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Nest 3rd gen furnace heat won’t come on

Kennystewart80
Community Member

Hey, My furnace comes on but won’t ignite a flame, so just blows cold air. Hooked up my old thermostat again and it worked just fine. Any thoughts from anyone ?

4 REPLIES 4

CoolingWizard
Silver Product Expert
Silver Product Expert

You Nest might not configured properly for your heating system. Your heating is initialized by the thermostat connecting R to W.  Your seems to be connecting to R to G and not including W.  Please check your nest equipment configuration. Heating FUEL TYPE should be GAS, and HEATING TYPE should be FORCED AIR.  Make shire the wire in W is properly installed.  

Ken

NestPro and HVAC company owner

Markjosephp
Community Specialist
Community Specialist

Hi there,

 

@CoolingWizard, thanks for assisting.

 

@Kennystewart80, I'm sorry to hear about the issue you're having with your Nest Thermostat that won't activate the heat. A few things to isolate:

 

  • What type of HVAC system do you have?
  • When did heating last work?
  • Does the thermostat screen indicate that it’s actively calling for heating?

 

Looking forward to your response.

 

Regards,

Mark

Markjosephp
Community Specialist
Community Specialist

Hello Kennystewart80,


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,

Mark

Jake
Community Specialist
Community Specialist

Hey Kennystewart80,


I wanted to check in, and let you know that I will be locking the thread in 24 hours.

 

Best regards,

Jake