How to Replace a Whirlpool Dishwasher Heating Element: A Step-by-Step Guide
Replacing a Whirlpool dishwasher heating element involves a series of straightforward steps to diagnose the problem, access the component, and install the new element, typically taking under an hour with basic tools and safety precautions. This guide will walk you through the process to ensure a successful and safe repair.
Understanding the Importance of a Functional Heating Element
A functional heating element is critical for optimal dishwasher performance. It’s responsible for heating the water to the required temperature for effective cleaning and, crucially, for the drying cycle. Without a working element, dishes may emerge still dirty and wet, requiring manual washing and drying.
Diagnosing a Faulty Heating Element
Several signs can indicate a failing or completely broken heating element:
- Dishes remain wet after the drying cycle: This is the most common symptom.
- Dishes are not cleaned thoroughly: Lower water temperature reduces the cleaning efficacy of detergents.
- No heat during the wash cycle: Feel the inside of the dishwasher during a wash cycle.
- Error codes: Some Whirlpool dishwashers display error codes related to heating issues.
The most definitive diagnosis requires a multimeter. You can test the heating element for continuity. A reading of near zero indicates a good element, while infinite resistance signals a break.
Gathering Necessary Tools and Materials
Before beginning the repair, gather the following:
- New Whirlpool heating element: Ensure it is compatible with your specific dishwasher model. Check the model number inside the dishwasher door.
- Multimeter: For testing the old and new heating element.
- Screwdrivers: Both Phillips head and flathead may be required.
- Pliers: For disconnecting and connecting wires.
- Voltage Tester: Absolutely essential to verify power is off.
- Gloves: For protection.
- Safety Glasses: To protect your eyes.
- Towels: To absorb any spilled water.
Step-by-Step Replacement Process
Follow these steps to replace the heating element safely and effectively:
- Safety First: Disconnect Power: Turn off the circuit breaker supplying power to the dishwasher. Double-check with a voltage tester to confirm.
- Disconnect Water Supply: Shut off the water supply valve to the dishwasher, usually located under the sink.
- Remove Dishwasher Racks: Take out both the upper and lower racks for easy access.
- Remove the Lower Spray Arm: This is usually held in place with a simple clip or threaded connection.
- Remove the Lower Filter Assembly: Typically, this twists out or lifts out.
- Locate the Heating Element: It’s a circular or coiled component located at the bottom of the dishwasher tub.
- Disconnect the Wires: Use pliers to disconnect the wires connected to the heating element terminals. Note the wire positions – take a picture for reference.
- Remove the Heating Element: This is usually held in place with screws or clips. Remove these to release the element.
- Install the New Heating Element: Insert the new element into the designated space and secure it with the screws or clips.
- Reconnect the Wires: Reconnect the wires to the terminals, ensuring they are in the correct positions. Refer to the picture you took earlier.
- Reassemble the Dishwasher: Replace the lower filter assembly, spray arm, and dishwasher racks.
- Restore Power and Water: Turn on the water supply and flip the circuit breaker back on.
- Test the Dishwasher: Run a short cycle to ensure the heating element is working correctly.
Common Mistakes to Avoid
- Forgetting to disconnect power: This is a critical safety hazard.
- Incorrect wiring: Improper wiring can damage the dishwasher or the new heating element.
- Using the wrong heating element: Ensure the new element is compatible with your model.
- Over-tightening screws: This can damage the dishwasher tub or the element.
Troubleshooting After Replacement
If the dishwasher still doesn’t heat after replacement, consider these troubleshooting steps:
- Verify Power: Double-check the circuit breaker and wiring.
- Check the Thermostat: A faulty thermostat can prevent the heating element from activating.
- Inspect the Control Board: The control board could be the source of the problem if all else fails.
Cost Comparison: DIY vs. Professional Repair
| Task | DIY Cost (Materials Only) | Professional Repair Cost |
|---|---|---|
| Heating Element | $30 – $80 | Included in labor cost |
| Labor | $0 | $100 – $200 |
| Total Estimated Cost | $30 – $80 | $130 – $280 |
Frequently Asked Questions (FAQs)
How do I know if my Whirlpool dishwasher heating element is bad?
The most common indicator is dishes remaining wet after the drying cycle. Other signs include dishes not being thoroughly cleaned, a lack of heat inside the dishwasher during operation, or specific error codes displayed on the control panel. Testing with a multimeter is the definitive method.
Can I replace the heating element myself, or should I call a professional?
Replacing the heating element is a manageable DIY project for many homeowners, provided you are comfortable with basic tools and safety procedures, especially electrical safety. If you’re hesitant or unsure, consulting a professional is always the best option to avoid any potential hazards.
What tools are absolutely essential for replacing a dishwasher heating element?
A new heating element, screwdrivers (Phillips and flathead), pliers, and a multimeter are crucial. Safety glasses, gloves, and a voltage tester are also indispensable for safety. A towel to clean up spills is always a good idea, too.
How do I find the correct replacement heating element for my Whirlpool dishwasher?
The most reliable method is to locate the model number of your dishwasher, usually found inside the door or on the side panel. Then, search online for a compatible heating element using this model number. Verify the element’s specifications match your dishwasher’s requirements.
What safety precautions should I take when replacing the heating element?
The most important precaution is to disconnect the power to the dishwasher at the circuit breaker. Always use a voltage tester to confirm the power is off. Also, shut off the water supply to avoid any leaks.
What should I do if the new heating element doesn’t fix the problem?
If the dishwasher still isn’t heating, other potential issues include a faulty thermostat, a defective high-limit thermostat, or a malfunctioning control board. Further troubleshooting or consulting a professional is advised.
How long does it typically take to replace a dishwasher heating element?
The entire process, from start to finish, generally takes between 30 minutes to an hour for someone with basic mechanical skills and the right tools. Allow more time if you’re a beginner.
Are there any specific wiring instructions I need to follow when connecting the new heating element?
Always refer to the wiring diagram provided with the new heating element or take a picture of the old wiring configuration before disconnecting it. Ensure all connections are secure and properly insulated. Incorrect wiring can damage the appliance.
What are some common error codes related to heating element issues on Whirlpool dishwashers?
Common error codes vary by model, but some examples include F9 E1, which typically indicates a heating problem. Consult your dishwasher’s user manual or the Whirlpool website for a specific code definition and troubleshooting steps for your model.
Can a damaged heating element cause other problems in the dishwasher?
Yes, a damaged heating element can sometimes cause other issues, such as tripping the circuit breaker, causing water leaks, or damaging the control board if the element shorts out.
What is the average lifespan of a Whirlpool dishwasher heating element?
A dishwasher heating element typically lasts between 5 to 10 years, depending on usage frequency and water quality. Hard water can shorten its lifespan due to mineral buildup.
How can I prevent my heating element from failing prematurely?
Regularly clean the dishwasher filter and interior to prevent debris buildup. Use a dishwasher cleaner periodically to remove mineral deposits. Also, avoid overloading the dishwasher, as this can strain the heating element and other components.