Microwave displays PF (Power Failure) and may beep; clock may be reset.

Safety first: If there are signs of burning or a tripped breaker, investigate before restoring power.

Reset:

• Press Cancel/Off or similar key to clear PF.
• Reset the clock and test basic functions.

If PF recurs frequently:

• Verify the outlet is secure and not loose.
• Avoid using extension cords; plug directly into a dedicated outlet.
• Have an electrician check for voltage drops or loose connections in the home circuit.

Internal issue:

• If PF appears without any known power issues, the electronic control board may have an intermittent power supply fault and could require replacement.