How to Replace a Dishwasher Heating Element?
Replacing a dishwasher heating element involves disconnecting the power, removing the lower rack and spray arm, accessing the element, disconnecting the wires, and replacing the element. This task requires caution and attention to detail, but you can successfully replace a faulty element yourself and restore your dishwasher’s functionality.
Understanding the Importance of a Functional Heating Element
The heating element in your dishwasher is critical for proper cleaning and sanitation. It raises the water temperature to optimal levels for dissolving detergents and removing food particles. Without a working heating element, your dishes may come out dirty, greasy, or even harboring bacteria. A functional element also assists in the drying process, ensuring your dishes are ready to be put away immediately after the cycle. A dishwasher without a working heating element essentially becomes a very expensive rinse machine.
Assessing the Need for Replacement
Before jumping to the conclusion that your heating element is faulty, perform some basic troubleshooting. Common signs of a malfunctioning heating element include:
- Dishes are not clean after a cycle.
- Dishes are still wet after the drying cycle.
- The dishwasher runs through a cycle but the water remains cold.
- The heating element shows signs of physical damage (burns, cracks).
A simple test involves running a cycle and checking the water temperature. If the water remains cold, the heating element is a likely suspect. Additionally, you can use a multimeter to check the element’s continuity. An open circuit indicates a failed element. Always consult your dishwasher’s user manual for specific troubleshooting steps.
Safety First: Preparing for the Replacement
Replacing a dishwasher heating element involves working with electricity and water, so safety is paramount.
- Disconnect the Power: Turn off the circuit breaker to the dishwasher before starting any work. Double-check using a voltage tester to ensure no power is flowing to the appliance.
- Turn off the Water Supply: Close the water shut-off valve to the dishwasher to prevent leaks.
- Gather Your Tools: You’ll need a screwdriver (Phillips and flathead), pliers, a multimeter (optional but recommended), work gloves, and safety glasses.
- Consult Your Dishwasher’s Manual: The manual will provide specific instructions and diagrams relevant to your model.
Step-by-Step Replacement Process
Here’s a detailed guide to replacing your dishwasher’s heating element:
- Access the Heating Element: Open the dishwasher door and remove the lower rack and spray arm. This will give you access to the heating element, which is typically located at the bottom of the dishwasher tub.
- Locate and Disconnect the Wiring: The heating element is connected to wires, usually with screw terminals or push-on connectors. Take photographs of the wiring configuration before disconnecting anything, as you will need to reconnect the wires in the same order. Use pliers to disconnect the wires from the element terminals.
- Remove the Old Element: The heating element is usually held in place by screws or clips. Remove these fasteners to detach the element from the dishwasher tub. Carefully remove the old element, noting its orientation.
- Install the New Element: Insert the new heating element into the dishwasher tub, ensuring it is properly seated. Secure it with the screws or clips you removed earlier.
- Reconnect the Wiring: Referring to the photos you took earlier, reconnect the wires to the terminals on the new heating element. Make sure the connections are secure.
- Reassemble the Dishwasher: Replace the lower rack and spray arm.
- Test the Dishwasher: Turn on the water supply and the circuit breaker. Run a short cycle to test the new heating element. Check for leaks and ensure the water heats up.
Common Mistakes to Avoid
- Forgetting to Disconnect Power: This is the most dangerous mistake. Always disconnect the power before working on any electrical appliance.
- Not Labeling Wires: Failure to properly label or photograph the wiring configuration can lead to incorrect connections, potentially damaging the dishwasher.
- Over-tightening Screws: Over-tightening can strip the screw holes or damage the heating element.
- Using the Wrong Replacement Part: Ensure you purchase a replacement heating element that is compatible with your dishwasher model.
- Ignoring Safety Precautions: Always wear safety glasses and work gloves to protect yourself from injury.
Choosing the Right Replacement Element
When purchasing a replacement heating element, consider the following:
| Feature | Description |
|---|---|
| Compatibility | Ensure the element is specifically designed for your dishwasher make and model. |
| Wattage | The wattage of the new element should match the old one to ensure proper heating. |
| Quality | Opt for a reputable brand known for producing durable and reliable appliance parts. |
| Reviews | Read customer reviews to assess the element’s performance and longevity. |
Frequently Asked Questions (FAQs)
Can I repair a broken heating element instead of replacing it?
Repairing a broken heating element is usually not possible or advisable. The element consists of a sealed resistance coil that is difficult and dangerous to repair. It’s safer and more effective to replace the entire element.
How do I find the correct replacement heating element for my dishwasher?
The best way to find the correct replacement is to use your dishwasher’s model number. You can usually find this number on a sticker or plate inside the dishwasher door. Search online appliance parts retailers using the model number.
What tools do I absolutely need for this repair?
At a minimum, you’ll need a screwdriver set (Phillips and flathead), pliers, and safety glasses. A multimeter is highly recommended for testing the old and new elements.
How long does it typically take to replace a dishwasher heating element?
The entire process usually takes between 30 minutes to an hour, depending on your experience and the complexity of your dishwasher model.
What happens if I install the heating element incorrectly?
Incorrect installation can lead to poor heating performance, electrical shorts, or damage to the dishwasher. Carefully follow the instructions and double-check all connections.
Is it safe to run the dishwasher without a heating element?
Running the dishwasher without a heating element will result in poor cleaning performance and ineffective sanitization. Dishes may not be properly cleaned or dried.
Where can I purchase a replacement heating element?
You can purchase replacement heating elements from online appliance parts retailers, local appliance repair shops, or hardware stores.
How much does a replacement heating element typically cost?
Replacement heating elements typically range in price from $20 to $80, depending on the brand and model.
What other parts should I inspect while I have the dishwasher disassembled?
While the dishwasher is disassembled, it’s a good idea to inspect the spray arms, filters, and water inlet valve for any signs of damage or clogging.
Does replacing the heating element void my dishwasher’s warranty?
Performing DIY repairs may void your dishwasher’s warranty, especially if the repairs are not done correctly and cause further damage. Check your warranty terms and conditions.
What should I do if the new heating element still doesn’t work after installation?
If the new heating element doesn’t work, double-check the wiring connections. Use a multimeter to confirm that the element is receiving power. Also, check the thermostat or high-limit switch as they may be faulty.
Is it necessary to hire a professional to replace the heating element?
While DIY replacement is possible, hiring a qualified appliance repair technician is recommended if you are uncomfortable working with electricity or if you are unsure about any part of the process. This will ensure the repair is done safely and correctly.