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My Oven Fan Won't Turn Off

When an oven fan won't turn off, first allow for a normal cooling-down period. The cooling fan can run for more than an hour after the oven is shut off, especially after a high-temperature cycle. If the oven fan keeps running after the oven has cooled, the oven control board is a likely cause because a failed relay can send continuous voltage to the fan circuit, although the oven thermostats should be checked before replacing the board. A stuck relay on the control board or main control board can cause the same problem. Next, test the high-limit thermostat with a multimeter for proper continuity. A defective thermostat may continue sending power to the fan after the oven cools, while a faulty high-limit thermostat can also keep the fan running. Always disconnect power before testing or replacing parts. This troubleshooting applies to range, stove, and wall oven fan problems, including an oven fan not turning off or an oven fan that keeps running. Enter your model number to find the exact replacement oven control board, main control board, high-limit thermostat, or thermostat for your specific appliance.

01 - Range/Stove/Oven Oven Control Board

The oven control board has relays that regulate power to the bake, broil and fan circuits according to the user settings and sensor input. If one of these relays shorts out, the control board may send continuous voltage to the oven fan. However, this is rarely the case. Before replacing the control board, first check the oven thermostats. If an oven thermostat fails, it may cause the oven fan to run continuously.
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Top Solution

02 - Range/Stove/Oven Control Board

If the oven fan is not shutting off, a relay on the control board may be stuck closed sending constant power to the oven fan. Check the wiring diagram first before replacing the board. Control boards are often misdiagnosed.
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Common

03 - Range/Stove/Oven Main Control Board

The main control board has relays that send voltage to the fan motor. If one of the control board relays shorts closed, the control board may send continuous voltage to the fan. If the fan continues to run after the oven is turned off and cooled down, the main control board is likely defective. If the control board is defective, replace it.
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Common

04 - Normal Cooling Down Period

The oven cooling fan may run well over an hour after the oven is shut off to cool down the components. The hotter the temperature was set the longer the cooling fan needs to run to cool off the oven. This is normal.
Less Common

05 - Range/Stove/Oven High Limit Thermostat

The high limit thermostat sends voltage to the oven fan as the oven heats up. If the high limit thermostat is defective, it may keep sending voltage to the oven fan after the oven has cooled down. To determine if the high limit thermostat is at fault, use a multimeter to test the thermostat for continuity. If the high limit thermostat does not have continuity, replace it.
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Less Common

06 - Range/Stove/Oven Thermostat

The thermostat sends voltage to the oven fan as the oven heats up. If the thermostat contacts are stuck closed, the thermostat may continue to send voltage to the oven fan after the oven has cooled down. To determine if the thermostat is at fault, use a multimeter to test the thermostat for continuity. If the thermostat shows continuity at any temperature, this indicates that the thermostat is defective. If the thermostat is defective, replace it.
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Less Common

Frequently Asked Questions

Why does my oven fan keep running after I turn the oven off?
How do I test the thermostat when my oven fan won't turn off?
Could a control board cause my oven fan not to turn off?
How do I find the correct thermostat or control board for my range oven?
Is it safe to use an oven when the cooling fan won't turn off?

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