Samsung ‘Refrigerator’ Diagnostic Code Quick Guide


Error Items

LED

TROUBLE

TESTING

I/M-SENSOR (R on Twin I/M units)  F1 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  F2 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  F3 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  F4 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)  F5 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  F6 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  F7 Sensor system in Pantry Room errors. Disconnect heater connector from PCB, check resistance.
PANTRY-SENSOR ERROR  F8 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
WATER HEATER ERROR  F10 Error is displayed when the water reservoir tank heater is open or shorted. Disconnect heater connector from PCB, check resistance. Disconnect heater connector from PCB, check resistance.
EXT-SENSOR  f11 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  f13 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  f12 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  f14 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  f15 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
FRENCH DOOR ICE ROOM SENSOR  f16 Ice 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  f17 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.
FRENCH DOOR ICE ROOM FAN ERROR  f18 This error indicates the Ice Room 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
Uart ERROR COMMUNICATION  f19 This error is not applicable, if the error is detected during diagnostic testing please ignore it. No Repair Necessary
L.M ERROR COMMUNICATION  f20 Communication error within the Main PCB Replace main PCB
P.M ERROR COMMUNICATION  f21 Communication between the Main PCB and Keypad. Check wiring in door & cabinet, Panel PCB, Main PCBF1