Samsung RB31FEJNB Series Service Manual page 48

4. TROUBLESHOOTING
※ Self-Diagnosis Error Description
NO Error Code Item
1 F-DEF ERROR
2 EXT - SENSOR
3 F-SENSOR
4 R-SENSOR
F - DEF -
5
SENSOR
Vacation
6 R-DEF-SENSOR Same as the EXT - SENSOR
LED Lad
7 F-FAN ERROR
8 C-FAN ERROR
Power
9 Freeze LED R-FAN ERROR
LAMP
Comp start failure
error
Compressor IPM
Fault Error
Comp location
detection error
10
Comp motor
constraint error
Comp low voltage
error
Comp over
voltage error
Description
[ Freezer Defrost Heater ]
Connector Slipped-Out or Open-Contact, Wire Cut or
Short-Circuited, Defective Thermistor [Fridge Defrost]
When the defrosting does not complete even after it
does defrosting for more than 120 minutes.
Connector Slipped-Out or Open-Contact, Wire Cut or
Short-Circuited, Abnormal Sensing Temp
(higher than +65℃ or lower than -50℃)
Connector Slipped-Out or Open-Contact, Wire Cut or
Short-Circuited, Abnormal Sensing Temp
(higher than +65℃ or lower than -50℃)
Same as the EXT - SENSOR
Same as the EXT - SENSOR
Same as the EXT-Sensor
When the related Fan Motor operates, it occurs if the
contact of the Feed Back Signal Wire is defective, the
Motor Wire is slipped out or the Motor is defective.
When the related Fan Motor operates, it occurs if the contact
of the Feed Back Signal Wire is defective, the Motor Wire is
slipped out or the Motor is defective.
The error code is displayed when the compressor has
failed to start.
The error code is displayed when the compressor IPM
fault error has occurred.
The error code is displayed when the compressor
location detection failed.
The error code is displayed when the compressor
motor is constrained.
The error code is displayed when the AC Input
Voltage is too low.
The error code is displayed when the AC Input
Voltage is too high.
Remove the MAIN PCB CN70 and CN77 connectors
from the MAIN PCB and read the continuity between
BROWN ↔ ORG wires.
(It differs according to the energy consumption.)
When it reads 0 Ohm, check the Heater short and
when it reads ∞ Ohm, check if the Wire/Thermal Fuse
or the Bimetal is Open.
The voltage between MAIN PCB CN30-"2(WHT) ↔
1(WHT)" should be within 4.5V~0.5V
The voltage between MAIN PCB CN30-"3(GRN) ↔
1(WHT)" should be within 4.5V~0.5V
The voltage between MAIN PCB CN30-"5(BLU) ↔
1(WHT)" should be within 4.5V~0.5V
The voltage between MAIN PCB CN30-"4(YEL) ↔
1(WHT)" should be within 4.5V~0.5V
The voltage between MAIN PCB CN30-"4(YEL) ↔
1(WHT)" should be within 4.5V~0.5V
The voltage between MAIN PCB CN30-"6(RED) ↔
7(Gray)" should be within 4.5V~0.5
The voltage between MAIN PCB CN75-"2(BLU) ↔
1(GRY)" should be within 7V~12V
The voltage between MAIN PCB CN75-"3(ORG) ↔
1(GRY)" should be within 6V~12V
Check the soldering status of the inverter PCB.
(Check if any parts have short-circuited).
Check if the DC 16V output is less than 1 3.5V.
Check the Comp and Cycle.
Check the compressor wire connections.
Check the soldering status of the inverter PCB.
(Check if any parts have short-circuited).
Check the Comp and Cycle.
Check if the compressor and the Cycle is normal.
Check the input voltage.
Check the soldering of the inverter PCB.
(Check if any parts have short-circuited.)
Check the input voltage. (This error occurs when the
input voltage is AC 106 V or lower.)
Check the input voltage.
(This error occurs when the input voltage is AC 310V
or higher.)
48
Trouble Shooting