Your Oven’s Cooling Fan Stays On

Is the fan on your oven continuing to operate after you've finished cooking your food? If it fails to stop after a certain amount of time, this is not normal. Here we explain to you in detail the various things that might be causing this.

THE POTENTIAL CAUSES FOR THIS FAULT:

WARNING
Before you do anything to your appliance, make sure you disconnect it from the power supply.
There is a risk of electric shock.
Wear suitable protective gloves if you need to dismantle anything.
There is a risk of getting cut or injured.

The temperature sensor is faulty

The temperature sensor is faulty The temperature sensor lets the power module know whether your oven has reached the required temperature or not. If it's faulty, it may incorrectly signal that the oven is still too hot. This will cause the fan to continue operating even if your oven is cold. Check the condition of the sensor using a multimeter in ohmmeter mode. Place the meter's two probes on the sensor's terminals (ensure you first disconnect its connectors before carrying out this procedure). It should have open continuity, i.e. the multimeter should display an ohm value (the exact figure will vary from brand to brand – check with our technical service or contact the manufacturer's after-sales service). If the temperature sensor does not have continuity, you will need to replace it.

The control thermostat is faulty

The control thermostat is faulty Some ovens are fitted with adjustable thermostats that regulate the temperature and start the fan operating via an additional electrical contact if the oven gets too hot. If your oven is equipped with one of these adjustable thermostats, you can check to see if it's working or not. It will be located behind the temperature control dial. Turn off the electricity to the oven and unplug the wires from the thermostat. Then turn the oven back on. If the fan stops operating, it will definitely be the thermostat you need to replace.

Purchase a thermostat for your Oven

The cooling fan thermostat is broken

The cooling fan thermostat is broken The cooling fan thermostat causes the fan to start operating if the oven needs to be cooled. These thermostats can sometimes stay on after the oven has cooled down. If this is the case with yours, it will need to be replaced. The cooling fan thermostat will normally be located at the top of the oven, underneath the top panel. It will have two wires connected to it, one of which will be linked directly to the fan motor.

Purchase a thermostat for your Oven

The 500 degree thermostat is defective

The 500 degree thermostat is defective Some older ovens are fitted with 500 degree thermostats. This regulates the temperature during pyrolysis (self-cleaning) and controls the operation of the cooling system. If it's defective, the cooling fan will continue operating constantly. If your oven happens to be fitted with one of these thermostats, it will actually be difficult to check and test. Before proceeding, you'll first need to get hold of the wiring diagram for the appliance.

The oven selector dial is faulty

The oven selector dial is faulty Some ovens have an oven selector commutator that controls the power to the heating elements and the cooling system. With use, the electrical contacts on these can sometimes become damaged and get stuck in the engaged position. If this is happening in your case, the fan on your oven will be prevented from stopping. You can check the commutator by opening up the oven's top panel and looking at the back part of the oven selector dial. If one of the contacts is stuck and causing the oven fan to operate constantly, this will often be visible to the naked eye.

Purchase a selector dial for your Oven

The main circuit board has failed

The main circuit board has failed The main circuit board (PCB) manages all your oven's functions (convection fan motor, cooling fan, heating elements, etc.). If everything else above has been checked and the fan is still operating constantly, the board itself may need replacing. You can either do this yourself or call on the services of a manufacturer-approved engineer.

Purchase a main circuit board (PCB) for your Oven

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