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Samsung calls these “information codes”. Many point to something you can sort out in a few minutes, such as a closed tap or a blocked filter. Others mean a part needs testing, and this page tells you which is which.
Checked against Samsung’s own guidance, October 2026
Before you check anything: switch the appliance off at the wall first. Never remove covers or panels from a machine that’s plugged in. If you smell burning, see scorching or the appliance trips your electrics, leave it switched off and get it looked at.
Newer Samsung machines show codes ending in C (such as 4C); older ones often show the same fault ending in E (4E). They mean the same thing.
If the taps are on and water is reaching the hose but the machine still won’t fill, the inlet valve or water level sensor needs testing.
If it’s definitely on the cold supply, the temperature sensing needs checking.
If the filter and hose are clear and the code returns, the drain pump has usually failed.
If the door is shut and the code stays, the door lock or catch is likely at fault.
If it comes back, the door lock needs replacing. It’s a common, reasonably priced repair.
No repair is needed unless the code appears with the Add Door closed.
If small, even loads still trigger it, the suspension or motor speed sensing needs checking.
This is information rather than a fault.
If the hose is correctly fitted and clear, the cause needs tracing on site.
If it happens again, the water level sensor or inlet valve is usually at fault.
If it returns, the level sensor or its tube needs checking.
If it comes back, the motor, its wiring or the control board needs testing.
If it comes back, the heater, temperature sensor or wiring needs testing. Leave it off if it also trips your electrics.
If you see it again, the wiring between the boards or a board itself needs checking.
If it keeps appearing, the sensor or its connection needs checking.
If it keeps happening on a direct socket, the power board or your supply needs checking.
Every code on this page has been checked against Samsung’s own support guidance. Codes can differ between models and years, so your manual has the final word. LDN Appliance Care is independent and not affiliated with Samsung.
Message us a photo of the display and the model number (usually on a label inside the door or around the door rim) and we’ll tell you what it points to and whether it’s likely to be worth repairing.
Book a slot online or give us a call. £40 call-out including diagnosis, and a clear quote before any work starts.