Staff Answer
Sep 25, 2026 - 01:15 PM
To tell whether it's the power board or the front display board on a Polar N7/N8/N10, look for a fault code. Also check whether the display lights up at all. If the display is dark with 12V at the power board, the power board is more likely. If the display works but the fridge won't heat on AC or LP, it's also usually the power board. The Power Board 639593 is in stock, and so are the front boards (639550 and 639551). See our N7/N8/N10 fault codes article.
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.
