E296 error during cold snaps

[bhimabi]

During the recent cold snap, the perfectly working thermostat went crazy. 

It started saying that a brand new batter is low among other things. But the main one was the E296 error ( No power to Y1 wire detected (cold weather shutoff)). This cause my furnace to try to start up but kept failing for a long time.

How do I prevent this from happening again? 

[David_K]

Your air conditioner may come equipped with a safety device that will stop it from turning on in extremely cold weather to prevent damage. These safety devices, sometimes called low pressure switches or safety cut-out switches, can sometimes prevent your air conditioner from providing your Nest thermostat with power in extremely low temperature conditions. This is most likely what you experienced. To prevent this from happening again, you can install a common wire or power accessory like the Nest Power Connector.

[Jeff]

Thanks for the help, davidking!

Hi bhimabi,

I just wanted to jump in real fast to see if you saw davidking's reply and to see if you still needed some help on this or if you were able to get it sorted out. If you are still needing some help, just let us know and we'll be happy to continue helping.

Thanks,
Jeff

[Jeff]

Hey bhimabi,

I just wanted to follow up once more to see if you were still needing some help here. If so, just let us know.

Thanks,
Jeff

[Jeff]

Hi everyone,

Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.

Thanks,
Jeff