Good morning I have just recently moved into a house with a nest thermostat. Water is scheduled and fine. Heating we put on until the desired temperature was reached but the boiler will not switch off so heating continues to run . I turned the boiler off over night and tried it this morning snd the heating automatically comes on even though the heat is off on nest.
Software is 5.9.4-5
People keep blaming the thermostat, have you checked the installation?
You have to remember, and I am not saying this is the problem with yours, but if the install is poor, then the system will never work correctly. First question, was the thermostat installed by a Nest Pro, or a DIY job?