What does 4C mean on a Samsung washer?

4C means: Water supply / not filling error. The most likely parts involved are water inlet valve, water supply hoses, inlet mesh filter screens.

How much does it cost to fix 4C?

A typical water inlet valve replacement costs about $110–$220 nationally, parts and labor included. This is a reference range, not a quote — local prices vary.

Why did my Samsung washer show 4C right after it was installed or moved?

This often happens when a faucet was left closed or only partly open, or when a hose got kinked as the washer was pushed into place. Check the faucets and hoses first.

Can I still use my washer while it shows 4C?

The washer will not run a normal cycle without enough water. Fix the water supply problem first, then start a new cycle to see if the code clears.

Error codes › Washer › Samsung

Samsung Washer 4C Error Code

Water supply / not filling error

Applies to: All digital display Front-Load and Top-Load models. May also appear as 4E, nF, 1 4C.

What's going on

The 4C code on a Samsung washer means water is not coming into the washer fast enough, or at all, during the fill step. The cause is often simple, like a closed faucet, a kinked hose, or clogged filter screens. If those check out, the water inlet valve may need to be replaced.

When a cycle starts, the washer opens its water inlet valve and expects water to flow in at a certain rate. It watches how quickly the water level rises. If the level does not rise as expected within a set time, the washer stops and shows 4C.

This code applies to Samsung front-load and top-load washers with a digital display. Error codes can differ between model generations, and some older models use a different code for a similar water supply problem. Check your model number against your owner's manual to confirm.

The code is not dangerous by itself. It is the washer protecting itself from running a cycle without enough water.

Likely causes

water supply hoses — A hose that is kinked, pinched behind the washer, or connected to a faucet that is only partly open will limit water flow. A frozen hose in a cold area can also block water completely.
inlet mesh filter screens — Small mesh screens where the hoses connect to the washer catch sand, rust, and mineral buildup. Over time they can clog and slow the water to a trickle.
water inlet valve — This electric valve opens to let water in. If it is worn out, stuck, or not getting a signal to open, water cannot enter even when the supply is fine.

The same code can mean different things on different model generations. Check the model number on your washer's rating plate before ordering parts.

Can you fix it yourself?

Usually a straightforward DIY fix.

Safe things to check first

Make sure both the hot and cold faucets behind the washer are turned fully on. Then check that other faucets in your home have normal water pressure.
Look at the supply hoses behind the washer. Straighten any kinks and make sure the washer is not pushed back against them.
Unplug the washer or switch off its breaker for about one minute, then restore power and try a new cycle. This can clear a one-time error.
To check the inlet screens, first unplug the washer and turn both faucets off. Put towels on the floor and keep a bucket handy. Then unscrew the hoses from the back of the washer and look for debris in the small screens. Rinse them gently and reconnect the hoses snugly before turning the water back on and checking for leaks.

When to call a technician

If the faucets are open, the hoses are clear, and the screens are clean but 4C keeps coming back, the water inlet valve is the likely problem. A handy owner can often replace it with the correct part, but call a qualified appliance technician if you are not comfortable doing that or if the code stays after the valve is changed.

What the repair usually costs

$110–$220

Water inlet valve replacement, parts and labor — national reference range

Confidence: medium (based on 2 cost guides). Plus a service call fee of about $50–$100, often credited toward the repair.

This is not a quote. Prices vary by region and by model.

Repair or replace?

Repair usually makes sense. Even the high end of this repair stays under $500, about half the price of a typical new washer.

A typical new washer costs about $700–$1,300.

Check your washer — free, 2 minutes

Common questions

What does 4C mean on a Samsung washer?: 4C means: Water supply / not filling error. The most likely parts involved are water inlet valve, water supply hoses, inlet mesh filter screens.
How much does it cost to fix 4C?: A typical water inlet valve replacement costs about $110–$220 nationally, parts and labor included. This is a reference range, not a quote — local prices vary.
Should I repair or replace my washer?: Repair usually makes sense. Even the high end of this repair stays under $500, about half the price of a typical new washer.
Can I fix 4C myself?: Usually a straightforward DIY fix.
Why did my Samsung washer show 4C right after it was installed or moved?: This often happens when a faucet was left closed or only partly open, or when a hose got kinked as the washer was pushed into place. Check the faucets and hoses first.
Can I still use my washer while it shows 4C?: The washer will not run a normal cycle without enough water. Fix the water supply problem first, then start a new cycle to see if the code clears.