Google Nest Thermostat Silver (3rd gen)

Reddit r/Nest (u/beachbabe237): Nest display blinks red on base and will not stay on after hours. MicroUSB briefly boots then shows empty battery and shuts down. Sibling Nest works on same upstairs base, isolating fault to the head unit after a power outage. Commenters advise Nest replacement for dead battery.

Reddit r/Nest (u/dbasinge): Nest Learning Thermostat after two years went offline with black screen; appears to stop charging though briefly recovers when disconnected and reattached to base. Another owner had same stop-charging at 1 year and got Nest replacement; Wi-Fi failures on sibling unit also noted.

Reddit r/Nest: Nest Learning Thermostat 3rd Gen worked a couple years then kept disconnecting and finally finds no networks (W5). Initial Google chat said OOW nothing to do; other owners report senior agents replacing display heads even OOW for this known Wi-Fi failure.

Reddit r/Nest: Nest thermostat stopped recognizing Wi-Fi. Support admitted common malfunction but refused replacement because device was 13 days out of warranty. Commenters discuss W5 Wi-Fi chip failures and sometimes getting goodwill replacements.

Coolblue review by Ton Snoei (11 July 2018). After 3 months the thermostat no longer saw Wi-Fi and the wireless Heat Link also stopped working. Reviewer said 2 of 6 Nest thermostats he had bought eventually failed; Coolblue exchanged it quickly.