

Thermostat change from Danfoss to Meross
Hello, I was gifted a smart thermostat to upgrade the existing one in picture 1. I called an electrician to install the new one, he wired it like in picture 2 left and said he’ll be back another day. It’s not turning on and from my understanding the issue is that it’s missing a live wire. Is it correct and is it something easy to do?
Original Thermostat is a Danfoss 5000 and new one is Meross Meross MTS215B