topic Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t in Nest Thermostats

"My AC and Heater never turn off, even if they reach the set temperature or if I set them to off."

BCreek — Fri, 14 Apr 2023 22:26:42 GMT

My AC and Heater (Heat pump) never turn off, even if they reach the set temperature or if I set them to off. They keep blowing air, whether it is heat or AC. The only way to turn off the AC is to cut the power from the circuit breaker. The wiring could be a potential issue, but I'm not sure. I remember it stopped after some time in the past, but now it just keeps blowing air.

Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t

Patrick_Caezza — Wed, 19 Apr 2023 05:24:24 GMT

@BCreek

Post a picture of the original thermostat wiring

Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t

zoeuvre — Tue, 25 Apr 2023 15:23:04 GMT

Hi BCreek,

I wanted to check and see if you managed to see the information that Patrick_Caezza has shared. Please let me know if you have any questions from here. I would be happy to assist and make sure you are good to go.

Thanks for your help, @Patrick_Caezza.

Best,

Zoe

Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t

BCreek — Wed, 26 Apr 2023 01:48:02 GMT

Here is the original wiring. I might have missed something. Thank you very much @Patrick_Caezza

Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t

BCreek — Wed, 26 Apr 2023 01:48:44 GMT

I found the old picture and attached. Thank you for asking.

Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t

Markjosephp — Thu, 27 Apr 2023 22:11:09 GMT

Hello BCreek,

I wanted to stop by and see how I could help.

Thanks for sharing your old thermostat wiring setup. I'd be happy to take a look at this for you.

To isolate:

What other strange symptoms have you experienced since the problem started?
Are there any error messages? If so, what are they exactly?
When was the last maintenance check for your HVAC system?
Have there been any recent changes or upgrades to your HVAC system?
Have you experienced any power outages within the last few days or weeks?
Please check your thermostat's power readings in the Technical Info settings.

I'll look forward to your response.

Regards,
Mark

Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t

Jake — Tue, 02 May 2023 19:59:40 GMT

Hey BCreek,

I wanted to check in and see if you managed to see Mark's post. Please let me know if you have any questions from here. I would be happy to assist, and make sure you are good to go.

Best regards,
Jake

Re: "My AC and Heater never turn off, even if they reach the set temperature or if I set them t

Jake — Thu, 04 May 2023 17:56:08 GMT

Hey there,

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

Best regards,

Jake