Match the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
Show stop conditions
- A hose, valve, or inlet connection is leaking
- The washer cannot be moved or accessed safely
- The household cold-water line remains hot and needs plumbing diagnosis
Likely causes
- The hot and cold inlet hoses are connected to the opposite washer inlets
- The household cold-water line is supplying unexpectedly hot water
- The inlet connections were changed during installation or recent plumbing work
- The exact model uses a related regional hot/cold supply code
Quick checks, in order
Stop the washer and check the inlet labels
Turn the washer off. Confirm the cold supply hose goes to the washer's cold inlet and the hot hose goes to the hot inlet.
Correct swapped hot and cold hoses
Close the water taps before changing hose connections. Match the appliance inlet markings rather than relying only on hose color.
Verify the cold tap actually runs cold
If the hoses are connected correctly, check the household supply. A plumbing crossover can send hot water to the cold line.
Use the model manual if 4C2 returns
Samsung states hot/cold errors are normally installation or supply issues. If the connections are correct and the code remains, confirm the exact model and regional guidance before further work.
What do the inlet connections show?
Reconnect them to the matching hot and cold inlets with the water supply shut off.
The household plumbing or mixing path needs attention rather than a washer part.
Confirm the full model number and Samsung's regional code table before assuming an internal fault.
Stop and get qualified help when
- A hose, valve, or inlet connection is leaking
- The washer cannot be moved or accessed safely
- The household cold-water line remains hot and needs plumbing diagnosis
Official support and model manuals
Use the full model number from the rating label. The manufacturer manual is the deciding reference when codes differ by region or product family.
Frequently asked questions
What does 4C2 mean on a Samsung washer?
On Samsung's current US guidance, 4C2 is a hot/cold supply error. The cold inlet is receiving water that is too hot, commonly because the hot and cold hoses are swapped.
Does Samsung 4C2 mean the heater is broken?
Not on Samsung's current US error-code guidance. It points first to the incoming hot/cold water connections, not to an internal heater failure.
Do I need service for Samsung 4C2?
Samsung says service is normally not required for a hot/cold connection error. Correct the hose or household supply issue first, then use model-specific support if the code remains.