Dishwasher Heating Element Troubleshooting

Quick answer

If your dishwasher isn't heating water properly, first ensure the dishwasher is plugged in and the circuit breaker hasn't tripped. Check the heating element for any visible damage. If it's damaged, replace it. If not, the issue might be with the control board or thermostat.

Confirm the symptom

• Dishes aren't getting clean or have a film on them.
• Water inside the dishwasher is cold or lukewarm.
• Dishwasher cycle completes but dishes aren't dry.
• Error code related to heating on the dishwasher display.
• Dishwasher smells musty or moldy.

Tools and prep

• Screwdriver (Phillips and flathead)
• Multimeter
• Replacement heating element (if necessary)
• Work gloves
• Safety glasses
• Turn off power to the dishwasher at the circuit breaker.
• Allow the dishwasher to cool down if it was recently used.

Step-by-step troubleshooting

1. Access the Heating Element
   Do: Remove the bottom rack of the dishwasher.
   Observe: Locate the heating element at the bottom of the dishwasher.
   Means: You should see a coil-like structure at the bottom.
   Next: Inspect the heating element.
2. Inspect the Heating Element
   Do: Check for any visible damage such as burns, cracks, or corrosion.
   Observe: Note any signs of damage.
   Means: A damaged element will need to be replaced.
   Next: Test the heating element.
3. Test the Heating Element
   Do: Use a multimeter to test the resistance of the heating element.
   Observe: A functional heating element should have some resistance (not infinite or zero).
   Means: If the reading is incorrect, the element is faulty.
   Next: Replace the heating element if necessary.
4. Replace the Heating Element
   Do: Disconnect the wires from the old heating element.
   Observe: Note the wire connections.
   Means: This will help in reconnecting the new element.
   Next: Install the new heating element.
5. Install the New Heating Element
   Do: Attach the new heating element and reconnect the wires.
   Observe: Ensure all connections are secure.
   Means: A loose connection can cause further issues.
   Next: Reassemble the dishwasher.
6. Reassemble the Dishwasher
   Do: Replace the bottom rack and any other parts removed.
   Observe: Ensure everything is back in place.
   Means: This will allow the dishwasher to function properly.
   Next: Run a test cycle.
7. Run a Test Cycle
   Do: Turn the power back on and run a test cycle.
   Observe: Check if the heating element is working correctly.
   Means: The dishes should be clean and dry.
   Next: If the issue persists, check other components.

Common causes

Parts matching

Ensure you have the correct replacement parts before starting the repair.

• Heating Element: Replace if damaged or faulty.
• Thermostat: Check if the heating element is functional but not heating.
• Control Board: Inspect if other components are working but the issue persists.
• Wiring Harness: Verify if there are loose or damaged wires.
• Descaler or Vinegar: Use to remove calcium buildup.

Always double-check the model number of your dishwasher to ensure compatibility with replacement parts.

When to call a professional

• If the dishwasher is under warranty.
• If you're not comfortable working with electrical components.
• If the issue persists after replacing the heating element.
• If there are signs of water leakage or flooding.
• If you encounter any unusual noises or smells during operation.

FAQ

Related guides

• dishwasher error codes

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