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Air handler kicks on when heat is on

Kyle1789
Community Member

I have a 6 wire system that worked perfectly fine with my Honeywell system. I also have another nest learning thermostat that works perfectly fine with a separate 6 wire system. 

For some reason, one thermostat will always kick on the air handler when the heat activates and turns on. My wiring is RC, RH, C, W, G, Y. I have a dual transformer system with a compressor and air handler as well as a has powered boiler which works with my forces hot air baseboards. 

 

I can't figure out how to post pictures of my current wiring from my phone, but everything in both of my nest thermostats is wired the same, except one works perfectly fine and the other constantly triggers on the air handler. Any help would be greatly appreciated before I end up returning both and going back to my Honeywell.

 

Thanks,

Kyle 

 

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