How to Test Element in Oven? Bake & Broil Coils

Introduction

Learning how to test element in oven is useful when an oven heats unevenly, stays cold, trips a breaker, or shuts off after a few minutes. Most electric ovens use a bake element at the bottom, a broil element at the top, and sometimes a third element for convection baking or warming. A failed element is only one possible cause, so the safest approach is to inspect the heating system, measure resistance with a multimeter, and confirm the result with a controlled heat test.

This guide focuses on electric bake and broil coils. Gas ovens do not use heating elements, although a gas range can include an electric igniter that requires a different testing procedure. Always follow the wiring diagram, service manual, and manufacturer instructions for your specific oven when they differ from the general guidance below.

Table of Contents

• Introduction
• How Oven Heating Elements Work
• Tools and Safety
• Preparing the Oven for Testing
• Visual and Mechanical Inspection
• Step-by-Step Multimeter Test
• Interpreting Test Results
• Thermal Function Test
• Comparison of Testing Methods
• Hidden Elements and Convection Ovens
• Troubleshooting Based on Results
• Tips and Best Practices
• Common Testing Mistakes
• Frequently Asked Questions
• Conclusion

How Oven Heating Elements Work

An electric oven element is a high-resistance metal coil. Electricity flows through it, creating intense heat that warms the oven cavity and cooking food. In a traditional oven, the bake element is positioned beneath the oven floor, while the broil element is near the top. The broil unit may use one element or a pair of coils.

A normal element should have continuity and a stable resistance value when measured with a multimeter. It will not necessarily display zero ohms. A reading such as 20, 30, or 45 ohms can be completely normal. The correct range depends on the element’s length, diameter, wattage, voltage, and design. A manufacturer’s specified resistance is more reliable than a general range.

The control system may use mechanical switches, electronic relays, a selector switch, a control board, or a combination of these parts. When a coil opens, the oven may continue to receive power but will not heat. Some electronic ovens also detect abnormal resistance and display an error code or shut the system down.

Tools and Safety

The most useful tool is a digital multimeter with a resistance or ohm setting. A basic continuity-only multimeter can identify an obviously open coil, but a meter that displays resistance provides more diagnostic information. You may also need a flashlight, insulated screwdrivers, needle-nose pliers, and the model’s wiring diagram or service manual.

Electrical ovens operate at 240 volts in North America and other 230–240-volt systems. A short circuit or contact with energized parts can cause severe shock, fire, or electrocution. Follow these precautions:

• Unplug the oven or switch off the breaker before removing panels or touching wiring.
• Verify that the breaker is off with a properly rated tester before beginning.
• Do not assume a disconnected capacitor is harmless; control boards can retain dangerous voltage.
• Avoid testing resistance through the entire oven circuit because a control board or other parallel component can distort the result.
• Keep metal tools, jewelry, moisture, and conductive liquids away from terminals.
• Replace panels and shields exactly as they were before returning power.
• If wiring instructions are unclear or you are not comfortable with high-voltage appliances, contact a qualified technician.

Preparing the Oven for Testing

Begin by identifying the exact model and locating the correct part and wiring information. The model number is commonly found on a label inside the door frame, on the side of the oven, or near the control panel. Look up the element’s manufacturer, part number, wattage, volts, physical dimensions, and connection style.

Empty the oven and remove removable racks, pans, foil, and packaging. This reduces the chance of damaging cookware and gives you a clear view. Clean debris from the bottom or top element only after the oven is cool. If you find grease buildup, clean it carefully because food residue can overheat and damage an element.

Access to the terminals varies by oven. Some are beneath a removable metal or ceramic cover at the rear. Others are accessible through a panel at the front, beneath the cooktop, or from inside the cavity. Remove only the fasteners specified by the service instructions. Retain the screws and brackets because they may be different lengths or have special washers.

Before disconnecting anything, take a photo of the wire positions or make a simple sketch. Oven wiring diagrams can help distinguish a common terminal from an element-specific terminal. Photographic reference is especially useful if the wires have similar colors or if the oven includes several heating circuits.

Visual and Mechanical Inspection

Inspect the element before using a meter. A damaged element often shows a visible break, split, darkened section, or separated coil. Signs of overheating can include blistering, discoloration, swelling, warping, or a burned odor. Look particularly closely at the spots where the element bends or where it passes through a porcelain socket.

Check that the element is not rubbing against the oven floor, wall, fan cover, rack support, or another component. Constant contact can flatten, nick, or break the coil. An element that has shifted out of position may be intact electrically but still damaged.

