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Kenmore Range vent hood turning on by itself

If your Kenmore range vent hood turns on by itself, the thermostat is the most likely cause. Some range vent hoods include a temperature-sensing thermostat that automatically starts the blower when the hood gets hot, then shuts it off after the temperature drops. Check your owner's manual and wiring diagram to confirm whether this feature is installed. If the blower or lights turn on and off randomly, the range vent hood control board may have burnt relay contacts or an internal short. A worn touchpad can also close the circuit intermittently and send an unintended signal to the control board. Next, test the user control and display board by pressing each control-panel button. Buttons that do not respond correctly can indicate a defective board. The main control board can cause the same intermittent operation, while a shorted control module is less common and should be considered only after testing the touchpad and control panel. Disconnect power before testing or replacing parts, and enter your Kenmore range vent hood model number to find the exact replacement part for your specific appliance.

01 - Kenmore Range Vent Hood Thermostat

If the temperature in the hood gets hot there may be a thermostat that will automatically turn on the vent blower until the temperature cools down. Check the owner's manual and /or the wiring diagram to see if your vent hood has this feature.

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Highly Likely

02 - Kenmore Range Vent Hood Control Board

The control board has relays that send power to the fan and lights. If the contacts in the relays become burnt, or the board is shorting out, they may make contact intermittently. If the fan or lights are turning off and on the control board may be bad.

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Common

03 - Kenmore Range Vent Hood Touchpad

When the touchpad buttons are pressed a circuit is closed sending a signal to the control board. If the button is worn it can cause the circuit to close intermittently, turning on the hood.

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Common

04 - Kenmore Range Vent Hood User Control and Display Board

The buttons on the user control and display board may be only intermittently activating. To determine if the control and display board is defective, try pressing each of the buttons on the control panel. If some of the buttons are not responding correctly, replace the user control and display board.

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Common

05 - Kenmore Range Vent Hood Main Control Board

The main control board has relays that send power to the fan and lights. If the contacts in the relays become burnt, or the board is shorting out, they may make contact intermittently. If the fan or lights are turning off and on, the main control board may be bad.

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Common

06 - Kenmore Range Vent Hood Control Module

The control module receives inputs from the control panel switches to turn the lights and blower on and off. If the control module shorts out, the blower or lights may go on and off randomly. Because this is not a common problem make sure the control panel and switches are tested before replacing the control module.

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Common

Frequently Asked Questions

Why does my Kenmore range vent hood turn on by itself?

Why does my Kenmore range hood fan keep turning on and off?

Could the Kenmore range vent hood control board be causing the problem?

What should I check if my Kenmore range hood lights turn on by themselves?

How do I find the correct Kenmore range vent hood part?

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