Whirlpool AccuBake Oven Burning Bottom of Cookies:... | appliancefaults.com

Technical Background:

MCU logic and voltage paths.
The AccuBake system relies on the main control unit (MCU) to regulate the heating elements. The MCU receives temperature feedback from the oven sensor (RTD) and adjusts the voltage to the bake and broil elements to maintain the set temperature. Incorrect sensor readings or faulty MCU logic can lead to overheating and burning.

Symptoms:

US homeowner observations.
Burning the bottom of cookies while the top remains undercooked or properly cooked. Cookies may also be burning significantly faster than the recipe suggests.

Possible Causes:

Inaccurate oven temperature.
Baking sheet issues.
Incorrect rack position.
Faulty oven sensor.
Malfunctioning oven control board.

Solution:

1

Calibrate the oven temperature using the oven's control panel settings. Refer to the owner's manual for instructions.
2

Check the oven sensor resistance with a multimeter. Disconnect power. Remove the sensor. At room temperature (approximately 75°F), it should read approximately 1080 ohms. Replace if outside this range.
3

Inspect the baking sheet. Use a light-colored, non-insulated baking sheet. Dark or insulated sheets can cause excessive bottom browning.
4

Adjust the rack position to the middle rack. This promotes even heat distribution.
5

Check the voltage to the bake element using a multimeter while the oven is on a bake cycle. After ensuring LOTO, access the back of the range and check the voltage at the bake element terminals. Should read 240V AC when the bake element is energized.
6

Inspect the oven control board for signs of damage, such as burnt components or bulging capacitors. Replace if necessary.
7

Visually inspect the bake element for damage.

Safety Warning:

LOTO and high voltage warning.
Always disconnect power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) the breaker at the breaker panel. High voltage (240V AC) is present in the appliance. Use caution when working near electrical components.

Prevention:

Specific maintenance.
Regularly check the oven temperature with an oven thermometer. Clean the oven sensor to remove any buildup. Avoid using dark or insulated baking sheets. Keep the oven calibrated per the manufacturer's instructions. Annually inspect the bake element.

Expert Tip:

Trade secret or service mode sequence.
The AccuBake system has a diagnostic mode. To enter, typically you need to press specific button sequences. Consult the service manual for the exact procedure. This mode can reveal error codes that are not normally displayed, assisting in diagnosis.

Frequently Asked Questions

•How do I calibrate my AccuBake oven?

Refer to your owner's manual for specific instructions on how to access the temperature calibration settings. Typically, it involves pressing a combination of buttons on the control panel.

•Where is the oven sensor located?

The oven sensor is usually located inside the oven cavity, at the back, near the top. It is a small probe that is attached to the oven wall with screws.

•How do I safely check the voltage to the bake element?

Ensure you have proper safety equipment and training. Disconnect power at the breaker panel. Then, use a multimeter to test for voltage at the bake element terminals. Voltage should read 240V AC when the bake element is energized during a bake cycle. Wear safety glasses and insulated gloves when performing this test. If you're not comfortable, call a professional appliance technician.

Whirlpool AccuBake Oven Burning Bottom of Cookies: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I calibrate my AccuBake oven?

•Where is the oven sensor located?

•How do I safely check the voltage to the bake element?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: