I have a VP2 with daytime FARS that had stopped after about 14 months. Took it apart checked connections, and swirled the fan blades (really technical) so there was no obvious problem. Decided would need to order new fan. So put it back together and the fan decided to work again.
So as it seems they don't last that long, will go ahead and be proactive and order a fan.
Was wondering if there are better fans out there that would replace the Davis fan?