Set to gas or electric?

[bk88]

Hi All,

I've got a zoned home, with AC and heat.  It is controlled by 1 fancy Nest thermostat (displays outdoor temp) and 2 budget Nest thermostats.

It has always run fine.  But I just noticed that the Equipment settings are different. Although the house has a gas boiler and forced air, the settings on one of the cheap thermostats is correct (Gas & Forced Air) while on the other two, it is set to Electric & Forced Air.

I thought Nest Renew might care whether they were accurate or not, so I set the two wrong ones to Gas & Forced Air too.  

But then I never heard the blowers come on, so I switched them all back to what they had been.

SHOULD I WORRY ABOUT THEM BEING SET ACCURATELY? OR LEAVE WELL ENOUGH ALONE?

Thanks

[Jhonleanmel]

Hi bk88,

Thanks for reaching out. I'd love to know more about this. Could you share a photo of your current thermostat's wiring (ones set to electric and forced air) and HVAC's system control board? What is your HVAC's make and model? 

Thanks,
Mel

[bk88]

Thanks Mel.  Here are photos/info for the air handler that I can reach without a ladder.  Let's start with that one.  What do you think?  Do you need me to trace a wire?? sorry about the photo

2nd floor wiringCarrier model FB4BNF024Wiring, as it enters the air handler - one cable labeled 'thermostat'sideview of wiring box - focus on textsideview of wiring box - pulled back

[bk88]

Mel, Any response?

(see the photos you requested, sent previously.) 

Thanks,

Bill

[bk88]

Mel,

Hopeless?  Any thoughts?