Samsung uses 4C2 or 4E2 when the hot and cold water supplies may be connected incorrectly or incoming water is too hot.
What 4C2 / 4E2 means
Samsung uses 4C2 or 4E2 when the hot and cold water supplies may be connected incorrectly or incoming water is too hot.
What you may notice
- The display or status light shows 4C2 / 4E2
- The cycle pauses near the beginning
- Little or no water enters
- The inlet may hum
Most likely causes
- 01A supply valve is closed
- 02A fill hose is kinked
- 03An inlet screen is restricted
- 04Household water pressure is low
- 05An inlet valve or level sensor needs service
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Check both supplies
Confirm the hot and cold valves are fully open and nearby fixtures have normal flow.
Inspect the hoses
Straighten kinks and verify the hoses are connected to the correct inlets.
Check user-accessible screens
Turn off water and power before inspecting inlet screens for sediment.
Test once
Reconnect carefully, watch for leaks, and try a short empty cycle.
Know where to stop
Unplug the appliance and close the water valves before disconnecting a hose. Stop immediately if a fitting leaks.
When to call a technician or support
Request service if household flow is normal, the screens are clear, and the warning returns.
When you call, have the exact product model, the complete code or light pattern, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
Samsung Support — washing machine error codes Source last checked August 18, 2026. Manufacturer instructions and model manuals take priority over this independent summary.