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Nest is not kicking heat on

TheColemans
Community Member

My new Nest was working fine when installed a few weeks ago and now it’s just not kicking the heat on at all! Help! 

11 REPLIES 11

Houptee
Silver Product Expert
Silver Product Expert

Can you post a pic of the wires connected to the base.

What kind of heating system do you have?

Gas with forced air or a boiler with hot water radiators etc.


Houptee -- NJ Master HVAC Licensed Contractor

I have same issues with electric forced air. All I have is cold air blowing with heater on and this just randomly happened mid winter freeze

Houptee
Silver Product Expert
Silver Product Expert

Could be your furnace and not the Nest.

What wires are connected on your Nest base?

Do you know how to use a multimeter to test for AC voltage? You can buy one for around $20 at home depot or lowes or harbor freight tools etc.

You could use the meter to test at the furnace if you have 24v AC arriving on the White wire when Nest is calling for Heat. You would put the Test probe red on the W screw and the test probe black on the C common screw on the furnace and you should have 24-30V AC (only when Nest is calling for heater to turn on).

If you have the power on W then there is a problem with your furnace. Possibly there is a relay that turns on the heat coils, or the coils maybe burned out.

You could test the coils with the meter also by using the Ohms setting to measure resistance of the coils. You can look up on youtube how to test heater coils probably lots of videos out there.


Houptee -- NJ Master HVAC Licensed Contractor

Jhonleanmel
Community Specialist
Community Specialist

Hey folks, 

We appreciate your help here, Houptee.
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 concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks,
Mel

called out a HVAC guy - wasps were building a nest on my heater coils. Problem was fixed - there was no way anyone could have known! lol. Thank you all. 

Jhonleanmel
Community Specialist
Community Specialist

Hey there Stevenn80, 

Awesome — glad to hear that your issue is fixed. It looks like we can consider this one complete, so I will lock the thread shortly unless I can help out with anything else. 

Best, 
Mel

AlishaF
Community Member

we are having freezing temps here in GA this weekend, the aux heat has not turned off all week.  Despite my temp being set at 74, it’s currently 63 in my home. Please help!!!! 

Houptee
Silver Product Expert
Silver Product Expert

Do you know if the heat pump is running at all? Does the outdoor unit come on and run?

There could be a problem with the heat pump not the Nest.

How old is your system? Older heat pumps cannot produce heat using the outdoor unit below a certain temperature and switch over to the backup Auxiliary electric heat coils.


Houptee -- NJ Master HVAC Licensed Contractor

Markjosephp
Community Specialist
Community Specialist

Hello there,

 

Thanks for chiming in again, @Houptee.

 


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

 

Regards,

Mark

Hello AlishaF,


Checking back in — how's it going? Still need our help? Please us know so we can assist you right away.

Thanks,

Mark

Hi AlishaF,

 

It has been a few days since your last reply, and I am going to lock the thread within 24 hours. If you have any questions, please feel free to create a new post.

 

Thanks,

Mark