Panasonic NR-BY552XS User manual

Order No. PHAT110901CE
(Revision : Feb. 2012)
Service Manual
Refrigerator
NR-BY552XS
NR-BY552XW
NR-BY602XS
Product Colour
Stainless Touch (XS)
Korean White (XW)
Destination
Thailand, Malaysia, Singapore
Indonesia, Vietnam, India
Philippines, GULF, PGF
Australia/New Zealand
© Panasonic Appliances (Thailand) Co., Ltd. 2012.
All rights reserved. Unauthorized copying and distribution
is a violation of law.
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.
IMPORTANT SAFETY 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 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.
NR-BY552XS, XW NR-BY602XS

- 2 -
CONTENT
Page
3
4
5
6
7
8
9
10
11
12
13
14
15
16 - 17
18
19
20
21
22
22
23
23 - 24
24 - 25
26
27
28
29 - 31
1. Safety Cautions for Repairing
1.1 Warning
1.2 Caution
2. Specification and Components
2.1 NR-BY552XS, XW
2.2 NR-BY602XS
3. Performance Data
3.1 NR-BY552X (AT 32 ± 1°C)
3.2 NR-BY602X (AT 32 ± 1°C)
4. Display Specification
5. Self Protecting Function
5.1 Protecting for IC
5.2 Protection for compressor locked
5.3 Protection for power supply droping
6. Self Diagnoising Function
7. Temperature Control
8. Inverter Control Display
9. Refrigerator Instruction Guideline
10. Troubleshooting Guide
10.1 Not cool at all [ Both PC & FC (compressor does not operate) ]
10.2 Cool, not enough [ Both PC & FC (compressor operates) ]
10.3 Eco-Navi operation doesn’t work (PC/FC/IC cooling condition is normal)
11. Schematic Diagram
11.1 Wiring Diagram : NR-BY552XS, XW
11.2 Wiring Diagram : NR-BY602XS
12. Disassembly Instruction
12.1 LCD Cover
12.2 Cover Control
12.3 PCB Control
12.4 Feature of Crisper
12.5 Maintain method : Take off Crisper handle
12.6 Maintain method : Crisper handle ass’y
13. Parts Exploded View and Replacement Parts List
13.1 Part Exploded View : Body
13.2 Part Exploded View : Door
13.3 Part Exploded View : Packing
13.4 Replacement Parts List : NR-BY552XS, XW / NR-BY602XS
NR-BY552 / NR-BY602

- 3 -
1. SAFETY CAUTIONS FOR REPAIRING
When you repair the refrigerator, please kindly take care for the following cautions.
1.1 Warning
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.
Caution during brazing
• When you use touch for brazing, please ensure ventilation.
Otherwise, you will be poisoned by carbon monoxide.
Pay attention to using refrigerant
• If refrigerant touches fire, the gas becomes poisonous gas.
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.
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 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.
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 transportatin, adjust the bolt
• Otherwise, the floor may be damaged.
Do not touch the pipe after brazing
• Otherwise, your hands may be burnt.
NR-BY552 / NR-BY602

