Error code 2800 on a Generac generator signifies an issue with the generator's transfer switch. This error may arise due to a malfunctioning switch, a communication error between the switch and the generator, or an incorrect installation. To resolve the issue, refer to the generator's user manual for troubleshooting steps or consult a qualified technician. The Electricians Service Team is ready to help with any generator-related problems, including transfer switch diagnostics and repairs.