Samsung Washing Machine Error Code 4C
Water supply not detected
Your Samsung washer cannot sense adequate water pressure from the supply lines. The machine detects insufficient water flow when attempting to fill. This is one of the most common Samsung washer errors and is usually caused by a simple supply issue rather than a hardware failure.
What Does Error Code 4C Mean on a Samsung Washing Machine?
Water supply not detected.
Your Samsung washer cannot sense adequate water pressure from the supply lines. The machine detects insufficient water flow when attempting to fill. This is one of the most common Samsung washer errors and is usually caused by a simple supply issue rather than a hardware failure.
What Causes Error Code 4C?
Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:
- 1 Water supply valve partially or fully closed 40% of cases
- 2 Kinked, pinched, or clogged inlet hose 30% of cases
- 3 Low water pressure from home supply (below 20 psi) 20% of cases
- 4 Faulty water inlet valve not opening fully 10% of cases
How to Fix Samsung Washing Machine Error Code 4C
- 1
Check the water supply valves
Locate the hot and cold water supply valves behind the washer. Turn both fully counterclockwise (open). Even a slightly closed valve can trigger a 4C error.
- 2
Inspect the inlet hoses
Pull the washer out and check both inlet hoses for kinks or bends. Straighten any kinks. Also check the mesh screens inside the hose connections — clean them if clogged with sediment.
🔩 Inlet hose screen filter - 3
Check home water pressure
Run a tap nearby. If pressure is low throughout the home, the issue is your supply, not the washer. Low pressure (below 20 psi) will trigger 4C.
- 4
Test and replace the water inlet valve
If all above checks pass, the water inlet valve solenoid may be stuck. Test continuity with a multimeter. Replace if no continuity reading.
🔩 Samsung water inlet valve ($25–$60)⚠️ Unplug the washer before accessing the inlet valve.
How to Reset Error Code 4C
Turn the washer off and back on. If the water supply issue is fixed, the code should clear. Alternatively, press and hold the Start/Pause button for 5 seconds to reset mid-cycle.
Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.
When to Call a Professional
Call a technician if you have confirmed water supply is good (pressure OK, valves open, hoses clear) but the error persists — the control board or water inlet valve needs professional diagnosis.
Related Error Codes
Find Replacement Parts
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