Breaker Trips/Burning Smell after installing Nest 3rd Gen - HELP!!

[jtharness]

Good morning, all - I'm in limbo land - I recently moved over to a 3rd Gen Nest Thermostat from a Honeywell unit.  All "seemed" to be going well until the breaker began tripping intermittently, and now I have REAL concerns b/c I'm smelling a burning odor and the breaker panel is HOT!  Hoping someone from this community can help me quickly resolve my issue.  Thank you in advance.

Context:

Trane Furnace

Air-to-air heat pump

1 stage cool/2 stage heat (heat pump & electric)

3rd gen Nest Thermostat

[jtharness]

I'm not seeing a way to upload reference photos of the wiring layout - before and after - can someone jump in to assist?  Thanks community!

[MplsCustomer · Accepted solution]

@jtharness 

If you are logged into this forum (by clicking on the blue profile icon in the upper right corner of the screen) BEFORE you click on "Reply", you get a camera icon; clicking on that will let you upload a photo.

[jtharness]

Thanks for the assist!!  Photos uploaded to assist with diagnosis and any recommended fixes. 

[jtharness]

 

 

[jtharness]

I’ve programmed * for emergency heating.  Was x2 in prior wiring arrangement on Honeywell unit.  

The breaker keeps tripping and I’m hoping that this community can help me understand what I may or maybe not be doing properly with the Nest wiring.  Thanks again! 

[jtharness]

Honeywell wiring configuration:

Y2 - Brown wire

X2 - Black

W1 - White

RC/R - Red with jumper 

O - Orange 

Y - Yellow 

G - Green

B - Blue