Samsung Washer code **4C** is associated with **water supply / fill error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. The useful diagnostic value of the code is the subsystem it identifies. A good repair process confirms the symptom, checks the accessible external conditions, and then follows the model-specific circuit only if the display returns. The recorded display form is **4C**. Search normalization stores it as **4C** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error code4C
ApplianceWasher
Quick answer
Water supply / fill error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 4C may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Samsung Washer code **4C** is associated with **water supply / fill error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. The useful diagnostic value of the code is the subsystem it identifies. A good repair process confirms the symptom, checks the accessible external conditions, and then follows the model-specific circuit only if the display returns. The recorded display form is **4C**. Search normalization stores it as **4C** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
One clue that supports the 4C diagnosis is that the appliance may receive too little water or fail to confirm the expected water level.
4C can be accompanied by this pattern: the code often appears near the beginning of a fill stage.
One clue that supports the 4C diagnosis is that water may enter slowly, intermittently, or not at all.
A symptom that fits 4C is that 4C appears during the washer stage associated with water supply / fill error.
One clue that supports the 4C diagnosis is that the cycle can pause, stop, retry, drain, or refuse to advance until the condition is cleared.
Why it happens
Possible causes
varies by model/region — cross-region baseline — Water supply / fill error
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
To rule out an accessible cause, confirm the household water supply valve is fully open where the appliance uses one.
For 4C, start by doing this: verify accessible supply hoses for kinks and clean inlet screens only as described by Samsung.
To rule out an accessible cause, check whether water actually enters before the code appears.
Before requesting service for 4C, verify hot/cold hose routing and water pressure when relevant to the exact appliance.
To rule out an accessible cause, record the code and the cycle stage where it appears.
The next non-invasive check is to verify owner-accessible water supply, drain hose/filter, load balance, door, detergent, or power only when relevant.
Important safety warning. Disconnect power and stop use for active leakage near electrical parts, smoke, burning smell, or repeated breaker trips. If resolving 4C would require energized internal access, that is the point to hand the diagnosis to a qualified technician.
Get help
When to request repair service
For 4C, the service threshold is straightforward: If supply flow is proven good and the display returns, inlet valves, flow/level sensing, wiring, or control electronics may require diagnosis. Bring the exact model number and a photo of the display so the diagnosis stays tied to the documented Samsung code.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
A single documented power reset can help after an external condition or power event is corrected. If **4C** returns at the same stage, repeated resets only erase useful evidence and do not repair the cause.
That depends on the accompanying symptom. A code with no safety hazard may allow a short diagnostic check, but **4C** should not be ignored if performance is deteriorating or the display keeps returning.
Not automatically. Samsung error codes are diagnostic indicators, not part numbers. Confirm the circuit around **4C** before replacing anything.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Washer 4C** separate from same-looking codes used by other Samsung appliance families.