GE Profile Oven Error Code F350: Cooling Fan Blockage... | appliancefaults.com

Technical Background:

The MCU monitors oven temperature and activates the cooling fan to prevent overheating of electronic components. Error F350 indicates the MCU detects a problem with the cooling fan circuit, either no fan running after reaching a threshold temperature, or no confirmation signal from the fan after activation. The MCU uses a relay to send 120V AC to the fan motor.

Symptoms:

The oven displays error code F350. You might hear clicking sounds, but the cooling fan doesn't operate. The oven may shut down prematurely during use.

Possible Causes:

Blocked cooling fan blades
Cooling fan motor failure
Faulty wiring harness to cooling fan
Overheated oven cavity
Defective main control board (MCU)

Solution:

1

Disconnect power to the oven at the breaker panel.
2

Locate the cooling fan, typically at the rear of the oven. Access may require removing rear panels with a 1/4-inch nut driver.
3

Inspect the fan blades for any obstructions. Remove debris carefully.
4

Using a multimeter, check the voltage at the cooling fan motor connector while the oven is attempting to cool (after a bake cycle, reconnect power temporarily for testing). Expect 120V AC. Reconnect power *briefly* for this test, observing all safety precautions.
5

If no voltage is present, check the wiring harness from the main control board (MCU) to the cooling fan. Look for damaged or loose connections.
6

If voltage is present but the fan isn't running, the cooling fan motor is likely defective and needs replacement. Replacement usually requires a 5/16-inch socket to remove mounting screws.
7

If the wiring and fan motor check out, the main control board (MCU) may be faulty and require replacement. Verify all other components before replacing the MCU.

Safety Warning:

Disconnect power at the breaker panel before working on the oven. High voltage is present. Lock Out/Tag Out (LOTO) procedures should be followed. Wear appropriate safety glasses and gloves.

Prevention:

Regularly inspect and clean the cooling fan area. Ensure proper ventilation around the oven. Avoid placing objects that could obstruct the fan.

Expert Tip:

Some GE Profile ovens have a service mode. Check the tech sheet behind the lower access panel. Often, you can manually activate the cooling fan through the service menu to test it independently.

Frequently Asked Questions

•How do I access the cooling fan on my GE Profile oven?

Typically, you'll need to unplug the oven and remove the rear access panel(s). Use a 1/4-inch nut driver or screwdriver to remove the screws. Be careful not to damage any wiring during removal.

•What voltage should I expect to see at the cooling fan connector?

You should see approximately 120V AC when the oven is calling for the cooling fan to run. Use a multimeter set to AC voltage to test.

•How can I tell if the main control board (MCU) is faulty?

If you've ruled out a blocked fan, a bad fan motor, and wiring issues, and you are still not getting voltage to the fan, the MCU is the likely culprit. However, replacing the MCU should be the last resort after all other components have been thoroughly tested.

GE Profile Oven Error Code F350: Cooling Fan Blockage Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the cooling fan on my GE Profile oven?

•What voltage should I expect to see at the cooling fan connector?

•How can I tell if the main control board (MCU) is faulty?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: