What does the flashing E 3 mean on my Beauty Rest electric blanket?

The flashing E3 on your Beauty Rest electric blanket typically indicates a malfunction or error in the blanket's heating system. This could be due to a problem with the power supply, a short circuit, or an issue with the blanket's internal wiring. To resolve the issue, unplug the blanket, wait for a few minutes, and then plug it back in. If the error persists, consult the user manual or contact customer support for further assistance.