A Samsung washer 4C error means the washer is not receiving water as expected. Samsung may also describe related water-supply faults as 4E. The cause is often outside the machine: a closed faucet, kinked fill hose, clogged inlet screen, or unusually low household water pressure.
Do not bypass the door lock or test internal electrical parts. Start with the safe checks below and use the instructions for your exact model when they differ.
What the Samsung 4C code means
The control detected that the tub did not fill to the required level within the expected time. The washer may pause before washing, stop during a rinse, or display the code shortly after you press Start.
Common causes
- One or both water faucets are not fully open.
- A hot or cold inlet hose is kinked, pinched, frozen, or connected incorrectly.
- The small mesh screens at the washer inlets are restricted by sediment.
- Household water pressure is temporarily low.
- The supply valves, inlet valve, wiring, or control need professional diagnosis.
Safe checks to try
1. Confirm both faucets are open
Pause the washer and make sure the hot and cold supply valves are turned fully open. Most Samsung washers expect both supplies even when a cold cycle is selected.
2. Inspect the fill hoses
Unplug the washer. Look behind it without crushing the hoses further. Straighten gentle bends and confirm the washer has not been pushed against a hose. Replace a bulging, cracked, rusty, or leaking hose rather than reusing it.
3. Check the inlet screens
Turn both faucets off, unplug the washer, and place a towel below the connections. Disconnect the hoses only if you can do so without strain. Inspect the inlet screens for visible sediment and clean them gently according to the owner’s manual. Do not remove or puncture the screens.
4. Check household flow
If other fixtures also have weak flow, the problem may be the home supply rather than the washer. In freezing weather, do not use an open flame or heat gun on plumbing.
5. Restart once
Reconnect everything securely, open the faucets slowly, check for leaks, restore power, and run a short cycle. A code that returns needs diagnosis rather than repeated resets.
When to call a professional
Stop if a hose connection leaks, the supply valve will not close, the code returns with good water flow, or access would require removing panels. A technician can test the inlet valves, pressure-sensing system, wiring, and control safely.
Related washer guides
If the tub receives no water at all, see why a washer is not filling. If water enters but remains after the cycle, use our washer not draining guide. For leaks around hoses or the cabinet, review washing machine leak checks.
Frequently asked questions
Can I keep using a Samsung washer with a 4C error?
No. Correct the supply problem first. Repeated attempts can waste time and may worsen an existing leak.
Does 4C always mean the inlet valve is bad?
No. Closed faucets, pinched hoses, and restricted screens are common external causes.
Why does 4C appear only on the rinse?
The washer may be having trouble with one supply line or may encounter low pressure when another fixture is running.
Will unplugging the washer fix 4C?
A restart may clear a temporary display, but it will not correct restricted water flow or a failed component.