Microwave trips the household circuit breaker or RCD/GFCI when starting or during operation.

Safety first: If the breaker trips immediately when starting the microwave, do not repeatedly reset it. There may be a serious electrical fault.

• Check outlet and circuit: Verify that the microwave is on a properly rated circuit and not sharing with other high-load appliances.
• Inspect power cord: Unplug the unit and examine the cord for cuts, burns, or crushed sections. Replace the cord if damaged.
• Dry out moisture: If the microwave was exposed to heavy steam or a spill, unplug it and allow it to dry for 24 hours before retrying.
• Professional diagnosis: Internal shorts in the high-voltage circuit or magnetron require specialized testing and replacement by a qualified technician.