Nest Learning Thermostat Compatability

[Lighthousetom]

Hi there

I have just gone through the online compatability checker and was unsure what wires to select on the checker

I  have  attached an image of the wiring for my current thermostat

I have got (from what i can see..):

N

L

Some kind of symbol?

COM

N/O

These were not options in the compatability checker and I am an amatuer with things like this.. just dont want to purchase if i wouldnt be able to set up in the future

Thanks for any help in advance

Tom

[MelbaDT]

Hey Lighthousetom, 

Thanks for reaching out and for the photo. 

Since your thermostat has uncommon terminal labels, it is best to reach out to a professional. Please contact an HVAC technician or a local pro for assistance.

Best, 

Melba

[MelbaDT]

Hey there, 

How's it going? Still need our help here?

Best, 

Melba

[MelbaDT]

Hi, 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the Community.
 

Best, 

Melba