Staff Answer
Sep 25, 2026 - 01:54 PM
An "n" (or "no CO") code on the newer N6/N8 boards means the board didn't see the cooling it expected, so it shut down as a safety measure. When it comes back after a reset, that usually points to a cooling unit problem, not the board. Check for yellow residue or an ammonia smell at the back. See our "no CO" / n code article and Norcold error codes page. Our Tech Support service can help you confirm it. If your fridge is discontinued, our Norcold replacement guide shows the current replacement.
Since I can't confirm this 100% from here, please email us at info@rvfridgeguys.com or call 800-712-8822 with your model and serial number and we'll double-check it for you. You can also browse www.rvfridgeguys.com.
