature)
(7°C) setting TPOFF + 3.3°CTPON+3.3°C
(6°C) setting TFOFF + 3.3°C ×(2 / 3) TPON + 3.3°C ×(2 / 3)
(5°C) setting TFOFF + 3.3°C ×(1 / 3) TPON + 3.3°C ×(1 / 3)
(4°C) setting TPOFF TPON
(3°C) setting TPOFF - 3.5°C ×(1 / 3) TPON - 3.5°C ×(1 / 3)
(2°C) setting TPOFF - 3.5°C ×(2 / 3) TPON - 3.5°C ×(2 / 3)
(1°C) setting TPOFF - 3.5°C TPON - 3.5°C

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5.2. FC Defrost Control
Cumulating the compressor running time of certain period
or time after defrosting according to room temperature and
ATC temperature, defrosting cycle starts.
Maximum defrosting time is 60 minutes.
5.3. 3-Way Valve Control
Cooling Mode Change Control is controlled by detected
temperature of PEC, FCC, PCC, SCC.
5.3.1. Operation condition of 3-Way Valve
1. In case PEC sensor temperature is 4°C or above
• PEC sensor temperature is Turning on temperature
(ON temperature) or above------------ PC cooling mode
• PEC sensor temperature is Turning off temperature
(OFF temperature) or below----------- FC cooling mode
2. In case PEC sensor temperature is less than 4°C
FC Cooling Mode is set.
However, PC Cooling Mode is set, until PCC sensor
temperature is become OFF temperature during PC
Cooling Mode.
3. During FC Cooling Mode
FCC sensor temperature is OFF temperature or below
------------------------- Compressor off mode
4. However, during FC Cooling Mode, though FCC sen-
sor temperature is OFF temper below, there is a case
not to become Compressor OFF Mode, according to
VC setting.
5. However, PC Cooling Mode is forcibly ended when
reaching at time PC Cooling Mode below. (Forcible
OFF Cycle Defrost)
When condition of PC Cooling Mode is satisfied as
above mentioned, it is shifted to PC Cooling Mode.
When power is turned on: Forcible OFF Cycle Defrost is
started from Defrost stopping.
Normal Time:
PC Cooling Mode is continuously for 10 hours.
PC Cooling Mode is reset at the same time with
Time Rest
5.3.2. 3-Way Valve Control when power is
turned on
It is FC Cooling Mode from power turning on to 15 minutes,
PC Cooling Mode from 15 minutes to 40 minutes, to be nor-
mal 3-Way Valve Control after 40 minutes.
5.3.3. Setting operation: Refrigerant
Cycle pattern is changed by 3-Way
Valve position
Basically 3-Way Valve operation of each Mode as shown
below.
5.3.4. Initial Control of 3-Way Valve
When power is turned on, Initial Control of 3-Way Valve is
done.
Initial Control: 3-Way Valve is opened towards PC side
(Positive pulse 5 times), then 1 second after that, it is
opened toward FC side (Negative pulse 5 times).
5.3.5. Evacuation Mode
When power is turned on, Initial Control of 3-Way Valve is
done.
Starting: The valve is opened toward PC side of 3-Way
Valve when “Freezer set button” is pressed on Self-Diag-
nosis Mode*.
And “P” “FU” characters are displayed on the control
panel.
•Self-Diagnosis Mode can be started when “Super Freeze
button” on the control panel is pressed more than 5 sec-
onds.
Ending: Press “Freezer set button” again, then Evacuation
Mode is ended and Self-Diagnosis Mode appear again.
During Evacuation Mode, to press “Super Freeze button”
the Mode is ended.
Or 7 minutes after starting the Self-Diagnosis Display Con-
trol, at the same time Self-Diagnosis Mode is ended too.
Cumulating time for defrosting
4 hours Initially started Cumulating com-
pressor running
time
8 hours When room and ATC temp. is 25°C
or above
12 hours When room temp. is 19°C or above Cumulating time
after defrosting
28 hours When room temp. is 18°C or below
Basic Mode 3-Way Valve
condition
Compressor
PC Cooling Mode PC side open ON
FC Cooling Mode FC side open ON
Compressor OFF Mode PC side open OFF
FC Defrost Mode FC side open OFF
During waiting after FC
Defrost
FC side open OFF
During Precool Control FC side open ON

