Oven trips the circuit breaker or RCD when turned on or when a specific function is selected.

Safety first: Do not repeatedly reset a tripping breaker. Disconnect the oven and only proceed if you are competent with electrical testing.

Step-by-step checks:

• 1. Identify when it trips: Note whether it trips immediately when powered, or only when selecting grill, fan, etc. This helps locate the faulty circuit.
• 2. Insulation test elements: With all wires disconnected from elements, use a megohmmeter (insulation tester) between each element terminal and earth. Low resistance indicates leakage; replace the affected Hotpoint-Ariston element.
• 3. Inspect wiring: Look for crushed or melted wires, especially where they pass through metal panels. Repair with high-temperature cable and proper terminals.
• 4. Check mains filter: Inspect the EMI filter near the mains entry for burning or cracking. Replace the mains interference filter if suspect.