Hi Mark! Thank you for your reply. Before I answer your questions, I should mention that this is a used thermostat that is "supposed" to be working. I was unable to get through the installation process so I cannot tell if it is dead or not. We will call this Nest-1.
Yesterday, I was able to locate and buy a brand new, sealed in the box, Nest E which we will call Nest-2. It installed perfectly!! Now, answers follow to your questions re Nest-1:
1. it's a 2-wire system. White is attached to W and black is attached to R.
2. when charging, there are no messages. The display shows the house icon only.
3. breakers and power are on.
4 display is seated properly.
5. wires are firmly seated.
6. when connected to my computer, I get the Microsoft "ding-ding" sound...same as when a USB drive is inserted. But, I cannot see the drive in Windows Explorer. 30 seconds later, I get the "ding-ding" sound again and it just keeps repeating in a loop. When connected to the pc, it shows up in "Bluetooth and other devices" as a Learning Thermostat, but I cannot access the device.
7. I do not have a C wire. I chose the Nest E as I understood that there would be a good chance that it would work without a C wire.
8. I reattached the display but all I get is the house icon. When I charged Nest-2 via usb, it told me to attach the display to the unit, but Nest-1 never gives any directions. I've tried restating and resetting Nest-1 with no luck in getting it to work. Nest-1 just seems to be stuck. If it was a regular USB thumb drive, I'd say it needs to be formatted and have a new OS applied but that doesn't seem to be an option.
Thanks again!
Regards,
Mike
