The short answer
When a DHP cycle stops after a few minutes or refuses to finish, the useful split is between a machine that thinks the load is dry and a machine that cannot move enough air to get it dry. Those two go in opposite directions and this page separates them.
What you observe
- Timed cycles work, automatic cycles do not — Close to diagnostic: the sensing path is at fault and the heating path is fine.
- Clothes hot on the outside and damp inside — Restricted airflow: the machine is making heat it cannot carry away.
- Cycle ends after a few minutes with wet clothes — The control believes the load is dry, which points at the moisture sensor or at a very small load.
- Cycle runs far longer than usual and never ends — The control cannot reach its target, which points at airflow or at heat.
- NEAR MISS - no heat at all in any cycle — That is a heating fault and belongs on the heating page.
Causes, most likely first on DHP
- Load size and load sorting — Ranked first on the DHP family: a very small or very mixed load simply never touches the sensor often enough, and that is a loading problem rather than a fault. That is a family-level property rather than a model-level one, which is why it leads here. This moves above restricted vent or a blocked lint path, which leads the brand-generic order, because these models share one layout, so its weak point shows across the whole family.
- Moisture sensor bars dirty or coated — Second: fabric softener films the sensor bars on this platform, and a coated sensor reads a wet load as dry within minutes.
- Restricted vent or a blocked lint path — Third: the machine judges the load by how fast moisture leaves it, so a duct that has closed down stretches every automatic cycle before it fails one outright.
- Control board or timer failure — Fourth: last, because the duct and the sensor between them explain nearly every cycle complaint that reaches a technician on this family.
- Thermistor or cycling thermostat drift — Last: the control reads temperature to decide cycle length, so a drifted sensor stretches or truncates the cycle without any other symptom.
Check in this order, and why
- Run a timed cycle and see whether it dries — This single test splits sensing faults from heating and airflow faults.
- Clean the lint filter and wipe the sensor bars — Both take a minute and both are common findings; use a little vinegar on the bars.
- Compare the discharge at the outside vent with what it used to be — It isolates the duct without the machine ever having to run unducted.
- Repeat with a normal mixed load — Do this last, because a very small load can fail a sensing cycle on a perfectly healthy machine.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Treat lint as the fire hazard it is: clear it out of the filter housing and the duct rather than pushing it further in, and run the machine only with its panels fitted and its duct connected to the outside.
When to call a technician
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Filter, sensor bars and the vent run are owner work. Call when timed cycles dry normally and automatic ones still will not, because the sensing circuit is then inside the machine.
Other DHP pages
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
