Staff Answer
Sep 25, 2026 - 12:59 PM
Norcold boards usually use standard automotive blade fuses, and the rating is printed on the board next to the fuse holder. Match it exactly. Never use a larger fuse. A fuse that keeps blowing means there's a short to track down. I can't confirm your board from the serial number alone, so send us the model number. The Board Kit 637779 has been discontinued by Norcold. If your fridge is an N621/N821, Norcold's replacement is the N7X or N8X. 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.
