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How to fix a dishwasher that’s not heating

Your dishwasher is a time-saving appliance that efficiently cleans your dishes with just a couple of clicks and settings. However, like any appliance, it can also need repairs. If you’re facing the issue of a dishwasher that won’t heat and run hot washing cycles, one of the keys to sterile washing, don’t panic, Maydone is here to help! 

We’ll take you through a step-by-step troubleshooting process to help you identify and resolve the problem, ensuring your dishwasher functions optimally once again.

Start with the power supply

The first step is to ensure that your dishwasher is receiving adequate power. Start by checking if it’s plugged in properly and that the circuit breaker hasn’t tripped. 

If the power supply is interrupted, restore it and check if the heating issue persists.

Then check your water temperature 

Next, check the water temperature inside the dishwasher. Run the hot water tap in your sink for a few minutes before starting the dishwasher. 

This ensures that hot water flows into the appliance from the beginning, allowing it to reach the desired temperature during the wash cycle.

Check the dishwashers heating element

The heating element is responsible for heating the water in your dishwasher. Locate it (usually at the bottom of the dishwasher) and visually inspect for any signs of damage, such as cracks or breaks. 

If you notice any issues, the heating element may need to be replaced. Consult your dishwasher’s manual or contact a professional for guidance on replacing the heating element.

Move on to the thermostat 

The thermostat regulates the temperature inside the dishwasher. Access the thermostat, usually located near the heating element, and use a multimeter to test its continuity. If the thermostat fails the continuity test, it might need to be replaced.

Look at the timer or control board

A malfunctioning timer or control board can also cause heating problems in your dishwasher. Consult your dishwasher’s manual to locate these components. Check for any visible signs of damage, loose wires, or burnt connections. 

If you suspect an issue, contact a professional technician or the manufacturer for assistance in repairing or replacing these parts.

Clean the spray arms and debris on filters

Follow this three-step method to cover it all. 

  1. Clogged spray arms and filters can restrict water flow and prevent proper heat distribution. 
  2. Remove the spray arms and filters according to your dishwasher’s manual and clean them thoroughly. 
  3. Eliminating any blockages will help improve water circulation and enhance heating performance.

Remember to deep clean your dishwasher regularly. 

Make sure you’re using a safe detergent

Using the wrong dishwasher detergent can interfere with the heating process. Ensure you’re using a high-quality detergent specifically designed for dishwashers. 

Avoid liquid dish soap or handwashing detergents, as they can create excessive suds and hinder the dishwasher’s ability to heat water effectively.

Call the best in the GTA for appliance repairs

A dishwasher that won’t heat can be a frustrating issue to deal with, but with proper troubleshooting and a methodical approach, you can often resolve the problem on your own. 

By following the steps outlined in this guide, you’ll be able to identify the underlying cause of the heating issue and take the necessary steps to fix it. 

However, if you’re unsure or uncomfortable performing these tasks, it’s always recommended to seek professional help, and who better than to call the top-rated option Toronto, Maydone’s 24/7 dishwasher repairs!

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  • This is the second time I’ve used their services, and both time was helped by Alex. He was incredibly thorough, punctual and incredibly diligent. He went above and beyond and even fixed a wobbly door under my sink. It’s always a pleasure to find a reliable and efficient service, and I would absolutely use Alex in the future!
    Briana Di Cecca Berge
  • Working in a veterinary clinic - we understandably go through a lot of laundry. Our washer was out of commission and within a very short period of time, Igor not only diagnosed the problem but had it fixed. He was efficient and easy to work with.
    Heather Anderson
  • When it comes to repairs you want professional, experienced contractors and on top of the problem you have. Maydone has it all. We worked with Alex (we highly recommend you ask for him) who was on time, polite, does the job, very neat and professional.
    Emilia Ianeva
  • Contacted them late in the day and got a response first thing in the morning. Techinicians came the following day, showed up on time and repaired it quickly. Wouldn't hesitate to contact them again in the future.
    Patrick Brown