Heating Issues

[lkjhg]

 

 

Hey gang,

I’m using a 1st generation Google Nest Thermostat. Above are pictures of

(1) the original thermostat wiring - did not use jumpers as per Google. 1st gen only has 6 terminations: W C Y G R OB*

(3) Current configuration of downstairs - not configured for heat pump. Only way I can get heat in this zone. 

(2) screenshot of the technical manual thermostat wiring - the air handler model I have TEM4A0B24S21SAA but the only TM I could find was for TEM4A0B24S21SB, not sure if there’s too much of a difference. 

(3) the side of the air handler - looks like the thermostats are daisy chained?

Soon as one zone (upstairs and downstairs respectively) starts working; I don’t get heat in the other zone. The outside unit for the heat pump would only would kick on for upstairs zone. 

That was a lot,

Hope y’all can help,

-Jerad

[Houptee]

Do you have 2 Nests?

The wiring looks like a basic heat pump.

Not sure how the 2nd tstat is wired into the system.

How does it change zones is there a zone damper in the ductwork that changes the air flow?

The wiring info is usually on a decal on the back of the door of the air handler and also outside another decal if you take off the cover where wires enter the unit.

[Houptee]

Here is some info about zoned systems

https://support.google.com/googlenest/answer/9250906?hl=en#zippy=

[aatienza]

Hey there,

lkjhg, checking in — we hope you've got the answer you're looking for. Let us know if you have more questions in mind.
 

I appreciate the help, Houptee.

Thanks,

Archie

[aatienza]

Hey folks,

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. 
 

Thanks,

Archie

[aatienza]

Hello there,

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