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2. SPECIFICATION AND COMPONENTS
2.1 NR-BY552XS, NR-BY552XW
MODEL
Destination
Code Attached Model
Material Spec.
System Spec.
Power Source
Plug
Malaysia
MY
Singapore
SG
Indonesia
1D
Vietnam
NR-BY552XS
VN
India
Inverter
1N AU/NZ
K3P
240V/50Hz
Australia/New Zealand Australia/New ZealandPhilippines
PH
NR-BY552XW
Stainless White
K3P
240V/50Hz
AU/NZ
240V/50Hz 230V/50Hz 220V/50Hz220~240V/50Hz 230V/50Hz 230V/60Hz
S3P
Thailand
TH
220V/50Hz
C3P S3P C2P C2P B3P A2P
NR-BY552 / NR-BY602
Specification
Capacity
(Total Gross Volume)
(Total Storage Volume)
Temperature Control
Defrosting
Inner Liner
Insulation
Net Weight
External Dimension
Capacity
Height (mm)
Depth (mm)
Width (mm)
461L
775
745
1714
FC : Electronic control (PCB)
PC : Baffle damper thermostat
Full-automatic heater defrost with Micro Controller
Vacuum Formed ABS resin
80 Kg
Polyurethane foam (cabinet and door)
(FC : 99L, PC : 362L)
551L
(FC : 153L, PC : 398L)
Sealed Unit
Evaporator
Condenser
Refrigerant
Lubricating Oil
Dryer
Compressor
REF. Capa.
Power Input
Type
Charging Amt.
Type
Charging Amt.
Type
Charging Amt.
Cylinder Capa.
Model Name EFI100E13DGH-COECS
27 / 52r / s, 75 / 193W
3
40.5 / 112W
Molecular Sieves (XH-9)
5g.
R600a
65
± 5g
Freol S -10
215
± 5ml
105
± 5 °C
61 ± 8 °C
B = 3819K ± 2%
R10 = 3.899K
Ω ± 3%
2.0 A
± 75% (AT 70 °C)
Closed Temp. (normal) -6.0 ± 1.5 °C
10.17 cm / rev
Fin Tube Type
Wrapper Type (concealed condenser)
Electric Part
Door Switch
Defrosting Control /
Electronic PCB
Heating Device
for Defrosting
Overload Protector
Automatic Temp.
Control Device (PC)
(Baffle Damper)
Defrost Sensor (DFC)
Control
Fan Motor
Type
Rating
Type
Rating
Type
Rating
Type
Type
Rating
Type
Rating
FC Sensor (FCC) Type
Rating
Ambient Temp.
Sensor (ATC)
Type
Rating
Defrost Thermal Fuse Type
Rating
Device (PC)
Device (Crisper)
Light Irradiation Type
Rating
Light Irradiation Type
Rating
Kind
Opening Temp.
Impression I.
Closing Temp.
Type
Defrost Cycle
FBA11J14VXA
Ø 110mm. prop fan (Box Type)
PAS - BY602X (Control)
(1) Ambient Temp. over
34°C 8h
(2) Ambient Temp. 2 3°C ~ 33°C 8h
(3) Ambient Temp. under 22°C 13h
(4) Power on 4h (Rated time)
MM6-8V41
MM1-6187
NTC
B = 3850K
± 2%
R-20 = 18.9K
Ω ± 1.8%
NTC
B = 3435
± 1%
R25 = 10.0K
Ω ± 3%
NTC
Micro Temp.
250V / 10A / 73
°C
LED Lamp PCB
12V / 100mA
LED Lamp PCB
5V / 30mA
Gas Charge Type
230V / 216W
MM3-20DCW
DC 14V / 1.54W
D3D-121 (S.P. - S.T.)
250V / 0.5A

