Samsung Washer code **4Ed** is associated with **water temperature / hot-cold supply error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. A display code is evidence from the control system, not a component test result. That distinction matters because a connector, supply condition, obstruction, or feedback signal can mimic a failed component. The recorded display form is **4Ed**. Search normalization stores it as **4ED** 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 code4ED
ApplianceWasher
Quick answer
Water temperature / hot-cold supply error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 4ED 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 **4Ed** is associated with **water temperature / hot-cold supply error**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. A display code is evidence from the control system, not a component test result. That distinction matters because a connector, supply condition, obstruction, or feedback signal can mimic a failed component. The recorded display form is **4Ed**. Search normalization stores it as **4ED** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
While 4Ed is active, the appliance can stop or limit the affected function when the code is detected.
One clue that supports the 4Ed diagnosis is that the same code can return at a repeatable stage of operation.
On affected Samsung washing machine models, other symptoms depend on the model and the subsystem named by Samsung.
Depending on the exact model, 4Ed appears during the washer stage associated with water temperature / hot-cold supply error.
The 4Ed display becomes more meaningful if the cycle may 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.
As an external check for 4Ed, record the exact code, model number, and operating stage before resetting power.
To rule out an accessible cause, complete only the owner-accessible checks described in the model manual.
With 4Ed recorded, do not replace parts solely from a display code when wiring, conditions, or control feedback can create the same result.
Before opening any service area, 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.
As an external check for 4Ed, power-cycle once only where Samsung's guidance recommends it; if the same code returns, move to model-specific diagnosis.
Important safety warning. When working around a washing machine that shows 4Ed, keep the checks external and non-invasive. Disconnect power and stop use for active leakage near electrical parts, smoke, burning smell, or repeated breaker trips.
Get help
When to request repair service
For 4Ed, the service threshold is straightforward: If the code returns after the documented basic checks, request model-specific diagnosis of the affected subsystem. 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.
Resetting can clear a temporary state, not a persistent issue. If **4Ed** comes back, preserve the code and move to the safe checks or model-specific service path.
That depends on the accompanying symptom. A code with no safety hazard may allow a short diagnostic check, but **4Ed** should not be ignored if performance is deteriorating or the display keeps returning.
The code alone is not enough to justify a part. **4Ed** 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 4Ed** separate from same-looking codes used by other Samsung appliance families.
