Samsung washer 4C2: Hot and cold supply mismatch

Documentation checkedBy ErrHiveUpdated October 28, 2026

THE SHORT ANSWER

Hot and cold supply mismatch.

4C2 points to a hot/cold supply connection problem. Trace the hoses before considering an appliance repair.

First safe check

Compare the hot and cold faucet connections with the washer inlet labels.

Applies to

Samsung washer families covered by the cited US guidance. Match the full model number and exact display; this is not an exact-model compatibility claim.

Before you start

Keep hands clear of a moving drum. Do not force a locked door or work on live wiring. Stop if water reaches an electrical connection.

Go to safe checks

WHAT YOU MAY NOTICE

Symptoms to record

The washer displays 4C2.

WORK THROUGH THE BASICS

Safe troubleshooting checks

0 of 2 checked

Use the checkboxes to keep track as you read. Stop at any warning or step that does not match your appliance.

Trace both hoses
Turn off the supplies before correcting any swapped connections; use the installation instructions or an installer.
What to note
Cold feeds cold and hot feeds hot.
Recheck after correction
Once connections are secure and leak-free, retry the interrupted program.
What to note
The same temperature-supply code does not recur.

THE DETAILS MATTER

Scope & troubleshooting notes

How to interpret this result

A plumbing connection error and a failed temperature sensor are different claims. Confirm the hose routing first; an unexpected code after a verified installation needs model-specific support.

YOUR NEXT DECISION

When to stop and get help

Arrange Samsung service if the condition remains after the listed owner checks, or if damage prevents completing them safely.

Record what you see

Keep the full model number, exact displayed code, and your observations together for the next conversation.

Use the right support

Contact the manufacturer or a qualified appliance technician when the guide calls for service.

Samsung support

THE EVIDENCE

Sources & verification

Our explanations are editorial summaries of the documentation below. They do not replace the instructions for your exact appliance.

Samsung washing machine information and error codes
Samsung US · Manufacturer support · Checked Oct 28, 2026
4C; 5C; SUd; Ub; model-dependent dC — Samsung US washers; model-specific code variants exist
Water fill issues with Samsung washers
Samsung US · Manufacturer support · Checked Oct 28, 2026
No water; supply hoses; drain installation — Samsung US washing machines

ErrHive is an independent information resource, not an authorized representative of Samsung. Follow your appliance’s manual. Hazardous repairs belong with qualified professionals. Read our safety policy.