- 5 -
2.2 NR-BY602XS
NR-BY552 / NR-BY602
MODEL
Destination
Code Attached Model
Material Spec.
System Spec.
Power Source
Plug
Thailand
TH
Singapore
SG
Indonesia
1D
Vietnam
NR-BY602XS
VN
India
Inverter
Stainless
1N
Philippines
PH
GULF
AE
PGF
WG
220V/50Hz 230V/50Hz 220V/50Hz
220~240V/50Hz 230V/50Hz 230V/60Hz 220V/50Hz 220V/50Hz
C3P
Malaysia
MY
240V/50Hz
S3P S3P C2P C2P B3P A2P S3P C2P (Shuko)
Specification
Capacity
(Total Gross Volume)
(Total Storage Volume)
Temperature Control
Defrosting
Inner Liner
Insulation
Net Weight
External Dimension
Capacity
Height (mm)
Depth (mm)
Width (mm)
511L
775
745
1846
FC : Electronic control (PCB)
PC : Baffle damper thermostat
Full-automatic heater defrost with Micro Controller
Vacuum Formed ABS resin
86 Kg
Polyurethane foam (cabinet and door)
(FC : 99L, PC : 412L)
602L
(FC : 153L, PC : 449L)
Sealed Unit
Evaporator
Condenser
Refrigerant
Lubricating Oil
Dryer
Compressor
REF. Capa.
Power Input
Type
Charging Amt.
Type
Charging Amt.
Type
Charging Amt.
Cylinder Capa.
Model Name EFI100E13DGH-COECS
27 / 52r / s, 75 / 193W
3
40.5 / 112W
Molecular Sieves (XH-9)
5g.
R600a
65
± 5g
Freol S -10
215
± 5ml
105
± 5 °C
61 ± 8 °C
B = 3819K ± 2%
R10 = 3.899K
Ω ± 3%
2.0 A
± 75% (AT 70 °C)
Closed Temp. (normal) -6.0 ± 1.5 °C
10.17 cm / rev
Fin Tube Type
Wrapper Type (concealed condenser)
Electric Part
Door Switch
Defrosting Control /
Electronic PCB
Heating Device
for Defrosting
Overload Protector
Automatic Temp.
Control Device (PC)
(Baffle Damper)
Defrost Sensor (DFC)
Control
Fan Motor
Type
Rating
Type
Rating
Type
Rating
Type
Type
Rating
Type
Rating
FC Sensor (FCC) Type
Rating
Ambient Temp.
Sensor (ATC)
Type
Rating
Defrost Thermal Fuse Type
Rating
Device (PC)
Device (Crisper)
Light Irradiation Type
Rating
Light Irradiation Type
Rating
Kind
Opening Temp.
Impression I.
Closing Temp.
Type
Defrost Cycle
FBA11J14VXA
Ø 110mm. prop fan (Box Type)
PAS - BY602X (Control)
(1) Ambient Temp. over
34°C 8h
(2) Ambient Temp. 2 3°C ~ 33°C 8h
(3) Ambient Temp. under 22°C 13h
(4) Power on 4h (Rated time)
MM6-8V41
MM1-6187
NTC
B = 3850K
± 2%
R-20 = 18.9K
Ω ± 1.8%
NTC
B = 3435
± 1%
R25 = 10.0K
Ω ± 3%
NTC
Micro Temp.
250V / 10A / 73
°C
LED Lamp PCB
12V / 100mA
LED Lamp PCB
5V / 30mA
Gas Charge Type
230V / 214W
MM3-20DCW
DC 14V / 1.54W
D3D-121 (S.P. - S.T.)
250V / 0.5A

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3. PERFORMANCE DATA
NR-BY552 / NR-BY602
3.1 NR-BY552 (AT 32 ± 1°C)
Thermostat Dial Setting
Mean Fresh Food Compartment Temp. t3 (°C)
(°C)
(°C)
(°C)
(°C)
(°C)
(°C)
(%)
Mean Freezer Load Temp.
Vegetable Crisper Temp.
PC Door Shelf Upper Temp.
Egg Tray Temp.
PC Door Shelf Bottom Temp.
Chilled Case Temp.
Running Ratio
“ 3 ” “ 2 ” “ 1 ”
1.5 ± 2.5 4.0 ± 2.5 7.0 ± 2.5
-22.0 ± 2.5 -20.0 ± 2.5 -15.0 ± 2.5
- 4.0 ± 2.5 -
- 7.0 ± 2.5 -
- 4.0 ± 2.5 -
- 5.0 ± 2.5 -
- 0.0 ± 2.5 -
85 ± 15 80 ± 15 65 ± 15
3.2 NR-BY602 (AT 32 ± 1°C)
Thermostat Dial Setting
Mean Fresh Food Compartment Temp. t3 (°C)
(°C)
(°C)
(°C)
(°C)
(°C)
(°C)
(%)
Mean Freezer Load Temp.
Vegetable Crisper Temp.
PC Door Shelf Upper Temp.
Egg Tray Temp.
PC Door Shelf Bottom Temp.
Chilled Case Temp.
Running Ratio
“ 3 ” “ 2 ” “ 1 ”
1.5 ± 2.5 4.0 ± 2.5 7.0 ± 2.5
-22.0 ± 2.5 -19.5 ± 2.5 -15.0 ± 2.5
- 5.0 ± 2.5 -
- 8.0 ± 2.5 -
- 5.0 ± 2.5 -
- 5.5 ± 2.5 -
- 1.5 ± 2.5 -
85 ± 15 80 ± 15 65 ± 15

