Microwave trips the household circuit breaker or blows a fuse when starting a cook cycle.

Safety: Repeatedly resetting a tripping breaker can be dangerous. Unplug the microwave and do not continue to use it until the fault is identified.

Steps:

• 1. Confirm dedicated circuit: Ensure the microwave is on a properly rated circuit and not sharing with high-load appliances.
• 2. Try another outlet: If possible, test on a different properly grounded outlet to rule out wiring issues.
• 3. Internal diagnosis (technician recommended): A breaker trip at the moment of starting usually indicates a shorted HV component or line filter. These parts are inside the high-voltage section and should be tested and replaced only by a qualified technician.