I will assume Newmar has used the 3 wall temp probes. Usually the Wall tstat on your model is the Zone 1 temp sensor, but I believe Newmar started to use a separate temp probe like the Zone 2/3 for Zone 1. If so, find that sensor and remove the plastic cover and let the Thermister bulb end hang loose out of the wall hole. IF there is a wire loom clamp over that Thermister bulb, remove it and discard. Then retest your system and let us know if this has eliminated the problem. It will not hurt the fan by this cycling but it is annoying. IF the problem goes away, reinstall the Thermister bulb behind the cover and do NOT use any type clamp over the thermistor bulb end. Doug
PS, IF they are Penguin units, then the main control board was also new each time they replaced the Roof top units as Penguins come with a new control board already installed.