Hotpoint Oven Bottom Element Not Working: Troubleshooting... | appliancefaults.com

Technical Background:

The oven's electronic control board (MCU) controls the heating elements using relays. A separate relay usually controls the bake (bottom) and broil (top) elements. The MCU relies on the oven temperature sensor to regulate the element operation, cycling it on and off to maintain the set temperature. Voltage paths from the breaker panel supply 240V AC, split into two 120V AC legs, to the MCU. The MCU directs 120V AC to the appropriate element.

Symptoms:

The homeowner reports that the bottom heating element in their Hotpoint oven is not working, preventing the oven from reaching the set temperature for baking. However, the broiler element is functioning normally.

Possible Causes:

Burned out bottom heating element.
Faulty oven temperature sensor (RTD or Thermistor).
Defective oven control relay on the electronic control board (MCU).
Wiring issue between the control board and the bottom heating element.
Problem with the safety thermostat or thermal fuse.

Solution:

1

Disconnect power to the Hotpoint oven at the breaker panel. Verify 0V AC at the oven receptacle using a multimeter.
2

Locate the bottom heating element inside the oven cavity. Visually inspect for breaks, blisters, or other signs of damage.
3

Using a 1/4-inch nut driver, disconnect the wires from the bottom heating element terminals. Test the element for continuity using a multimeter. A reading of infinite resistance (open circuit) indicates a failed element.
4

Check the oven temperature sensor (RTD or Thermistor) resistance using a multimeter. Compare your reading with the oven's service manual specifications at room temperature (approx. 75°F). Replace if out of tolerance.
5

Inspect the oven control relay on the electronic control board. Look for burned spots or other visual damage. Replacing the control board may be necessary.
6

Check the wiring harness between the control board and the bottom heating element for loose connections or damaged wires. Use a multimeter to check for continuity of the wires.
7

If the safety thermostat or thermal fuse is tripped, it will prevent the element from heating. Replace the fuse and investigate the root cause of overheating.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lock out the breaker panel to prevent accidental re-energizing of the circuit. Ovens operate at high voltage (120V AC and 240V AC), which can cause serious injury or death.

Prevention:

Regularly clean the oven to prevent food buildup around the heating element, which can cause premature failure. Avoid using excessive force when cleaning around the element. Periodically inspect the element for signs of damage.

Expert Tip:

Many Hotpoint ovens have a service mode. Typically, holding the 'bake' and 'broil' buttons simultaneously for a few seconds will enter the service mode, displaying error codes or allowing diagnostic tests. This can help pinpoint the issue more quickly. Check your service manual for the exact procedure for your model.

Frequently Asked Questions

•What resistance should I expect to see on a working bottom heating element?

The resistance of a typical oven heating element is between 15 and 30 ohms. However, this can vary depending on the wattage of the element. Consult the oven's service manual for the specific resistance value for your model.

•How do I access the electronic control board on my Hotpoint oven?

The electronic control board is usually located behind the oven's control panel. You'll need to remove the control panel by unscrewing the screws holding it in place. Be careful when handling the control board, as it contains sensitive electronic components.

•Where is the oven temperature sensor located and how do I test it?

The oven temperature sensor is typically located inside the oven cavity, near the top. It's usually a thin, metal probe. To test it, disconnect it from the control board and measure the resistance with a multimeter. Compare the resistance reading with the values in the service manual at different temperatures.

Hotpoint Oven Bottom Element Not Working: Troubleshooting & Fix

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What resistance should I expect to see on a working bottom heating element?

•How do I access the electronic control board on my Hotpoint oven?

•Where is the oven temperature sensor located and how do I test it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: