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Nest learning thermostat 3rd generation EUROPE

Kimmie2701
Community Member

‎02-23-2025 05:34 AM

Hi i had 2 nest thermostats and heat links installed yesterday. One is freestanding with a power cable and one is wired. The one that's wired is upstairs to control upstairs radiators and hot water tank. We noticed yesterday evening the upstairs radiators and boiler would not turn off even tho we had them off in the nest app and on the thermostats. It eventually went off itself,  had to open windows it was so warm upstairs. This morning. It is coming on itself but only the hot water even tho its off and not scheduled.  The only way it will go off is if i remove the thermostat from its base, that's wired? When i turn heating on it says delayed heating and doesnt come on for 2 mins or so. Does anyone know what could be the problem. I have to head out soon and i dont want to leave the boiler on while were not there. 

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Frustratedddd
Community Member

‎02-24-2025 05:19 AM

Obviously the first port of call is to remove all schedules in heating and water, but you say that's done.

Check to see if the bacteria setting is on, try changing to dissabled. You will find the setting in ....settings - equipment.

 

Who installed the thermostats?

 

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virnab
Community Specialist
Community Specialist

‎02-26-2025 09:24 AM

Hi Kimmie2701,

 

Thanks for reaching out to our community.

I’m sorry to hear that your upstairs radiators and boiler do not turn off even though you have them off in the Nest app and you have to remove the thermostat from its base to turn off your heating. Thank you for letting us know important details about the behavior of your thermostat with the heating system. No worries, help is here.

Before I start further troubleshooting, let me ask you a few questions:

  1. Was the thermostat installed by a Nest Pro or by a regular installer?
  2. Is there any LED on the Heat Link?
  3. What is the display color?
  4. Does the display show a water droplet?
  5. Does the display show the Bacteria Prevention icon?
  6. Is there a wiring report or error message on your thermostat and/or app?
  7. Have you had any recent power cuts in your area? 

Thanks for your kind attention; I will be looking forward to your response.

 

Best regards,

Virna

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