How to test the voltage on a Whirlpool range that won’t heat

If your Whirlpool electric range oven isn’t heating, the problem may be with the voltage. Before you call for a repair technician, you can quickly test the part yourself to determine if it’s the source of the issue. By following the steps outlined in this guide, you’ll have the knowledge to troubleshoot the problem and get your appliance back up and running.

If you find out that you need any replacement parts for your appliance, 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.

The troubleshooting information in this article is based on model WFC340S0AB 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.

Tools and materials

• Multimeter
• Phillips head screwdriver

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 attempting any maintenance or replacement work. This keeps you safe by preventing any risk of injury from electric shock.
• Wear insulated work gloves to protect your hands from sharp metal parts, pinching hazards and debris.
• Take your time and don’t rush while working to prevent accidents and personal injuries.
• Work in a well-lit area so you can clearly see and access the interior parts.
• Clear your workspace of clutter and other obstacles. Keep children and pets away from the work area.
• Never work on internal parts with bare wet hands. Make sure the work area is completely dry.
• Check your user manual to see if there are specific installation or safety instructions for your part or appliance. 
• Be gentle when handling or removing parts. Excessive force might damage the appliance or cause injury.
• Wear safety glasses when working with chemicals, dust or cleaning large debris to prevent injury. 
• If the appliance has recently been used, give it plenty of time for any heating parts to cool down before working on it. 
• Take pictures or make a note of wiring terminals or other connections before disconnecting to prevent any problems with reassembly.
• 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.

Testing steps

LIVE VOLTAGE WARNING: For this test, the appliance needs to be plugged in and powered on. Please be very careful to protect yourself from electric shock, which has the potential to cause serious injuries. Don’t ever test live voltage if you’re uncomfortable using a multimeter.

1. Remove the rear terminal block cover.
2. Set your multimeter to the AC voltage (VAC) setting.
3. Place one multimeter probe on the white terminal on the terminal block.
4. Place the other probe on the black terminal on the terminal block.
5. You should see a reading of approximately 120 VAC.
6. Move one probe to the red terminal on the terminal block, keeping the other probe on the white wire.
7. You should see a reading of approximately 120 VAC.
8. Move one probe to the red terminal and the other probe to the black terminal.
9. You should see a reading of approximately 240 VAC.
10. Inspect the power cord and wiring at the terminal block for any signs of damage, such as burn marks or broken wires. Replace any damaged components.
11. If you are not getting the expected voltage readings, the issue likely lies with the house wiring, not the range.
12. Reposition the terminal block cover and secure it with the Phillips head screws.

Additional information

Thank you for reading! We hope this guide helped you get your Whirlpool range working again.

If you have any other appliance repair needs or projects, don’t hesitate to explore our other troubleshooting guides and videos. 

If you need replacement parts or some extra help with ordering them, grab your model number and head over to AppliancePartsPros.com, where you can chat with a pro, read our DIY blog and more.

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