The oven will not heat correctly and displays F3.

Safety first: Disconnect power before servicing.

• Access and test sensor:
  • Remove the oven temperature sensor from inside the cavity.
  • Measure its resistance at room temperature (~1050–1100 Ω).
  • If open or far out of range, replace the oven temperature sensor.
• Check harness:
  • Inspect the wiring from the sensor to the control for breaks or burns.
  • Reseat the connectors at both ends.
  • Repair or replace damaged harness sections.
• Control board:
  • If the sensor and wiring are good but F3 persists, the EOC sensor input may be defective.
  • Replace the electronic oven control (EOC) if necessary.