I had the same problem. I called an experienced HVAC man (30yrs) to do a maintenance check on my air conditioner. Make sure they’re experienced. I had one that wasn’t and he feed me a line of bull.
This technician took all the sides off the A/C unit. The coils had a thick wall of dirt and grime on them. First he sprayed all of it off with the hose & an extension for pressure. Then he used a chemical cleaner on it. In the basement, I have a drop ceiling, so he could look at the duct work. He showed my how to adjust the dampers and play with them until the air was right on the main level, 2nd story & basement. Then he laid a instrument on the top of the thermostat. My thermostat is in a “dead zone” so it reads wrong. It’s off by 9 degrees! I would have to move it to the other side of the wall for an accurate reading. For now I set it at 62 so it’s about 71 in my house. Still playing with the dampers. Once you get them right, mark them. You may have to change them in the winter too, so you should mark them for each season. My thermostat still reads 2 hours, but the temperature does adjust now.
Now my thermostat problem is I can only change the temp manually. Otherwise it no longer pushes in, so I can’t get to settings (Wifi) or the schedule. The app didn’t work on my phone so I deleted it thinking a re-install would help. I can’t reinstall it though. I called Google, but they always take you through the same process with do you have cool air blowing out, checking the wires, switch the air/heat wires (last time that made it over 80 & it was reading off 9 degrees), take a picture of the wires & email it to me, and so on. I told the tech I knew how to do all of that and it was all good. What’s next? He refused to help me further unless I did everything he asked. I asked to speak to a manager and he told me he couldn’t transfer me. I asked him to have a manager call me. Nope. Couldn’t do that either. Fine, I’ll call back and ask for one. What’s my case number? He said he couldn’t give me that information. What!!!! Go back to India because all you do is read a script, I can’t understand most of what you’re saying and you’ve wasted 45 minutes of my life!!! I still can’t do anything with my thermostat. I bought Google Mesh w/ 1 pod & have nothing but problems with that too. Wasted 3+ hours with its “easy” 10 min setup initially. Then it went off line and it took from 10pm-3:30am to fix it. I had to work at 6am! My internet service had me call Google. Google told me to call my internet service back and tell them xyz. I told them I didn’t wash to play the back & forth game. I just wanted to reinstall so my internet worked. Google couldn’t do anything. The problem was my modem. My internet service told me they didn’t do xyz , the problem was the router & to call Google back. Finally I got them to agree to a 3 way call. That was interesting. I had enough of their insisting it was the others fault. I BEGGED Google to just help me reinstall the Wifi. Again, the 10min process was over 1.5 hours. Guess what I think of Google and their “customer service”.
Wishing you the best.
