Washer-dryer occasionally trips the household circuit breaker or RCD during operation.

Safety first: Do not repeatedly reset a tripping breaker without finding the cause. Unplug the appliance and keep it disconnected until inspected.

• Check for leaks: Inspect around the heater, pump, and hoses for water leaks that could reach electrical parts.
• Test heater to earth: With a multimeter and appliance unplugged, test resistance between heater terminals and earth. A low reading indicates a leak to earth; replace the heater.
• Inspect cable: Check the mains cable for cuts or crushed sections. Replace if damaged.
• Professional testing: If the cause is not obvious, have an electrician or appliance technician perform insulation resistance tests on the motor and wiring.