https://www.googlenestcommunity.com/t5/Nest-Thermostats/Heating-outside-of-programmed-timings/m-p/50662#M11155 <P>Do you have true radiant turned on?</P><P>I think by default it is set at 5 hr pre heat , so may be kicking in earlier than your schedule?</P><P>New to this myself but realised I had it on when my heating was coming on at 4am rather than 5.30am.</P><P>That said I'm now switching to opentherm connection so will be turning TR back on.</P><P><span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span><span class="lia-unicode-emoji" title=":thumbs_up:">👍</span></P> Thu, 25 Nov 2021 14:41:54 GMT Wrongtrousers 2021-11-25T14:41:54Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Heating-outside-of-programmed-timings/m-p/50604#M11140 <P>So I keep coming home and finding the heating on despite having pre programmed timings! I have everything switched off on the nest so it should function only as a traditional programmed thermostat, why?</P> Thu, 25 Nov 2021 09:30:38 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Heating-outside-of-programmed-timings/m-p/50604#M11140 Mick66 2021-11-25T09:30:38Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Heating-outside-of-programmed-timings/m-p/50662#M11155 <P>Do you have true radiant turned on?</P><P>I think by default it is set at 5 hr pre heat , so may be kicking in earlier than your schedule?</P><P>New to this myself but realised I had it on when my heating was coming on at 4am rather than 5.30am.</P><P>That said I'm now switching to opentherm connection so will be turning TR back on.</P><P><span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span><span class="lia-unicode-emoji" title=":thumbs_up:">👍</span></P> Thu, 25 Nov 2021 14:41:54 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Heating-outside-of-programmed-timings/m-p/50662#M11155 Wrongtrousers 2021-11-25T14:41:54Z