Samsung washer / fill system
Samsung Washer 4C Error: Meaning, Fixes, and Repair Cost
The Samsung washer 4C error means the washer is not filling correctly. Check water valves, hoses, inlet screens, and pressure before repair.
Quick answer
What it means
The Samsung washer 4C error means the machine is not receiving enough water in the expected time. The cause is often a closed valve, pinched hose, clogged inlet screen, or weak inlet valve.
Likely causes
- Wall water valve not fully open
- Pinched hot or cold inlet hose
- Clogged inlet screen
- Low household water pressure
- Failing water inlet valve
Safe first checks
- Confirm hot and cold supply valves are fully open.
- Inspect both inlet hoses for kinks, crushing, or flood-safe valve lockout.
- Turn off water, remove hoses, and rinse clogged inlet screens.
- Run cold and hot fill separately to isolate one side.
Likely parts and repair cost
Typical repair range: $95-$240. Parts or systems commonly considered:
- Water inlet valve
- Inlet screen
- Pressure sensor hose
Stop and call a pro when
- A hose is bulging or cracked.
- The valve buzzes loudly or trips power.
- The tub overfills instead of filling slowly.
Start by identifying when 4C appears
The timing of the code is more useful than the code alone. Record whether 4C appears at the start of every cycle, only on hot or cold selections, during rinse, or after the washer has already filled. Also record the complete model number and any recent change: new hoses, plumbing work, a moved washer, freezing weather, or a flood-safe hose that may have closed after a pressure surge.
Samsung's US guidance groups 4C with other not-filling messages. It tells users to check both supply hoses, fully open the water valves, inspect the drain-hose installation, power-cycle the washer, and clean inlet screens. That sequence matters because replacing a valve cannot fix a closed faucet, kinked line, incorrectly installed drain hose, or low household flow.
Use the symptom to narrow the fill path
| What you observe | Check next | Likely direction |
|---|---|---|
| No sound and no water on either temperature | Confirm valves, hose condition, and a model-valid cycle start | Supply, control, or lock condition |
| Cold fills but hot selection produces 4C | Check the hot valve, hot hose, and hot inlet screen | One side of the supply path |
| Water enters only as a weak trickle | Compare wall flow with the hose disconnected into a bucket | Low supply flow, screen, or inlet valve |
| Washer fills and immediately drains | Check drain-hose height and insertion depth | Siphoning rather than a simple inlet failure |
| Water keeps entering after power is off | Close the wall valves and request service | Mechanically stuck inlet valve |
Safe water-supply test
- Cancel the cycle, unplug the washer, and close both wall valves. Photograph the hot and cold hose positions before disconnecting anything.
- Inspect hoses for a pinch, bulge, crack, or flood-safe indicator. Replace a damaged hose rather than trying to straighten or patch it.
- Place one hose at a time into a bucket and briefly open its wall valve. Strong flow from one side and weak flow from the other points to the home supply or hose before the washer.
- With water off again, check the inlet screens at the washer connection. Rinse loose sediment gently; do not puncture or permanently remove the screens.
- Reconnect the hoses without cross-threading, open the valves slowly, dry the fittings, and watch for leaks before restoring power.
- Confirm the drain hose follows Samsung's installation guidance. Samsung's US troubleshooting page specifies an insertion depth of about 6 to 8 inches for the condition it describes.
After the external path is verified, disconnect power for one minute and run a simple rinse test. If one inlet still fails while wall flow is strong, the next diagnosis may involve the inlet valve, pressure-sensing path, wiring, or control. Those parts should not be guessed from the code alone.
What to ask for in a repair quote
Ask the technician to state whether the fault was confirmed at the inlet valve, pressure sensor path, wiring, or control. A quote should list the exact part number, labor, diagnostic charge, tax, and warranty. If the recommendation is an inlet-valve assembly, ask whether both hot and cold solenoids are part of that assembly and whether supply flow was measured before the part was selected.
The $95-$240 amount on this page is a planning band for a straightforward fill-path repair, not a guaranteed local price. Tight access, stacked installation, corrosion, multiple failed valves, or control diagnosis can raise the total. A free hose-position or screen cleaning fix belongs at the low end because no replacement part is required.
Editorial review
Manually reviewed July 29, 2026 against Samsung US troubleshooting for 4C, 4E, and nF not-filling errors. Repair Worth It is independent and is not Samsung or a service provider. Use the exact model manual when hose layout or reset steps differ.
Source trail
Samsung's US support page supplies the code meaning and fill-path checks. The CPSC link lets a reader check the complete model for a recall before arranging paid work.
Questions people ask
Does Samsung washer 4C mean the water inlet valve is bad?
Not always. The inlet valve is one possibility, but closed valves, clogged screens, pinched hoses, and low water pressure are simpler causes to rule out first.
Can I fix a Samsung 4C error myself?
Many first checks are safe with water turned off and power disconnected. Replacing an inlet valve is more involved and may be better handled by a technician.