4C on a Samsung washer (4E on some models) means the machine asked for water and did not get enough of it in the time it expected. It is a water supply fault, not a washer fault, and that distinction is worth money to you.
Here is what it actually turned out to be across the last five of these I fixed.
What 4C really was, five times
- Three of five — something was restricting the water getting in. Clogged inlet screens on two of them. A blocked pressure tube on the third.
- Two of five — the water inlet valve had failed and needed replacing.
So more often than not, nothing on the washer was broken. Something was in the way.
The Stark County version of this problem
One of those clogged screens is worth describing properly, because I see this locally more than anywhere else.
A Samsung washer throwing 4C, and the cold water inlet screen was packed solid with water softener resin. Not sediment, not scale — the little beads out of the softener tank, which had let go and travelled through the house plumbing into the washer. The rest of the machine was cycling perfectly. Clean the screen, and the fault is gone.
If you are on a softener and it is getting on in years, that is worth knowing. Resin escaping the tank does not only hit the washer — it shows up in faucet aerators and dishwasher inlets too. A washer throwing 4C is sometimes the first thing that tells you the softener bed has broken down.
Check these before you call anyone
All three of these are free and take about ten minutes:
- Both taps fully open. Obvious, but a half-turned cold tap causes this exact code, and it happens after anyone works behind the machine.
- The inlet screens. Turn the taps off, unthread the fill hoses from the back of the washer, and look into the machine’s inlet ports. There is a fine mesh screen in each. If it is grey with grit, or full of what looks like tiny amber beads, that is your fault. A toothbrush and running water usually clears it.
- The hoses themselves. Kinked behind the machine, or a hose that has been crushed when the washer was pushed back.
In three of my last five 4C calls, that would have been the entire repair. I would rather you did that yourself and kept the money.
When it is genuinely the valve
If both taps are on, the screens are clean and the hoses are clear, and it still will not fill, then the inlet valve is the likely fault. That is a real part failure and it is what the other two turned out to be.
Worth knowing: on a Samsung the valve is one assembly handling both hot and cold. Sometimes only one side fails, so the machine will fill on warm but throw 4C on a cold-only cycle. If your washer works on some cycles and not others, that is a useful thing to mention when you book — it points at the valve before I even arrive.
What it costs
If it is a screen or a tap, it is a service call and you are done. A valve replacement generally falls in the $167 to $400 range with parts and labor. Either way you get a flat-rate number before I start, the service call comes off the repair, and labor is covered for six months.
Screens clean and still getting 4C? Request service online any time, or call or text (330) 915-7222.