4C2 Samsung washing machine error 4C2 — hot and cold hoses swapped

What it means

If your Samsung washing machine shows 4C2: very hot water is coming in through the cold water inlet — usually the hot and cold hoses are connected to the wrong taps. The machine stops to protect the laundry.

Likely causes

Hot and cold inlet hoses swapped (often after plumbing work or a move), very hot water in the cold supply line.

Full guide to this fault: Washing machine not filling with water: causes and what to do

Safe steps you can try

Close both taps, check which hose goes to which tap and connect them correctly: cold inlet to the cold tap, hot inlet to the hot tap. A single-inlet machine goes on cold water only. Then restart the cycle.

When to call a technician

If the hoses are connected correctly and the error persists, the inlet valve and temperature sensor need checking.