Dishwashers are essential appliances that significantly simplify kitchen cleanup tasks. Yet, like any mechanical device, they can develop issues over time, affecting their efficiency and performance. One common culprit behind dishwashing problems is the float switch. This guide aims to help you locate, understand, and replace the float switch in both KitchenAid and LG dishwashers. With detailed instructions and insights, you’ll be equipped to tackle this DIY project confidently.

Understanding the Float Switch

Before delving into the specifics of locating and replacing the float switch, let’s explore what this component is and why it’s crucial for the proper functioning of your dishwasher.

What is a Float Switch?

The float switch is a vital mechanical device that regulates the water level inside your dishwasher. It consists of a buoyant float connected to a switch. As water fills the dishwasher, the float rises and activates the switch to stop further water flow when the desired level is reached. Conversely, if the water level drops too low, the float switch allows the dishwasher to refill.

Importance of the Float Switch

Understanding the significance of the float switch is key to realizing its impact on your dishwasher’s performance. Here are some reasons why a functioning float switch is essential:

• Prevents Overfilling: A malfunctioning float switch can lead to overfilling, causing water to leak out of the dishwasher and potentially damaging your flooring.
• Ensures Adequate Cleaning: If the float switch fails to signal for refilling, your dishes may not receive enough water for effective cleaning.
• Error Notifications: Many modern dishwashers display error codes when the float switch is defective, rendering the appliance inoperable until resolved.

Understanding the float switch’s functionality helps in troubleshooting and makes the repair process more manageable.

Locating the Float Switch in KitchenAid Dishwashers

Now that you know what the float switch is and its importance, let’s discuss how to locate it in your KitchenAid dishwasher. Different models may have varying designs and placements, but we will cover the general approach to finding this component.

Step-by-Step Guide to Finding the Float Switch

1. Safety Precautions:

• Always start by ensuring your dishwasher is unplugged or disconnected from the power supply to prevent any electrical hazards.

1. Open the Dishwasher Door:

• Fully open the door to gain access to the interior of the dishwasher.

1. Remove the Bottom Rack:

• Take out the bottom dish rack to provide easier access to the dishwasher’s base.

1. Locate the Float Assembly:

• The float switch is typically positioned near the bottom of the dishwasher. Look for a circular or cylindrical piece made of plastic, which is the float mechanism.

1. Inspect the Float:

• Lift the float gently to ensure it moves freely. If it’s stuck or blocked by debris, it can cause operational issues.

Common KitchenAid Float Switch Locations

Here’s a table listing specific models and their float switch locations to help you navigate this process more effectively:

Model	Float Switch Location
KitchenAid KDTM354DSS	On the left side of the sump area
KitchenAid KDFE104DSS	Near the front of the dishwasher, below the spray arm
KitchenAid KDFE104HPS	In the center of the base, under the cover plate
KitchenAid KDTE334GPS	Adjacent to the drain hole in the lower tub

By knowing these common locations, you can quickly identify the float switch in your specific KitchenAid model.

Replacing the Float Switch in KitchenAid Dishwashers

After locating the float switch and confirming that it needs replacement, you can proceed with the following detailed steps.

Tools and Materials Needed

Before starting the replacement process, gather these essential tools and materials:

• Replacement float switch (specific to your model)
• Screwdriver (both flathead and Phillips)
• Pliers
• Towels or a sponge (for any water cleanup)
• Safety gloves

Step-by-Step Replacement Process

1. Turn Off the Power:

• Ensure your dishwasher is completely powered off by either unplugging it or turning off the circuit breaker.

1. Remove the Float Assembly:

• If there is a protective cover over the float switch, remove it carefully by unscrewing or unclipping it.

1. Disconnect the Old Float Switch:

• Gently pull out the float assembly from its housing. You might need to wiggle it slightly to release it from any clips or retaining mechanisms.

1. Install the New Float Switch:

• Align the new float switch with the housing and press it into place gently. Make sure it can move freely up and down.

1. Reattach the Float Assembly Cover:

• If your model has a protective cover, secure it back onto the float assembly.

1. Test the Dishwasher:

• Plug the dishwasher back in or turn on the circuit breaker. Run a short cycle to ensure the float switch operates correctly and check for leaks.

Locating the Float Switch in LG Dishwashers

The process for finding the float switch in LG dishwashers is quite similar to that of KitchenAid models. Here, we will guide you through the steps.

Step-by-Step Guide to Finding the Float Switch

1. Safety Precautions:

• Always disconnect the dishwasher from the power source before starting any repairs.

1. Open the Door:

• Fully open the dishwasher door to access the interior.

1. Remove the Bottom Rack:

• Take out the bottom rack for better access to the dishwasher base.

1. Locate the Float Assembly:

• In LG dishwashers, the float switch is generally found near the bottom of the tub, usually centrally located or slightly to the side.

1. Check the Float Mechanism:

• Lift the float to check for any obstructions and ensure it moves freely without sticking.

Common LG Float Switch Locations

Below is a table detailing some common LG dishwasher models and their respective float switch locations:

Model	Float Switch Location
LG LDF5545ST	In the center of the base, beneath the spray arm
LG LDP6797ST	Near the left side of the tub, adjacent to the drain
LG LDF7774ST	At the rear left corner of the dishwasher
LG LDF5678ST	Centrally located, next to the drain pump

Knowing these locations will help you quickly identify the float switch in your LG dishwasher model.

Replacing the Float Switch in LG Dishwashers

Once you have located the float switch in your LG dishwasher, follow these detailed steps for replacement.

Tools and Materials Needed

Gather the necessary tools and materials for the replacement:

• Replacement float switch (compatible with your specific model)
• Screwdriver (flathead and Phillips)
• Pliers
• Towels or sponge (for cleanup)
• Safety gloves

Step-by-Step Replacement Process

1. Turn Off the Power:

• Make sure the dishwasher is completely powered off by unplugging it or turning off the circuit breaker.

