How to fix a dishwasher heating element that doesn’t work?

 

Confirm the Heating Element Is the Issue

 

A dishwasher heating element is essential because it heats the water during the washing cycle and ensures dishes dry properly afterward. If your dishes still feel wet at the end of a cycle or seem not as clean and sanitized as usual, the heating element might have malfunctioned. To be certain that the heating element is causing the problem, perform a quick diagnostic check:

• Run a regular dishwasher cycle.
• Open the dishwasher after about 30-40 minutes carefully during the washing cycle. (Be cautious as hot steam or water may escape.)
• Check the water temperature inside. If the water remains lukewarm or cool, the element is probably faulty.
• Alternatively, at the end of a complete washing cycle, if the dishes and dishwasher interior remain wet and cool rather than hot, it's likely your heating element has failed or become defective.

 

Inspect for Obvious Damage or Visible Issues

 

Now that you've identified the heating element as the likely culprit, visually inspect the element to locate any visible signs of damage or issues. To access the heating element:

• Disconnect and unplug the dishwasher from its power source for safety.
• Gently remove the bottom dish rack to reveal the heating element at the bottom of the dishwasher.
• Check carefully for cracks, corrosion, burned spots, splits, or any signs of damage or deterioration. Look closely at the element and nearby components.

If there is evident physical damage, you'll need to replace the heating element entirely, as it cannot safely or effectively be repaired.

 

Check Heating Element Continuity with a Multimeter

 

If no visual signs of damage are apparent, the following step is to test the electrical continuity of the heating element. You'll need a digital multimeter to check if the heating element circuit is open or closed. Follow these steps:

• Ensure your dishwasher remains disconnected from electricity.
• Disconnect the heating element wires from their connectors, accessing these connections from underneath the dishwasher or from behind an access panel.
• Adjust the multimeter to 'Ohms' or resistance testing mode.
• Hold each multimeter lead to each of the heating element terminals to measure resistance.

A functional heating element usually registers between approximately 10 to 50 ohms, depending on the model. A reading of zero or infinity indicates the element is defective and must be replaced.

 

Replace a Faulty Dishwasher Heating Element

 

If tests confirm a broken dishwasher heating element, replacement will be your best solution, as heating elements typically cannot be repaired. Follow these general instructions carefully as guidelines:

• Order a compatible replacement heating element matching your dishwasher model and brand.
• Make sure that your dishwasher is unplugged and disconnected from the power source before starting.
• Disconnect water supply lines and remove the dishwasher from its position or cabinet housing, allowing access to underneath the machine.
• Detach the old heating element’s wiring connections and mounting brackets or clips. Most dishwasher elements are secured by threaded nuts accessible from beneath the dishwasher.
• Carefully slide out the old heating element and secure the replacement heating element firmly in place, tightening the securing nuts or screws from below.
• Reconnect the electrical wiring securely to the new element as originally configured.
• Slide the dishwasher back into its installed location, reconnect water supply and drain hoses, and then reconnect power.

 

Test Dishwasher for Proper Operation After Repair

 

After a successful replacement, it is critical to run a full dishwasher cycle to ensure the new heating element functions correctly:

• Start a regular washing cycle and monitor the dishwasher closely, ensuring that water heats properly and your interior temperature rises noticeably during its cycle.
• After completing the wash and dry cycle, check again whether dishes feel warm and dry as expected.

If your dishwasher heating element still isn't working properly after replacement, the issue could lie elsewhere, such as in wiring, switches, relay controls, or a control board that needs diagnoses more thoroughly.

 

Seek Professional Assistance for Complex Issues

 

If you've performed all the testing, inspection, or replacement but continue to experience issues, consider contacting professionals who specialize in appliance repair. Trusted full-service providers like Hoffmann Brothers in St Louis or Nashville can offer more advanced diagnostics and repairs. Appliance experts can readily identify underlying issues, preventing incorrect or unnecessary repairs, and ensure the repair is effective and safe.

 

Preventative Tips to Extend the Lifespan of Your Dishwasher Heating Element

 

To avoid repetition of heating element issues and extend your dishwasher's life, follow these preventive recommendations:

• Avoid overloading the dishwasher, as it can lead to overheating and possible burnout of the heating element.
• Regularly remove food debris and build-up from dishwasher components, filters, and elements.
• Periodically check your water's hardness levels and, if needed, use water-softening agents designed for dishwashers; hard water can accelerate element deterioration.

With proper advice, guidance, and preventive care, resolving and preventing heating element issues is straightforward and manageable while extending the longevity of your dishwasher's performance for your home in St Louis, Nashville, or anywhere you reside.