https://www.googlenestcommunity.com/t5/Nest-Thermostats/H72-error-code-Heat-link-appears-dead/m-p/237743#M47941 <P>Heatlink is connected to same power source to which boiler is connected. boiler works ok. I have followed the wire from the heat sink to the thermostat and all looks ok.</P><P>THis thermostat was installed by a professional. what ekse can i do? it was bough on 15/10/2020</P><P>&nbsp;</P> Mon, 12 Sep 2022 22:19:34 GMT ChandanPrakash 2022-09-12T22:19:34Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/H72-error-code-Heat-link-appears-dead/m-p/237743#M47941 <P>Heatlink is connected to same power source to which boiler is connected. boiler works ok. I have followed the wire from the heat sink to the thermostat and all looks ok.</P><P>THis thermostat was installed by a professional. what ekse can i do? it was bough on 15/10/2020</P><P>&nbsp;</P> Mon, 12 Sep 2022 22:19:34 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/H72-error-code-Heat-link-appears-dead/m-p/237743#M47941 ChandanPrakash 2022-09-12T22:19:34Z