Error Code 51E
Fridge compressor tried to start but failed
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 51E
What This Means
Inverter PCB solder joint defect or short; DC 15V supply less than 13.5V; Defective fridge compressor; Refrigeration cycle issue
What actually causes this:
Inverter PCB component failure, bad solder joint, or compressor winding failure.
First Thing to Check
Check the fridge compressor wire connector is fully seated and inspect whether the R Room inverter PCB LED is illuminated.
Parts Involved
How to Fix
- 1
Check DC 15V at ZD501 on R Room inverter PCB
- 2
Inspect R Room inverter PCB (LC4) for solder defects
- 3
Verify COMP operating signal at CN201 pins 1 to 3 (DC 2–2.5V high)
- 4
Check CN101 connector seating
This Error Applies To
Samsung RF32FM Series Refrigerators (2013) (2013–present)
Related Error Codes
Wall voltage too low for freezer compressor to run
Fridge compartment defrost sensor has failed or come loose
Freezer defrost sensor is failed or disconnected
Cool Select Room defrost sensor is failed or loose
Freezer temperature sensor is open, shorted, or disconnected
Outside air temperature sensor has failed or lost connection
Fridge section ice maker sensor is open, shorted, or out of range
Fridge fan motor stopped or lost feedback signal