Inspect the terminal blocks and connectors as well. Loose, corroded, discolored, or heat-damaged terminals can interrupt power even when the element is good. Do not use an element that has been repaired with a twist, solder bridge, electrical tape, or unknown material. Replace an element if its coil is cracked, broken, badly distorted, or arced.

Step-by-Step Multimeter Test

Testing the Bake Element

1. Turn off all power. Unplug the oven or switch off its breaker. Confirm that the power source is off before opening the oven.
2. Remove the access panel. Disconnect the oven’s main electrical supply if required by the model instructions. Gain access to the bake element terminals.
3. Label the wires. Note each wire’s position. Do not rely solely on color because wire functions can differ between manufacturers.
4. Loosen the terminal connections carefully. Avoid pulling on the element leads or allowing the meter probes to bridge adjacent terminals.
5. Set the multimeter to resistance. Select the ohms symbol. If the meter has multiple ranges, use the range recommended by its manual.
6. Discharge the meter leads. Touch the probes together and confirm the display reads zero ohms or a low value. A nonzero lead-resistance reading should be subtracted when it is significant.
7. Measure between the two element terminals. Place one probe on each screw terminal, metal connector, or accessible end of the element lead. Do not place both probes on the same screw.
8. Wait for the reading to stabilize. A large cold element can produce a temporarily changing value. Record the final stable resistance.
9. Reverse the probes. A reliable resistance measurement should remain approximately the same. Polarity does not change the result of a healthy heating element.
10. Compare the value. Determine whether the reading is in the manufacturer’s range, open, or abnormally low. A healthy element generally provides continuity, but an unusually low reading can indicate internal damage.
11. Reconnect and reassemble. Restore wires to their recorded positions, tighten terminals, reinstall shields, and replace the access panel before restoring power.

Testing the Broil Element

The procedure is nearly identical for the broil element. Disconnect power, remove the appropriate cover, disconnect the element leads, and measure resistance directly across its two terminals. Some broil assemblies contain two separate coils. Test each coil individually, because one open coil can prevent the entire unit from heating.

Do not assume a cold broil element is defective. Broil elements often glow deep red, bright orange, or occasionally nearly white when energized. A shielded or enclosed broil element may not become clearly visible, so listen for the thermostat or control board to click and use an oven thermometer to evaluate actual heat.

If a two-coil broil unit has two resistance values, the manufacturer’s diagram or parts information may show whether they are intended to operate together or in sequence. Do not combine or bridge a failed element. A replacement must match the original assembly and its controls.

Interpreting Test Results

Interpret a multimeter reading by considering continuity, resistance, appearance, and wiring together. There is no single universal resistance value for every oven element. A smaller, shorter, or higher-wattage element may legitimately have a different reading from a larger one.

An open circuit, often displayed as “OL,” “1,” or an unchanged meter indication, usually means the element is broken. If the wiring and terminals are sound, replacement is likely required. Open circuits can also result from a disconnected terminal, a broken internal lead, or corrosion, so confirm that the meter is actually reaching the element.

A reading within the manufacturer’s range usually indicates that the element is electrically continuous. That does not prove it will heat, because a weakened element can pass a basic resistance check yet have hot spots or poor performance. Visual damage or a temperature test may still justify replacement.

An unusually low reading may indicate internal damage, a shorted element, contamination, or a measurement error. For example, a reading close to zero across a long bake element is less expected than a reading in the tens of ohms. Confirm the result by disconnecting the wiring and measuring the element directly. Do not power the oven if a short or damaged terminal is suspected.

A changing or unstable reading can result from poor probe contact, oxidized terminals, a partially broken coil, or a meter that has not settled. Clean or firmly seat the probes and repeat the measurement. If the value continues to fluctuate, have the meter checked or replace it with a known-good unit.

Thermal Function Test

After a proper resistance test and visual inspection, a controlled heat test can confirm whether the element energizes. First reconnect the wiring, restore the access panel, and plug the oven in or turn on the breaker. Make sure all shields are installed and no wires are exposed.

Place an oven thermometer in the center of the empty oven. Set the oven to bake at approximately 350°F or 175°C and allow enough time for the temperature to stabilize. Normal ovens may require 10 to 20 minutes or more. A newly installed thermometer can also take time to react, so compare the trend rather than judging only the first reading.

