Staff Answer
Sep 27, 2026 - 10:34 AM
I don't recognize 663294A. For the N611 optical board, the 637775 kit was the replacement, but it's been discontinued and isn't available anymore. If the optical board is bad, the Norcold N7X is the replacement fridge, with the same cutout.
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.
