Display shows PF (power failure) after a power cut; clock is reset and previous program is lost.

User steps:

• Check that household power is stable and that the outlet is functioning.
• Firmly insert the microwave plug into the socket.
• Reset the clock and reprogram the desired cooking settings.
• If PF appears frequently, have an electrician check the circuit for loose connections or low voltage.

Note: PF itself is not a hardware fault but may indicate unstable supply if recurring.