Samsung RT38 Service Manual page 38

TROUBLESHOOTING
Self-Diagnosis Error Description
LED
NO Blinking
Frequency
F-DEF
1 Twice
-SENSOR
2 3 times EXT-SENSOR
3 5 times F-DEF-ERROR
4 6 times R-SENSOR
5 9 times Rotary Error
Comp start
failure error
Compressor
IPM Fault Error
Comp location
detection error
6 10 times
Comp motor
constraint error
Comp low
voltage error
Comp over
voltage error
7 11 times
F-FAN ERROR
Item Description
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℃)
[ Freezer Defrost Heater ]
Connector Slipped-Out or Open-
Contact, Wire Cut or Short-Circuited,
Defective Thermistor
Freezer 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℃)
PBA-Rotary Switch Slipped-Out or
Open-Contact, Wire Cut or Short-
Circuited,Switch Part Defect
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.
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 voltage between MAIN PCB CN30-
"4(RED) ↔ 7(Gray)" should be within
4.5V~0.5V.
The voltage between MAIN PCB CN31-
"1(WHT) ↔ 2(WHT)" should be within
4.5V~0.5V.
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-
"5(ORG) ↔ 7(Gray)" should be within
4.5V~0.5V.
The voltage between MAIN PCB CN30-
"3(BRN)↔ 7(Gray)" should be within
4.5V~0.5V.
Check the soldering status of the
inverter PCB. (Check if any parts have
short-circuited). Check if the DC 16V
output is less than 13.5V. Check the
Comp and Cycle.
Check the compressor wire connections.
Check the soldering status of the inverter
PCB. (Check if any parts have short-
circuite d). 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.)
The voltage between MAIN PCB CN72-
"9(PNK) ↔ 10(GRY)" should be within
7V~12V
43
Trouble Shooting