Static noise always on my Ring Doorbell Pro

My husband installed our Ring Doorbell Pro this weekend and it works great. Great signal, old doorbell rings right after the new as Ring Doorbell chime, sends messages to my phone immediately. The problem is there is ALWAYS noise coming from my original doorbell box. It is very loud and sounds like the wind blowing really hard. It is driving my son crazy as the box is right outside his bedroom door and he has heard it all night for 2 nights. The doorbell is hardwired in place of our old doorbell. I have the iPhone 8 Plus. The problem isn’t with the phone connection though, it’s with the original doorbell chime.