How to Change Dishwasher Heating Element: A Step-by-Step Guide
Changing the dishwasher heating element is a common repair that homeowners can often perform themselves, saving money and reducing downtime. The heating element is essential for drying dishes and helping to achieve optimal cleaning results. When it fails, dishes may remain wet or the dishwasher may not heat water properly. Fortunately, with the right tools, some basic knowledge, and a systematic approach, you can replace the faulty heating element and restore your dishwasher’s performance.
Understanding the Dishwasher Heating Element
What Is a Dishwasher Heating Element?
The heating element in a dishwasher is a metal coil or a flat, ribbon-like component located at the bottom of the dishwasher tub. Its primary function is to generate heat for water during cleaning and to dry dishes after the wash cycle. It typically operates by converting electrical energy into heat through resistance.
Signs of a Faulty Heating Element
- Dishwasher fails to dry dishes
- Water does not heat up during wash cycles
- Cycle completes quickly without proper heating
- Visible damage or corrosion on the heating element
- Dishwasher displays error codes related to heating
Tools and Materials Needed
- Replacement dishwasher heating element
- Screwdrivers (Phillips and flat-head)
- Multimeter for testing continuity
- Work gloves and safety glasses
- Towels or rags
- Bucket or shallow container (for water drainage)
- Pliers (if necessary)
- Owner’s manual or service manual for your dishwasher model
Preparation Before Starting the Repair
Ensure Safety
Before beginning any repair, disconnect the dishwasher from the power supply by unplugging it or turning off the circuit breaker. Water and electricity are a dangerous combination, so safety precautions are paramount.
Gather All Necessary Tools and Parts
Having everything ready will streamline the process and prevent unnecessary delays. Verify that you have the correct replacement heating element compatible with your dishwasher model.
Access the Dishwasher Interior
Most repairs require removing the lower panel or kickplate. Consult your owner’s manual to locate the access panel and any screws or clips that secure it.
Step-by-Step Process to Change the Heating Element
1. Turn Off Power and Water Supply
Ensure the dishwasher is completely disconnected from electrical power. Also, turn off the water supply to prevent leaks during disassembly.
2. Remove the Bottom Panel or Kickplate
- Use a screwdriver to unscrew the screws holding the bottom panel or kickplate in place.
- Carefully remove the panel and set it aside.
3. Drain Any Remaining Water
Place towels or a shallow container under the dishwasher’s sump area. If water remains, carefully remove the sump cover or drain plug to let the water escape. Be cautious, as some water may still be in the system.
4. Locate the Heating Element
The heating element is typically situated at the bottom of the tub, often attached to a mounting bracket. It is a metal coil or ribbon with electrical connectors attached.
5. Disconnect Electrical Connections
- Identify the electrical wires connected to the heating element terminals.
- Use a screwdriver or pliers to gently disconnect the wires. Note their positions for reassembly.
- If the wires are secured with terminal screws, loosen them carefully.
6. Remove the Faulty Heating Element
- Unscrew or unclip the mounting brackets holding the element in place.
- Gently pull out the heating element from its socket or mounting area.
- If the element is stuck, wiggle it slightly or use pliers (with caution) to loosen it.
7. Test the Old Heating Element (Optional)
Before installing the new element, use a multimeter set to the continuity setting to test the old one. A reading of zero or close to zero indicates continuity, meaning the element is good. An open circuit (no continuity) confirms failure.
8. Install the New Heating Element
- Insert the new heating element into the socket or mounting area.
- Secure it with the mounting brackets or screws.
- Reconnect the electrical wires to the terminals, ensuring they are tightened securely.
9. Reassemble and Test
- Replace the sump cover if removed.
- Reattach the bottom panel or kickplate and secure it with screws.
- Restore the water supply.
- Plug the dishwasher back into the power outlet or turn on the circuit breaker.
- Run a short cycle to verify that the heating element is functioning correctly and that dishes are drying properly.
Additional Tips and Troubleshooting
Check for Proper Installation
Make sure all electrical connections are tight and that the heating element is seated correctly. Improper installation can cause the element to malfunction or pose safety hazards.
Test the Heating Element Before Full Use
Use a multimeter to verify continuity after installation. If there’s no continuity, double-check connections or consider replacing the element again.
Ensure the Thermostat and Control Board Are Functioning
If the new heating element still does not heat, the problem may lie with the thermostat, temperature sensor, or control board. Consult your manual or a professional technician for further diagnosis.
When to Seek Professional Help
- If you're uncomfortable working with electrical components
- If the problem persists after replacing the heating element
- If you notice signs of electrical damage or corrosion
Conclusion
Replacing a dishwasher heating element is a manageable DIY task that can extend the lifespan of your appliance and improve its performance. By following the systematic steps outlined above, you can confidently undertake this repair. Remember to prioritize safety, use the correct tools, and verify the functionality of the new part before completing the reassembly. With patience and care, your dishwasher will be back to optimal drying and heating in no time.
Frequently Asked Questions
What are the signs that my dishwasher's heating element needs to be replaced?
Common signs include dishes not drying properly, the dishwasher not heating water, or the cycle not completing correctly. If the heating element is broken, it may be visibly damaged or have burnt spots.
How do I safely access the dishwasher's heating element?
First, unplug the dishwasher or disconnect power. Then, remove the lower dish rack and access panel or toe kick plate to locate the heating element, usually at the bottom of the unit. Consult your dishwasher's manual for specific instructions.
What tools do I need to replace a dishwasher heating element?
You will typically need a screwdriver, a multimeter for testing, pliers, and possibly a socket wrench. Having replacement heating elements compatible with your model is also essential.
How can I test if my dishwasher's heating element is faulty before replacing it?
Use a multimeter to test for continuity across the heating element terminals. If there's no continuity, the element is likely burnt out and needs replacement.
What are the steps to replace a dishwasher heating element?
After disconnecting power, remove the lower panel, disconnect the wiring from the old element, unscrew or unclip it from its mount, then install the new element by reversing these steps. Ensure all connections are secure before testing.
Are there any safety precautions I should follow when replacing the heating element?
Yes, always unplug the dishwasher before starting work. Use insulated tools, avoid water contact with electrical parts, and wear safety gloves if necessary. If unsure, consider consulting a professional.
How long does it typically take to replace a dishwasher heating element?
On average, it takes about 30 minutes to an hour, depending on your experience and the dishwasher model. Following proper procedures can help ensure a smooth replacement.
Can I replace the dishwasher heating element myself, or should I hire a professional?
If you have basic electrical and appliance repair skills, you can replace it yourself. However, if you're uncomfortable working with electrical components, it's best to hire a professional technician for safety and proper installation.
How much does it cost to replace a dishwasher heating element?
The cost of the part generally ranges from $20 to $60, with additional costs for labor if hiring a professional. Doing it yourself can save on labor fees, but ensure you follow safety precautions.
