Heater works but blower motor is pulsating when air conditioner is running.

[Goejaves]

Heater works just fine. However when I turn on the ac, the blower motor on the heat keeps pulsating. I switch to a cheap thermostat and it works just fine. Any help would be appreciated. 

[Ryan_G]

Hi Goejaves,

Thanks for reaching out and we're sorry for the delay.

There are factors that we'll need to check for us to further isolate the issue. First, we'll check the wiring on your Google Nest thermostat. It is important that all of them are seated properly in the terminal. We can check if they are correctly connected by getting a photo of your current wiring configuration. Next, we could check your equipment settings. Go to settings > equipment > select the right heat type and heat source.

We'll be waiting for your reply on this thread.

Best regards,

Ryan

[Ryan_G]

Hey folks,

Thanks for visiting the Google Nest Community. 

Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.

If you have additional questions, feel free to submit another post and provide as many details as possible so that others can lend a hand. 

Hope this helps!

Kind regards,

Ryan