Recurring E355 and R355 on Vista 20P

[tc1515]

I just installed an EnvisaLink 4-Max to my Vista 20P. I activated the EVL4, successfully accessed the web interface by IP address and was able to download the latest firmware for Honeywell. I was also able to connect to the board from Home Assistant, my home automation server. It all looked promising until I started getting recurring E355 and R355 alerts about every minute from my panel. The red fault light on my Resideo LTE communicator is on. When I disconnect power to the EVL4, then the E355 and R355 would cease and the system goes back to normal. Is there some setup that I have missed that is causing the errors?

[GrandWizard]

Did you enable shadowing? It sounds like you have a LRR/IP/GSM conflict. When you have two communicators the Envisalink needs to be put into "shadow" mode.

Submit a tech support request from your Eyezon portal so we can see your setup.