Greetings All, I was looking for some help with my 3rd Gen Nest and the issue stated above. I have had a Nest since January of 2017. Last year it heated fine but had similar issues when trying to cool. Hooked back up the old thermostat and it would cool the house fine, so I knew it wasn't my system. Contacted Nest, they stated it was the back plate and sent a new one. Didn't work. Contacted them again and they sent a new head unit that worked great. Continued working throughout the Summer/Fall/Winter, but now having issues when trying to cool the house again. The first couple times I tried the A/C it felt like cool air for the first few minutes, then would turn warm. I haven't tried the old t-stat yet, but think I may have to in order to verify it's not my system. I have a heat pump with aux electric heat. All forced air. Wire config is Yellow - Y1, Green - G, Brown - O/B, Red - Rc, White - W2/Aux, and Blue - C. Any help is much appreciated.

I need help hooking up a new Nest 3rd Generation to a Goodman ARUF182416CA. It currently has 8 wires coming out of the wall, and the black is unused. The current thermostat in the wall is a Honeywell TH3210D1004. I followed the wiring that Nest gave me, and it was blowing out hot air. I called the HVAC technician that did my inspection (just bought the home 3 days ago) and he suggested I change the orientation of the heat pump from O to B. I did that, but it's still blowing hot air. I have attached the pictures that I took and also the diagram Nest told me to use.