Error Items
LED
TROUBLE
TESTING
I/M-SENSOR (R on Twin
I/M units)
Ice Maker Sensor Error- open or short-circuit, connector failure. Cause is
also a temperature reading > 122°or < -58 ° F
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
R-SENSOR
Refrigerator Room Sensor Error- open or short-circuit, connector failure.
Cause is also a temperature reading > 122°or < -58 ° F.
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
DEFROST SENSOR OF
R ROOM
Ref. Defrost Sensor Error- open or short-circuit, connector failure. Cause is
also a temperature reading > 122°or < -58 ° F
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
R-FAN ERROR
This error indicates the Refrigerator Evap Fan is not spinning at the correct
RPM or the fan feedback line is open.
Fan voltage at MAIN PCB shall
be between 7V~12V
I/M FUNCTION
ERROR(R on Twin I/M)
This error indicates the Ice tray has not returned to level after an ice
harvest. The error is displayed after three failed attempts.
Replace I/M
COOL SELECT ZONE
SENSOR
Cool Select Zone Sensor Error- open or short-circuit, connector failure.
Cause is also a temperature reading > 122°or < -58 ° F
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
R-DEFROSTING
ERROR
Refrigerator Room defrost heater- open or short-circuit, connector failure,
or defective temperature fuse/bi-metal. Defrost on over 80 minutes
Disconnect defrost connector
from PCB, check resistance
PANTRY-DAMPER-
HEATER ERROR
Sensor system in Pantry Room errors
Disconnect heater connector
from PCB, check resistance
CR-SENSOR 4-Door
CR Room Sensor Error- This can be an open or short-circuit, contact
failure. Cause is also a temperature reading > 122°or < -58 ° F.
The voltage of MAIN PCB
Sensor between 4.5V~1.0V
DEFROST SENSOR CR
ROOM 4-Door
CR Room Defrost Sensor Error- open or short-circuit, connector failure.
Cause is also a temperature reading > 122°or < -58 ° F.
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
DEFROST SENSOR OF
CF ROOM 4-Door
CF Room Defrost Sensor Error- open or short-circuit, connector failure.
Cause is also a temperature reading > 122°or < -58 ° F.
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
CR-DEFROSTING
ERROR 4-Door
CR Compartment Defrosting heater- open or short-circuit, connector
failure, or defective temperature fuse/bi-metal. Defrost on for over 80
minutes
Disconnect heater connector
from PCB, check resistance
CF-DEFROSTING
ERROR 4-Door
CF Compartment defrosting heater-open or short-circuit, connector failure,
or defective temperature fuse/bi-metal. Defrost on for over 80 minutes
Disconnect heater connector
from PCB, check resistance
WATER TANK HEATER
ERROR
Error is displayed when the water reservoir tank heater is open or shorted
Disconnect heater connector
from PCB, check resistance
EXT-SENSOR
Ambient Temp. Sensor Error- open or short-circuit, connector failure.
Cause is also a temperature reading > 122°or < -58 ° F
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
F-SENSOR
Freezer Compartment Sensor Error- open or short-circuit, connector
failure. Cause is also a temperature reading > 122°or < -58 ° F
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
F-DEF-SENSOR
Freezer Room Defrost Sensor Error- open or short-circuit, connector
failure. Cause is also a temperature reading > 122°or < -58 ° F
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
F-FAN ERROR
This error indicates the Freezer Evap. Fan is not spinning at the correct
RPM or the fan feedback line is open.
Fan voltage at MAIN PCB shall
be between 7V~12V
C-FAN ERROR
This error indicates the Condenser Fan is not spinning at the correct RPM
or the fan feedback line is open.
Fan voltage at MAIN PCB shall
be between 7V~12V
CF-SENSOR 4-Door
CF Room Sensor Error- open or short-circuit, connector failure. Cause is
also a temperature reading > 122°or < -58 ° F
The voltage at MAIN PCB
Sensor between 4.5V~1.0V
F-DEFROSTING
ERROR
Freezer defrosting heater- open or short-circuit, connector failure, or
defective temperature fuse/bi-metal. Defrost on for over 80 minutes
Disconnect defrost connector
from PCB, check resistance
CF-FAN ERROR
4-Door
This error indicates the CF Compartment Evap. Fan is not spinning at the
correct RPM or the fan feedback line is open.
Fan voltage at MAIN PCB shall
be between 7V~12V
CR-FAN ERROR
4-Door
This error indicates the CR Compartment Evap. Fan is not spinning at the
correct RPM or the fan feedback line is open.
Fan voltage at MAIN PCB shall
be between 7V~12V
ICE PIPE HEATER
ERROR
Error is displayed when the ice maker fill pipe heater is open or shorted.
Replace Fill Tube Ass'y
Uart ERROR
COMMUNICATION
This error is not applicable, if the error is detected during diagnostic testing
please ignore it.
No Repair Necessary
L?M ERROR
COMMUNICATION
Communication error within the Main PCB
Replace main PCB
P?M ERROR
COMMUNICATION
Communication between the Main PCB and Keypad
Check wiring in door & cabinet,
Panel PCB, Main PCB
Samsung 'Refrigerator' Diagnostic Code Quick Guide
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