I have a R510 AP that came with my Lennar home. It was working great and then it was not. The POE port is only working when powered by plugging it into a wall outlet. I am using a Ubiquity POE switch and checked the configuration of the port. It has a green light but when I plug the ethernet cable into the POE there is no power but if I plug the power adapter it goes green. I completed a factory reset and can see the configure.com network but it is asking for a password. The serial number is not working and I have tried all the other passwords that are listed online. I am stuck at this point because I can not complete the set up with the AP from the Unleashed app or on my computer. What is causing the AP to not get power from the POE port? Did the port go bad? Is there a way to reset that port? I am confident that the POE port on the Ubiqutiy switch is working, it is green and I can see that it is connected on the admin dashboard for Ubiquity. I have gotten an IP address when connected to the non-POE port on the AP connected to a port on the POE switch.
I have used a different ethernet cable as well.