The display shows PF, and the microwave resets its clock after a power interruption.

Safety: Ensure your hands are dry when working with electrical outlets.

Steps:

• Press STOP/CLEAR and then reset the clock according to the user manual.
• Check that the power cord is fully inserted into the wall outlet.
• Inspect the cord for visible damage; do not use the microwave if the cord is frayed or cut.
• Check your home's breaker panel for a tripped breaker and reset it if necessary.

If PF appears frequently without known outages, have an electrician check the outlet and circuit. Persistent PF may also indicate an internal control board issue requiring service.