Samsung Washing Machine 4C2 error code

The water entering the washer is too hot - over about 50 C (122 F). This usually means the hot and cold supply hoses are swapped, so the 'cold' fill is actually hot water.

Also shown as: 4C2, 4E2, nF1

Last updated: October 6, 2026

Quick answer: Samsung washing machine error code 4C2: incoming water too hot. The most common cause is hot and cold supply hoses connected to the wrong inlets. Try this first — swap the hoses to the correct inlets. If that does not clear it, check your water heater setting.

What causes the 4C2 error?

  • Hot and cold supply hoses connected to the wrong inlets
  • Water heater set extremely high
  • Thermistor misreading water temperature
  • Failed water inlet valve letting hot water dominate
  • Failed main control board

How to fix Samsung 4C2 — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Swap the hoses to the correct inlets
    Turn off both water taps, disconnect the hoses at the back of the washer, and reconnect cold supply to the cold inlet (blue) and hot supply to the hot inlet (red). This is the fix in the large majority of 4C2 cases.
    Safety warning: Turn both water taps off before disconnecting hoses to avoid flooding.
  2. Check your water heater setting
    If the hoses are correct, check that the water heater is not set absurdly high. Very hot supply water alone can trip 4C2 on temperature-sensitive cycles like Wool or Delicates.
    Safety warning: Water above 50 C / 122 F scalds - keep the heater at a safe setting.
  3. Power-cycle the washer
    Unplug the washer or flip its breaker for 1 minute after correcting the hoses, then run a test cycle. The code should not return once the temperature is normal.
  4. Run a rinse to flush hot water
    After fixing the connections, run a rinse-only cycle to flush residual hot water from the hoses and valve before doing laundry.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • 4C2 persists with hoses correctly connected
  • The thermistor needs testing or replacement
  • The water inlet valve is faulty
  • The main control board is misreading temperature

Frequently asked questions

Why does 4C2 appear on Delicates but not on other cycles?

Delicate and Wool cycles monitor incoming temperature closely to protect fabrics. Hot water that other cycles tolerate trips the protection on these cycles first.

The hoses look correct but 4C2 persists. What now?

Then the thermistor or inlet valve may be faulty - the washer thinks the water is hot when it is not, or the valve is mixing wrong. That needs a technician.

Can 4C2 damage my clothes?

That is exactly what the code prevents. Hot water on a cold/delicate cycle shrinks and fades fabrics, so the washer stops rather than risk it.

Sources

Every meaning and fix above was checked against official manufacturer documentation:

FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.

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