Why Is My Tumble Dryer Not Heating Up? Common Causes and DIY Fixes

Help & Advice > Why Is My Tumble Dryer Not Heating Up? Common Causes and DIY Fixes

Have you ever opened your tumble dryer only to find damp clothes? Unfortunately, the issue of tumble dryers not heating up can be common, impacting your household routine. If you’re stuck in this situation, it’s good to understand the potential causes and solutions, whether you prefer a DIY approach or might eventually seek professional help from a trusted service provider.

That’s why this article covers quick fixes, common causes and when it’s time to call a professional.

Quick Troubleshooting Tips

When your tumble dryer isn’t heating up, there are a few quick troubleshooting tips you can follow before moving onto more advanced repairs. Here’s a short list of the most common issues:

• Check the dryer settings: Make sure the dryer is not set to “cool” or “eco” mode.
• Reset the circuit breaker: Ensure the circuit breaker for the dryer is not tripped and reset it if necessary.
• Inspect the gas supply (for gas dryers): Verify that the gas valve is open and the gas supply is active.
• Clean the lint filter: Remove any lint build-up that could restrict airflow.

Pro tip from a Domex engineer

“If your tumble dryer has stopped heating, try running it on an empty cycle for a few minutes. This can help reset the thermal cut-out switch in some models. However, if the problem persists, it’s best to have a professional inspect the machine to avoid further damage.”

Top 5 Common Causes of a Tumble Dryer Not Heating Up

Having done the preliminary check and your tumble dryer’s still not heating up, it’s time to look at more serious causes. The five most common ones are as follows:

• Faulty heating element: A malfunctioning heating element can prevent the dryer from generating.

• Blown thermal fuse: The role of the thermal fuse is for preventing overheating. Failure to work can disrupt dryer operations.

• Defective thermostat: A faulty thermostat might cause the dryer to fail in maintaining the required temperature.

• Clogged ventilation or lint filter: Blocked airways can cause dryers to stop heating properly.

• Broken timer or control board: Issues in the control system can affect the dryer’s heating cycle.

Remember that these issues are common across many brands, such as Bosch, Hoover, Hotpoint, Indesit, Beko, LG and Samsung. The good news is that here at Domex, we have experience with all these brands.

How to Diagnose the Issue: Step-by-Step Guide

If you need to diagnose the issue, the step-by-step guide below acts as a strong starting point.

• Step 1: Check the power supply 

Confirm the dryer is securely plugged into the power outlet. Inspect your home’s circuit breaker to see if the breaker for the dryer has tripped. Reset it if necessary. Use a multimeter to check if the outlet is supplying the correct voltage. Electric dryers usually require 240V.

• Step 2: Clean the lint filter

It’s usually found in the door or on top of the dryer. Take out the filter and remove any lint buildup. A clogged filter can restrict airflow and prevent proper heating.

• Step 3: Inspect the venting system

Ensure the vent hose is not kinked or blocked. Disconnect the hose and clean it out, including the vent duct leading outside. Poor ventilation can cause the dryer to overheat and shut down the heating element.

• Step 4: Test the thermal fuse

Refer to your dryer’s manual to find the thermal fuse, typically located on the blower housing or near the heating element. Use a multimeter to test for continuity. If there’s no continuity, the fuse is blown and needs to be replaced.

• Step 5: Check the heating element

The element is usually near the rear of the dryer. Look for any visible breaks or damage in the heating coil. Use a multimeter to check for continuity. If there’s no continuity, the heating element is faulty and should be replaced.

• Step 6: Test the thermostats

Dryers typically have a high-limit thermostat and a cycling thermostat, often located near the heating element. Use a multimeter to test these components. Replace them if they fail the continuity test.

• Step 7: Examine the timer or control board

If your dryer has a mechanical timer, listen for any unusual noises that might indicate a problem. If your dryer uses an electronic control board, inspect it for any burnt or damaged components.

• Step 8: Consider the temperature switch

Ensure the temperature setting is not set to “air dry” or a similar setting that doesn’t use heat. If your dryer has a temperature switch, test it with a multimeter for proper function.

Pro tip: If you’re unsure about any of these steps or need a professional diagnosis, consider contacting Domex, a reliable appliance repair service in London, Croydon, Surrey, Brighton, Nottingham and more.

Could the Problem Be Elsewhere?

If you’ve done the initial checks and then attempted to diagnose the issue without success, be aware that there are potential issues that could go beyond your dryer. Some of these include:

• Washing machine performance: Check if the washing machine’s spin cycle is properly wringing out water, as excessively wet clothes can affect drying times.
• Home electricity supply: Ensure that home electrical systems are functioning correctly.

When to Call a Professional Dryer Repair Service

There are situations where professional assistance is necessary. We advise you to get professional help when:

• Multiple components are faulty.
• Electrical-related issues are suspected.
• Persistent problems despite troubleshooting.

Of course, it’s also important to emphasise the dangers of DIY repairs, such as risks of electric shock.

That’s why when facing complex repairs, it’s always best to rely on experts. Domex offers comprehensive tumble dryer repair services to quickly and efficiently get your appliance back in working order.

Preventive Tips to Keep Your Dryer Running Smoothly

To keep your dryer running smoothly and to extend its lifespan, regular maintenance is key. Our preventive maintenance advice emphasises the following actions to keep your dryer going strong for longer:

• Properly clean dryer vents: Start by unplugging the dryer and disconnecting the vent hose from the back of the unit. Use a vacuum with a hose attachment or a specialised dryer vent brush to remove lint and debris from the vent hose and the wall duct. If the vent extends to an exterior wall, clean the outside vent cap as well. After removing all visible lint, reattach the hose and plug the dryer back in.
• Recognise the signs of trouble: Look out for signs like burning smells or clothes taking longer to dry.
• Regular maintenance: Schedule professional dryer vent cleaning annually to prevent fires and ensure efficient operation. Don’t forget to schedule your regular maintenance with Domex. Call us at 0330 210 2100 or book a repair today!
• Avoid overloading: Use proper drying settings and avoid overloading the dryer.

Conclusion

It’s essential to first understand the causes of heating issues and then to know the right steps to follow to fix a faulty tumble dryer that’s not heating up. We encourage you to apply the preventive tips mentioned above to avoid future problems. However, if your tumble dryer isn’t heating or you need expert help, Domex is here to assist with any repair needs, providing fast and professional service across London, Croydon, Surrey, Brighton, Nottingham, and surrounding areas.