Staff Answer
Sep 24, 2026 - 06:40 PM
There isn't a reset button on the 628663 optical board, but you can reset the system by cutting power. Turn the fridge off, then disconnect the 12V DC supply to the fridge (pull the fuse at the RV panel or on the power board) for a minute or two, then restore power and turn it back on. That clears most fault lockouts. If it goes right back into a fault, the code is telling you something, so check our Norcold error codes page and this post on Norcold lockout mode. 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.
