Whirlpool AccuBake Oven Temperature Too High:... | appliancefaults.com

Technical Background:

The Whirlpool AccuBake system uses a temperature sensor (RTD) to monitor the oven temperature. The RTD sends a signal to the oven control board (MCU), which then controls the heating element via a relay. The MCU uses the RTD input to control a 120V AC relay to cycle the bake element.

Symptoms:

The oven is running too hot, causing food to burn even when set to the correct temperature. The displayed temperature might also be inaccurate.

Possible Causes:

Faulty oven temperature sensor (RTD).
Malfunctioning oven control board (MCU).
Stuck oven relay.
Incorrect oven calibration setting.
Issue with wiring harness.
Defective heating element.

Solution:

1

Disconnect power to the oven at the breaker panel.
2

Locate the oven temperature sensor (RTD) inside the oven cavity. Use a 1/4-inch nut driver to remove it.
3

Use a multimeter to measure the resistance of the RTD. At room temperature (70°F), it should read approximately 1080 ohms. Replace if significantly different.
4

Inspect the oven control board (MCU) for any burned components or swollen capacitors.
5

Check the oven relay. Use a multimeter in continuity mode to check if the contacts are stuck closed. Replace if necessary.
6

Verify the oven temperature calibration setting. Refer to the user manual for adjustment instructions.
7

If the above steps do not resolve the issue, consider replacing the oven control board.

Safety Warning:

Disconnect power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) the breaker panel. High voltage is present when the appliance is powered on.

Prevention:

Regularly clean the oven to prevent food debris from affecting the temperature sensor. Avoid using abrasive cleaners that could damage the sensor. Check the RTD every 2 years to make sure it has not drifted.

Expert Tip:

Some Whirlpool AccuBake models have a service mode. To access, press and hold the Bake and Broil buttons simultaneously for 3 seconds. This may display error codes or allow for calibration adjustments.

Frequently Asked Questions

•What is the expected resistance of the RTD sensor at different temperatures?

The RTD resistance changes linearly with temperature. A resistance table can be found in the service manual or online. As a general guide at 350°F the RTD should read 1500-1600 ohms.

•How do I access the oven control board on my Whirlpool AccuBake oven?

Typically, you need to remove the top panel of the oven. This may require removing screws from the rear of the unit. Once the top panel is removed, the control board should be accessible.

•Where can I find replacement parts for my Whirlpool AccuBake oven?

Replacement parts can be found at appliance parts retailers, both online and in local stores. Make sure to have the model number of your oven handy to ensure you get the correct parts.

Whirlpool AccuBake Oven Temperature Too High: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the expected resistance of the RTD sensor at different temperatures?

•How do I access the oven control board on my Whirlpool AccuBake oven?

•Where can I find replacement parts for my Whirlpool AccuBake oven?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: