What this usually is
The useful split on this roster is between a cycle that stops too soon and one that runs on indefinitely — opposite faults with a shared cause. A door switch releasing under vibration stops everything instantly and looks like a control fault. Note where in the cycle it fails, twice, before opening anything. The second column is the family key, and the first is what the rating plate will say.
How it presents
- The drum turns but the heat comes and goes — A cycling thermostat or a cutout opening on temperature, which means the air is restricted.
- An automatic cycle ends within minutes, load still wet — The moisture sensor is reading dry. Residue on the sensor bars is the usual explanation.
- An automatic cycle runs on and on — The machine cannot reach its dryness threshold, which points at airflow rather than at sensing.
- A timed cycle completes but the load is damp — Not a cycle fault at all: the machine ran exactly as instructed and the airflow was not sufficient.
- NEAR MISS — nothing happens at all when started — A machine that never begins belongs on the start page for this family.
Causes, most likely first on this roster
- Moisture sensor bars coated with residue — First on this roster. The bars measure conductivity across a tumbling load, and a film of fabric softener insulates them, so the machine reads even a soaking load as dry and ends the cycle almost immediately.
- Thermal cutout or cycling thermostat opening — The drum keeps turning and the heat stops, which reads as a cycle that never completes. The device is reporting restricted airflow rather than failing.
- Overloading — Not a failure. A drum packed too full cannot tumble, so the load neither dries nor presents itself to the sensor, and the cycle behaves erratically as a result.
- Timer or control fault — Last. Genuine but uncommon, and confirming it means eliminating everything above it first — which is the whole point of the order on this page.
- Body: Ranked for these models. The generic version reaches for the timer; here the timer is the last suspect.
The diagnostic order for this family
- Run a timed cycle instead of an automatic one — If a timed cycle dries the load properly, the sensing is at fault and the airflow is fine.
- Watch the vent hood outside while the machine runs — A flap that barely lifts means the machine cannot exhaust, which explains a cycle that runs for ever.
- Try a half load — Separates overloading from everything else in a single cycle and costs nothing to try.
- Body: Use a timed cycle as a diagnostic — it takes the sensing out of the loop entirely. Too short and too long are opposite symptoms with different causes.
Isolate first
Safety
Unplug the appliance or switch off its breaker before removing any panel; a capacitor can hold a charge after the power is off. On a gas machine, close the appliance shut-off valve before disturbing any fitting, and if you smell gas leave the building and call the gas utility or emergency services from outside. Checking your listing against the table takes a moment and saves ordering against the wrong catalogue.
Models in the TLS family — Every listing below is in scope. The table is the boundary of this page's generalization.
Reference| Model number | Family key |
|---|---|
| TLS752CAXXL# | asko:dryer:tls |
When this stops being owner work
The owner line on this family is the cabinet panel. Cleaning bars and filters, clearing a duct and trying a smaller load are all yours. Testing a thermostat or a control board is not. Call when the timed cycle proves the airflow good and the automatic cycle still misbehaves. Part numbers are left to the table above; the text stays with the method, which is what holds.
The rest of this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
