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Nest Thermostat (not Nest Learning not Nest E ) can stop heating

SharonL778
Community Member

‎09-30-2023 02:28 PM

My house uses a gas furnace for heating and an air conditioner for cooling. It used to have an old Honeywell thermostat (wired G/Y/OB/R). After I replaced it with Nest Thermostat, the cooling (AC) worked fine. Summer is gone and now I notice that the heating is not working. Yesterday the furnace and AC both turned on for heating to 70F. Hot hair blew thru the vent and the house kept heating up over 70F. I tried to turn off via the nest thermostat and it didnt help. Eventually I had to shut off the power of AC and gas furnace. Attached is the current wiring configuration. It has been working for Cooling. Please advise a fix. Thank You!

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2 REPLIES 2

SharonL778
Community Member

‎09-30-2023 02:32 PM

66F02F46-BABF-4762-8E47-AFD6A0C04691.jpeg

 

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EmersonB
Community Specialist
Community Specialist
In response to SharonL778

‎10-05-2023 03:29 PM

Hi SharonL778,

 

Thanks for reaching out here in the Community. To know more about this issue, I’d like to confirm, where are you located? Please take a photo of your wiring setup and share it here. Also, please share the power reading of your Nest Thermostat. Go to Settings> Equipment> Power Info. Let us know your update here.

 

Best,

Emerson

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