- 7 -
4. DISPLAY SPECIFICATION
NR-BY602
DISPLAY
QUICK FREEZING
BUTTON
FREEZING CONTROL
BUTTON
IN-PROCESS INSPECTION
MANUAL DEFROST Hold down QUICK FREEZING BUTTON for over a sec.
Operate the following controls within 3 sec., within 30 sec., after power-on
while PC and FC door are open.
QUICK FREEZING BUTTON FREEZER CONTROL BUTTON
QUICK FREEZING BUTTON
START
CONDITION
AUTOGNOSIS
Indicate AUTOGNOSIS in which case abnormal condition.
During in-process inspection.
NOISE MODE For 45 sec., of the start of IN-PROCESS INSPECTION
JUDGEMENT
①Hold down QUICK FREEZING BUTTON for over a second.
(Manual defrost)
②After 4 hours (Defrost start)
END
CONDITION
COMP
FC FAN
HEATER
LED
: R 6 (71rps)
: VF4 (Ultrahigh Speed)
: DEFROST HEATER OFF
: ECONAVI LED and FREEZER LED [ NORMAL ]
BRINKING (ON_1sec/OFF_1sec)
COMP : R 7 (80rps)
CONTENTS
FOR CONTROL
PROCESS INSPECTION
NR-BY552 / NR-BY602
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
Contents of discussion
Illuminance sensor will be added. Therefore, an inspection of whether to be able to operate normally is necessary.
< In-process inspection of illuminance sensor >
①ECONAVI LED blinks at the start of in-process inspection check whether ECONAVI LED blinks.
④As long as the illuminance sensor is normal, ECONAVI LED goes out check whether ECONAVI LED goes out.
③Lighting of illuminance sensor shall be varied manually or automatically after the completion of aging. (If there is
input variation corresponding to a dark area and a bright area, microcomputer judges that as normal)
In Japan, a dark area and a bright area have been created in the place for inspection process.
②ECONAVI LED lights up after 1 min., of the start of in-process inspection (because if there is less input variation,
microcomputer judge that as abnormal) check whether ECONAVI LED lights up.
During IN-PROCESS INSPECTION
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 LIGHTING...............BAD
JUDGEMENT
１
１１
１
１
１１
１
FREEZER
LED (3 pcs)
QUICK FREEZING
LED
ECONAVI
LED

- 8 -
5. SELF PROTECTING FUNCTION
5.1 Protection for IC
NR-BY552 / NR-BY602
IC order to stop compressor completely.
YES
YES
After 1 hour.
SYSTEM PROTECT CONTROL CYCLE
1st time
OPERATE each 7min X 10 times
COMPRESSOR 1hour STOP OPERATE each 7min X 10 times
SYSTEM PROTECT CONTROL CYCLE
333rd time
STOP COMPRESSOR
NO
YES
YES
9
7
IC cancels to stop compressor.
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 Diagnosing sign.
NO
• IC continues to stop compressor until 1 hour.
• IC indicates Self Diagnosing sign.
NO
• Normal operating.

- 9 -
NR-BY552 / NR-BY602
5.2 Protection for compressor locked
IC order to stop compressor completely.
YES
YES
After 1 hour.
SYSTEM PROTECT CONTROL CYCLE
1st time
OPERATE each 7min X 10 times
COMPRESSOR 1hour STOP OPERATE each 7min X 10 times
SYSTEM PROTECT CONTROL CYCLE
333rd time
STOP COMPRESSOR
NO
YES
8
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 until 1 hour.
• IC indicates Self Diagnosing sign.
NO
NO
• Normal operating.

- 10 -
5.3 Protection for power supply droping
NR-BY552 / NR-BY602
YES
After 1 hour.
NO
YES
YES
7
IC cancels to stop compressor.
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 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.