The documented DV45H7000EW/A2 Child Lock action is to hold Temp. and Time together for 3 seconds. With the lock active, Power still works while the other buttons are disabled. Turning the dryer off and on does not itself remove the lock.
Models covered
DV45H7000EW/A2 and the matching Temp./Time panel legend. Stop and consult the supplied manual if the control labels differ. EcoDry applicability was not verified for this model and is not assumed.
Stop for smoke, burning smells, abnormal heat or repeated breaker trips. Let the dryer cool before cleaning. Do not expose wiring, bypass interlocks or work on gas components. If gas is smelled, leave and call the utility or emergency services from a safe location.
Compare the behavior
Match the documented control, cycle or feature before interpreting the result. The comparison below keeps normal model behavior separate from an unresolved fault.
| Observed state | Interpretation / next step |
|---|---|
| Power works, lock indicator on | Use Temp. + Time hold for the matching panel. |
| Lock clears but one option unavailable | Check cycle compatibility. |
| Panel completely dead | Use a power diagnosis rather than lock instructions. |
Model-specific checks
Identify locked controls
A lit lock indication with a responsive Power button fits the documented lock state. A completely dead panel is a different problem; do not keep pressing a button combination to diagnose absent power.
Use the model’s labeled hold
With the normal panel powered, hold Temp. and Time together for the documented 3 seconds. Confirm that the lock indication changes before choosing a cycle. A brief tap is not the same gesture.
Separate a disabled option from a fault
Some selections are unavailable in particular cycles. If the lock clears but an option remains unavailable, compare the cycle table before inferring a failed button. If normal controls still do not respond, arrange service with the full suffix and panel photo.
What to record next
The short press-versus-hold distinction and the fact that power cycling does not cancel this setting provide the model-specific answer. Random reset folklore can obscure it. A correct gesture that fails to change the lock indication is useful service evidence, but does not identify a failed circuit board.
When to stop and get help
Only carry out maintenance permitted in your model’s manual. For service, note the full model number and suffix, displayed code, selected cycle and what happened during the checks. Leave internal wiring, gas components, pumps and safety devices to a qualified professional. A symptom alone does not identify a failed part.
Sources & references
- Hold Temp. + Time for 3 seconds; Power remains usable; power cycling does not cancel lock. Child Lock section, English p26 (pagination differs by revision)
- Samsung: DV45H7000EW/A2 exact model support
- Samsung-authored manual, Lowe’s-hosted PDF
- Samsung: dryer controls not responding
Based on publicly available manuals, manufacturer support and the references listed here. We have not inspected or tested your appliance. Follow the instructions for your exact model; a guide cannot replace an in-person diagnosis.