I am a new Ring customer. I attempted to install my new Ring Doorbell Pro and as soon as I turned the breaker back on at the box the door chime installed in the foyer started making a very audible buzzing sound that wouldn’t stop. The Ring Pro also didn’t power on. If I had waited 30 minutes, maybe it would have but I was concerned by the buzzing so I disconnected everything in the chime box.
I checked the doorbell model, and it is an Edwards C210-W which is on the mechanical doorbell compatibility list for Ring Pro. The transformer is a 16V 10VA which meets the Ring Pro doorbell power requirements.
Thank you in advance for your assistance.