The short answer
A condenser dryer that stops part-way through is usually protecting itself, and most often because of this: the condensate tank filled and stopped the cycle. Next on the list: the moisture sensor is reading the load as already dry. How long it needs before it will restart tells you which protector tripped.
What you observe
- The cycle stops before the load is dry — Note whether it restarts straight away or needs a long rest.
- It stops at roughly the same point on large loads only — Load size decides how fast the tank fills.
- The cycle finishes early and the clothes are still damp — The machine believed the load was dry, so it stopped.
- Timed cycles dry properly and automatic ones stop early — The heat is fine; the decision to stop is not.
- NEAR MISS — the cycle finishes and the clothes are still wet — That is a sensor or an airflow question rather than a stall, and it reads differently.
Causes, most likely first on this machine
- The condensate tank filled and stopped the cycle — First on a ductless machine, because a full tank halts the programme by design. On a heavy load the tank can fill before the load is dry, so the machine stops part-way through every single time with nothing wrong with it.
- The moisture sensor is reading the load as already dry — Ranked here because it produces an early finish rather than a fault, which is the exact symptom people describe.
- The cycling thermostat is ending the programme early — Ranked here because the timed-versus-automatic test separates it cleanly from every airflow cause.
- The drum is overloaded — Last, but split one load in two before paying anyone.
Check in this order, and why
- Check whether the tank is full when it stops — A full tank halts the cycle by design.
- Wipe the sensor bars inside the drum with vinegar — A softener film makes wet fabric read as dry.
- Run a timed cycle and compare it with an automatic one — Timed working and automatic failing isolates the sensing.
- Try the same washing as two smaller loads — A machine that is fine on half a load is not faulty.
What an owner can safely check
- Note where it stops and how long before it will restart — An immediate restart and a long cool-down mean different protectors.
About 60 min
- Empty the tank before starting, not after finishing — On a large load, empty it part-way through as well.
About 5 min
- Clean the metal sensor bars in the drum with a little vinegar — Then run an automatic cycle and compare.
Tools: cloth, vinegarAbout 15 min
- Run a timed cycle end to end and note the result — That one test halves the diagnosis.
About 60 min
- STOP HERE before testing any thermostat or cut-out — Those tests are made on live terminals and they are not owner work.
Before you open anything
Safety
Unplug the machine or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off, and a dryer that has just cut out on temperature is hot inside long after it is silent. Empty and refit the condensate tank with the machine off; water and a live cabinet do not belong together. Never run the machine with the condenser unit out of its housing.
When to call a technician
Call once the filter, the duct or the tank are all clear and it still stops part-way. A machine cutting out repeatedly on temperature is being protected for a reason, and that reason needs finding. Call immediately if the cabinet or the load is too hot to handle when it stops, and do not restart it until it is cold.
Nearest pages of this class
What this page does not cover
This page is written for the brand and the machine class, not for one family or model line. Where a family- or model-specific page exists for your machine, it is the more specific answer and it is where to start. Deliberately absent: programme charts, capacity figures, condenser and board part identifiers and wiring colours, which differ between the condenser and heat-pump families.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
