GE Range Error Code F350: Upper Cooling Fan Circuit... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) monitors the upper cooling fan circuit. The F350 error indicates that the MCU has detected an issue with the fan's operation, such as a stalled fan, open circuit, or short circuit. The MCU provides a specific voltage to the fan motor and monitors the current draw. An out-of-range current indicates a problem. The fan is typically 120V AC.

Symptoms:

The oven displays an F350 error code. The upper cooling fan may not be running or runs intermittently. The oven may overheat during use.

Possible Causes:

Blocked upper cooling fan
Faulty upper cooling fan motor
Wiring harness issue between the MCU and the upper cooling fan
Defective MCU (Main Control Unit)
Overheated oven cavity triggering thermal overload.

Solution:

1

Disconnect power to the range at the breaker panel.
2

Locate the upper cooling fan, usually at the top rear of the range, behind an access panel. Remove the access panel using a 1/4-inch nut driver.
3

Inspect the fan for any visible obstructions (lint, debris). Remove any obstructions.
4

Using a multimeter, check the fan motor windings for continuity. A reading of infinity (open circuit) indicates a faulty motor.
5

Check the wiring harness and connectors between the MCU and the fan motor for damage or loose connections. Repair or replace as needed.
6

If the wiring and fan motor check out okay, the MCU may be faulty. Replacement of the MCU may be necessary. Refer to the service manual for proper MCU replacement procedures.
7

Reconnect power to the range and test the fan operation. If the F350 error returns, further diagnosis is required.

Safety Warning:

Always disconnect power to the range at the breaker panel before attempting any repairs. Use proper Lock-Out/Tag-Out (LOTO) procedures. High voltage is present inside the appliance; exercise caution.

Prevention:

Regularly clean the area around the range to prevent dust and debris from accumulating. Schedule yearly appliance maintenance and cleaning.

Expert Tip:

Some GE ranges have a service mode. Consult the service manual for your specific model to access the service mode and run diagnostic tests on the cooling fan circuit.

Frequently Asked Questions

•Where exactly is the upper cooling fan located on my GE range?

The upper cooling fan is typically located at the top rear of the range, behind a metal access panel. You'll likely need a 1/4-inch nut driver to remove the screws securing the panel.

•What voltage should I expect to see at the cooling fan connector when the oven is operating?

You should expect to see approximately 120V AC at the cooling fan connector when the oven is heating and the fan is supposed to be running. Use caution when measuring live voltage.

•If the fan motor has continuity, what else could cause the F350 error?

If the fan motor has continuity, the F350 error could be caused by a blockage preventing the fan from spinning, a wiring harness issue (check for broken or shorted wires), or a faulty MCU (Main Control Unit). It is recommended to test the voltage at the fan and ensure it is reaching 120V AC.

GE Range Error Code F350: Upper Cooling Fan Circuit Blockage Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where exactly is the upper cooling fan located on my GE range?

•What voltage should I expect to see at the cooling fan connector when the oven is operating?

•If the fan motor has continuity, what else could cause the F350 error?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: