Samsung Washer Error Code Sr — System Relay Error
What this means
The Sr error code indicates a system relay error on the main control board. Relays on the board control power to various components like the motor, heater, and water valves. When a relay fails (stuck open or closed), the board can no longer properly control that component. This is an internal control board failure that almost always requires board replacement.
Step-by-step fix
3 stepsPower cycle the washer
Unplug the washer for 10 minutes, then plug it back in. A power surge can sometimes cause a temporary relay fault.
If the code clears and stays clear, the relay may have been temporarily affected by a voltage spike.
Check power supply
Ensure the washer is on a dedicated circuit and not sharing with other high-draw appliances. Verify the outlet provides correct voltage (120V in the US).
Use a surge protector to prevent future voltage-related relay failures.
Inspect the control board
Unplug the washer and remove the top panel to access the control board. Look for visible signs of damage: burnt components, swollen capacitors, discolored solder joints, or burnt relay contacts.
A visibly damaged board confirms the need for replacement.
When to call a professional
The Sr error almost always requires control board replacement. Unless you are experienced with board-level electronics repair, professional service is recommended.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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