Samsung RS757LHQESR/ Series Service Manual page 35

FUNCTION OFR FAILURE DIAGNOSIS
※ Self-diagnostics check list
LED Item
1
F-Sensor Error
2
R-Sensor Error
4
F-Def Sensor Error
5
R-Def Sensor Error
6
Ambient Sensor Error
8
Ice Maker Sensor
Error
13
Humidity Sensor Error
21
F-Fan Error
22
R-Fan Error
23
C-Fan Error
24
F-Defrost Error
25
R-Defrost Error
26
Ice Maker Function
Error
Trouble contents
Slipped out Sensor Housing, Wire-Cut,
Wire-Short, When the sensor pickup
temp is over +50℃ or under -50℃,
Error occurs.
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.
Display error during operation of
applicable fan motor : Feed back
signal line contact error, motor wire
separation, motor error
Display error during operation of
applicable fan motor : Feed back
signal line contact error, motor wire
separation, motor error
When the Freezer Ice Maker error
occurs more than 3 times, the error will
be displayed.
34
Diagnostic method
The voltage between Case Connector
CN2 #1 ↔ #5 should be within 4.5V~1.0V
The voltage between Case Connector
CN3 #1 ↔ #3 should be within 4.5V~1.0V
The voltage between Case Connector
CN2 #1 ↔ #6 should be within 4.5V~1.0V
The voltage between Case Connector
CN3 #2 ↔ #3 should be within 4.5V~1.0V
The voltage between Case Connector
CN5 #7 ↔ #13 should be within
4.5V~1.0V
The voltage between Case Connector
CN90 #3 ↔ #9 should be within
4.5V~1.0V
The voltage between Case Connector
CN7 #13 ↔ #15 should be within
4.5V~1.0V
The voltage between Case Connector
CN2 #1 ↔ #2 should be within 7V~12V
The voltage between Case Connector
CN3 #3 ↔ #4 should be within 7V~12V
The voltage between Case Connector
CN7 #10 ↔ #11 should be within 7V~12V
Since the F-Defrost Heater is linked with
the Drain Heater and the Sub Heater, it is
not able to diagnose the part. So, check
the status of the wire harness connection
related to the F-Defrost Heater.
Since the R-Defrost Heater is linked with
the Drain Heater and the Ice Maker Pipe
Heater, it is not able to diagnose the part.
So, check the status of the wire harness
connection related to the R-Defrost
Heater.
After replacing the Ice Maker, check if it
operates normal.