GE Café Range Error Code F350: Cooling Fan or Sensor... | appliancefaults.com

Technical Background:

The F350 error on a GE Café range typically indicates a problem with the oven cooling system or the oven temperature sensor. The main control board (MCU) monitors the temperature of the oven using the resistance temperature detector (RTD) sensor. It also controls the cooling fan to prevent overheating of the electronic components. The MCU compares the actual temperature to the setpoint and adjusts the heating elements accordingly. It also monitors the cooling fan status. Any deviation from the expected values triggers the F350 error.

Symptoms:

The GE Café range displays an F350 error code, and the oven may not heat properly or may overheat. The cooling fan may not be running, or it might be running intermittently. The error can occur during preheating or during normal baking operations.

Possible Causes:

Blocked cooling fan
Faulty cooling fan motor
Defective oven temperature sensor (RTD)
Wiring harness issue between the sensor and control board
Malfunctioning main control board (MCU)

Solution:

1

Disconnect power to the range at the breaker panel (LOTO).
2

Locate the oven cooling fan, usually at the rear of the unit. Inspect for obstructions, such as debris or accumulated dust.
3

Using a multimeter, check the cooling fan motor windings for continuity. A reading of infinite resistance indicates an open motor.
4

Access the oven temperature sensor (RTD), typically located inside the oven cavity. Disconnect the sensor wires from the control board.
5

With the multimeter set to ohms, measure the resistance of the RTD at room temperature (approx. 75°F). It should read approximately 1080 ohms. Refer to the service manual for the exact value.
6

Check the wiring harness between the RTD and the control board for any breaks or shorts. Use the multimeter to test for continuity.
7

If all other components check out, the main control board (MCU) may be faulty and require replacement or licensed technician repair.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. High voltage is present inside the appliance, which can cause serious injury or death. Employ Lock-Out/Tag-Out (LOTO) procedures.

Prevention:

Regularly clean the cooling fan area with a vacuum cleaner to remove dust and debris. Periodically inspect the oven temperature sensor for any signs of damage.

Expert Tip:

Many GE ranges have a service mode that allows you to run diagnostic tests and monitor sensor readings in real time. To access the service mode, consult the service manual for the specific model. This will quickly confirm the cooling fan and sensor are reading as expected.

Frequently Asked Questions

•What is the expected voltage reading at the cooling fan motor when the oven is in operation?

The cooling fan motor typically operates on 120V AC. Use a multimeter to check the voltage at the motor terminals when the oven is running. If there is no voltage present, the problem may be with the control board or the wiring harness.

•How do I properly test the RTD sensor if I don't know the exact room temperature?

Use a meat thermometer to determine the room temperature and use an ohmmeter to test the RTD. Compare this value against the RTD resistance chart. An RTD resistance chart is available in the service manual or from a component supplier online.

•If the cooling fan seems to be running, but the F350 error persists, what else could be the issue?

Even if the cooling fan is running, it may not be running at the correct speed. The MCU might be seeing an abnormal RPM from the fan motor (if it is a variable speed fan). Also, a faulty temperature sensor could still be the culprit, as it might be providing inaccurate temperature readings to the control board.

GE Café Range Error Code F350: Cooling Fan or Sensor Issue Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the expected voltage reading at the cooling fan motor when the oven is in operation?

•How do I properly test the RTD sensor if I don't know the exact room temperature?

•If the cooling fan seems to be running, but the F350 error persists, what else could be the issue?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: