What about flashing F on the sunbeam electric blanket control?

The "F" on the Sunbeam electric blanket control typically indicates a fault or error with the blanket's heating system. This could be due to a variety of issues, such as a malfunctioning heating element or a problem with the control unit. It's advisable to unplug the blanket, check for any visible damage, and consult the user manual for troubleshooting steps. If the problem persists, contacting customer support or seeking a replacement may be necessary.