GE Café Range F350 Error: Clearing History in SmartHQ... | appliancefaults.com

Technical Background:

The F350 error code indicates a problem with the oven temperature sensor circuit. The MCU (Main Control Unit) monitors the resistance of the RTD (Resistance Temperature Detector) to determine the oven temperature. The MCU sends a small voltage through the RTD circuit and interprets the return voltage based on the RTD's resistance. An open or short circuit in this path triggers the F350 error.

Symptoms:

The GE Café range displays an F350 error code. The oven may not heat properly, or the temperature readings may be inaccurate. The error persists even after power cycling the unit, and you are trying to clear the error through the SmartHQ app because it seems like the error is lingering there despite the fault being addressed.

Possible Causes:

Open RTD or shorted RTD circuit.
Faulty oven temperature sensor (RTD).
Wiring harness issue between RTD and MCU.
Loose connection at the RTD or MCU.
Defective MCU (Main Control Unit).

Solution:

1

Disconnect power to the range at the breaker panel.
2

Locate the RTD (Resistance Temperature Detector) sensor in the oven cavity, typically at the rear.
3

Using a 1/4-inch nut driver, remove the screws securing the RTD sensor.
4

Disconnect the wiring harness from the RTD sensor. Inspect the connector and wiring for damage or corrosion.
5

Using a digital multimeter set to ohms, measure the resistance of the RTD sensor. At room temperature (70-75°F), it should read approximately 1080-1090 ohms. If the reading is significantly different (open or near zero), replace the RTD sensor.
6

If the RTD sensor tests good, check the wiring harness continuity between the RTD connector and the MCU connector using your multimeter. Look for opens or shorts to ground.
7

If the wiring is good, suspect a faulty MCU. Replace the MCU. Reconnect all components and restore power to the range.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lock out/tag out (LOTO) the breaker to prevent accidental re-energizing of the circuit. The range operates on 240V AC; exercise extreme caution to avoid electrical shock.

Prevention:

Periodically inspect the oven temperature sensor and wiring for signs of damage or corrosion. Avoid using harsh cleaning chemicals inside the oven, as they can damage the sensor. Ensure proper ventilation around the range to prevent overheating.

Expert Tip:

To clear the error code after repair, you may need to enter the service mode. This is often done by pressing a specific sequence of buttons on the control panel (often involving the Bake and Broil buttons simultaneously for a few seconds). Check the service manual or online resources for the exact sequence for your specific model. Even after repairs the SmartHQ app sometimes needs to be disconnected and reconnected to reflect the repairs.

Frequently Asked Questions

•What is the RTD sensor voltage when the oven is at 350°F?

The voltage across the RTD sensor is a function of its resistance, which changes with temperature. At 350°F, the resistance is higher, and depending on the design, the voltage could be in the range of 2-3 volts DC, but this needs to be measured in circuit.

•How do I test the MCU voltage output to the RTD sensor?

Disconnect the RTD sensor. Set your multimeter to DC volts. With the range powered on (and set to bake or broil), carefully measure the voltage at the RTD connector on the wire harness coming from the MCU. It should be a low DC voltage, typically around 5V DC. No voltage indicates a potential MCU issue.

•Where can I find a replacement RTD sensor for my GE Café range?

You can find replacement RTD sensors at most appliance parts retailers, both online and in brick-and-mortar stores. Be sure to have your range's model number handy to ensure you get the correct part. GE also sells replacement parts directly through their website.

GE Café Range F350 Error: Clearing History in SmartHQ App

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the RTD sensor voltage when the oven is at 350°F?

•How do I test the MCU voltage output to the RTD sensor?

•Where can I find a replacement RTD sensor for my GE Café range?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: