Oven trips the household circuit breaker or RCD when heating is started.

Danger: This involves live mains and potential earth faults. If you are not experienced, contact a qualified electrician or technician.

• 1. Identify when it trips: Note whether the breaker trips immediately when the oven is turned on, or only when a specific mode (e.g., grill) is selected.
• 2. Isolate elements: With power off, disconnect one element at a time and test the oven. If the breaker no longer trips when a particular element is disconnected, that element is likely shorted.
• 3. Insulation test (advanced): Use a megohmmeter to test insulation resistance between each element terminal and chassis. Low resistance indicates leakage.
• 4. Inspect wiring: Check for melted or pinched wires where they pass through metal panels or near hot areas.
• 5. Dry out moisture: If the oven was recently steam-cleaned or exposed to moisture, allow it to dry thoroughly (door open, power off) for 24 hours and retest.