A visible bottom element may glow orange or red during bake, although some elements remain less obvious. If the oven reaches and holds temperature, the bake circuit is probably operating. If the control display changes normally but the oven remains cold, a thermostat, control board, relay, wiring, or element failure may be preventing the cycle.

For the broil function, use the oven’s normal high or broil setting. Keep the door brief and use caution: intense heat can burn you, and some broil elements begin heating almost immediately. Do not leave the oven unattended. In a clearly visible installation, the broil coils should become red or orange. With a hidden element, listen for the relay click, check whether the cavity warms, and compare readings over several minutes.

If the element is open, the cavity may stay cold or slowly cool. If the element glows but the oven does not reach temperature, the element may be functional while the temperature-sensing or control system is faulty. If the oven heats with the door open but fails to regulate temperature, a limit thermostat or temperature sensor may be defective.

Comparison of Testing Methods

Different testing methods answer different questions. Use them in sequence rather than relying on a single observation.

Test method	What it shows	Best use	Main limitation
Visual inspection	Breaks, cracks, corrosion, arcing, loose mounting, or overheating damage	First check before disconnecting the element	Some electrically sound elements still heat poorly
Multimeter resistance	Whether the element is open, within specification, or abnormally low	Most reliable electrical test with power off	Results may be misleading if measured through a control board or in parallel
Continuity beep	A quick indication that a complete conductive path exists	Fast screening for an open coil	Usually does not provide a meaningful resistance value
Glow observation	Whether current is reaching the visible coil	Quick confirmation after a successful resistance test	Many hidden, shielded, or control-switched elements are not visible
Oven thermometer	Whether the cavity actually heats and maintains temperature	Verifying the complete heating system	Takes time and may reflect a thermostat or sensor problem rather than an element problem
Service wiring diagram	Pin assignments, control circuits, common terminals, and component sequence	Troubleshooting electronic or multi-function ovens	Models can differ significantly even within the same product line

Hidden Elements and Convection Ovens

Many modern ovens use a hidden bake element below a metal or ceramic floor. The element is difficult or impossible to see, so lack of a glow does not prove failure. These models may have a broil element, convection fan, fan motor, and electronic controls that all affect heat circulation.

If the oven has a fan and does not heat in convection mode, test the normal bake cycle first. Check whether the fan spins when the door is open, if the model is designed to run the fan during that mode. Never operate the oven with the fan cover removed or with a fan obstruction present.

Some ovens have separate upper and lower bake elements. Measure each element independently and compare both readings with the service information. If one is open, the control may switch the operating heat from the failed element to the other one, or the oven may display an error or fail to preheat.

Do not remove a concealed floor or rear panel solely to check for a glow. Those parts can expose sharp edges, wiring, insulation, or hot surfaces. Use the designed access points, and replace concealed elements as complete assemblies when required.

Troubleshooting Based on Results

If the bake element is open, inspect the terminal block and connector. A loose or burned terminal may have damaged the wiring without breaking the element. If the terminals and wiring are sound, replace the element with an exact or manufacturer-approved equivalent. Match the voltage, wattage, dimensions, terminal arrangement, and mounting style.

If the element has normal resistance but the oven does not heat, test whether the control commands the element. A technician may check the selector switch, electronic control, relay, thermal fuse, wiring, and thermostat using the model’s diagram. A control board can display a normal set temperature while failing to energize the heating circuit.

If the oven preheats but cools unexpectedly, listen for a relay click and determine whether the element stops glowing. A failed thermal fuse or thermostat may open the circuit, while a temperature sensor can give the control board incorrect information. If the oven runs continuously and becomes dangerously hot, disconnect the power and have the thermostat, sensor, control board, or cooling-fan system checked.

If the breaker trips, stop repeated testing and look for a shorted element, damaged wiring, a loose metal object, moisture, or a failing control component. Do not reset the breaker several times or bypass a safety device. A repeated trip is a reason to isolate the fault or call a qualified repair professional.

Tips and Best Practices

• Record the model number before starting. It makes it easier to find the correct replacement and wiring diagram.
• Photograph the original wiring. This prevents terminals from being returned to the wrong positions.
• Measure the element itself. A resistance reading taken through the oven’s control circuit may be inaccurate.
• Compare against manufacturer specifications. Generic resistance ranges are only a rough reference.
• Use a stable, well-lit work area. Small terminals and hairline cracks are easier to miss in poor conditions.
• Allow the oven to cool fully. Residual heat can cause burns and may affect resistance measurements.
• Do not use foil or cookware to cover an element. Blocking heat can create overheating and fire hazards.
• Keep the oven empty during the first heat test. This makes it easier to observe temperature behavior and prevents accidental damage.
• Install a new element before closing the oven. The replacement should be firmly supported and clear of neighboring parts.
• Test the complete system after replacement. A new element may still fail to heat if the control or safety circuit is defective.

