Staff Answer
Sep 28, 2026 - 06:15 AM
That drop from 13V to 6V under load means there's a bad connection or undersized wiring between the battery and the fridge. The board isn't the cause, so fix the wiring before replacing parts. Check every fuse holder, connection and ground on that 12V circuit for corrosion or looseness, and make sure the wire gauge is heavy enough. Once the fridge sees a solid 12V under load, "lo dc" should go away.
If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