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5.4. Antibacterial deodorant control (Deodorizing fan control, Antibacterial
PC-LED control)
5.4.1. ON/OFF control of Deodorizing fan
Press and hold the Hygiene Plus button for 0.5 second. “Hygiene Plus” indicator lights up and Antibacterial deodorant
control starts.
Press and hold the Hygiene Plus button for 0.5 second “Hygiene Plus” indicator lights off and Antibacterial deodorant
control stops.
ON/OFF of Deodorizing fan is controlled by ATC sensor, FCC sensor, PCC sensor and PC door open or close.
5.4.2. Operation control of Deodorizing fan
1. Press and hold the Hygiene Plus button for 0.5 second.
First of all, it enters A mode that is rapid deodorization driving, the deodorizing fan drives for 120 minutes continu-
ously.
After starting B mode that is normal deodorization driving, the deodorizing fan control starts.
2. Press and hold the Hygiene Plus button for 0.5 second when antibacterial deodorant control starts.
When the antibacterial deodorant control stops (C mode), the deodorizing fan stops.
3. When power supply is turned on.
The deodorizing fan stops, even if A, B or C mode, when ATC is 34°Cor above and while FCC is 27°Cor above.
4. When PC door open.
The deodorizing fan stop forcibly even if A, B or C mode, While PC door opens. (To be dewy prevention, frost preven-
tion)
5.4.3. Antibacterial PC-LED control
1. Basic operation
n A or B mode of the deodorizing fan control, antibacterial PC-LED turn on while the deodorizing fan drives. (If the
fan stops, the LED is turned off.)
2. Exceptional control
In A or B mode of the deodorizing fan control, antibacterial PC-LED is turned on forcibly while PC door opens.
5.5. Photosynthesis-freshness-improving effect control
Input: To press and hold the Vitamin-Safe button for 0.5 second.
Output: LED of VC (Green LED, Blue LED)
Content of processing: Press and hold the Vitamin-Safe button for 0.5 second, Vitamin-Safe indicator lights up and both
the blue LED and the green LED blink at the same time. It is operating a photosynthesis-freshness-improving effect con-
trol. While operating the control, press and hold the Vitamin-Safe button for 0.5 second, the control stops and “Vitamin-
Safe” indicator lights and LED of VC are turned off.
5.6. FC Fan Control
FCDC Fan Motor (FC fan) operation is controlled, to prevent a trip of compressor when initial pull down, for making prop-
erly the temperature in the FC and the control of a power consumption increase.
Detection: ATC sensor
AT 10°C or below 11°C to 21°C22°C to 28°C29°C or above
When compressor ON When PC is cooled ON ON ON ON
When FC is cooled ON ON ON ON
When Compressor OFF The fan drive
for 30 minutes
after compres-
sor OFF
The fan drive
for 10 minutes
after compres-
sor OFF
The fan OFF The fan OFF
Photosynthesis-freshness-improving
effect control
While operating the control While stop
Blue LED 40Hz flashing
(ON/OFF: at each of 9.1msec)
OFF
Green LED OFF

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• Control of starting
FC fan motor is rotated of high speed, for 10 seconds after starting.
• Synchronous control of compressor
FC fan is operated, while compressor is operated.
FC fan is operated, while FC Cooling Mode.
• Control of Door Open/Close
FC fan is stopped while FC door is opened.
• FC fan delay control, when FC defrost is stopped
When Defrost ends, three minutes pass after compressor works, the FC fan does the forcibly stop for six minutes.
• Control of FC Fan rotational speed
High speed drive: DC 12V
Common drive: DC 10V
Stop: 0V
5.7. Compressor Rotational Speed Control
For securing the amount of cooling according to the overload at a high ambient temperature, the rotational
speed of the compressor is changed by difference of temperature between FCC and FC Control setting, PCC
and PC Control setting.
Detection : FCC, PCC, ATC sensor
5.7.1. Normal time
•The judgment of compressor ON: FCC is ON temperature or above
or
PC and FC Cooling Mode
•The judgment of compressor OFF: While FC is cooling FCC is OFF temperature OFF or above
While power is turning on of FC Defrost Heater,
While waiting of compressor start.
5.7.2. The use rotational speed
•The rotational speed of compressor is changed by deference between FCC temperature standard value (ON tempera-
ture) and FCC temperature, PCC temperature standard value and PCC temperature.
The rotational speed according to ambient temperature is as follows, it doesn't drive in other rotational speeds.
•The use rotational speed
•The use rotational speed according to ambient temperature is as follows
•In case Super Freeze
Ambient temperature is 21°C or below 43 / 59 r/s
Ambient temperature is 22°C or above, 33°C or below 59 / 71 r/s
Ambient temperature is 34°C or above 59 / 71 r/s
In case normal control
ATC correction temperature is
21°C or below
PC Cooling Mode Common
FC Cooling Mode Common
ATC correction temperature is
22°C or above, 28°C or below
PC Cooling Mode Low speed
FC Cooling Mode High speed
ATC correction temperature is
29°C or above, 33°C or below
PC Cooling Mode Low speed
FC Cooling Mode High speed
Setting rotational speed of compressor
Rotational speed R1 R2 R3 R4 R5
Setting value r/s 25 39 43 59 71
Ambient temperature Rotational speed of compressor
A 21°C or below 25/39/43 r/s
B 22°C to 28°C 25/39/43/59 r/s
C 29°C to 33°C 43/59/71 r/s
D 34°C or above 59/71 r/s

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*Notes
In case of A and B, the rotational speed is 43r/s from when power is turning on to compressor OFF.
However in case of setting of “Super Freeze”, the rotational speed of “Super Freeze” take precedence.
5.8. Compressor starting control
The compressor is not start while waiting timer is operating.
And when power is turned on, compressor starting control is not available.
5.9. Holiday Control
To activate:
Press and hold the Fridge Set button for 3 seconds. The “Fridge” temperature is not displayed while “Holiday” indicator
lights up. The LED lamp will not light up during Holiday mode.
To deactivate:
Press and hold the Fridge Set button for 3 seconds. The “Fridge” temperature is displayed while “Holiday” indicator lights
off.
For the OFF/ON temperature of PC “4” setting, corresponding to each ATC correction temperature. PC temperature is
adjusted to add 10°C to each OFF or ON temperature.
The acceptance of the refrigeration setting by to press “Fridge Set button” becomes to be invalid during Holiday Control.
The room lamp is turned off when PC Door is opened, during Holiday Control.
After power turning on 0 minute
After FC Defrost stopping (Improvement of start after defrost) 3 minutes
After compressor stopping (Prevention of trip when re-starting) 10 minutes
Sequence protection 10 minutes
Under voltage protection, DIP-IPM protection 10 minutes