Staff Answer
Sep 24, 2026 - 06:59 PM
That's a frustrating one. If the thermistor code keeps coming back after replacing the thermistor twice, look at the connection instead of the part. Check the thermistor plug where it connects to the board for corrosion or a loose fit, and check the ribbon cable between the optical board and the power board. Also, the N611V uses its own optical board (636388 or 636105/ 637776), so make sure the board you installed is the correct one for a V model. If the heater is getting power and the fridge still won't cool, the cooling unit may be failing. Here's our guide on RV refrigerator not cooling, and our tech support service can walk through it with you. If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
