Staff Answer
Sep 25, 2026 - 12:34 AM
I can't confirm that a 638190 replaces your 638189. The current main power board for the Polar N7/ N8/ N10 is the 639593/ 50861, which replaces the 638189. Your NA8LX.3 is a 3-way model, which also uses a separate DC board, so send us your serial number and we'll confirm the right combination. 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.
