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TUMBLE DRYER FAULTS

Tumble Dryer Taking Too Long

Long drying times are usually caused by restricted airflow, overloaded drums, blocked condensers, poor ventilation, low heat or dampness sensors.

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Switch off and unplug before cleaning inside, removing panels or checking moving parts

Tumble dryers combine mains electricity, high heat, lint and rotating components. Stop using the appliance if it overheats, trips the electrics, smells burnt or makes grinding noises.

MOST LIKELY CAUSES

Start with these

Lint filters blocked Restricted airflow slows moisture removal.
Condenser dirty Condensing performance falls as channels clog.
Vent hose restricted Vented dryers need a clear outlet path.
Load or sensor issue Overloading and dirty sensors extend cycles.
◫ Symptom variations Match the exact point in the drying cycle. ⌄
  • Clothes remain damp
  • Dryer runs much longer than before
  • Room becomes hot and humid
  • Condenser fills with lint
  • Cycles stop and restart
✓ Quick checks Simple checks before removing panels. ⌄
  1. Note when the fault appears.
  2. Clean all accessible lint filters.
  3. Check the load size and programme.
  4. Inspect visible vents, condenser parts and the power lead.
  5. Unplug before touching internal parts.
If airflow was the cause: performance should improve immediately.
If electrical or mechanical faults remain: stop and call an appliance engineer.
1 Step 1 — Clean every accessible filter Switch off and unplug before opening panels or touching internal parts. ⌄

Process

Switch off and unplug, then clean door, lower and secondary filters.

Success looks like: Airflow improves.
Escalate when: If performance remains poor, continue with condenser or vent checks.
2 Step 2 — Clean condenser or vent path Switch off and unplug before opening panels or touching internal parts. ⌄

Process

Follow the model instructions for removable condenser cleaning or external vent inspection.

Success looks like: Moisture leaves the dryer more effectively.
Escalate when: Sealed heat-pump systems need professional service.
3 Step 3 — Reduce and redistribute the load Switch off and unplug before opening panels or touching internal parts. ⌄

Process

Use a smaller, evenly mixed load.

Success looks like: Drying time returns to normal.
Escalate when: Persistent long cycles suggest heat or sensor faults.
⌁ Common causes explained Why tumble dryer faults develop. ⌄

Long drying times are usually caused by restricted airflow, overloaded drums, blocked condensers, poor ventilation, low heat or dampness sensors.

Airflow and heat are the biggest clues. Poor airflow causes long drying and overheating, while belt, motor and bearing faults affect drum movement and noise.

⌘ Advanced diagnostics Appliance-engineer checks and repair work. ⌄
  • Measure heater output.
  • Inspect moisture sensors.
  • Check condenser pump and channels.
  • Test fan performance.
  • Inspect external vent length and restriction.
▣ Parts that may need replacing Common components linked to this fault. ⌄
  • Lint filter
  • Condenser
  • Vent hose
  • Moisture sensor
  • Fan
! When to call an appliance engineer Conditions that should end basic troubleshooting. ⌄
  • The dryer trips the electrics.
  • The cabinet overheats or smells burnt.
  • The drum is seized, grinding or not turning.
  • Internal electrical testing is required.
  • The dryer must be dismantled.
  • The same fault returns after basic cleaning.
? Frequently asked questions Common tumble dryer questions. ⌄

Why does the dryer stop and restart after cooling?

Thermal protection may be operating because airflow is restricted or a motor is overheating.

Can lint cause a fire?

Yes. Filters, vents and condenser areas should be kept clean and the appliance should never be used while overheating.

Should I keep resetting the electrics?

No. Unplug the dryer and arrange fault testing.