Admiral Oven Broiler Not Heating Properly: Troubleshootin... | appliancefaults.com

Technical Background:

The oven's Main Control Unit (MCU) controls the broiler element through a relay. When the broiler function is selected, the MCU sends a signal to the relay, closing the circuit and allowing 240V AC to flow to the broiler element. The oven temperature sensor (RTD) provides feedback to the MCU, which adjusts the broiler element's on/off cycle to maintain the set temperature. Voltage paths include the breaker, wiring harness, MCU relay, and the broiler element itself.

Symptoms:

US Homeowner reports the Admiral oven broiler is not getting red hot as it used to, and food is taking longer to broil. The broiler element appears to glow dimly or not at all.

Possible Causes:

Defective Broiler Element
Faulty Oven Temperature Sensor (RTD)
Malfunctioning Oven Control Board (MCU)
Weak or Burned Broiler Relay on Control Board
Loose Wiring Connection to Broiler Element
Incorrect Voltage Supply to the Oven

Solution:

1

Disconnect power to the Admiral oven at the breaker panel.
2

Access the broiler element. Typically, it's located at the top of the oven cavity. You may need a 1/4-inch nut driver to remove any mounting screws.
3

Visually inspect the broiler element for any breaks, blisters, or signs of damage. If visibly damaged, replace the element.
4

Use a multimeter to test the broiler element for continuity. A reading of near zero ohms indicates a good element. An open circuit indicates a faulty element that needs replacement.
5

Check the voltage at the broiler element terminals while the broiler is activated. You should measure approximately 240V AC. If the voltage is significantly lower or absent, investigate the control board and wiring.
6

If the element and voltage are good, test the oven temperature sensor (RTD) with a multimeter. The resistance should vary with temperature. Consult the service manual for the correct resistance values at room temperature and elevated temperatures.
7

Inspect the oven control board for any signs of burned components, especially around the broiler relay. If damaged, the control board may need replacement.

Safety Warning:

Always disconnect power to the oven at the breaker panel before performing any repairs. Use Lock Out Tag Out (LOTO) procedures to prevent accidental energizing of the circuit. The oven operates on 240V AC, which can cause serious injury or death if not handled properly.

Prevention:

Regularly clean the oven interior to prevent food debris from damaging the broiler element. Avoid using abrasive cleaners that can corrode the element. Periodically check the broiler element for any signs of damage. Avoid using the self-clean function excessively as it can put excessive strain on the oven components.

Expert Tip:

Many Admiral ovens have a service mode that allows you to test the broiler relay and other components. Refer to the service manual for your specific model to access and utilize the service mode functions. Typically, you enter this mode by pressing a specific sequence of buttons on the control panel.

Frequently Asked Questions

•What is the typical resistance range of the oven temperature sensor (RTD) at room temperature (70°F)?

The resistance of the RTD varies depending on the specific model, but generally, it will be in the range of 1000-1200 ohms at 70°F. Refer to the service manual for your specific Admiral oven model for the exact specifications.

•How can I determine if the broiler relay on the control board is functioning correctly if I don't have a service manual?

You can test the relay by applying the appropriate voltage (usually 5V or 12V DC) to the relay coil and checking for continuity across the relay contacts when energized. Use a multimeter to check for continuity when voltage is applied. If there is no continuity when energized, the relay is likely faulty.

•Where can I find a replacement broiler element for my Admiral oven?

You can find replacement broiler elements at most appliance parts retailers, both online and in brick-and-mortar stores. Be sure to have your oven's model number handy to ensure you get the correct replacement part. Sites like AppliancePartsPros.com, RepairClinic.com, and Sears Parts Direct are good options.

Admiral Oven Broiler Not Heating Properly: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range of the oven temperature sensor (RTD) at room temperature (70°F)?

•How can I determine if the broiler relay on the control board is functioning correctly if I don't have a service manual?

•Where can I find a replacement broiler element for my Admiral oven?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: