I was called out to Alexa’s house to replace the circuit board on the upstairs system. Once I replaced the board I attempted to run the ac but the blower would turn off after a couple of minutes. During my thorough evaluation I discovered that the backplate for the thermostat has shorted internally causing the board to fail in the process. Alexa Is speaking with google to get the thermostat replaced so the system is still not working at this time until the thermostat is replaced. Alexa mentioned that she wanted to get some previous estimates done which since I had the parts on hand I performed immediately.