Direct answer
For the Samsung Flex Duo NE63T8751 electric range, new-appliance curing, food residue, foil, grease and electrical/gas faults require different action. First, turn off heat and identify food/grease smoke versus electrical or gas odor.
What this covers
- Samsung Flex Duo NE63T8751 electric range (NE63T8751S*)
- Samsung range/oven; gas, electric, induction, Flex Duo and SmartThings equipment vary.
- The specific fault this record addresses: smokes or smells during use
What it does not cover
- ×The same symptom on a different Samsung product line, which has its own record and its own cited source
- ×An on-screen error code whose meaning has not been checked against this exact model's manual
- ×Live electrical, gas, sealed-system, internal battery-cell or structural repair — a technician boundary, not a self-service step
Differential
What actually causes this, and how to tell them apart
These are ordered by how often each one is the answer, not by how easy it is to try. The point of the middle column is that two causes producing the same headline symptom rarely produce the same detail — that detail is what tells you which one you have before you change anything.
- 1
A new range is curing its factory protective coating
What separates it A distinct smell, sometimes with light smoke, occurring only in the first few uses of a brand-new range.
How to confirm Run a short, ventilated empty bake cycle per the manufacturer's break-in guidance — this typically resolves within the first few uses.
- 2
Food residue, grease or foil is burning off
What separates it A cooking-related smell tracing to visible spills, grease buildup, or foil accidentally left in contact with a heating surface.
How to confirm Turn off heat, let cool, and inspect for and remove the specific residue or foil.
- 3
An electrical component is overheating
What separates it A sharp, acrid smell distinct from food or new-appliance odor, possibly present even without active cooking.
How to confirm This calls for stopping use and having it inspected rather than continued troubleshooting by smell alone.
- 4
A gas leak or incomplete combustion
What separates it A gas-specific odor, or smoke and a smell that appears specifically when gas burners or the gas oven are in use.
How to confirm Any suspicion of a gas smell overrides all other troubleshooting — treat it as an emergency, not a diagnostic puzzle.
Before you touch a setting
Record this first — changing settings destroys the evidence
Every item below stops existing the moment a reset, re-pair or settings change is made. Written down first, they are what separates the causes above; recovered afterwards, they are guesswork.
- The precise character of the smell — new-appliance curing, food/grease, sharp electrical, or gas — since each has a different urgency.
- Whether the smell/smoke is present only during active cooking, or also when the appliance is off.
- Whether the range is new, or this is a sudden change on a range that's been in use for a while.
Turn off heat immediately and identify the smell's character
ReversibleDistinguish food/grease from electrical or gas before any further action.
Inspect the cooled oven and cooktop for spills, foil or grease residue
ReversibleClean by the approved method for visible causes.
For a new range, run the manufacturer's documented break-in cycle with ventilation
ReversibleResolves curing-coating odor, typically within the first few uses.
Do not resume use for an electrical or gas odor until the cause is professionally identified
ReversibleThis is not a self-diagnosable category.
Model-specific
What is true of this model and not of its siblings
Generic advice for the product line fails here. Each item below is a property of this specific model family that changes which of the steps above apply to you.
- Model scope
- NE63T8751S*. Samsung range/oven; gas, electric, induction, Flex Duo and SmartThings equipment vary.
- Cooktop — ELECTRIC radiant smoothtop
- A radiant ELECTRIC smoothtop — elements heat any flat pan by contact and stay hot after use (residual-heat indicator). A burner not heating is the element/control, not cookware.
- Oven — Flex Duo (splits into two)
- The Flex Duo oven has a removable Smart Divider that turns one large oven into two independent zones at different temperatures. A 'top and bottom cook at different temps' or 'only half heats' can be the divider in place and each zone set separately — check whether Flex Duo mode is on and where the divider is before treating it as a fault.
- Self-clean & features
- Steam/high-heat self-clean (door locks, some smoke normal), Air Fry, SmartThings Wi-Fi.
- Symptom boundary
- This record covers Samsung Flex Duo NE63T8751 electric range when it smokes or smells during use. A different symptom on the same hardware, or this symptom on a different Samsung product line, has its own record with its own causes and its own cited source.
Stop boundary
When this stops being a self-service repair
Continuing past any one of these costs more than the repair saves — in safety, in warranty, or in evidence a technician needs.
- !For fire: turn off heat, keep the door closed if it's contained inside the oven, and call emergency services immediately.
- !Any gas odor: leave the area, do not operate any switch, and call the gas utility or emergency services from outside.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Where the manufacturer's article stops. Samsung Support publishes this as "Samsung washing machine information and error codes". Samsung's own washer troubleshooting and error-code article; covers filling, draining, spin and unbalanced-load conditions. What that article does not carry is the model boundary — it is written for a product line, and NE63T8751S* is the scope applied here. Where a control label, terminal, indicator pattern or reset sequence differs on your unit, the manual for that exact model is the authority, not this page and not the article.
Exact questions
Common follow-ups
Only half my Samsung NE63T8751 oven is heating.+
That is likely Flex Duo doing exactly what it is designed to. With the Smart Divider installed and Flex Duo mode on, the oven splits into an upper and lower zone that run at different temperatures independently — so one zone can be off or cooler while the other cooks. Remove the divider and select the full-oven mode to use it as one large oven. Check the divider and mode before assuming a heating fault.
My brand-new range smells and smokes a little when I first use it.+
This is normal for many new ranges — it's the factory protective coating curing off, and it typically clears within the first few uses. Run it ventilated per the manufacturer's break-in guidance rather than assuming a fault.
There's a sharp smell that isn't like food, even when nothing's cooking.+
That character of smell — not food-related, present even without active cooking — is exactly the case to stop using the range and have it inspected rather than continuing to troubleshoot by smell.
Does this answer apply to every Samsung model?+
No. It is scoped to NE63T8751S*. Samsung range/oven; gas, electric, induction, Flex Duo and SmartThings equipment vary.
What should I record before troubleshooting smoke or odor?+
Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.
Why is a factory reset not the first step?+
A reset can erase accounts, networks, maps, schedules or preferences without distinguishing smoke, odor. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
For fire, turn off heat, keep the door closed and call emergency services; leave for strong gas odor.
Answer for the exact device and software version shown above.