Test & replace the infinite switch in your Whirlpool range: A step-by-step guide

We’ve all experienced the frustration of an oven or stove top that won’t turn on. Before you call the appliance pros, try this simple do-it-yourself fix to test and replace the infinite switch in your Whirlpool range.

If you need any replacement parts for your Whirlpool range, you can enter your model number at AppliancePartsPros.com to order them. Most orders arrive in just two business days, and we have thousands of free guides to show you how to install your new parts.

Important: The troubleshooting information in this article is based on model WFC340S0AB0 and may not apply to your specific appliance model. While we strive to offer helpful advice for DIY appliance repairs, variations in models and configurations can lead to differences in troubleshooting steps, error codes and part replacements. For the most accurate guidance, we strongly recommend consulting the technical sheet for your specific appliance model.

What you need

• 1/4 inch nut driver
• Multimeter

Important: The specific tools required may vary depending on the model of your appliance and the type of fasteners used on it. Always consult the user manual or refer to any specific instructions provided by the manufacturer for the recommended tools for your appliance model.

Safety precautions

When working on any appliance, remember to keep safety first. Here are some tips to keep in mind:

• Always power off and unplug your appliance or switch off the circuit breaker before you attempt any maintenance or replacement work. This keeps you safe by eliminating any risk of electric shock.
• If the appliance has recently been used, give it plenty of time to cool down before working on it.
• Take your time while working to prevent accidents and personal injuries. Rushing is the enemy of precision.
• Work in a well-lit area so you can see and access appliance parts.
• Keep your workspace free of clutter and other obstacles. Keep children and pets away from the work area.
• Never work on internal parts with wet hands. Make sure the work area is completely dry.
• Check the user manual to see if there are specific installation or safety instructions related to your appliance or replacement part.
• Be gentle when handling or removing parts. Excessive force might damage the appliance or cause personal injury.
• Wear insulated work gloves to protect your hands from sharp metal parts and debris.
• When working with wires, avoid touching any exposed wires or terminals. If you need to touch a wire, use a non-conductive tool or wear insulating gloves to prevent electrical shock.
• Always take photos or make a note of wiring terminals or other connections before disconnecting them to make reassembly easier.
• Don’t test live voltage with a multimeter if you’re unfamiliar with how to prevent short-circuiting.
• Consider wearing safety glasses and/or a dust mask when working with chemicals, dust or a large amount of debris to prevent irritation or injury.

Read more: Gas VS Electric: Which Range Is Right For You?

How to test & replace the infinite switch on a Whirlpool range

Step 1: Test the infinite switch

1. Lift the cooktop up at the front and secure it with the top panel brace bars.
2. Use a 1/4 inch nut driver to remove the screws from the user panel.
3. Pull the user panel forward.

4. Take a picture of the wire placement on the infinite switch for reference.
5. Remove the orange wires from the switch.
6. Set your multimeter to continuity mode (sideways Wi-Fi symbol).
7. Turn the switch to the “ON” position.
8. Test continuity from terminal L1 to terminal H1, and from terminal L2 to terminal H2 using the multimeter probes.
9. If no continuity is found, the switch has failed. If continuity exists, another issue is causing the problem.

Step 2: Replace the faulty infinite switch

1. Remove the knob from the faulty switch.
2. Unscrew the mounting screws and pull the infinite switch away from the panel.
3. Position the new switch in the same orientation as the old one.
4. Secure the new switch with the screws removed earlier.
5. Reconnect the wires following the reference photo.

Step 3: Reassemble

1. Push the user panel back into place.
2. Secure the user panel with the 1/4 inch screws.
3. Replace the knob onto the new switch.
4. Unlock the brace bars and carefully lower the cooktop.
5. Replace the heating element.
6. Plug the range back in or flip the breaker back on to restore power.

Read more: Change out a bad surface element switch on an electric Whirlpool range: A complete guide

More information

Thanks for stopping by! We hope this guide helped you test and replace the infinite switch in your Whirlpool range.

If you run into any issues, just give us a call at 1-877-477-7278 or start a chat with a pro on our website so we can help you through it. We’ve got many more troubleshooting and repair guides on our DIY blog and YouTube channel, plus all the parts you need to do it yourself at AppliancePartsPros.com. 

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