Wolf Oven Error Code 240: Broil Element Circuit Fault... | appliancefaults.com

Technical Background:

The MCU (Microcontroller Unit) on the oven's control board monitors the broil element circuit. When the broil function is selected, the MCU energizes the broil element relay. The MCU expects to see a specific current draw through the broil element. If the current is outside the expected range (too high, too low, or no current), the MCU triggers error code 240.

Symptoms:

US homeowners typically report the oven not heating during the broil cycle, or the oven displaying error code 240. They may also notice uneven cooking or a complete failure of the broil function.

Possible Causes:

Defective broil element
Faulty broil element relay on the control board
Wiring harness issue between the control board and broil element
Loose connection at the broil element or control board
Tripped thermal cutout (high limit thermostat)
Damaged oven temperature sensor impacting broil function

Solution:

1

Disconnect power to the oven at the breaker panel. Verify no voltage is present using a multimeter.
2

Locate the broil element terminals inside the oven cavity. Visually inspect for any signs of damage such as breaks, burns, or corrosion.
3

Disconnect the wires from the broil element terminals. Using a multimeter, measure the resistance of the broil element. A typical broil element should read between 15 and 30 ohms. An open circuit (OL) indicates a failed element.
4

If the broil element tests good, check the wiring harness between the broil element and the control board for continuity and shorts to ground. Use a multimeter to perform these tests.
5

Locate the broil element relay on the control board. Inspect the relay for any signs of damage, such as burnt contacts.
6

With power disconnected, check the high-limit thermostat (thermal cutout) near the broil element. It should have continuity. If it is open, replace it. Resetting it might work temporarily but indicates an underlying issue.
7

If all components test good, the control board is likely faulty and needs replacement. This often requires licensed technician calibration after system.

Safety Warning:

WARNING: Electrical shock hazard! Disconnect power to the oven at the breaker panel before performing any troubleshooting. Lock Out/Tag Out (LOTO) procedures must be followed. The oven contains high voltage components that can cause serious injury or death.

Prevention:

Regularly inspect the oven for any signs of wear or damage. Avoid using abrasive cleaners on the broil element. Ensure proper ventilation around the oven to prevent overheating. Avoid placing items directly on the broil element.

Expert Tip:

Some Wolf ovens have a service mode that allows you to manually activate the broil element for testing purposes. Consult the service manual for your specific model to access this mode. This can help isolate whether the issue is with the control board or the broil element circuit.

Frequently Asked Questions

•What is the typical lifespan of a Wolf oven broil element?

The lifespan of a Wolf oven broil element can vary depending on usage and maintenance, but typically ranges from 5 to 10 years. Frequent use at high temperatures can shorten its lifespan.

•How do I properly clean the broil element without damaging it?

Never use abrasive cleaners or scrub brushes on the broil element. A damp cloth can be used to gently wipe away any food residue. Ensure the element is completely cool before cleaning.

•Where can I find the service manual for my specific Wolf oven model?

You can usually find the service manual on the Wolf website, or by contacting Wolf customer service with your model number. Some third-party appliance parts websites also offer service manuals for download.

Wolf Oven Error Code 240: Broil Element Circuit Fault Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical lifespan of a Wolf oven broil element?

•How do I properly clean the broil element without damaging it?

•Where can I find the service manual for my specific Wolf oven model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: