For the Samsung Washer families covered by the source set, **4C2** means **water temperature / hot-cold supply error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **4C2**. Search normalization stores it as **4C2** 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 code4C2
ApplianceWasher
Quick answer
Water temperature / hot-cold supply error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 4C2 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
For the Samsung Washer families covered by the source set, **4C2** means **water temperature / hot-cold supply error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **4C2**. Search normalization stores it as **4C2** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
Depending on the exact model, the appliance can stop or limit the affected function when the code is detected.
4C2 can be accompanied by this pattern: the same code may return at a repeatable stage of operation.
While 4C2 is active, other symptoms depend on the model and the subsystem named by Samsung.
On affected Samsung washing machine models, 4C2 appears during the washer stage associated with water temperature / hot-cold supply error.
One clue that supports the 4C2 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 temperature / hot-cold supply 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.
Before opening any service area, record the exact code, model number, and operating stage before resetting power.
For 4C2, start by doing this: complete only the owner-accessible checks described in the model manual.
As an external check for 4C2, do not replace parts solely from a display code when wiring, conditions, or control feedback can create the same result.
With 4C2 recorded, record the code and the cycle stage where it appears.
To rule out an accessible cause, verify owner-accessible water supply, drain hose/filter, load balance, door, detergent, or power only when relevant.
The next non-invasive check is to power-cycle once only where Samsung's guidance recommends it; if the same code reappears, move to model-specific diagnosis.
Important safety warning. Disconnect power and stop use for active leakage near electrical parts, smoke, burning smell, or repeated breaker trips. Do not bypass a safety device merely to see whether 4C2 disappears.
Get help
When to request repair service
If the code returns after the documented basic checks, request model-specific diagnosis of the affected subsystem. If 4C2 keeps returning, record the stage at which it reappears so the technician can test the water temperature / hot-cold supply error path instead of replacing parts by guesswork.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You can try the one reset Samsung documents for the model, but **4C2** returning afterward means the condition still exists. Note the operating stage instead of cycling power repeatedly.
Do not keep operating the appliance through a hazardous symptom just to see whether **4C2** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
The code alone is not enough to justify a part. **4C2** should narrow testing to the affected function; the final cause still has to be verified on the exact model.
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 4C2** separate from same-looking codes used by other Samsung appliance families.
