Hoover oven shows E15 and the display may flicker or reset when heating starts.

Safety first: Turn off the oven at the mains before inspecting electrical connections.

• Check household supply:
  • Verify that the circuit breaker is correctly rated and not overloaded by other appliances.
  • If lights dim or other devices reset when the oven heats, consult an electrician.
• Inspect mains terminal block:
  • Remove the rear cover to access the mains terminal block.
  • Check that all screws are tight and there are no signs of overheating or melting.
  • Tighten loose terminals and replace any burnt components.
• Check mains filter and wiring:
  • Inspect the mains interference filter for bulging or burning.
  • Replace if damaged.
  • Ensure all earth and neutral connections are secure.
• If connections are sound: The low-voltage power supply on the main PCB may be failing under load. Replacement of the main control board is recommended and should be done by a professional.