Oven trips household circuit breaker or RCD when heating starts; error may be logged

Safety first: Do not repeatedly reset a tripping breaker. Disconnect the oven and investigate before further use.

• Visual inspection: Remove rear and top covers. Look for burnt wiring, melted insulation, or signs of arcing around elements and terminal block.
• Insulation test (if equipment available): Use a megohmmeter to test insulation resistance between each heating element terminal and earth. Low resistance indicates leakage; replace the affected element.
• Check cable routing: Ensure no wires are trapped between panels or rubbing on sharp edges. Repair or replace damaged cables and secure with clips.
• Moisture check: If the oven has been recently cleaned with excessive water or steam, allow it to dry thoroughly for 24–48 hours before retesting.
• Filter/PCB inspection: Inspect the mains interference filter and PCB for cracked capacitors or burn marks. Replace the filter or board if damaged.

Warning: Earth leakage testing should be performed by a qualified technician with appropriate test equipment.