1. Remove the Float Assembly:

• If there is a protective cover, remove it by unscrewing or unclipping it.

1. Disconnect the Old Float Switch:

• Gently pull out the float assembly from its housing, ensuring not to damage any attached wiring.

1. Install the New Float Switch:

• Align the new float switch with the housing and press it into place carefully. Confirm that it moves freely without obstruction.

1. Reattach the Float Assembly Cover:

• If applicable, secure the protective cover back onto the float assembly.

1. Test the Dishwasher:

• Plug the dishwasher back in or turn on the circuit breaker. Run a short cycle to verify that the float switch functions correctly and to check for any leaks.

Troubleshooting Common Float Switch Issues

Even after replacing the float switch, you may still encounter issues. Here are some common problems and their solutions.

Float Switch Not Functioning

• Possible Causes: Blockages or damage to the float assembly, faulty wiring, or a defective control board.
• Solution: Inspect for debris around the float, ensure that it moves freely, and check wiring connections for any damage.

Dishwasher Still Overfilling or Underfilling

• Possible Causes: A malfunctioning float switch or issues with the water inlet valve.
• Solution: Confirm that the new float switch is installed correctly and test the water inlet valve for proper operation.

Error Codes Displayed

• Possible Causes: Error codes can indicate issues with the float switch or other internal components.
• Solution: Refer to your dishwasher’s manual for error code interpretations and troubleshooting steps.

Water Leaking from the Dishwasher

• Possible Causes: Overfilling due to a malfunctioning float switch or improperly sealed components.
• Solution: Check for leaks around the float switch area and ensure all connections and seals are secure.

Maintenance Tips for Your Dishwasher

To keep your dishwasher in optimal working condition and prevent float switch problems in the future, consider implementing the following maintenance practices:

Regular Cleaning

Keeping the dishwasher clean helps prevent debris buildup that can obstruct the float switch and other components. Here are a few tips for effective cleaning:

• Wipe Down the Interior: Regularly wipe down the walls and door seals with a damp cloth to remove food particles and residue.
• Clean the Filter: Many dishwashers have a removable filter that should be cleaned periodically to prevent clogs. Refer to your model’s manual for instructions.
• Run a Cleaning Cycle: Use a dishwasher cleaner or a mixture of vinegar and baking soda to run a cleaning cycle, ensuring that internal components are free from buildup.

Inspect the Float Switch Periodically

Schedule regular inspections of the float switch to ensure it’s functioning properly:

• Lift the Float: Check if the float moves freely and isn’t blocked by any debris.
• Listen for Activation: When you fill the dishwasher, listen for the float switch activating to stop water flow.

Keep the Drain Area Clear

Regularly check the drain area for clogs, as blockages can affect the float switch’s operation:

• Inspect the Drain Hose: Ensure there are no kinks or obstructions in the drain hose.
• Remove Debris: Regularly clear any food particles or debris from the drain area to promote smooth water flow.

Use the Right Detergent

Using the appropriate detergent for your dishwasher model is crucial:

• Avoid Excessive Suds: Using too much detergent or the wrong type can create excessive suds, leading to overfilling and potential float switch issues.
• Refer to Manufacturer Guidelines: Always follow the manufacturer’s recommendations for detergent type and amount.

Run the Dishwasher Regularly

Running your dishwasher regularly helps keep seals and gaskets pliable, reducing the chances of leaks:

• Maintain Regular Usage: Aim to run the dishwasher at least once a week to keep it in good working condition.
• Empty Promptly: Always empty the dishwasher promptly after cycles to prevent moisture buildup and odors.

Conclusion

In summary, understanding and addressing the float switch in your KitchenAid or LG dishwasher is crucial for ensuring its optimal performance. By knowing how to locate and replace the float switch, you can troubleshoot common issues that may arise. Remember to follow proper safety precautions during the repair process and to maintain your dishwasher regularly to avoid future problems.

As you embark on your DIY repair journey, be sure to refer to this guide for assistance. We encourage you to explore further reading on dishwasher maintenance and repair techniques to deepen your understanding. If you have any suggestions or experiences to share regarding float switch issues or repairs, please leave a comment below. Your insights could help others in the community! Happy washing!

FAQs:

What symptoms indicate a faulty float switch in my dishwasher?

Common symptoms of a faulty float switch include water overflowing from the dishwasher, failure to fill with water, error codes displayed on the control panel, and unusual noises during operation. If you notice any of these issues, it’s advisable to inspect or replace the float switch.

How can I tell where the float switch is located in my KitchenAid or LG dishwasher?

The float switch is usually found at the bottom of the dishwasher tub. In KitchenAid models, it may be near the sump area or adjacent to the drain hole. In LG models, look for it centrally located or slightly to the side. Consult your dishwasher’s manual for specific locations based on your model.

What tools do I need to replace the float switch in my dishwasher?

To replace the float switch, you will typically need a replacement float switch specific to your model, screwdrivers (both flathead and Phillips), pliers, and safety gloves. Additionally, having towels or a sponge on hand can help manage any water cleanup during the process.

How do I maintain my dishwasher to prevent float switch issues?

Regular maintenance includes cleaning the dishwasher interior and filter, inspecting the float switch for blockages, ensuring the drain area is clear, and running the appliance regularly to keep seals pliable. Using the correct detergent and following the manufacturer’s recommendations can also help maintain optimal performance.

Can I fix the float switch myself, or should I call a professional?

Many homeowners can successfully replace the float switch themselves using the proper tools and guidance. However, if you are uncomfortable with DIY repairs or if the issue persists after replacement, it’s advisable to consult a professional technician for assistance.

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