Common Testing Mistakes

The most serious mistake is probing the oven while it is connected to power. A meter set incorrectly or a damaged wire can create a hazardous short. Another common error is relying only on whether the element glows. Hidden elements, controls, and low-power elements may not glow visibly, and a visible glow does not establish that the oven is regulating temperature correctly.

Testing through the entire control circuit is another frequent problem. Modern control boards may not provide a simple continuity path, and a reading taken through them can look wrong even when the element is healthy. Disconnect the element leads and measure directly across the element for the most reliable result.

Some people mistake a normal resistance value for a fault because it is not zero ohms. An element is designed to resist electricity. Replacing a working 30-ohm element simply because the meter does not display zero is unnecessary. Conversely, a meter that beeps for continuity can indicate only a complete path; it does not prove that the element’s resistance is correct or that it heats evenly.

Do not ignore a damaged terminal, a melted connector, or a burnt wire. A new element installed with defective connections can fail immediately or create further damage. Do not bypass a thermostat, thermal fuse, or other safety component to make the oven heat. These parts protect the oven and should be diagnosed rather than defeated.

Finally, avoid repeated heating tests if there is arcing, smoke, a burning plastic odor, exposed wiring, or breaker activity. Turn off the power immediately. Those symptoms require correction before the oven is energized again.

Frequently Asked Questions

What resistance should an oven element read?

There is no single required value for every oven. Many bake elements measure roughly in the tens of ohms, while some broil elements or specialized elements may be outside that broad range. Use the manufacturer’s specification whenever possible. A stable reading within the specified range is generally more meaningful than a universal number.

Why does my oven element not glow?

The element may be hidden behind a metal floor, it may not have enough time to heat, or the control circuit may not be energizing it. A failed thermostat, thermal fuse, relay, selector switch, control board, or terminal can also prevent a glow. Measure resistance directly and perform a controlled temperature test rather than judging the oven by visibility alone.

What setting should I use on a multimeter?

Set the meter to resistance, often marked with the ohm symbol, and use a range appropriate for the appliance. A 200-ohm range is often useful for many oven elements, but follow your meter’s instructions. Do not use the current or voltage setting for the resistance test. If the display shows “OL” or does not change, the circuit is open.

Can I test an oven element with the power on?

No. Resistance must be measured only after the oven is unplugged and the breaker is off. Live testing should be performed by a qualified technician using the correct high-voltage equipment and safety procedures. A glowing element should be observed only after the oven is fully reassembled and operating under normal controls.

Is a cracked oven element always broken electrically?

A visible crack or break usually means the element should be replaced, but a small surface mark does not always create an open circuit. Inspect the damage, check the terminal area, and measure resistance directly. If the element is cracked, split, blistered, or distorted, replacing it is safer than trying to operate it until it fails completely.

The element glows, but the oven does not get hot. What should I check?

If the element glows and the oven is heating, the element may be working even if the control system is not regulating temperature correctly. Check the oven thermometer, temperature sensor, thermostat, cooling fan, electronic control, and wiring. On some models, the broil element can glow while the bake thermostat prevents the cavity from reaching the selected temperature.

Can I replace an oven element myself?

Replacement is feasible for some experienced do-it-yourself users, but it involves 230–240-volt wiring and high-heat components. If you cannot safely identify the correct element, interpret the wiring, and restore all panels, have a technician perform the repair. Always use the correct part number and match the voltage, wattage, physical dimensions, and terminals.

Conclusion

To learn how to test element in oven, begin with a visual inspection, disconnect power, and measure resistance directly across the bake or broil element. A broken coil usually shows an open circuit, while a normal reading must be compared with the manufacturer’s specifications. A heat test with an oven thermometer can then confirm whether the element energizes and whether the oven reaches temperature.

Remember that an element can be electrically continuous and still be damaged visually, and a lack of visible glow does not automatically mean a concealed element is bad. If the resistance is normal but the oven still does not heat, investigate the thermostat, sensor, relay, control board, and wiring. Replacing the correct part and using safe testing practices is the most reliable way to restore dependable oven heating.