No one at Danfoss got alerts than sudently hundred of fridges entered defrost mode? Reminds me of those computer you see at stores running weird ms-dos software.

“With our new internet-connected refrigerator line, you can get notifications online if a bunch of equipment malfunctions.”

“Why would a bunch of equipment malfunction?”

“Because you plugged it into the internet, you dolt.”

Many of these things have cycles where they clear frost or otherwise remove moisture from the system by getting hot. What you're talking about is something that could be common. It's the extended heating that starts causing problems, but if the software is taken over the alerts may no be sending.