Hi Mandrews, my thermostat had the same faults. I contacted Google Nest
Support via their chat room eventually managed to receive a free
replacement Heat Link which I have fitted and all is working correctly.
My thermostat is a 3rd generation and I lost the 12v power supply as
well as any connection to the Heat Link. I contacted Google Nest via
their chat room and after a frustrating 2 days waiting for return calls
(that never happened) I eventually was s...
Hi my Google Nest Learning thermostat 3rd generation stopped working
after 2 years with no issues. Checked Heat Link 240volts to unit but no
lights shown. Turn main switch off then on still no lights. Tried
pressing reset no response. Also noted no p...