Samsung washer 4C means water is not entering as expected. Start with the supplies and hose installation, then follow the exact model instructions. The message can occur with a supply restriction or installation problem; it does not prove an inlet valve has failed.
What the message is responding to
Successful filling depends on water reaching the washer and remaining available for the cycle. A closed supply, restricted hose or inlet screen, or unsuitable drain installation can interrupt that process. A faucet elsewhere in the house working normally does not establish that both washer connections meet the model requirements.
Separate No Water, Delayed Filling, and a Returning Code
Write down when 4C appears: before washing, on a later rinse, or only on a particular temperature setting. Photograph the full display. Samsung lists 4C2 and 4E2 separately for a hot/cold connection condition, so preserve the final character rather than shortening every display to 4C.
Samsung describes initial weight sensing before filling on applicable models. A sensing pause without an error differs from a stop with 4C. Low visible water alone does not establish a fill failure in an HE washer.
Check the Supplies Before Ordering a Valve
Check for a known water outage, recently closed laundry valves, or a hose pinched after the washer was pushed back. Samsung instructs owners to connect hot and cold supplies correctly and leave both valves fully open. Some Cold settings still call for hot water; selecting Cold does not automatically remove the hot connection requirement.
Check the manual for hose compatibility and water requirements. Samsung warns against Flood Safe hoses. Get help with stuck, leaking, or inaccessible valves; do not pull a stacked machine to reach them.
Inlet mesh screens can collect supply debris. Before disconnecting a hose, isolate power and shut off the water as the matching instructions require, with a container ready for residual water. Follow the model method for screen cleaning and refitting; do not discard screens or probe valve internals. Skip this work when safe access or a reliable shutoff is unavailable.
Use the Symptom to Choose the Next Check
The supply and drain sides are related during a fill complaint. Samsung includes drain-hose installation in its no-fill checks. Compare accessible routing with the installation manual, including insertion, standpipe air gap, and height; leave the factory hose retainer in place.
| Observed pattern | Useful next step |
|---|---|
| New installation or recent move | Check supply connections and drain routing against the installation manual. |
| Cold selected, hot line disconnected | Check whether this model still requires the hot supply. |
| Water enters, then 4C returns | Record the cycle stage and drain behavior; filling once does not settle the diagnosis. |
| Water keeps entering uncontrollably | Stop use; close safely accessible water valves and request service. |
Already Cleaned Screens or Replaced Parts?
A Reddit owner described intermittent 4C on a WF45K6500AV despite several parts replacements. The account proves no cause; record what work was performed and whether it changed the symptom before authorizing another part.
For example, “4C returned on the first rinse after the inlet screens were cleaned” is more useful than “water pressure is fine.” Include any measured supply findings from an installer or technician, the exact temperature selection, and whether both lines are connected. Do not copy forum advice to blow into sensing hoses or replace a board.
Restart Once After Correction, Then Escalate
Samsung allows a one-minute power interruption after its hose corrections, followed by another attempt. This is a restart step, not a repair for restricted flow. If 4C returns after the appropriate owner checks, arrange service instead of repeatedly canceling and restarting the load.
Provide the full model, failure timing, recent installation work, and actual supply checks. Ask what evidence supports a proposed repair before authorizing parts.
Questions owners ask
What does 4C mean on a Samsung washer?
It is a not-filling indication. Samsung groups 4C with 1 4C, nF, and 4E in its US code guidance. Confirm the entire display before choosing the troubleshooting route.
How do I reset a Samsung washer 4C error?
After correcting the relevant hose or supply issue, Samsung permits disconnecting power for one minute and retrying. If the code returns, the restart has not established a repair; continue with service.
Why do I get 4C when water is entering the washer?
Record when water enters and when the error appears. That observation alone does not verify the complete fill process. Supply and drain installation checks still matter; persistent trouble needs diagnosis.
Does cleaning the drain filter fix Samsung 4C?
4C concerns filling. A drain-filter cleaning is not proof that the water supplies or drain installation are correct. Follow the fill checks rather than treating a front-loader drain procedure as a universal 4C repair.
Can a Cold cycle need the hot-water hose?
Yes, on applicable Samsung models. Automatic temperature control can use the hot supply even with a Cold selection. Check your full model manual before assuming a cold-only installation is acceptable.
Is 4C2 the same as 4C?
No. Samsung lists 4C2 and 4E2 in a separate hot/cold connection group. Record the full code and use that model’s corresponding instructions.
Keep the useful details for service
Record the full model, exact display, cycle stage, water location and checks already attempted. Create a repair brief to copy or download. If several symptoms overlap, use the Washer Repair Check without guessing a component.
Related next steps
Sources & model scope
Content reviewed November 5, 2026. Match the exact model and US owner’s manual. These references support the explanation; they are not evidence of an inspection of your machine.
Questions behind this guide
Owner discussions helped identify confusing follow-ups and prior attempts. They are individual experiences; manufacturer information supports the technical explanations above.