Beko oven shows E15 and trips the household circuit breaker when a heating function is selected.

Safety first: Do not repeatedly reset a tripping breaker. Isolate the oven and keep it off until the fault is found. Risk of electric shock and fire.

Isolation testing (technician level):

• With power disconnected, visually inspect all heating elements (grill, fan, bottom) for cracks or burn-through.
• Check wiring looms for melted insulation or points where they may rub against sharp metal edges.
• Use a megohmmeter (insulation tester) between each element terminal and chassis earth. Low resistance (below manufacturer spec) indicates leakage and the element should be replaced.
• Dry out the oven thoroughly if moisture ingress is suspected (e.g., after steam cleaning) before retesting.
• If all elements and wiring test good, the main PCB may be faulty and require replacement.

Warning: Insulation testing should be performed only by qualified personnel with appropriate equipment.