Samsung Washing Machine 4C Error: Water Intake Issues & Step-by-Step Troubleshooting

2026-11-01

What Is the Samsung Washing Machine 4C Error?

The 4C error code is a common technical alert on Samsung washing machines indicating an issue with water intake. If the water required to start the wash cycle fails to reach the drum, the control panel triggers this code. While frustrating, this is usually a simple problem that can be resolved with basic troubleshooting.

What Causes the 4C Error?

There are several reasons for this error code. Generally, any blockage or lack of pressure preventing water from reaching the machine can trigger the 4C alert. Here are the most common causes:

• The water inlet tap is closed or the water pressure is insufficient.
• The water inlet filter is clogged with limescale or sediment.
• The water inlet hose is kinked, folded, or crushed.
• A temporary water outage in the building’s supply system.
• An electrical or mechanical fault in the water inlet valve (solenoid valve).

Step-by-Step Solutions for the 4C Error Code

Before calling a technician, try these practical methods to resolve the issue yourself. Follow the steps below to troubleshoot the problem:

1. Check the Water Taps

First, ensure the water inlet taps behind the machine are fully open. Taps are sometimes accidentally closed during cleaning or maintenance. You can also open the tap into a container to check the flow rate and pressure. If the water flow is weak, the issue likely stems from your building’s water supply system.

2. Inspect the Water Inlet Hose

Check the hose between the machine and the tap for any kinks, folds, or spots where it might be pinched by other objects. Ensure the hose is lying straight and that nothing is obstructing the water flow.

3. Clean the Water Inlet Filter

The most frequent cause of the 4C error is sediment buildup in the inlet filter. Over time, limescale and sand particles from the water supply clog this small mesh. Follow these steps to clean it:

• Unplug the machine and turn off the water tap.
• Unscrew the water inlet hose from the back of the machine by turning it counter-clockwise.
• Gently pull the plastic filter from the hose inlet using pliers.
• Clean the filter with a toothbrush and a bit of vinegar or a descaling agent.
• Reattach the cleaned filter and hose, then turn the water tap back on.

4. Check the Power Connection and Valve

If the error persists after the above steps, the inlet valve (solenoid valve) may have a burnt coil or an internal blockage. This is an electromechanical valve that controls water intake. If faulty, the machine cannot take in water and will continue to display the 4C code. In this case, professional technical support is required.

When Should You Call a Technician?

If the 4C code remains on your screen after basic cleaning and checks, you likely have an issue with the electronic control board or the valve. Unauthorized repairs can void your warranty or lead to significant problems like water leaks. Therefore, if the error code is persistent, the best solution is to contact an expert technician.

At Errora.com, we continue to provide practical tips to extend the life of your appliances. Browse our other blog posts for similar error codes, repair guides, and more laundry care tips.