Staff Answer
Sep 27, 2026 - 06:21 PM
The 628661 is the rear power board. The door-mounted control board on the N811LT is the optical board, and the N811's optical board kit (637775) is discontinued. If that front board has failed, the fridge would need to be replaced, and the Norcold N8X is the current replacement. Email us your serial number at info@rvfridgeguys.com if you'd like us to double-check.
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.
