Staff Answer
Sep 25, 2026 - 01:02 PM
The Board Kit 633273 is listed for the N410/N412/N510/N512, so it's made for the N510UR. It has been discontinued by Norcold, so it's only available while our remaining stock lasts. If you only need the optical board, the Optical Display Board 628663 is listed for these models (about a 2-3 week lead time). I can't confirm it's a direct swap for your 622257 without adapters. The N510 is discontinued, and the closest current Norcold propane model is the Norcold N4150. See our Norcold replacement guide.
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.
