My nest thermostat keeps calling for heat even when thermostat is off.

[Lizardo1]

Thermostat calls for heat even when off or past heat setting. I’ve reset and restarted setti but fault still occurs. It’s been fine for three years.

[Cb69]

I just installed the nest and I’m having the same issue 

[Lizardo1]

See my solution further down

[akorl]

My 3gen learning had the same issue start last night. House was getting warm so I switched to cool mode and even though the display was blue and shown to be in cooling the thermostat was not sending the correct signal to the heat pump for it to switch. Call an AC repair person and he verified thermostat doing something crazy so I went out to get the new cheap non gen 3 which fixed the issue but is this something related to gen 3 learning thermostats. Really would like to go back to my gen 3

[Lizardo1]

Thanks for your reply. I’m waiting for an engineer. Seems your right about 3rd gen but Google/nest haven’t acknowledged any fault or even referred to the problem. 
such a frustrating and irritating problem. I’ll update if and when I get an answer.

[Hhhhhheart]

Any idea how to correct it 

mine is doing the same thing 

[Lizardo1]

It isn’t the thermostat or it’s software. One of the motorised valves was faulty and not closing once the target heat reached. Manually closed and all ok. Replacement unit fitted and all ok.

[Lizardo1]

See my solution further down 

[EdwardT]

Hi folks,

I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.

Thanks,

Edward

[Markjosephp]

Hello there,

I'm checking in to make sure that you've seen our response. Please let us know if you have any additional questions or concerns before we lock this thread in 24 hours.

Regards,

Mark

[Lizardo1]

Thanks for checking but as I posted earlier the problem of constant heat being call for was a stuck zonal valve actuator. Once replaced everything works perfectly. The replacement actuator was simple to unclip from the valve, reconnect the wires and problems solved.

[Markjosephp]

Hello there,

@akorl, Thank you for taking the time to respond to this thread. I've followed up with the team that's handling your case, and they'll get back to you as quickly as possible.

@Lizardo1, I'm glad to know the issue has been fixed, and I appreciate you letting us know about what happened.

Please let us know if you have any additional questions or concerns, as we will lock this thread in 24 hours.

Regards,

Mark

[akorl]

After a couple days with the new plastic nest thermostat google nest disjointed hot mess  integration between it and my nest protect I decided it was time to leave Nest and go eco bee. It’s too bad that Google messed up on Nest and should have let Nest do its thing with the deep pockets of Google. This plastic crap they produced I can’t recommend to anyone needing to replace a broke gen 3 learning or buy new. 

[Markjosephp]

Hello folks,

I'm sorry for the trouble this may have caused. I'm chiming in to see how I can help.

@Lizardo1, I appreciate you updating here in this thread on what you've done to have your concern rectified. 

@Cb69 and @Hhhhhheart, a few questions to narrow it down: is there a C wire connected? Also, could you provide a rundown of all the steps you've tried?

@akorl, Thank you for all the steps you have taken. Since it has been isolated, we'd like to look more into this. Please fill out this form with the needed information and let us know once you're done.

Regards,

Mark

[akorl]

Mark form submitted.  Let me know if there is anything else you need.

Thanks for the reply

[Markjosephp]

Hello akorl,

Thanks for completing the form; we have received it. Soon, a member of our upper team will contact you via email, so please continue the conversation there for any updates.

Regards,

Mark

[Markjosephp]

Hi there,

@Cb69 and @Hhhhhheart, I wanted to see if you still needed help. Please let us know if you have any other questions or concerns.

Thanks,

Mark

[akorl]

Hello I submitted the ticket and submitted the additional information that was asked for  and still waiting on a response or acknowledgment since submitting the additional information along with the repair invoice findings. Can you provide a timeframe for when I should expect a response to the information submitted.

thanks