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Fan does not run in Auto or Manual Mode

RayDee
Community Member

I restarted it and the fan icon in Display rotates but the fan does not run and no airflow in any vents that I can detect. Software up to date. Restart (both thru Settings & manually) doesn't help. Troubleshooting doesn't show any problem either. 

10 REPLIES 10

CoolingWizard
Silver Product Expert
Silver Product Expert

Please post the picture you took of the old thermostat base plate before you removed it.  And, please post the picture of the nest backplate after you installed it and attached the wires.  

Ken, The AC Cooling Wizard

NestPro and HVAC company owner

RayDee
Community Member

Ken, Thank you! The Thermostat was installed by a professional 3 years ago and has been working well since then except for the current problem. I had received an alert from Google Monitoring in early September and their contractor checked our system and detect any problem. I changed the filter then. So, I assume the wiring is not a problem. I did Troubleshooting thru the Nest Settings and it did not find any issues either! Thank you for your suggestion though. 

CoolingWizard
Silver Product Expert
Silver Product Expert

Try this, turn the system mode to OFF. Then, select the FAN and start it for 1 hour.  Does the blower start?

The AC Cooling Wizard

NestPro and HVAC company owner

RayDee
Community Member

Ken, Thanks again. I didn't see any System setting on the Nest Settings nor the Nest App Settings menus. The Model display is 3.6 & Backplate Display is 5.4. Ray

CoolingWizard
Silver Product Expert
Silver Product Expert

RayDee,

I re-read your posts. This looks like you have a problem with your blower itself.  Do you have access to the air handler of your HVAC system?

Ken, The AC Cooling Wizard

NestPro and HVAC company owner

RayDee
Community Member

Ken, I think you are right! It is either the Condenser or the fan itself. Will check it. Thank you!! Ray

CoolingWizard
Silver Product Expert
Silver Product Expert

RayDee, do you have access to the indoor HVAC cabinet?

NestPro and HVAC company owner

aatienza
Community Specialist
Community Specialist

Hey folks,

 

RayDee, I'd like to jump in here and check if you've seen CoolingWizard's response. Let us know if you need more help by replying to this thread.
 

I appreciate the help, CoolingWizard.

 

Thanks,

Archie

aatienza
Community Specialist
Community Specialist

Hey there,

 

I just wanted to follow up to see if you still need our help. Please let us know as we would be happy to answer any questions you may have. 
 

Thanks,

Archie

aatienza
Community Specialist
Community Specialist

Hello there,

 

Just checking in to make sure that you've seen our responses. Please let me know if you have other questions or concerns as I will be locking this in 24 hours if I won't hear back from you again. Feel free to start a new thread and we'll be happy to help.
 

Thanks,
Archie