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Samsung Washer 4C2 Error Code: Causes and Fixes

Quick answer: On a Samsung Washer, the 4C2 error code means the hot water supply has a problem — specifically, the hot water inlet is not filling correctly or the hot water temperature is incorrect. Samsung Washer 4C2 is the hot water supply fault variant of the main 4C code. It occurs when the washer is connected to both hot and cold water supplies (as required for some wash programs) but the hot water line is closed, kinked, or delivering water at the wrong temperature.

Quick Fix for Samsung Washer 4C2

Check that the hot water supply valve at the wall is fully open.
Inspect the hot water inlet hose for kinks or blockages.
Clean the hot water inlet filter mesh (where the hose connects to the machine).
Verify that the hot water temperature at the tap is within the normal range — excessively cold water on the hot line can trigger 4C2.
Restart the cycle after checking these items.

Common Causes of Samsung Washer 4C2

Closed hot water supply valve: The hot water shutoff valve at the wall is turned off or partially closed.
Kinked or blocked hot water inlet hose: The hot water hose is bent or obstructed.
Clogged hot water inlet filter: The mesh filter inside the hot water inlet port is blocked with scale or sediment.
Cold water on the hot line: If the temperature of the water entering the hot inlet is too low, the machine may display 4C2.
Hot water inlet valve failure: The internal solenoid valve for the hot water supply has failed.