Microwave displays PF or flashes the clock after a power interruption; may beep once.

Safety note: This is usually informational, not a fault.

• Check power source: Ensure the microwave is firmly plugged into a properly grounded outlet. Avoid using extension cords.
• Reset clock: Follow the user manual to set the time. The PF code should clear once the clock is set.
• Monitor for recurrence: If PF appears frequently, have an electrician check the outlet and circuit for loose connections or voltage drops.