Falcon range shows F3 and disables the oven; often appears shortly after starting a bake cycle.

Safety first: Isolate the appliance from the mains before removing any panels.

• Access the sensor: Locate the oven temperature sensor inside the cavity (rear wall or upper rear corner). Remove the mounting screws and gently pull the sensor forward to access the connector.
• Check continuity: Disconnect the sensor and measure resistance across its terminals. An open circuit (OL) indicates a failed sensor that must be replaced.
• Inspect harness: If the sensor tests good, follow the harness through the rear of the oven to the control board. Look for breaks, heat damage, or loose plugs. Repair or replace damaged wiring.
• Control board diagnosis: If both sensor and wiring are intact and F3 persists, the EOC sensor input may be defective. Replace the EOC following Falcon’s service instructions.

Always use a genuine or compatible Falcon oven sensor with the correct resistance curve; incorrect sensors can cause further errors.