replacing a basic Honeywell Thermostat with a Nest E

[ErikL]

I have a basic Honeywell heat pump system with emergency electric heat. It is wired Red/R, White/Aux, Yellow/Y, Green/G, Orange/O, Lightblue/B. The last two I understand are for switching between cooling/heating modes. There is no C as on the Nest.

This is a fairly old Frigidare system with nothing special about it. Can anyone advise how the wiring should be. What is the C for?

Thanks

[Patrick_Caezza]

Post a picture of the wiring on the original thermostat.

[ErikL]

Sorry, this system doesn't seem to allow a link to my photos, but there is nothing it can add to what I described.

[EdwardT]

Hi folks,

@Patrick_Caezza, thanks for the help!

@ErikL, thanks for reaching out. Could you tell us the make and model of the current thermostat that you're using?

Looking forward to your response.

Thanks,

Edward

[EdwardT]

Hi ErikL,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[EdwardT]

Hi ErikL,

Just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,

Edward