https://www.googlenestcommunity.com/t5/Nest-Thermostats/Central-heating/m-p/796051#M143924 <P><a href="https://www.googlenestcommunity.com/t5/user/viewprofilepage/user-id/866871">@Crx1966</a>,</P> <P>This sounds like you are in Europe with a HeatLink system. If no CH light then if the thermostat is not calling for Heat (CH) or the call for heat is not reaching the Heat Link.&nbsp;<BR />The CH only activates or illuminates when the Nest Thermostat is calling for heat. Verify the Nest is paired with the heat link</P> <P>The Cooling Wizard</P> Tue, 10 Mar 2026 19:54:14 GMT CoolingWizard 2026-03-10T19:54:14Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Central-heating/m-p/795961#M143916 <P>My nest is not turning CH on&nbsp;</P><P>got hot water</P><P>reset and gone through all scenarios with receiver</P><P>all 3 lights green</P><P>still not CH but hot water</P><P>help</P> Mon, 09 Mar 2026 21:50:50 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Central-heating/m-p/795961#M143916 Crx1966 2026-03-09T21:50:50Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Central-heating/m-p/796051#M143924 <P><a href="https://www.googlenestcommunity.com/t5/user/viewprofilepage/user-id/866871">@Crx1966</a>,</P> <P>This sounds like you are in Europe with a HeatLink system. If no CH light then if the thermostat is not calling for Heat (CH) or the call for heat is not reaching the Heat Link.&nbsp;<BR />The CH only activates or illuminates when the Nest Thermostat is calling for heat. Verify the Nest is paired with the heat link</P> <P>The Cooling Wizard</P> Tue, 10 Mar 2026 19:54:14 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Central-heating/m-p/796051#M143924 CoolingWizard 2026-03-10T19:54:14Z