Staff Answer
Sep 25, 2026 - 01:17 PM
Not all N3150s have a cooling fan. If yours does, it only runs when the back of the fridge gets hot, controlled by a fan thermostat, so it's normal not to hear it in mild weather. If it should be running and isn't, check the 12V to the fan and the fan thermostat 640235. The Valterra A10-2618VP fan is in stock. The N3150 is discontinued, and Norcold's replacement is the Norcold N4150. 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.
