Hello, I hope everyone is enjoying the holidays!

I have an American Standard Gold Series 1 stage heat pump and a TAM7 variable speed air handler. I got a Sensi thermostat for Christmas and installed it today. The thermostat appeared to be working correctly, however, the heat would never come on. I watched this video (TAM7 Airflow Control Board LEDs) and determined that I had a blown fuse near the blower. I checked and sure enough it was blown (although it was not the same style fuse, mine is a 5 amp blade fuse found in cars). I replaced it and double checked the wiring configuration based on the thermostat instructions. Tried again and the fuse blew out again. I am thinking maybe I have the wiring incorrect? Please see the picture below. I have a pic of the old thermostat wiring but it's hard to see the letters so I'll type it out:

Y2 - Black
W2 - White
G - Green
W - Orange
B - Blue
Y - Yellow
R - Red




Thank you!!

 

Move the blue wire to the C terminal.

American Standard and Trane's B is every other brand's C.

I am surprised that you do not have a jumper between Rc and Rh.

 

Thanks, I need t buy more fuses then I'll give it a try.

p.s. the jumper is built in on the back of the face plate.

 

I wonder if posting the mac ID would allow a malicious person to hack your thermostat.

We should probably remove that picture but I see that it has a few toggles.

 

That worked thanks!! Better to ask than to try yourself and potentially cause more problems. I appreciate the advice!