Nest Thermostat E error

[wmnRtist]

I have had my Nest Therm E hooked up for 3 years. It has worked flawlessly. Today, getting my heater ready for winter, I received an E182 error. I have checked the W1 wire and it is connected fine. Nothing has changed since the install of the Nest Therm so I am wondering what the issue is. 

[Patrick_Caezza]

Do you have a C wire connected to the thermostat?

I know that Nest states a C wire isn't required, but in the real world, a C wire is required more than not.

The E182 error means there is an over-current condition detected by the Nest. No C wire can sometimes cause this error, and other times a relay in your furnace could be starting to fail. You never see this type of problem with the old-style thermostats as they don't monitor the voltage and current draw on each terminal like the smart thermostats do.

[wmnRtist]

I dont have a C wire. When it was installed all that was available is red and W1. It worked fine for 2 seasons. Now it doesn't. The transformer is buzzing and clicking too. 

It sounds like you are saying an non-smart thermostat would be my only option? The furnace is old.

[Patrick_Caezza]

All two-wire systems will kill the battery in a Nest thermostat after a few years. The power stealing that Nest uses to keep the batteries charged just doesn't work correctly with only two wire.

The easiest way to add a C wire is to use the Google Nest Power Connector and an external 24Vac transformer. Installing these and wiring them in is not very hard.

 

 

[wmnRtist]

Thank you. Do you happen to know if there is a youtube specific to the install? If not I will search. I am a visual learner and it would make more sense along with looking at the instructions. 

[Markjosephp]

Hi folks,

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

@Patrick_Caezza, thanks for sharing how C wire or Nest Power Connector works.

@wmnRtist, I'm sorry if you have to go through this. We'd like you to have a better experience using your Nest thermostat. Here are some references to help you install your Nest Power Connector on your HVAC system.

• Nest Power Connector installation article
• How to install the Nest Power Connector - video link

Please let me know if that helps, or if the issue still persists.

Thanks,

Mark

[aatienza]

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. 
 

I appreciate the help, Mark.

Thanks,

Archie

[aatienza]

Hey folks,

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