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4CSamsung Dishwasher

Samsung Dishwasher Error 4C – Meaning, Causes & How to Fix

Water supply error – the dishwasher is not receiving water or the fill rate is too slow.

Medium Severity
Low
Medium
High
Critical

Expert Verified

Reviewed by a Certified Electrical Engineer & Licensed Technician

Official Meaning

Water supply error – the dishwasher is not receiving water or the fill rate is too slow. The machine cannot reach the required water level within the allotted time.

Real-World Causes

  • 1Water supply valve under the sink is not fully open or has been turned off
  • 2Inlet hose is kinked or compressed behind or under the dishwasher
  • 3Inlet valve filter screen is clogged with sediment or mineral deposits
  • 4Water inlet valve solenoid has failed and will not open
  • 5Low water pressure in the home plumbing system
  • 6Anti-flood device (aquastop) on the inlet hose has triggered

Symptoms

Look for these signs to confirm error 4C on your Samsung Dishwasher:

  • 4C error displayed on the control panel during fill cycle
  • Dishwasher does not start washing – pauses during the fill phase
  • Clicking noise from the inlet valve area under the front of the machine
  • Very little water visible at the bottom of the tub when door is opened
  • Error appears at the start of the cycle or during a mid-cycle rinse fill

DIY Fix (Safe)

  1. 1Check that the water supply valve under the sink is fully open – turn counterclockwise to ensure it is fully on
  2. 2Inspect the inlet hose for kinks – pull the dishwasher forward slightly to straighten the hose if needed
  3. 3Turn off the water supply, disconnect the inlet hose from the dishwasher, and clean the mesh filter screen inside the valve inlet
  4. 4If equipped with an aquastop hose, check if the indicator window shows red (triggered) – replace the hose if triggered
  5. 5Run the kitchen faucet to verify water pressure and flow are normal before restarting the dishwasher

Professional Action Required

  1. 1Test the water inlet valve solenoid for resistance (typically 500-1500 ohms) – replace if out of range
  2. 2Inspect the flow meter (turbine sensor) if equipped – a stuck flow meter can cause false low-fill readings
  3. 3Check the main control board for the fill valve relay – replace if contacts are burnt
  4. 4If the aquastop system has triggered, inspect the dishwasher base for leaks before replacing the hose
  5. 5Verify the fill drain check valve is not stuck open, allowing water to siphon out during fill

Additional Context

Load Type
Any – water supply issues are load independent
Drain Related
false
Sensor Issues
Flow meter or water level sensor can cause false 4C if malfunctioning

Frequently Asked Questions

What does Samsung Dishwasher error 4C mean?
Error 4C means your Samsung dishwasher is not receiving enough water. Check that the supply valve under the sink is open, the hose is not kinked, and clean the inlet filter screen. These simple checks resolve most 4C errors.

Related Error Codes

Other Samsung Dishwasher Errors

5CDrain error – the dishwasher is unable to pump water out within the expected time
LCLeak detected – the dishwasher's leak sensor in the base pan has detected the presence of water, indicating a potential leak in the system
OCOver-level water error – the dishwasher has detected that the water level inside the tub is higher than expected, indicating a fill valve that won't shut off or drain that is too slow
tETemperature sensor error – the dishwasher's water temperature sensor is not responding or is returning readings outside the acceptable range

About the Author

Technical Review Team

Reviewed by certified appliance technicians with 10+ years of Samsung repair experience. Every error code is verified against manufacturer service manuals and real-world repair data.