Bush oven displays E09 and some or all functions are disabled; may follow a power surge or tripped breaker.

Safety first: Disconnect the oven from mains before accessing the control board.

• Power reset: Turn off the oven at the breaker for at least 10 minutes, then restore power. Sometimes E09 can clear if it was triggered by a transient fault.
• Inspect wiring and terminal block: Check the main terminal block at the rear for burnt connections or loose screws. Tighten and replace damaged parts as needed.
• Access the control PCB: Remove the control panel and carefully inspect the board. Look for burnt tracks, bulging capacitors, or scorch marks.
• Check for moisture ingress: Signs of steam or water damage around the PCB can cause E09. Identify and correct any seal or trim issues that allow steam into the control area.
• Replace the PCB: If visible damage is present or E09 will not clear, order the correct Bush main control board by model number. Transfer any wiring one connector at a time to avoid mistakes. After replacement, test all functions.