No Heat Mode

[Drae12]

I just installed the Nest Learning (3rd Generation) in my condo according to the install instructions. My previous thermostat only had a Y and R connection. (The Nest install instructions directed me to install Y1 and RH to align). Condo has low voltage Boiler heating system with radiation baseboard cabinet and Nest appears to be controlling the temperature but only has cooling mode. The lowest level on the Eco setting is 24'C which is too hot for a Canadian winter. (My bill would be huge). I should also mention that I have no A/C. How do I get to heating mode when its not an option?

[johnCNA]

On the Nest and almost all other combo thermostats, Y controls cooling.  W controls heat.  Try moving the wire in the Nest base plate from Y1 to W1, replace the Nest in it's base and then go into the Equipment menu on the Nest to see that it configured your system for Heat and no Cooling.

[Ryan_G]

Hey folks,

Thanks for being here.

@johnCNA, thanks for helping.

@Drae12, were you able to try the suggested steps above? If you still need help, please get back to us by replying to this thread.

Best regards,

Ryan

[Drae12]

I switched the Y1 wire to W1 and have heat mode but now the heat seems to turn on much more frequently. I will give it a few more days and if it doesn’t seem to be “learning” I’ll have to return it as I’m not entirely convinced it’s compatible with my condo heating. (Boiler with low-voltage radian baseboards.)

[Ryan_G]

Hi Drae12,

Thanks for the update.

We'd love to hear from you again on what's happening.

Best regards,

Ryan

[Drae12]

I had to switch the wire back to Y as it would just let heat continue to run even well past the temperature. Oh Google help I made note that some boiler 2 wire systems have Y1 controlling both heat and cool. This is clearly the case with mine since even though it only stays in cool mode it is correctly maintaining the temps that I set. I have decided to leave it as is and will just manage using cool mode only with the eco temp turned off 

[Ryan_G]

Hey Drae12,

Thanks for your reply and for the updates.

It's great to hear that it seems to be up and running for you again.

If you have any other questions, let us know by replying to this thread.

Best regards,

Ryan

[Ryan_G]

Hey folks,

Thanks for visiting the Google Nest Community. 

Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.

If you have additional questions, feel free to submit another post and provide as many details as possible so that others can lend a hand. 

Hope this helps!

Kind regards,

Ryan