Updated
Tumble Dryer Tripping The Electrics
Your tumble dryer is tripping the circuit breaker or RCD, cutting power when you try to use it.
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What's happening?
Tumble dryers are high-power appliances that generate significant heat. When a dryer trips the electrics, it is typically because the heating element has degraded, the motor is faulty, or lint buildup is causing overheating and insulation breakdown. Condenser dryers and heat pump dryers can also develop faults in their water collection systems that lead to earth leakage.
What usually causes it?
- Heating element has cracked or degraded, leaking current to earth
- Lint buildup around the element or motor causing overheating and tracking
- Motor insulation has broken down due to age or overheating
- Thermal fuse or thermostat has failed
- Condenser unit has a water leak reaching electrical components
Is it dangerous?
Tumble dryers are one of the most common causes of domestic fires in the UK. A dryer that trips the electrics may have a fault that could lead to overheating and fire. Do not continue using a dryer that trips — unplug it and have it inspected. Lint buildup combined with electrical faults is a particularly dangerous combination.
Can I fix it myself?
Clean the lint filter thoroughly — a blocked filter causes overheating. Check the vent hose (on vented models) is not blocked or kinked. Clean any accessible lint from inside the machine. If the dryer still trips after cleaning, the fault is internal and needs professional repair. Register your dryer with the manufacturer to receive safety recall notices.
When should you call an electrician?
Call an electrician if you believe the fault is in the socket or circuit rather than the dryer. If the socket is hot or discoloured, the problem may be a loose connection in the fixed wiring. For internal dryer faults, contact an appliance repair engineer. Given the fire risk with dryers, do not delay getting the fault investigated.
What will the electrician actually do?
- Test the socket circuit for faults and check the RCD
- Inspect the socket for signs of overheating (loose connections under load)
- Test the dryer's earth and insulation resistance
- Confirm whether the fault is in the machine or the electrical installation
- Recommend a dedicated circuit if the dryer is on an overloaded shared circuit
What will it cost to fix?
£80–£200
Electrician costs for circuit testing. Dryer repair by an appliance engineer is typically £70–£180 for element or motor work.
Find an electricianFrequently asked questions
We’re happy to answer all your questions.
Why does my tumble dryer trip the electrics?
The most common cause is a degraded heating element. Lint buildup causing overheating is the second most common cause. Both can lead to earth faults detected by the RCD.
Are tumble dryers a fire risk?
Yes. Tumble dryers cause hundreds of house fires in the UK each year. Lint buildup and faulty heating elements are the primary causes. Regular cleaning and prompt repair of faults are essential.
How often should I clean the lint filter?
Clean the lint filter after every use. Also clean inside the dryer door and the condenser unit (on condenser models) at least monthly. Check the vent hose on vented models regularly for blockages.
Should I run my tumble dryer when I am out?
Fire services advise against running tumble dryers while you are out or asleep. If the dryer develops a fault, you want to be present to respond quickly.
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