Staff Answer
Sep 26, 2026 - 09:28 AM
I can't confirm the 621990 optical board works with the 628661 power board from here. The optical and power boards have to be a matched pair to communicate.
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.
