Samsung rb195ab** xaa - Defrost and Diagnostic Code Information; Defrost Cycle Timing; Samsung Refrigerator Diagnostic Code Quick Guide; I;M-SENSOR Error

# tsRB195AB RevB 03/30/2011 4
First Defrost Cycle, Both
Fridge & Freezer
Defrost Cycle Fridge only Defrost Cycle Fridge & Freezer
6 hrs, Pause Time 12 minutes 6~11 hrs (varies according to
conditions)
12~23 hrs (varies according to conditions)
Defrost Cycle Timing
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
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
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
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
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
Defrost and Diagnostic Code Information
This model series uses a Defrost Sheath Heater in the Fridge compartment and the Defrost Heater in the
Freezer is part of the Evaporator Coil.
NOTE: Evaporator Covers May Break If Removed While Frozen To Coil. They must be replaced if there is
any damage, as this will cause ―ice‖ to form at top or bottom of the evaporator coil or in the drains.