Direct answer
For the Samsung DV42H5000 dryer, stop the dryer until lint, airflow, foreign material and electrical or belt overheating are separated. First, cancel, unplug and inspect the lint screen, visible drum and exterior vent.
What this covers
- Samsung DV42H5000 dryer (DV42H5000*)
- Samsung dryer; the DV-prefix model number alone does not state electric versus gas — check the rating plate or full model suffix before applying either supply's diagnosis.
- The specific fault this record addresses: smells hot, scorched or like burning
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
Lint or a foreign fabric item has contacted the heating element or burner
What separates it A distinct smell of burning dust or fabric, typically at the start of a cycle as things heat up, without smoke or an electrical/plastic odor.
How to confirm Cancel and inspect the lint screen and accessible drum interior with the dryer unplugged and cool.
- 2
A foreign object melted against a hot surface
What separates it A plastic or chemical burning smell rather than a dusty/fabric one, sometimes traced to a specific item like a lighter or a piece of plastic packaging left in a pocket.
How to confirm Inspect the drum for melted residue once cool.
- 3
An electrical component is overheating
What separates it A sharp, acrid smell distinct from either fabric or melted plastic, sometimes accompanied by a faint haze, warm plug, or the smell being present even when the dryer is not actively heating.
How to confirm This is the one presentation that should stop use entirely and go to a technician rather than being diagnosed further by inspection.
- 4
Restricted airflow is causing genuine overheating
What separates it The smell accompanies unusually hot exterior surfaces, a longer-than-normal cycle, or coincides with a thermal fuse tripping.
How to confirm Overlaps with the takes-too-long and not-heating vent-restriction causes — check the full exhaust path once the immediate smell is addressed and the unit is confirmed safe to run again.
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 — dusty/fabric, melted plastic, or sharp/electrical — since each points to a different cause and a different urgency level.
- Whether any smoke, haze or visible melted material is present, not just a smell.
- Whether the smell is present only during heating, or also when the dryer is off or merely tumbling.
Cancel the cycle and unplug immediately
ReversibleDo this before any inspection, regardless of which type of smell is present.
Once cool, inspect the lint screen, visible drum interior and any melted residue
ReversibleIdentify fabric/dust odor and foreign-object melting as the lower-urgency causes.
Do not resume use if the smell was sharp, electrical or accompanied by haze
ReversibleThis calls for a technician inspection before the dryer runs again at all.
Check and clear the full exhaust path once the immediate cause is addressed
ReversibleRestricted airflow contributing to overheating needs correcting before returning to normal heated use.
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
- DV42H5000*. Samsung dryer; the DV-prefix model number alone does not state electric versus gas — check the rating plate or full model suffix before applying either supply's diagnosis.
- Fuel — confirm ELECTRIC or GAS
- This entry series came in electric (DV42H5000EW) and gas (DV42H5000GW) — check the suffix. Electric no-heat = element/240V half-breaker/thermal fuse; gas no-heat = igniter/valve coils/flame sensor/gas supply.
- Venting
- A vented dryer — clogged lint screen or blocked duct causes long drying and overheating. Clean both regularly.
- Feature tier
- An older entry Samsung dryer with Sensor Dry; typically no Wi-Fi, so a long cycle is airflow or a mixed load, not a smart feature.
- Symptom boundary
- This record covers Samsung DV42H5000 dryer when it smells hot, scorched or like burning. 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.
- !Any visible smoke or flame: keep the dryer off, do not open the door if flame is visible inside, and call emergency services immediately.
- !A sharp electrical or acrid smell, especially with haze or a warm plug, means do not resume use until a technician has inspected it.
- !Gas-model burning smell accompanied by any gas odor: leave the area, do not operate switches, 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 DV42H5000* 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
My older Samsung DV42H5000 isn't drying well.+
Start with airflow regardless of fuel: clean the lint screen every load and clear the exhaust duct — a blocked vent is the top cause of poor drying on any vented dryer. If there is no heat at all, check whether yours is electric or gas: electric points to a half-tripped 240V breaker or the element, gas to the igniter and valve. Cleaning the moisture-sensor bars also helps if Sensor Dry is ending cycles early.
There's a burning smell but I don't see smoke — is it safe to keep running?+
It depends entirely on the type of smell. A dusty or fabric smell after cleaning the lint screen is usually fine to continue cautiously. A sharp, acrid or electrical smell — even with no smoke — means stop and have it inspected before running it again.
Does this answer apply to every Samsung model?+
No. It is scoped to DV42H5000*. Samsung dryer; the DV-prefix model number alone does not state electric versus gas — check the rating plate or full model suffix before applying either supply's diagnosis.
What should I record before troubleshooting burning smell or hot?+
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 burning smell, hot. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
Keep the dryer off and call emergency services for smoke or fire; gas odor requires evacuation and the gas utility.
Answer for the exact device and software version shown above.