Samsung washer 4C error code meaning and what to check first

On a Samsung washer, the 4C code usually means the machine isn’t getting water the way it expects. Start with the water supply: check the taps, hoses, and inlet screens before you assume the washer itself has failed. If the code comes back after those reversible checks, stop and contact Samsung or a technician.

What the 4C code is telling you

A 4C code is Samsung’s way of flagging a water inlet problem. In plain terms, the washer is not getting enough water, or it isn’t detecting water coming in as expected.

The usual symptom is that the washer starts a cycle, then fills very slowly, stops early, or refuses to fill at all and shows 4C. If the tub stays nearly empty when it should be filling, that fits the code. Some Samsung models may show a slightly different behavior or a related code name, so the exact display can vary by washer version.

Before you start

• This article is for a washer that is showing 4C during fill or just before fill.
• Use the washer’s exact model number and owner’s manual if your display behavior does not match what you see here.
• If you smell burning, see water leaking, or find damaged hose fittings, stop and get help instead of continuing.
• If the washer’s water supply is already weak at the wall taps or nowhere else in the home has normal flow, the problem may be outside the washer.

Check the water supply first

Start with the water source, because that’s the safest place to look and the easiest place to fix.

1. Make sure both the hot and cold supply taps behind the washer are fully open.
2. Look at the hoses from the tap to the washer and straighten any kink, bend, or pinch you find.
3. Check that the hoses are not crushed behind the machine or pressed flat against the wall.
4. If the washer is on a cycle that uses only one supply line, confirm that the tap for that line is open all the way.

If the hoses were pinched or a tap was partly closed, correct that first and run the washer again. If water flow in the home seems weak everywhere, the washer may be fine and the issue may be with the household supply instead of the machine.

Clear the inlet screens and reconnect the hoses

If the taps are open and the hoses look normal, clean the small inlet screens where the hoses connect to the washer. This is one of the most common reversible fixes when a Samsung washer shows 4C after working normally for a while.

1. Turn the washer off.
2. Unplug it if you need to move it or work near the rear connections.
3. Close both water taps.
4. Put a towel or shallow container under the hose connections to catch leftover water.
5. Unscrew the hoses from the back of the washer.
6. Check the small mesh screens in the inlet ports if your model has them.
7. Remove any visible sediment or buildup gently. Do not push debris farther into the opening.
8. Reconnect the hoses firmly, making sure each one goes back to the correct inlet.
9. Open the taps again and check for leaks before pushing the washer fully back into place.

If the code clears after this, the issue was probably restricted water flow at the inlet. If it comes back right away, the restriction may still be in the supply line, or the washer may need service.

When to reset the washer and recheck the code

After you’ve checked the supply and cleaned the inlet screens, run a short fill or quick wash cycle and stay nearby for the first few minutes. That gives you a clear read on whether water is now entering at a normal pace.

If your model allows a simple power reset, turn the washer off and back on after the supply check is complete. A reset can clear a stale alert, but it should come after the likely cause has been addressed. If you reset first and the code returns as soon as the washer tries to fill again, that points back to an unresolved water supply problem rather than a one-time glitch.

If the washer fills normally after the reset, the problem was likely a blocked tap, a kinked hose, or a clogged inlet screen. If it hesitates and then shows 4C again, go back and recheck the taps, hose routing, and inlet screens before moving on.

Verify the fix worked

You’ve likely fixed the problem if the washer starts its cycle and the tub fills at a normal pace without showing 4C again.

If the washer still shows 4C even after open taps, straight hoses, clean inlet screens, and a reset, the issue is less likely to be something you can clear from the outside. At that point, the fault may be in the washer’s inlet valve, wiring, pressure sensing, or control system.

When to stop and get service

Stop troubleshooting and contact Samsung support or a qualified technician if the washer still shows 4C after you’ve confirmed open taps, straight hoses, and clean inlet screens.

Other red flags include:

• No water reaches the washer even though the household tap works elsewhere.
• The code returns immediately every time you start a cycle.
• You see leaking, damaged hose fittings, or cracked connections.
• The machine behaves as if it is filling, but the water level never changes.
• The washer has a history of inlet valve or control issues and the same code keeps coming back.

Those are not good cases for guesswork, especially if the unit is still under warranty.

How to keep 4C from coming back

The easiest prevention is routine care around the water connection. Leave the taps fully open during normal use, and check that the hoses stay free of tight bends after you push the washer back into place.

It also helps to look at the inlet screens during regular cleaning or whenever you move the washer for floor cleaning. If your home has sediment in the water supply, those screens can clog again over time.

If the washer sits in a cramped laundry nook, leave enough room so the hoses aren’t crushed against the wall. Small changes in placement can prevent a repeat 4C code later.

Conclusion

If you’ve already checked the taps, hoses, and inlet screens and the code still returns, arrange service for the exact model number.