A Samsung DV42H5000 that turns but does not heat has a no-heat fault whose cause depends on whether the dryer is electric or gas, and the first job is to read the suffix on the label inside the door. This entry-tier dryer came in two versions: the DV42H5000EW is electric, and the DV42H5000GW is gas. The two heat in different ways, so their faults differ, and the airflow checks apply to both. Start with airflow on either version.
The checks in more detail
Clean the lint screen, which should be done every load, and look into the lint housing; then check the exhaust duct and the outside hood for lint, a crushed hose or a stuck flap. A blocked vent makes the dryer overheat, and the overheat protection opens and cuts the heat. This is the commonest reason a dryer stops heating, and it is worth fixing before anything else because a new part will fail again behind a blocked vent.
For the electric version, go to the breaker panel. An electric dryer uses a double breaker for its 240 volts; one half can trip while the other stays on, which leaves the drum turning with no heat. Switch the double breaker fully off and then on. If heat is still missing, the heating element, the thermal fuse or the thermostat is the likely cause. These are tested with a meter with the dryer unplugged, and the parts are routine repairs.
For the gas version, the heat depends on gas ignition: the igniter, the gas valve coils and the flame sensor must all work, and the gas supply must be on. A gas dryer is on a 120 volt plug, so a breaker is not the cause. If you smell gas, leave the house and call the gas company. Gas repairs should be done by a qualified technician, and Samsung service can help with DV42H5000EW or DV42H5000GW and the serial number from the label.
Differential
Likely causes of “Samsung DV42H5000 dryer runs but does not heat”, and how to tell them apart
- 1
A blocked vent or lint screen
What separates it The dryer overheats and loses heat
How to confirm Clean the lint screen and duct
- 2
Half of the double breaker tripped (electric)
What separates it The drum turns with no heat
How to confirm Reset the breaker fully
- 3
A failed element or open thermal fuse (electric)
What separates it Heat is missing after the breaker is reset
How to confirm Test with a meter
- 4
A failed igniter, valve coil or flame sensor (gas)
What separates it The drum turns and the gas never lights
How to confirm Qualified technician
- 5
No gas supply (gas)
What separates it Nothing lights
How to confirm Check the gas shut-off valve
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the model is EW or GW
- Whether the drum turns
- Whether the breaker is fully on
- Whether the vent is clear
Try in this order
0 of 6 completedRead the suffix
ReversibleEW or GW.
Clean the lint screen
ReversibleAnd the duct.
Reset the breaker
ReversibleElectric only.
Test element and fuse
ReversibleElectric, unplugged.
Check the gas valve
ReversibleGas, and call a technician.
Quote the model
ReversibleWith the serial number.
Model-specific
What is true of this model and not of its siblings
- Two versions
- Electric and gas heat differently.
- The vent
- A blocked vent trips the overheat protection.
- The breaker
- A half-tripped double breaker leaves no heat.
- Gas safety
- Gas faults belong with qualified technicians.
- The fuse
- Replace it only after clearing the vent.
- Samsung help
- Quote the full model with the suffix.
- Parts for this problem on the DV42H5000 (RepairClinic, 2026-09-21)
- burner tube, part number DC97-07602C, at $167.29; dryer gas valve, part number DC62-00201A, at $257.90.
Stop boundary
When this stops being a self-service repair
- !If you smell gas, leave the house and call the gas company
- !Unplug an electric dryer before opening any panel
- !Do not bypass the thermal fuse
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Why does my dryer turn but not heat?+
A tripped breaker half, an element or fuse, or gas ignition.
Is mine electric or gas?+
The suffix tells you.
Can a blocked vent stop the heat?+
Yes, via the overheat protection.
Is a gas fault a do-it-yourself job?+
No.
What do I do if I smell gas?+
Leave and call the gas company.